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2714 lines
106 KiB
2714 lines
106 KiB
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This file was originally from https://golang.org/cl/24717 by Vlad Krasnov of CloudFlare.
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// +build go1.7,amd64,!gccgo,!appengine
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#include "textflag.h"
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// General register allocation
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#define oup DI
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#define inp SI
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#define inl BX
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#define adp CX // free to reuse, after we hash the additional data
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#define keyp R8 // free to reuse, when we copy the key to stack
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#define itr2 R9 // general iterator
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#define itr1 CX // general iterator
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#define acc0 R10
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#define acc1 R11
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#define acc2 R12
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#define t0 R13
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#define t1 R14
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#define t2 R15
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#define t3 R8
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// Register and stack allocation for the SSE code
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#define rStore (0*16)(BP)
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#define sStore (1*16)(BP)
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#define state1Store (2*16)(BP)
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#define state2Store (3*16)(BP)
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#define tmpStore (4*16)(BP)
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#define ctr0Store (5*16)(BP)
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#define ctr1Store (6*16)(BP)
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#define ctr2Store (7*16)(BP)
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#define ctr3Store (8*16)(BP)
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#define A0 X0
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#define A1 X1
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#define A2 X2
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#define B0 X3
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#define B1 X4
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#define B2 X5
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#define C0 X6
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#define C1 X7
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#define C2 X8
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#define D0 X9
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#define D1 X10
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#define D2 X11
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#define T0 X12
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#define T1 X13
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#define T2 X14
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#define T3 X15
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#define A3 T0
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#define B3 T1
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#define C3 T2
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#define D3 T3
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// Register and stack allocation for the AVX2 code
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#define rsStoreAVX2 (0*32)(BP)
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#define state1StoreAVX2 (1*32)(BP)
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#define state2StoreAVX2 (2*32)(BP)
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#define ctr0StoreAVX2 (3*32)(BP)
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#define ctr1StoreAVX2 (4*32)(BP)
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#define ctr2StoreAVX2 (5*32)(BP)
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#define ctr3StoreAVX2 (6*32)(BP)
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#define tmpStoreAVX2 (7*32)(BP) // 256 bytes on stack
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#define AA0 Y0
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#define AA1 Y5
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#define AA2 Y6
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#define AA3 Y7
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#define BB0 Y14
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#define BB1 Y9
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#define BB2 Y10
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#define BB3 Y11
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#define CC0 Y12
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#define CC1 Y13
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#define CC2 Y8
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#define CC3 Y15
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#define DD0 Y4
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#define DD1 Y1
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#define DD2 Y2
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#define DD3 Y3
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#define TT0 DD3
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#define TT1 AA3
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#define TT2 BB3
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#define TT3 CC3
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// ChaCha20 constants
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DATA ·chacha20Constants<>+0x00(SB)/4, $0x61707865
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DATA ·chacha20Constants<>+0x04(SB)/4, $0x3320646e
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DATA ·chacha20Constants<>+0x08(SB)/4, $0x79622d32
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DATA ·chacha20Constants<>+0x0c(SB)/4, $0x6b206574
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DATA ·chacha20Constants<>+0x10(SB)/4, $0x61707865
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DATA ·chacha20Constants<>+0x14(SB)/4, $0x3320646e
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DATA ·chacha20Constants<>+0x18(SB)/4, $0x79622d32
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DATA ·chacha20Constants<>+0x1c(SB)/4, $0x6b206574
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// <<< 16 with PSHUFB
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DATA ·rol16<>+0x00(SB)/8, $0x0504070601000302
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DATA ·rol16<>+0x08(SB)/8, $0x0D0C0F0E09080B0A
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DATA ·rol16<>+0x10(SB)/8, $0x0504070601000302
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DATA ·rol16<>+0x18(SB)/8, $0x0D0C0F0E09080B0A
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// <<< 8 with PSHUFB
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DATA ·rol8<>+0x00(SB)/8, $0x0605040702010003
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DATA ·rol8<>+0x08(SB)/8, $0x0E0D0C0F0A09080B
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DATA ·rol8<>+0x10(SB)/8, $0x0605040702010003
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DATA ·rol8<>+0x18(SB)/8, $0x0E0D0C0F0A09080B
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DATA ·avx2InitMask<>+0x00(SB)/8, $0x0
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DATA ·avx2InitMask<>+0x08(SB)/8, $0x0
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DATA ·avx2InitMask<>+0x10(SB)/8, $0x1
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DATA ·avx2InitMask<>+0x18(SB)/8, $0x0
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DATA ·avx2IncMask<>+0x00(SB)/8, $0x2
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DATA ·avx2IncMask<>+0x08(SB)/8, $0x0
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DATA ·avx2IncMask<>+0x10(SB)/8, $0x2
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DATA ·avx2IncMask<>+0x18(SB)/8, $0x0
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// Poly1305 key clamp
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DATA ·polyClampMask<>+0x00(SB)/8, $0x0FFFFFFC0FFFFFFF
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DATA ·polyClampMask<>+0x08(SB)/8, $0x0FFFFFFC0FFFFFFC
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DATA ·polyClampMask<>+0x10(SB)/8, $0xFFFFFFFFFFFFFFFF
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DATA ·polyClampMask<>+0x18(SB)/8, $0xFFFFFFFFFFFFFFFF
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DATA ·sseIncMask<>+0x00(SB)/8, $0x1
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DATA ·sseIncMask<>+0x08(SB)/8, $0x0
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// To load/store the last < 16 bytes in a buffer
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DATA ·andMask<>+0x00(SB)/8, $0x00000000000000ff
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DATA ·andMask<>+0x08(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x10(SB)/8, $0x000000000000ffff
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DATA ·andMask<>+0x18(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x20(SB)/8, $0x0000000000ffffff
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DATA ·andMask<>+0x28(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x30(SB)/8, $0x00000000ffffffff
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DATA ·andMask<>+0x38(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x40(SB)/8, $0x000000ffffffffff
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DATA ·andMask<>+0x48(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x50(SB)/8, $0x0000ffffffffffff
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DATA ·andMask<>+0x58(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x60(SB)/8, $0x00ffffffffffffff
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DATA ·andMask<>+0x68(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x70(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0x78(SB)/8, $0x0000000000000000
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DATA ·andMask<>+0x80(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0x88(SB)/8, $0x00000000000000ff
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DATA ·andMask<>+0x90(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0x98(SB)/8, $0x000000000000ffff
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DATA ·andMask<>+0xa0(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0xa8(SB)/8, $0x0000000000ffffff
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DATA ·andMask<>+0xb0(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0xb8(SB)/8, $0x00000000ffffffff
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DATA ·andMask<>+0xc0(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0xc8(SB)/8, $0x000000ffffffffff
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DATA ·andMask<>+0xd0(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0xd8(SB)/8, $0x0000ffffffffffff
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DATA ·andMask<>+0xe0(SB)/8, $0xffffffffffffffff
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DATA ·andMask<>+0xe8(SB)/8, $0x00ffffffffffffff
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GLOBL ·chacha20Constants<>(SB), (NOPTR+RODATA), $32
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GLOBL ·rol16<>(SB), (NOPTR+RODATA), $32
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GLOBL ·rol8<>(SB), (NOPTR+RODATA), $32
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GLOBL ·sseIncMask<>(SB), (NOPTR+RODATA), $16
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GLOBL ·avx2IncMask<>(SB), (NOPTR+RODATA), $32
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GLOBL ·avx2InitMask<>(SB), (NOPTR+RODATA), $32
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GLOBL ·polyClampMask<>(SB), (NOPTR+RODATA), $32
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GLOBL ·andMask<>(SB), (NOPTR+RODATA), $240
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// No PALIGNR in Go ASM yet (but VPALIGNR is present).
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#define shiftB0Left BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xdb; BYTE $0x04 // PALIGNR $4, X3, X3
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#define shiftB1Left BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xe4; BYTE $0x04 // PALIGNR $4, X4, X4
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#define shiftB2Left BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xed; BYTE $0x04 // PALIGNR $4, X5, X5
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#define shiftB3Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xed; BYTE $0x04 // PALIGNR $4, X13, X13
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#define shiftC0Left BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xf6; BYTE $0x08 // PALIGNR $8, X6, X6
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#define shiftC1Left BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xff; BYTE $0x08 // PALIGNR $8, X7, X7
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#define shiftC2Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xc0; BYTE $0x08 // PALIGNR $8, X8, X8
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#define shiftC3Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xf6; BYTE $0x08 // PALIGNR $8, X14, X14
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#define shiftD0Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xc9; BYTE $0x0c // PALIGNR $12, X9, X9
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#define shiftD1Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xd2; BYTE $0x0c // PALIGNR $12, X10, X10
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#define shiftD2Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xdb; BYTE $0x0c // PALIGNR $12, X11, X11
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#define shiftD3Left BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xff; BYTE $0x0c // PALIGNR $12, X15, X15
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#define shiftB0Right BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xdb; BYTE $0x0c // PALIGNR $12, X3, X3
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#define shiftB1Right BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xe4; BYTE $0x0c // PALIGNR $12, X4, X4
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#define shiftB2Right BYTE $0x66; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xed; BYTE $0x0c // PALIGNR $12, X5, X5
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#define shiftB3Right BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xed; BYTE $0x0c // PALIGNR $12, X13, X13
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#define shiftC0Right shiftC0Left
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#define shiftC1Right shiftC1Left
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#define shiftC2Right shiftC2Left
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#define shiftC3Right shiftC3Left
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#define shiftD0Right BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xc9; BYTE $0x04 // PALIGNR $4, X9, X9
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#define shiftD1Right BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xd2; BYTE $0x04 // PALIGNR $4, X10, X10
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#define shiftD2Right BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xdb; BYTE $0x04 // PALIGNR $4, X11, X11
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#define shiftD3Right BYTE $0x66; BYTE $0x45; BYTE $0x0f; BYTE $0x3a; BYTE $0x0f; BYTE $0xff; BYTE $0x04 // PALIGNR $4, X15, X15
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// Some macros
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#define chachaQR(A, B, C, D, T) \
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PADDD B, A; PXOR A, D; PSHUFB ·rol16<>(SB), D \
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PADDD D, C; PXOR C, B; MOVO B, T; PSLLL $12, T; PSRLL $20, B; PXOR T, B \
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PADDD B, A; PXOR A, D; PSHUFB ·rol8<>(SB), D \
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PADDD D, C; PXOR C, B; MOVO B, T; PSLLL $7, T; PSRLL $25, B; PXOR T, B
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#define chachaQR_AVX2(A, B, C, D, T) \
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VPADDD B, A, A; VPXOR A, D, D; VPSHUFB ·rol16<>(SB), D, D \
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VPADDD D, C, C; VPXOR C, B, B; VPSLLD $12, B, T; VPSRLD $20, B, B; VPXOR T, B, B \
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VPADDD B, A, A; VPXOR A, D, D; VPSHUFB ·rol8<>(SB), D, D \
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VPADDD D, C, C; VPXOR C, B, B; VPSLLD $7, B, T; VPSRLD $25, B, B; VPXOR T, B, B
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#define polyAdd(S) ADDQ S, acc0; ADCQ 8+S, acc1; ADCQ $1, acc2
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#define polyMulStage1 MOVQ (0*8)(BP), AX; MOVQ AX, t2; MULQ acc0; MOVQ AX, t0; MOVQ DX, t1; MOVQ (0*8)(BP), AX; MULQ acc1; IMULQ acc2, t2; ADDQ AX, t1; ADCQ DX, t2
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#define polyMulStage2 MOVQ (1*8)(BP), AX; MOVQ AX, t3; MULQ acc0; ADDQ AX, t1; ADCQ $0, DX; MOVQ DX, acc0; MOVQ (1*8)(BP), AX; MULQ acc1; ADDQ AX, t2; ADCQ $0, DX
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#define polyMulStage3 IMULQ acc2, t3; ADDQ acc0, t2; ADCQ DX, t3
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#define polyMulReduceStage MOVQ t0, acc0; MOVQ t1, acc1; MOVQ t2, acc2; ANDQ $3, acc2; MOVQ t2, t0; ANDQ $-4, t0; MOVQ t3, t1; SHRQ $2, t2:t3; SHRQ $2, t3; ADDQ t0, acc0; ADCQ t1, acc1; ADCQ $0, acc2; ADDQ t2, acc0; ADCQ t3, acc1; ADCQ $0, acc2
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#define polyMulStage1_AVX2 MOVQ (0*8)(BP), DX; MOVQ DX, t2; MULXQ acc0, t0, t1; IMULQ acc2, t2; MULXQ acc1, AX, DX; ADDQ AX, t1; ADCQ DX, t2
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#define polyMulStage2_AVX2 MOVQ (1*8)(BP), DX; MULXQ acc0, acc0, AX; ADDQ acc0, t1; MULXQ acc1, acc1, t3; ADCQ acc1, t2; ADCQ $0, t3
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#define polyMulStage3_AVX2 IMULQ acc2, DX; ADDQ AX, t2; ADCQ DX, t3
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#define polyMul polyMulStage1; polyMulStage2; polyMulStage3; polyMulReduceStage
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#define polyMulAVX2 polyMulStage1_AVX2; polyMulStage2_AVX2; polyMulStage3_AVX2; polyMulReduceStage
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// ----------------------------------------------------------------------------
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TEXT polyHashADInternal<>(SB), NOSPLIT, $0
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// adp points to beginning of additional data
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// itr2 holds ad length
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XORQ acc0, acc0
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XORQ acc1, acc1
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XORQ acc2, acc2
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CMPQ itr2, $13
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JNE hashADLoop
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openFastTLSAD:
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// Special treatment for the TLS case of 13 bytes
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MOVQ (adp), acc0
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MOVQ 5(adp), acc1
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SHRQ $24, acc1
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MOVQ $1, acc2
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polyMul
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RET
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hashADLoop:
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// Hash in 16 byte chunks
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CMPQ itr2, $16
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JB hashADTail
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polyAdd(0(adp))
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LEAQ (1*16)(adp), adp
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SUBQ $16, itr2
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polyMul
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JMP hashADLoop
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hashADTail:
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CMPQ itr2, $0
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JE hashADDone
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// Hash last < 16 byte tail
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XORQ t0, t0
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XORQ t1, t1
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XORQ t2, t2
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ADDQ itr2, adp
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hashADTailLoop:
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SHLQ $8, t1:t0
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SHLQ $8, t0
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MOVB -1(adp), t2
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XORQ t2, t0
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DECQ adp
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DECQ itr2
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JNE hashADTailLoop
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hashADTailFinish:
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ADDQ t0, acc0; ADCQ t1, acc1; ADCQ $1, acc2
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polyMul
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// Finished AD
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hashADDone:
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RET
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// ----------------------------------------------------------------------------
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// func chacha20Poly1305Open(dst, key, src, ad []byte) bool
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TEXT ·chacha20Poly1305Open(SB), 0, $288-97
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// For aligned stack access
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MOVQ SP, BP
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ADDQ $32, BP
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ANDQ $-32, BP
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MOVQ dst+0(FP), oup
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MOVQ key+24(FP), keyp
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MOVQ src+48(FP), inp
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MOVQ src_len+56(FP), inl
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MOVQ ad+72(FP), adp
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// Check for AVX2 support
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CMPB ·useAVX2(SB), $1
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JE chacha20Poly1305Open_AVX2
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// Special optimization, for very short buffers
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CMPQ inl, $128
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JBE openSSE128 // About 16% faster
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// For long buffers, prepare the poly key first
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MOVOU ·chacha20Constants<>(SB), A0
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MOVOU (1*16)(keyp), B0
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MOVOU (2*16)(keyp), C0
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MOVOU (3*16)(keyp), D0
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MOVO D0, T1
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// Store state on stack for future use
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MOVO B0, state1Store
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MOVO C0, state2Store
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MOVO D0, ctr3Store
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MOVQ $10, itr2
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openSSEPreparePolyKey:
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chachaQR(A0, B0, C0, D0, T0)
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shiftB0Left; shiftC0Left; shiftD0Left
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chachaQR(A0, B0, C0, D0, T0)
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shiftB0Right; shiftC0Right; shiftD0Right
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DECQ itr2
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JNE openSSEPreparePolyKey
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// A0|B0 hold the Poly1305 32-byte key, C0,D0 can be discarded
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PADDL ·chacha20Constants<>(SB), A0; PADDL state1Store, B0
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// Clamp and store the key
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PAND ·polyClampMask<>(SB), A0
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MOVO A0, rStore; MOVO B0, sStore
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// Hash AAD
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MOVQ ad_len+80(FP), itr2
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CALL polyHashADInternal<>(SB)
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openSSEMainLoop:
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CMPQ inl, $256
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JB openSSEMainLoopDone
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// Load state, increment counter blocks
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MOVO ·chacha20Constants<>(SB), A0; MOVO state1Store, B0; MOVO state2Store, C0; MOVO ctr3Store, D0; PADDL ·sseIncMask<>(SB), D0
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MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1
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MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2
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MOVO A2, A3; MOVO B2, B3; MOVO C2, C3; MOVO D2, D3; PADDL ·sseIncMask<>(SB), D3
|
|
|
|
// Store counters
|
|
MOVO D0, ctr0Store; MOVO D1, ctr1Store; MOVO D2, ctr2Store; MOVO D3, ctr3Store
|
|
|
|
// There are 10 ChaCha20 iterations of 2QR each, so for 6 iterations we hash 2 blocks, and for the remaining 4 only 1 block - for a total of 16
|
|
MOVQ $4, itr1
|
|
MOVQ inp, itr2
|
|
|
|
openSSEInternalLoop:
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
polyAdd(0(itr2))
|
|
shiftB0Left; shiftB1Left; shiftB2Left; shiftB3Left
|
|
shiftC0Left; shiftC1Left; shiftC2Left; shiftC3Left
|
|
shiftD0Left; shiftD1Left; shiftD2Left; shiftD3Left
|
|
polyMulStage1
|
|
polyMulStage2
|
|
LEAQ (2*8)(itr2), itr2
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
polyMulStage3
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
polyMulReduceStage
|
|
shiftB0Right; shiftB1Right; shiftB2Right; shiftB3Right
|
|
shiftC0Right; shiftC1Right; shiftC2Right; shiftC3Right
|
|
shiftD0Right; shiftD1Right; shiftD2Right; shiftD3Right
|
|
DECQ itr1
|
|
JGE openSSEInternalLoop
|
|
|
|
polyAdd(0(itr2))
|
|
polyMul
|
|
LEAQ (2*8)(itr2), itr2
|
|
|
|
CMPQ itr1, $-6
|
|
JG openSSEInternalLoop
|
|
|
|
// Add in the state
|
|
PADDD ·chacha20Constants<>(SB), A0; PADDD ·chacha20Constants<>(SB), A1; PADDD ·chacha20Constants<>(SB), A2; PADDD ·chacha20Constants<>(SB), A3
|
|
PADDD state1Store, B0; PADDD state1Store, B1; PADDD state1Store, B2; PADDD state1Store, B3
|
|
PADDD state2Store, C0; PADDD state2Store, C1; PADDD state2Store, C2; PADDD state2Store, C3
|
|
PADDD ctr0Store, D0; PADDD ctr1Store, D1; PADDD ctr2Store, D2; PADDD ctr3Store, D3
|
|
|
|
// Load - xor - store
|
|
MOVO D3, tmpStore
|
|
MOVOU (0*16)(inp), D3; PXOR D3, A0; MOVOU A0, (0*16)(oup)
|
|
MOVOU (1*16)(inp), D3; PXOR D3, B0; MOVOU B0, (1*16)(oup)
|
|
MOVOU (2*16)(inp), D3; PXOR D3, C0; MOVOU C0, (2*16)(oup)
|
|
MOVOU (3*16)(inp), D3; PXOR D3, D0; MOVOU D0, (3*16)(oup)
|
|
MOVOU (4*16)(inp), D0; PXOR D0, A1; MOVOU A1, (4*16)(oup)
|
|
MOVOU (5*16)(inp), D0; PXOR D0, B1; MOVOU B1, (5*16)(oup)
|
|
MOVOU (6*16)(inp), D0; PXOR D0, C1; MOVOU C1, (6*16)(oup)
|
|
MOVOU (7*16)(inp), D0; PXOR D0, D1; MOVOU D1, (7*16)(oup)
|
|
MOVOU (8*16)(inp), D0; PXOR D0, A2; MOVOU A2, (8*16)(oup)
|
|
MOVOU (9*16)(inp), D0; PXOR D0, B2; MOVOU B2, (9*16)(oup)
|
|
MOVOU (10*16)(inp), D0; PXOR D0, C2; MOVOU C2, (10*16)(oup)
|
|
MOVOU (11*16)(inp), D0; PXOR D0, D2; MOVOU D2, (11*16)(oup)
|
|
MOVOU (12*16)(inp), D0; PXOR D0, A3; MOVOU A3, (12*16)(oup)
|
|
MOVOU (13*16)(inp), D0; PXOR D0, B3; MOVOU B3, (13*16)(oup)
|
|
MOVOU (14*16)(inp), D0; PXOR D0, C3; MOVOU C3, (14*16)(oup)
|
|
MOVOU (15*16)(inp), D0; PXOR tmpStore, D0; MOVOU D0, (15*16)(oup)
|
|
LEAQ 256(inp), inp
|
|
LEAQ 256(oup), oup
|
|
SUBQ $256, inl
|
|
JMP openSSEMainLoop
|
|
|
|
openSSEMainLoopDone:
|
|
// Handle the various tail sizes efficiently
|
|
TESTQ inl, inl
|
|
JE openSSEFinalize
|
|
CMPQ inl, $64
|
|
JBE openSSETail64
|
|
CMPQ inl, $128
|
|
JBE openSSETail128
|
|
CMPQ inl, $192
|
|
JBE openSSETail192
|
|
JMP openSSETail256
|
|
|
|
openSSEFinalize:
|
|
// Hash in the PT, AAD lengths
|
|
ADDQ ad_len+80(FP), acc0; ADCQ src_len+56(FP), acc1; ADCQ $1, acc2
|
|
polyMul
|
|
|
|
// Final reduce
|
|
MOVQ acc0, t0
|
|
MOVQ acc1, t1
|
|
MOVQ acc2, t2
|
|
SUBQ $-5, acc0
|
|
SBBQ $-1, acc1
|
|
SBBQ $3, acc2
|
|
CMOVQCS t0, acc0
|
|
CMOVQCS t1, acc1
|
|
CMOVQCS t2, acc2
|
|
|
|
// Add in the "s" part of the key
|
|
ADDQ 0+sStore, acc0
|
|
ADCQ 8+sStore, acc1
|
|
|
|
// Finally, constant time compare to the tag at the end of the message
|
|
XORQ AX, AX
|
|
MOVQ $1, DX
|
|
XORQ (0*8)(inp), acc0
|
|
XORQ (1*8)(inp), acc1
|
|
ORQ acc1, acc0
|
|
CMOVQEQ DX, AX
|
|
|
|
// Return true iff tags are equal
|
|
MOVB AX, ret+96(FP)
|
|
RET
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for buffers smaller than 129 bytes
|
|
openSSE128:
|
|
// For up to 128 bytes of ciphertext and 64 bytes for the poly key, we require to process three blocks
|
|
MOVOU ·chacha20Constants<>(SB), A0; MOVOU (1*16)(keyp), B0; MOVOU (2*16)(keyp), C0; MOVOU (3*16)(keyp), D0
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1
|
|
MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2
|
|
MOVO B0, T1; MOVO C0, T2; MOVO D1, T3
|
|
MOVQ $10, itr2
|
|
|
|
openSSE128InnerCipherLoop:
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Left; shiftB1Left; shiftB2Left
|
|
shiftC0Left; shiftC1Left; shiftC2Left
|
|
shiftD0Left; shiftD1Left; shiftD2Left
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Right; shiftB1Right; shiftB2Right
|
|
shiftC0Right; shiftC1Right; shiftC2Right
|
|
shiftD0Right; shiftD1Right; shiftD2Right
|
|
DECQ itr2
|
|
JNE openSSE128InnerCipherLoop
|
|
|
|
// A0|B0 hold the Poly1305 32-byte key, C0,D0 can be discarded
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL ·chacha20Constants<>(SB), A1; PADDL ·chacha20Constants<>(SB), A2
|
|
PADDL T1, B0; PADDL T1, B1; PADDL T1, B2
|
|
PADDL T2, C1; PADDL T2, C2
|
|
PADDL T3, D1; PADDL ·sseIncMask<>(SB), T3; PADDL T3, D2
|
|
|
|
// Clamp and store the key
|
|
PAND ·polyClampMask<>(SB), A0
|
|
MOVOU A0, rStore; MOVOU B0, sStore
|
|
|
|
// Hash
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
|
|
openSSE128Open:
|
|
CMPQ inl, $16
|
|
JB openSSETail16
|
|
SUBQ $16, inl
|
|
|
|
// Load for hashing
|
|
polyAdd(0(inp))
|
|
|
|
// Load for decryption
|
|
MOVOU (inp), T0; PXOR T0, A1; MOVOU A1, (oup)
|
|
LEAQ (1*16)(inp), inp
|
|
LEAQ (1*16)(oup), oup
|
|
polyMul
|
|
|
|
// Shift the stream "left"
|
|
MOVO B1, A1
|
|
MOVO C1, B1
|
|
MOVO D1, C1
|
|
MOVO A2, D1
|
|
MOVO B2, A2
|
|
MOVO C2, B2
|
|
MOVO D2, C2
|
|
JMP openSSE128Open
|
|
|
|
openSSETail16:
|
|
TESTQ inl, inl
|
|
JE openSSEFinalize
|
|
|
|
// We can safely load the CT from the end, because it is padded with the MAC
|
|
MOVQ inl, itr2
|
|
SHLQ $4, itr2
|
|
LEAQ ·andMask<>(SB), t0
|
|
MOVOU (inp), T0
|
|
ADDQ inl, inp
|
|
PAND -16(t0)(itr2*1), T0
|
|
MOVO T0, 0+tmpStore
|
|
MOVQ T0, t0
|
|
MOVQ 8+tmpStore, t1
|
|
PXOR A1, T0
|
|
|
|
// We can only store one byte at a time, since plaintext can be shorter than 16 bytes
|
|
openSSETail16Store:
|
|
MOVQ T0, t3
|
|
MOVB t3, (oup)
|
|
PSRLDQ $1, T0
|
|
INCQ oup
|
|
DECQ inl
|
|
JNE openSSETail16Store
|
|
ADDQ t0, acc0; ADCQ t1, acc1; ADCQ $1, acc2
|
|
polyMul
|
|
JMP openSSEFinalize
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 64 bytes of ciphertext
|
|
openSSETail64:
|
|
// Need to decrypt up to 64 bytes - prepare single block
|
|
MOVO ·chacha20Constants<>(SB), A0; MOVO state1Store, B0; MOVO state2Store, C0; MOVO ctr3Store, D0; PADDL ·sseIncMask<>(SB), D0; MOVO D0, ctr0Store
|
|
XORQ itr2, itr2
|
|
MOVQ inl, itr1
|
|
CMPQ itr1, $16
|
|
JB openSSETail64LoopB
|
|
|
|
openSSETail64LoopA:
|
|
// Perform ChaCha rounds, while hashing the remaining input
|
|
polyAdd(0(inp)(itr2*1))
|
|
polyMul
|
|
SUBQ $16, itr1
|
|
|
|
openSSETail64LoopB:
|
|
ADDQ $16, itr2
|
|
chachaQR(A0, B0, C0, D0, T0)
|
|
shiftB0Left; shiftC0Left; shiftD0Left
|
|
chachaQR(A0, B0, C0, D0, T0)
|
|
shiftB0Right; shiftC0Right; shiftD0Right
|
|
|
|
CMPQ itr1, $16
|
|
JAE openSSETail64LoopA
|
|
|
|
CMPQ itr2, $160
|
|
JNE openSSETail64LoopB
|
|
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL state1Store, B0; PADDL state2Store, C0; PADDL ctr0Store, D0
|
|
|
|
openSSETail64DecLoop:
|
|
CMPQ inl, $16
|
|
JB openSSETail64DecLoopDone
|
|
SUBQ $16, inl
|
|
MOVOU (inp), T0
|
|
PXOR T0, A0
|
|
MOVOU A0, (oup)
|
|
LEAQ 16(inp), inp
|
|
LEAQ 16(oup), oup
|
|
MOVO B0, A0
|
|
MOVO C0, B0
|
|
MOVO D0, C0
|
|
JMP openSSETail64DecLoop
|
|
|
|
openSSETail64DecLoopDone:
|
|
MOVO A0, A1
|
|
JMP openSSETail16
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 128 bytes of ciphertext
|
|
openSSETail128:
|
|
// Need to decrypt up to 128 bytes - prepare two blocks
|
|
MOVO ·chacha20Constants<>(SB), A1; MOVO state1Store, B1; MOVO state2Store, C1; MOVO ctr3Store, D1; PADDL ·sseIncMask<>(SB), D1; MOVO D1, ctr0Store
|
|
MOVO A1, A0; MOVO B1, B0; MOVO C1, C0; MOVO D1, D0; PADDL ·sseIncMask<>(SB), D0; MOVO D0, ctr1Store
|
|
XORQ itr2, itr2
|
|
MOVQ inl, itr1
|
|
ANDQ $-16, itr1
|
|
|
|
openSSETail128LoopA:
|
|
// Perform ChaCha rounds, while hashing the remaining input
|
|
polyAdd(0(inp)(itr2*1))
|
|
polyMul
|
|
|
|
openSSETail128LoopB:
|
|
ADDQ $16, itr2
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0)
|
|
shiftB0Left; shiftC0Left; shiftD0Left
|
|
shiftB1Left; shiftC1Left; shiftD1Left
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0)
|
|
shiftB0Right; shiftC0Right; shiftD0Right
|
|
shiftB1Right; shiftC1Right; shiftD1Right
|
|
|
|
CMPQ itr2, itr1
|
|
JB openSSETail128LoopA
|
|
|
|
CMPQ itr2, $160
|
|
JNE openSSETail128LoopB
|
|
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL ·chacha20Constants<>(SB), A1
|
|
PADDL state1Store, B0; PADDL state1Store, B1
|
|
PADDL state2Store, C0; PADDL state2Store, C1
|
|
PADDL ctr1Store, D0; PADDL ctr0Store, D1
|
|
|
|
MOVOU (0*16)(inp), T0; MOVOU (1*16)(inp), T1; MOVOU (2*16)(inp), T2; MOVOU (3*16)(inp), T3
|
|
PXOR T0, A1; PXOR T1, B1; PXOR T2, C1; PXOR T3, D1
|
|
MOVOU A1, (0*16)(oup); MOVOU B1, (1*16)(oup); MOVOU C1, (2*16)(oup); MOVOU D1, (3*16)(oup)
|
|
|
|
SUBQ $64, inl
|
|
LEAQ 64(inp), inp
|
|
LEAQ 64(oup), oup
|
|
JMP openSSETail64DecLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 192 bytes of ciphertext
|
|
openSSETail192:
|
|
// Need to decrypt up to 192 bytes - prepare three blocks
|
|
MOVO ·chacha20Constants<>(SB), A2; MOVO state1Store, B2; MOVO state2Store, C2; MOVO ctr3Store, D2; PADDL ·sseIncMask<>(SB), D2; MOVO D2, ctr0Store
|
|
MOVO A2, A1; MOVO B2, B1; MOVO C2, C1; MOVO D2, D1; PADDL ·sseIncMask<>(SB), D1; MOVO D1, ctr1Store
|
|
MOVO A1, A0; MOVO B1, B0; MOVO C1, C0; MOVO D1, D0; PADDL ·sseIncMask<>(SB), D0; MOVO D0, ctr2Store
|
|
|
|
MOVQ inl, itr1
|
|
MOVQ $160, itr2
|
|
CMPQ itr1, $160
|
|
CMOVQGT itr2, itr1
|
|
ANDQ $-16, itr1
|
|
XORQ itr2, itr2
|
|
|
|
openSSLTail192LoopA:
|
|
// Perform ChaCha rounds, while hashing the remaining input
|
|
polyAdd(0(inp)(itr2*1))
|
|
polyMul
|
|
|
|
openSSLTail192LoopB:
|
|
ADDQ $16, itr2
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Left; shiftC0Left; shiftD0Left
|
|
shiftB1Left; shiftC1Left; shiftD1Left
|
|
shiftB2Left; shiftC2Left; shiftD2Left
|
|
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Right; shiftC0Right; shiftD0Right
|
|
shiftB1Right; shiftC1Right; shiftD1Right
|
|
shiftB2Right; shiftC2Right; shiftD2Right
|
|
|
|
CMPQ itr2, itr1
|
|
JB openSSLTail192LoopA
|
|
|
|
CMPQ itr2, $160
|
|
JNE openSSLTail192LoopB
|
|
|
|
CMPQ inl, $176
|
|
JB openSSLTail192Store
|
|
|
|
polyAdd(160(inp))
|
|
polyMul
|
|
|
|
CMPQ inl, $192
|
|
JB openSSLTail192Store
|
|
|
|
polyAdd(176(inp))
|
|
polyMul
|
|
|
|
openSSLTail192Store:
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL ·chacha20Constants<>(SB), A1; PADDL ·chacha20Constants<>(SB), A2
|
|
PADDL state1Store, B0; PADDL state1Store, B1; PADDL state1Store, B2
|
|
PADDL state2Store, C0; PADDL state2Store, C1; PADDL state2Store, C2
|
|
PADDL ctr2Store, D0; PADDL ctr1Store, D1; PADDL ctr0Store, D2
|
|
|
|
MOVOU (0*16)(inp), T0; MOVOU (1*16)(inp), T1; MOVOU (2*16)(inp), T2; MOVOU (3*16)(inp), T3
|
|
PXOR T0, A2; PXOR T1, B2; PXOR T2, C2; PXOR T3, D2
|
|
MOVOU A2, (0*16)(oup); MOVOU B2, (1*16)(oup); MOVOU C2, (2*16)(oup); MOVOU D2, (3*16)(oup)
|
|
|
|
MOVOU (4*16)(inp), T0; MOVOU (5*16)(inp), T1; MOVOU (6*16)(inp), T2; MOVOU (7*16)(inp), T3
|
|
PXOR T0, A1; PXOR T1, B1; PXOR T2, C1; PXOR T3, D1
|
|
MOVOU A1, (4*16)(oup); MOVOU B1, (5*16)(oup); MOVOU C1, (6*16)(oup); MOVOU D1, (7*16)(oup)
|
|
|
|
SUBQ $128, inl
|
|
LEAQ 128(inp), inp
|
|
LEAQ 128(oup), oup
|
|
JMP openSSETail64DecLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 256 bytes of ciphertext
|
|
openSSETail256:
|
|
// Need to decrypt up to 256 bytes - prepare four blocks
|
|
MOVO ·chacha20Constants<>(SB), A0; MOVO state1Store, B0; MOVO state2Store, C0; MOVO ctr3Store, D0; PADDL ·sseIncMask<>(SB), D0
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1
|
|
MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2
|
|
MOVO A2, A3; MOVO B2, B3; MOVO C2, C3; MOVO D2, D3; PADDL ·sseIncMask<>(SB), D3
|
|
|
|
// Store counters
|
|
MOVO D0, ctr0Store; MOVO D1, ctr1Store; MOVO D2, ctr2Store; MOVO D3, ctr3Store
|
|
XORQ itr2, itr2
|
|
|
|
openSSETail256Loop:
|
|
// This loop inteleaves 8 ChaCha quarter rounds with 1 poly multiplication
|
|
polyAdd(0(inp)(itr2*1))
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
shiftB0Left; shiftB1Left; shiftB2Left; shiftB3Left
|
|
shiftC0Left; shiftC1Left; shiftC2Left; shiftC3Left
|
|
shiftD0Left; shiftD1Left; shiftD2Left; shiftD3Left
|
|
polyMulStage1
|
|
polyMulStage2
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
polyMulStage3
|
|
polyMulReduceStage
|
|
shiftB0Right; shiftB1Right; shiftB2Right; shiftB3Right
|
|
shiftC0Right; shiftC1Right; shiftC2Right; shiftC3Right
|
|
shiftD0Right; shiftD1Right; shiftD2Right; shiftD3Right
|
|
ADDQ $2*8, itr2
|
|
CMPQ itr2, $160
|
|
JB openSSETail256Loop
|
|
MOVQ inl, itr1
|
|
ANDQ $-16, itr1
|
|
|
|
openSSETail256HashLoop:
|
|
polyAdd(0(inp)(itr2*1))
|
|
polyMul
|
|
ADDQ $2*8, itr2
|
|
CMPQ itr2, itr1
|
|
JB openSSETail256HashLoop
|
|
|
|
// Add in the state
|
|
PADDD ·chacha20Constants<>(SB), A0; PADDD ·chacha20Constants<>(SB), A1; PADDD ·chacha20Constants<>(SB), A2; PADDD ·chacha20Constants<>(SB), A3
|
|
PADDD state1Store, B0; PADDD state1Store, B1; PADDD state1Store, B2; PADDD state1Store, B3
|
|
PADDD state2Store, C0; PADDD state2Store, C1; PADDD state2Store, C2; PADDD state2Store, C3
|
|
PADDD ctr0Store, D0; PADDD ctr1Store, D1; PADDD ctr2Store, D2; PADDD ctr3Store, D3
|
|
MOVO D3, tmpStore
|
|
|
|
// Load - xor - store
|
|
MOVOU (0*16)(inp), D3; PXOR D3, A0
|
|
MOVOU (1*16)(inp), D3; PXOR D3, B0
|
|
MOVOU (2*16)(inp), D3; PXOR D3, C0
|
|
MOVOU (3*16)(inp), D3; PXOR D3, D0
|
|
MOVOU A0, (0*16)(oup)
|
|
MOVOU B0, (1*16)(oup)
|
|
MOVOU C0, (2*16)(oup)
|
|
MOVOU D0, (3*16)(oup)
|
|
MOVOU (4*16)(inp), A0; MOVOU (5*16)(inp), B0; MOVOU (6*16)(inp), C0; MOVOU (7*16)(inp), D0
|
|
PXOR A0, A1; PXOR B0, B1; PXOR C0, C1; PXOR D0, D1
|
|
MOVOU A1, (4*16)(oup); MOVOU B1, (5*16)(oup); MOVOU C1, (6*16)(oup); MOVOU D1, (7*16)(oup)
|
|
MOVOU (8*16)(inp), A0; MOVOU (9*16)(inp), B0; MOVOU (10*16)(inp), C0; MOVOU (11*16)(inp), D0
|
|
PXOR A0, A2; PXOR B0, B2; PXOR C0, C2; PXOR D0, D2
|
|
MOVOU A2, (8*16)(oup); MOVOU B2, (9*16)(oup); MOVOU C2, (10*16)(oup); MOVOU D2, (11*16)(oup)
|
|
LEAQ 192(inp), inp
|
|
LEAQ 192(oup), oup
|
|
SUBQ $192, inl
|
|
MOVO A3, A0
|
|
MOVO B3, B0
|
|
MOVO C3, C0
|
|
MOVO tmpStore, D0
|
|
|
|
JMP openSSETail64DecLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ------------------------- AVX2 Code ----------------------------------------
|
|
chacha20Poly1305Open_AVX2:
|
|
VZEROUPPER
|
|
VMOVDQU ·chacha20Constants<>(SB), AA0
|
|
BYTE $0xc4; BYTE $0x42; BYTE $0x7d; BYTE $0x5a; BYTE $0x70; BYTE $0x10 // broadcasti128 16(r8), ymm14
|
|
BYTE $0xc4; BYTE $0x42; BYTE $0x7d; BYTE $0x5a; BYTE $0x60; BYTE $0x20 // broadcasti128 32(r8), ymm12
|
|
BYTE $0xc4; BYTE $0xc2; BYTE $0x7d; BYTE $0x5a; BYTE $0x60; BYTE $0x30 // broadcasti128 48(r8), ymm4
|
|
VPADDD ·avx2InitMask<>(SB), DD0, DD0
|
|
|
|
// Special optimization, for very short buffers
|
|
CMPQ inl, $192
|
|
JBE openAVX2192
|
|
CMPQ inl, $320
|
|
JBE openAVX2320
|
|
|
|
// For the general key prepare the key first - as a byproduct we have 64 bytes of cipher stream
|
|
VMOVDQA BB0, state1StoreAVX2
|
|
VMOVDQA CC0, state2StoreAVX2
|
|
VMOVDQA DD0, ctr3StoreAVX2
|
|
MOVQ $10, itr2
|
|
|
|
openAVX2PreparePolyKey:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $12, DD0, DD0, DD0
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $4, DD0, DD0, DD0
|
|
DECQ itr2
|
|
JNE openAVX2PreparePolyKey
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0
|
|
VPADDD state1StoreAVX2, BB0, BB0
|
|
VPADDD state2StoreAVX2, CC0, CC0
|
|
VPADDD ctr3StoreAVX2, DD0, DD0
|
|
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
|
|
// Clamp and store poly key
|
|
VPAND ·polyClampMask<>(SB), TT0, TT0
|
|
VMOVDQA TT0, rsStoreAVX2
|
|
|
|
// Stream for the first 64 bytes
|
|
VPERM2I128 $0x13, AA0, BB0, AA0
|
|
VPERM2I128 $0x13, CC0, DD0, BB0
|
|
|
|
// Hash AD + first 64 bytes
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
XORQ itr1, itr1
|
|
|
|
openAVX2InitialHash64:
|
|
polyAdd(0(inp)(itr1*1))
|
|
polyMulAVX2
|
|
ADDQ $16, itr1
|
|
CMPQ itr1, $64
|
|
JNE openAVX2InitialHash64
|
|
|
|
// Decrypt the first 64 bytes
|
|
VPXOR (0*32)(inp), AA0, AA0
|
|
VPXOR (1*32)(inp), BB0, BB0
|
|
VMOVDQU AA0, (0*32)(oup)
|
|
VMOVDQU BB0, (1*32)(oup)
|
|
LEAQ (2*32)(inp), inp
|
|
LEAQ (2*32)(oup), oup
|
|
SUBQ $64, inl
|
|
|
|
openAVX2MainLoop:
|
|
CMPQ inl, $512
|
|
JB openAVX2MainLoopDone
|
|
|
|
// Load state, increment counter blocks, store the incremented counters
|
|
VMOVDQU ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2; VMOVDQA AA0, AA3
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2; VMOVDQA BB0, BB3
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2; VMOVDQA CC0, CC3
|
|
VMOVDQA ctr3StoreAVX2, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD1; VPADDD ·avx2IncMask<>(SB), DD1, DD2; VPADDD ·avx2IncMask<>(SB), DD2, DD3
|
|
VMOVDQA DD0, ctr0StoreAVX2; VMOVDQA DD1, ctr1StoreAVX2; VMOVDQA DD2, ctr2StoreAVX2; VMOVDQA DD3, ctr3StoreAVX2
|
|
XORQ itr1, itr1
|
|
|
|
openAVX2InternalLoop:
|
|
// Lets just say this spaghetti loop interleaves 2 quarter rounds with 3 poly multiplications
|
|
// Effectively per 512 bytes of stream we hash 480 bytes of ciphertext
|
|
polyAdd(0*8(inp)(itr1*1))
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
polyMulStage1_AVX2
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
polyMulStage2_AVX2
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
polyMulStage3_AVX2
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulReduceStage
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
polyAdd(2*8(inp)(itr1*1))
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
polyMulStage1_AVX2
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulStage2_AVX2
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2; VPALIGNR $4, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2; VPALIGNR $12, DD3, DD3, DD3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
polyMulStage3_AVX2
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
polyMulReduceStage
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
polyAdd(4*8(inp)(itr1*1))
|
|
LEAQ (6*8)(itr1), itr1
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulStage1_AVX2
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
polyMulStage2_AVX2
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
polyMulStage3_AVX2
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulReduceStage
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2; VPALIGNR $12, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2; VPALIGNR $4, DD3, DD3, DD3
|
|
CMPQ itr1, $480
|
|
JNE openAVX2InternalLoop
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2; VPADDD ·chacha20Constants<>(SB), AA3, AA3
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2; VPADDD state1StoreAVX2, BB3, BB3
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2; VPADDD state2StoreAVX2, CC3, CC3
|
|
VPADDD ctr0StoreAVX2, DD0, DD0; VPADDD ctr1StoreAVX2, DD1, DD1; VPADDD ctr2StoreAVX2, DD2, DD2; VPADDD ctr3StoreAVX2, DD3, DD3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
|
|
// We only hashed 480 of the 512 bytes available - hash the remaining 32 here
|
|
polyAdd(480(inp))
|
|
polyMulAVX2
|
|
VPERM2I128 $0x02, AA0, BB0, CC3; VPERM2I128 $0x13, AA0, BB0, BB0; VPERM2I128 $0x02, CC0, DD0, AA0; VPERM2I128 $0x13, CC0, DD0, CC0
|
|
VPXOR (0*32)(inp), CC3, CC3; VPXOR (1*32)(inp), AA0, AA0; VPXOR (2*32)(inp), BB0, BB0; VPXOR (3*32)(inp), CC0, CC0
|
|
VMOVDQU CC3, (0*32)(oup); VMOVDQU AA0, (1*32)(oup); VMOVDQU BB0, (2*32)(oup); VMOVDQU CC0, (3*32)(oup)
|
|
VPERM2I128 $0x02, AA1, BB1, AA0; VPERM2I128 $0x02, CC1, DD1, BB0; VPERM2I128 $0x13, AA1, BB1, CC0; VPERM2I128 $0x13, CC1, DD1, DD0
|
|
VPXOR (4*32)(inp), AA0, AA0; VPXOR (5*32)(inp), BB0, BB0; VPXOR (6*32)(inp), CC0, CC0; VPXOR (7*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (4*32)(oup); VMOVDQU BB0, (5*32)(oup); VMOVDQU CC0, (6*32)(oup); VMOVDQU DD0, (7*32)(oup)
|
|
|
|
// and here
|
|
polyAdd(496(inp))
|
|
polyMulAVX2
|
|
VPERM2I128 $0x02, AA2, BB2, AA0; VPERM2I128 $0x02, CC2, DD2, BB0; VPERM2I128 $0x13, AA2, BB2, CC0; VPERM2I128 $0x13, CC2, DD2, DD0
|
|
VPXOR (8*32)(inp), AA0, AA0; VPXOR (9*32)(inp), BB0, BB0; VPXOR (10*32)(inp), CC0, CC0; VPXOR (11*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (8*32)(oup); VMOVDQU BB0, (9*32)(oup); VMOVDQU CC0, (10*32)(oup); VMOVDQU DD0, (11*32)(oup)
|
|
VPERM2I128 $0x02, AA3, BB3, AA0; VPERM2I128 $0x02, tmpStoreAVX2, DD3, BB0; VPERM2I128 $0x13, AA3, BB3, CC0; VPERM2I128 $0x13, tmpStoreAVX2, DD3, DD0
|
|
VPXOR (12*32)(inp), AA0, AA0; VPXOR (13*32)(inp), BB0, BB0; VPXOR (14*32)(inp), CC0, CC0; VPXOR (15*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (12*32)(oup); VMOVDQU BB0, (13*32)(oup); VMOVDQU CC0, (14*32)(oup); VMOVDQU DD0, (15*32)(oup)
|
|
LEAQ (32*16)(inp), inp
|
|
LEAQ (32*16)(oup), oup
|
|
SUBQ $(32*16), inl
|
|
JMP openAVX2MainLoop
|
|
|
|
openAVX2MainLoopDone:
|
|
// Handle the various tail sizes efficiently
|
|
TESTQ inl, inl
|
|
JE openSSEFinalize
|
|
CMPQ inl, $128
|
|
JBE openAVX2Tail128
|
|
CMPQ inl, $256
|
|
JBE openAVX2Tail256
|
|
CMPQ inl, $384
|
|
JBE openAVX2Tail384
|
|
JMP openAVX2Tail512
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for buffers smaller than 193 bytes
|
|
openAVX2192:
|
|
// For up to 192 bytes of ciphertext and 64 bytes for the poly key, we process four blocks
|
|
VMOVDQA AA0, AA1
|
|
VMOVDQA BB0, BB1
|
|
VMOVDQA CC0, CC1
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VMOVDQA AA0, AA2
|
|
VMOVDQA BB0, BB2
|
|
VMOVDQA CC0, CC2
|
|
VMOVDQA DD0, DD2
|
|
VMOVDQA DD1, TT3
|
|
MOVQ $10, itr2
|
|
|
|
openAVX2192InnerCipherLoop:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1
|
|
DECQ itr2
|
|
JNE openAVX2192InnerCipherLoop
|
|
VPADDD AA2, AA0, AA0; VPADDD AA2, AA1, AA1
|
|
VPADDD BB2, BB0, BB0; VPADDD BB2, BB1, BB1
|
|
VPADDD CC2, CC0, CC0; VPADDD CC2, CC1, CC1
|
|
VPADDD DD2, DD0, DD0; VPADDD TT3, DD1, DD1
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
|
|
// Clamp and store poly key
|
|
VPAND ·polyClampMask<>(SB), TT0, TT0
|
|
VMOVDQA TT0, rsStoreAVX2
|
|
|
|
// Stream for up to 192 bytes
|
|
VPERM2I128 $0x13, AA0, BB0, AA0
|
|
VPERM2I128 $0x13, CC0, DD0, BB0
|
|
VPERM2I128 $0x02, AA1, BB1, CC0
|
|
VPERM2I128 $0x02, CC1, DD1, DD0
|
|
VPERM2I128 $0x13, AA1, BB1, AA1
|
|
VPERM2I128 $0x13, CC1, DD1, BB1
|
|
|
|
openAVX2ShortOpen:
|
|
// Hash
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
|
|
openAVX2ShortOpenLoop:
|
|
CMPQ inl, $32
|
|
JB openAVX2ShortTail32
|
|
SUBQ $32, inl
|
|
|
|
// Load for hashing
|
|
polyAdd(0*8(inp))
|
|
polyMulAVX2
|
|
polyAdd(2*8(inp))
|
|
polyMulAVX2
|
|
|
|
// Load for decryption
|
|
VPXOR (inp), AA0, AA0
|
|
VMOVDQU AA0, (oup)
|
|
LEAQ (1*32)(inp), inp
|
|
LEAQ (1*32)(oup), oup
|
|
|
|
// Shift stream left
|
|
VMOVDQA BB0, AA0
|
|
VMOVDQA CC0, BB0
|
|
VMOVDQA DD0, CC0
|
|
VMOVDQA AA1, DD0
|
|
VMOVDQA BB1, AA1
|
|
VMOVDQA CC1, BB1
|
|
VMOVDQA DD1, CC1
|
|
VMOVDQA AA2, DD1
|
|
VMOVDQA BB2, AA2
|
|
JMP openAVX2ShortOpenLoop
|
|
|
|
openAVX2ShortTail32:
|
|
CMPQ inl, $16
|
|
VMOVDQA A0, A1
|
|
JB openAVX2ShortDone
|
|
|
|
SUBQ $16, inl
|
|
|
|
// Load for hashing
|
|
polyAdd(0*8(inp))
|
|
polyMulAVX2
|
|
|
|
// Load for decryption
|
|
VPXOR (inp), A0, T0
|
|
VMOVDQU T0, (oup)
|
|
LEAQ (1*16)(inp), inp
|
|
LEAQ (1*16)(oup), oup
|
|
VPERM2I128 $0x11, AA0, AA0, AA0
|
|
VMOVDQA A0, A1
|
|
|
|
openAVX2ShortDone:
|
|
VZEROUPPER
|
|
JMP openSSETail16
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for buffers smaller than 321 bytes
|
|
openAVX2320:
|
|
// For up to 320 bytes of ciphertext and 64 bytes for the poly key, we process six blocks
|
|
VMOVDQA AA0, AA1; VMOVDQA BB0, BB1; VMOVDQA CC0, CC1; VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VMOVDQA AA0, AA2; VMOVDQA BB0, BB2; VMOVDQA CC0, CC2; VPADDD ·avx2IncMask<>(SB), DD1, DD2
|
|
VMOVDQA BB0, TT1; VMOVDQA CC0, TT2; VMOVDQA DD0, TT3
|
|
MOVQ $10, itr2
|
|
|
|
openAVX2320InnerCipherLoop:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2
|
|
DECQ itr2
|
|
JNE openAVX2320InnerCipherLoop
|
|
|
|
VMOVDQA ·chacha20Constants<>(SB), TT0
|
|
VPADDD TT0, AA0, AA0; VPADDD TT0, AA1, AA1; VPADDD TT0, AA2, AA2
|
|
VPADDD TT1, BB0, BB0; VPADDD TT1, BB1, BB1; VPADDD TT1, BB2, BB2
|
|
VPADDD TT2, CC0, CC0; VPADDD TT2, CC1, CC1; VPADDD TT2, CC2, CC2
|
|
VMOVDQA ·avx2IncMask<>(SB), TT0
|
|
VPADDD TT3, DD0, DD0; VPADDD TT0, TT3, TT3
|
|
VPADDD TT3, DD1, DD1; VPADDD TT0, TT3, TT3
|
|
VPADDD TT3, DD2, DD2
|
|
|
|
// Clamp and store poly key
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
VPAND ·polyClampMask<>(SB), TT0, TT0
|
|
VMOVDQA TT0, rsStoreAVX2
|
|
|
|
// Stream for up to 320 bytes
|
|
VPERM2I128 $0x13, AA0, BB0, AA0
|
|
VPERM2I128 $0x13, CC0, DD0, BB0
|
|
VPERM2I128 $0x02, AA1, BB1, CC0
|
|
VPERM2I128 $0x02, CC1, DD1, DD0
|
|
VPERM2I128 $0x13, AA1, BB1, AA1
|
|
VPERM2I128 $0x13, CC1, DD1, BB1
|
|
VPERM2I128 $0x02, AA2, BB2, CC1
|
|
VPERM2I128 $0x02, CC2, DD2, DD1
|
|
VPERM2I128 $0x13, AA2, BB2, AA2
|
|
VPERM2I128 $0x13, CC2, DD2, BB2
|
|
JMP openAVX2ShortOpen
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 128 bytes of ciphertext
|
|
openAVX2Tail128:
|
|
// Need to decrypt up to 128 bytes - prepare two blocks
|
|
VMOVDQA ·chacha20Constants<>(SB), AA1
|
|
VMOVDQA state1StoreAVX2, BB1
|
|
VMOVDQA state2StoreAVX2, CC1
|
|
VMOVDQA ctr3StoreAVX2, DD1
|
|
VPADDD ·avx2IncMask<>(SB), DD1, DD1
|
|
VMOVDQA DD1, DD0
|
|
|
|
XORQ itr2, itr2
|
|
MOVQ inl, itr1
|
|
ANDQ $-16, itr1
|
|
TESTQ itr1, itr1
|
|
JE openAVX2Tail128LoopB
|
|
|
|
openAVX2Tail128LoopA:
|
|
// Perform ChaCha rounds, while hashing the remaining input
|
|
polyAdd(0(inp)(itr2*1))
|
|
polyMulAVX2
|
|
|
|
openAVX2Tail128LoopB:
|
|
ADDQ $16, itr2
|
|
chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $4, BB1, BB1, BB1
|
|
VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $12, DD1, DD1, DD1
|
|
chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $12, BB1, BB1, BB1
|
|
VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $4, DD1, DD1, DD1
|
|
CMPQ itr2, itr1
|
|
JB openAVX2Tail128LoopA
|
|
CMPQ itr2, $160
|
|
JNE openAVX2Tail128LoopB
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA1, AA1
|
|
VPADDD state1StoreAVX2, BB1, BB1
|
|
VPADDD state2StoreAVX2, CC1, CC1
|
|
VPADDD DD0, DD1, DD1
|
|
VPERM2I128 $0x02, AA1, BB1, AA0; VPERM2I128 $0x02, CC1, DD1, BB0; VPERM2I128 $0x13, AA1, BB1, CC0; VPERM2I128 $0x13, CC1, DD1, DD0
|
|
|
|
openAVX2TailLoop:
|
|
CMPQ inl, $32
|
|
JB openAVX2Tail
|
|
SUBQ $32, inl
|
|
|
|
// Load for decryption
|
|
VPXOR (inp), AA0, AA0
|
|
VMOVDQU AA0, (oup)
|
|
LEAQ (1*32)(inp), inp
|
|
LEAQ (1*32)(oup), oup
|
|
VMOVDQA BB0, AA0
|
|
VMOVDQA CC0, BB0
|
|
VMOVDQA DD0, CC0
|
|
JMP openAVX2TailLoop
|
|
|
|
openAVX2Tail:
|
|
CMPQ inl, $16
|
|
VMOVDQA A0, A1
|
|
JB openAVX2TailDone
|
|
SUBQ $16, inl
|
|
|
|
// Load for decryption
|
|
VPXOR (inp), A0, T0
|
|
VMOVDQU T0, (oup)
|
|
LEAQ (1*16)(inp), inp
|
|
LEAQ (1*16)(oup), oup
|
|
VPERM2I128 $0x11, AA0, AA0, AA0
|
|
VMOVDQA A0, A1
|
|
|
|
openAVX2TailDone:
|
|
VZEROUPPER
|
|
JMP openSSETail16
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 256 bytes of ciphertext
|
|
openAVX2Tail256:
|
|
// Need to decrypt up to 256 bytes - prepare four blocks
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VMOVDQA DD0, TT1
|
|
VMOVDQA DD1, TT2
|
|
|
|
// Compute the number of iterations that will hash data
|
|
MOVQ inl, tmpStoreAVX2
|
|
MOVQ inl, itr1
|
|
SUBQ $128, itr1
|
|
SHRQ $4, itr1
|
|
MOVQ $10, itr2
|
|
CMPQ itr1, $10
|
|
CMOVQGT itr2, itr1
|
|
MOVQ inp, inl
|
|
XORQ itr2, itr2
|
|
|
|
openAVX2Tail256LoopA:
|
|
polyAdd(0(inl))
|
|
polyMulAVX2
|
|
LEAQ 16(inl), inl
|
|
|
|
// Perform ChaCha rounds, while hashing the remaining input
|
|
openAVX2Tail256LoopB:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1
|
|
INCQ itr2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1
|
|
CMPQ itr2, itr1
|
|
JB openAVX2Tail256LoopA
|
|
|
|
CMPQ itr2, $10
|
|
JNE openAVX2Tail256LoopB
|
|
|
|
MOVQ inl, itr2
|
|
SUBQ inp, inl
|
|
MOVQ inl, itr1
|
|
MOVQ tmpStoreAVX2, inl
|
|
|
|
// Hash the remainder of data (if any)
|
|
openAVX2Tail256Hash:
|
|
ADDQ $16, itr1
|
|
CMPQ itr1, inl
|
|
JGT openAVX2Tail256HashEnd
|
|
polyAdd (0(itr2))
|
|
polyMulAVX2
|
|
LEAQ 16(itr2), itr2
|
|
JMP openAVX2Tail256Hash
|
|
|
|
// Store 128 bytes safely, then go to store loop
|
|
openAVX2Tail256HashEnd:
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1
|
|
VPADDD TT1, DD0, DD0; VPADDD TT2, DD1, DD1
|
|
VPERM2I128 $0x02, AA0, BB0, AA2; VPERM2I128 $0x02, CC0, DD0, BB2; VPERM2I128 $0x13, AA0, BB0, CC2; VPERM2I128 $0x13, CC0, DD0, DD2
|
|
VPERM2I128 $0x02, AA1, BB1, AA0; VPERM2I128 $0x02, CC1, DD1, BB0; VPERM2I128 $0x13, AA1, BB1, CC0; VPERM2I128 $0x13, CC1, DD1, DD0
|
|
|
|
VPXOR (0*32)(inp), AA2, AA2; VPXOR (1*32)(inp), BB2, BB2; VPXOR (2*32)(inp), CC2, CC2; VPXOR (3*32)(inp), DD2, DD2
|
|
VMOVDQU AA2, (0*32)(oup); VMOVDQU BB2, (1*32)(oup); VMOVDQU CC2, (2*32)(oup); VMOVDQU DD2, (3*32)(oup)
|
|
LEAQ (4*32)(inp), inp
|
|
LEAQ (4*32)(oup), oup
|
|
SUBQ $4*32, inl
|
|
|
|
JMP openAVX2TailLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 384 bytes of ciphertext
|
|
openAVX2Tail384:
|
|
// Need to decrypt up to 384 bytes - prepare six blocks
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VPADDD ·avx2IncMask<>(SB), DD1, DD2
|
|
VMOVDQA DD0, ctr0StoreAVX2
|
|
VMOVDQA DD1, ctr1StoreAVX2
|
|
VMOVDQA DD2, ctr2StoreAVX2
|
|
|
|
// Compute the number of iterations that will hash two blocks of data
|
|
MOVQ inl, tmpStoreAVX2
|
|
MOVQ inl, itr1
|
|
SUBQ $256, itr1
|
|
SHRQ $4, itr1
|
|
ADDQ $6, itr1
|
|
MOVQ $10, itr2
|
|
CMPQ itr1, $10
|
|
CMOVQGT itr2, itr1
|
|
MOVQ inp, inl
|
|
XORQ itr2, itr2
|
|
|
|
// Perform ChaCha rounds, while hashing the remaining input
|
|
openAVX2Tail384LoopB:
|
|
polyAdd(0(inl))
|
|
polyMulAVX2
|
|
LEAQ 16(inl), inl
|
|
|
|
openAVX2Tail384LoopA:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2
|
|
polyAdd(0(inl))
|
|
polyMulAVX2
|
|
LEAQ 16(inl), inl
|
|
INCQ itr2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2
|
|
|
|
CMPQ itr2, itr1
|
|
JB openAVX2Tail384LoopB
|
|
|
|
CMPQ itr2, $10
|
|
JNE openAVX2Tail384LoopA
|
|
|
|
MOVQ inl, itr2
|
|
SUBQ inp, inl
|
|
MOVQ inl, itr1
|
|
MOVQ tmpStoreAVX2, inl
|
|
|
|
openAVX2Tail384Hash:
|
|
ADDQ $16, itr1
|
|
CMPQ itr1, inl
|
|
JGT openAVX2Tail384HashEnd
|
|
polyAdd(0(itr2))
|
|
polyMulAVX2
|
|
LEAQ 16(itr2), itr2
|
|
JMP openAVX2Tail384Hash
|
|
|
|
// Store 256 bytes safely, then go to store loop
|
|
openAVX2Tail384HashEnd:
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2
|
|
VPADDD ctr0StoreAVX2, DD0, DD0; VPADDD ctr1StoreAVX2, DD1, DD1; VPADDD ctr2StoreAVX2, DD2, DD2
|
|
VPERM2I128 $0x02, AA0, BB0, TT0; VPERM2I128 $0x02, CC0, DD0, TT1; VPERM2I128 $0x13, AA0, BB0, TT2; VPERM2I128 $0x13, CC0, DD0, TT3
|
|
VPXOR (0*32)(inp), TT0, TT0; VPXOR (1*32)(inp), TT1, TT1; VPXOR (2*32)(inp), TT2, TT2; VPXOR (3*32)(inp), TT3, TT3
|
|
VMOVDQU TT0, (0*32)(oup); VMOVDQU TT1, (1*32)(oup); VMOVDQU TT2, (2*32)(oup); VMOVDQU TT3, (3*32)(oup)
|
|
VPERM2I128 $0x02, AA1, BB1, TT0; VPERM2I128 $0x02, CC1, DD1, TT1; VPERM2I128 $0x13, AA1, BB1, TT2; VPERM2I128 $0x13, CC1, DD1, TT3
|
|
VPXOR (4*32)(inp), TT0, TT0; VPXOR (5*32)(inp), TT1, TT1; VPXOR (6*32)(inp), TT2, TT2; VPXOR (7*32)(inp), TT3, TT3
|
|
VMOVDQU TT0, (4*32)(oup); VMOVDQU TT1, (5*32)(oup); VMOVDQU TT2, (6*32)(oup); VMOVDQU TT3, (7*32)(oup)
|
|
VPERM2I128 $0x02, AA2, BB2, AA0; VPERM2I128 $0x02, CC2, DD2, BB0; VPERM2I128 $0x13, AA2, BB2, CC0; VPERM2I128 $0x13, CC2, DD2, DD0
|
|
LEAQ (8*32)(inp), inp
|
|
LEAQ (8*32)(oup), oup
|
|
SUBQ $8*32, inl
|
|
JMP openAVX2TailLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 512 bytes of ciphertext
|
|
openAVX2Tail512:
|
|
VMOVDQU ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2; VMOVDQA AA0, AA3
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2; VMOVDQA BB0, BB3
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2; VMOVDQA CC0, CC3
|
|
VMOVDQA ctr3StoreAVX2, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD1; VPADDD ·avx2IncMask<>(SB), DD1, DD2; VPADDD ·avx2IncMask<>(SB), DD2, DD3
|
|
VMOVDQA DD0, ctr0StoreAVX2; VMOVDQA DD1, ctr1StoreAVX2; VMOVDQA DD2, ctr2StoreAVX2; VMOVDQA DD3, ctr3StoreAVX2
|
|
XORQ itr1, itr1
|
|
MOVQ inp, itr2
|
|
|
|
openAVX2Tail512LoopB:
|
|
polyAdd(0(itr2))
|
|
polyMulAVX2
|
|
LEAQ (2*8)(itr2), itr2
|
|
|
|
openAVX2Tail512LoopA:
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyAdd(0*8(itr2))
|
|
polyMulAVX2
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2; VPALIGNR $4, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2; VPALIGNR $12, DD3, DD3, DD3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
polyAdd(2*8(itr2))
|
|
polyMulAVX2
|
|
LEAQ (4*8)(itr2), itr2
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2; VPALIGNR $12, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2; VPALIGNR $4, DD3, DD3, DD3
|
|
INCQ itr1
|
|
CMPQ itr1, $4
|
|
JLT openAVX2Tail512LoopB
|
|
|
|
CMPQ itr1, $10
|
|
JNE openAVX2Tail512LoopA
|
|
|
|
MOVQ inl, itr1
|
|
SUBQ $384, itr1
|
|
ANDQ $-16, itr1
|
|
|
|
openAVX2Tail512HashLoop:
|
|
TESTQ itr1, itr1
|
|
JE openAVX2Tail512HashEnd
|
|
polyAdd(0(itr2))
|
|
polyMulAVX2
|
|
LEAQ 16(itr2), itr2
|
|
SUBQ $16, itr1
|
|
JMP openAVX2Tail512HashLoop
|
|
|
|
openAVX2Tail512HashEnd:
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2; VPADDD ·chacha20Constants<>(SB), AA3, AA3
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2; VPADDD state1StoreAVX2, BB3, BB3
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2; VPADDD state2StoreAVX2, CC3, CC3
|
|
VPADDD ctr0StoreAVX2, DD0, DD0; VPADDD ctr1StoreAVX2, DD1, DD1; VPADDD ctr2StoreAVX2, DD2, DD2; VPADDD ctr3StoreAVX2, DD3, DD3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPERM2I128 $0x02, AA0, BB0, CC3; VPERM2I128 $0x13, AA0, BB0, BB0; VPERM2I128 $0x02, CC0, DD0, AA0; VPERM2I128 $0x13, CC0, DD0, CC0
|
|
VPXOR (0*32)(inp), CC3, CC3; VPXOR (1*32)(inp), AA0, AA0; VPXOR (2*32)(inp), BB0, BB0; VPXOR (3*32)(inp), CC0, CC0
|
|
VMOVDQU CC3, (0*32)(oup); VMOVDQU AA0, (1*32)(oup); VMOVDQU BB0, (2*32)(oup); VMOVDQU CC0, (3*32)(oup)
|
|
VPERM2I128 $0x02, AA1, BB1, AA0; VPERM2I128 $0x02, CC1, DD1, BB0; VPERM2I128 $0x13, AA1, BB1, CC0; VPERM2I128 $0x13, CC1, DD1, DD0
|
|
VPXOR (4*32)(inp), AA0, AA0; VPXOR (5*32)(inp), BB0, BB0; VPXOR (6*32)(inp), CC0, CC0; VPXOR (7*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (4*32)(oup); VMOVDQU BB0, (5*32)(oup); VMOVDQU CC0, (6*32)(oup); VMOVDQU DD0, (7*32)(oup)
|
|
VPERM2I128 $0x02, AA2, BB2, AA0; VPERM2I128 $0x02, CC2, DD2, BB0; VPERM2I128 $0x13, AA2, BB2, CC0; VPERM2I128 $0x13, CC2, DD2, DD0
|
|
VPXOR (8*32)(inp), AA0, AA0; VPXOR (9*32)(inp), BB0, BB0; VPXOR (10*32)(inp), CC0, CC0; VPXOR (11*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (8*32)(oup); VMOVDQU BB0, (9*32)(oup); VMOVDQU CC0, (10*32)(oup); VMOVDQU DD0, (11*32)(oup)
|
|
VPERM2I128 $0x02, AA3, BB3, AA0; VPERM2I128 $0x02, tmpStoreAVX2, DD3, BB0; VPERM2I128 $0x13, AA3, BB3, CC0; VPERM2I128 $0x13, tmpStoreAVX2, DD3, DD0
|
|
|
|
LEAQ (12*32)(inp), inp
|
|
LEAQ (12*32)(oup), oup
|
|
SUBQ $12*32, inl
|
|
|
|
JMP openAVX2TailLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ----------------------------------------------------------------------------
|
|
// func chacha20Poly1305Seal(dst, key, src, ad []byte)
|
|
TEXT ·chacha20Poly1305Seal(SB), 0, $288-96
|
|
// For aligned stack access
|
|
MOVQ SP, BP
|
|
ADDQ $32, BP
|
|
ANDQ $-32, BP
|
|
MOVQ dst+0(FP), oup
|
|
MOVQ key+24(FP), keyp
|
|
MOVQ src+48(FP), inp
|
|
MOVQ src_len+56(FP), inl
|
|
MOVQ ad+72(FP), adp
|
|
|
|
CMPB ·useAVX2(SB), $1
|
|
JE chacha20Poly1305Seal_AVX2
|
|
|
|
// Special optimization, for very short buffers
|
|
CMPQ inl, $128
|
|
JBE sealSSE128 // About 15% faster
|
|
|
|
// In the seal case - prepare the poly key + 3 blocks of stream in the first iteration
|
|
MOVOU ·chacha20Constants<>(SB), A0
|
|
MOVOU (1*16)(keyp), B0
|
|
MOVOU (2*16)(keyp), C0
|
|
MOVOU (3*16)(keyp), D0
|
|
|
|
// Store state on stack for future use
|
|
MOVO B0, state1Store
|
|
MOVO C0, state2Store
|
|
|
|
// Load state, increment counter blocks
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1
|
|
MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2
|
|
MOVO A2, A3; MOVO B2, B3; MOVO C2, C3; MOVO D2, D3; PADDL ·sseIncMask<>(SB), D3
|
|
|
|
// Store counters
|
|
MOVO D0, ctr0Store; MOVO D1, ctr1Store; MOVO D2, ctr2Store; MOVO D3, ctr3Store
|
|
MOVQ $10, itr2
|
|
|
|
sealSSEIntroLoop:
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
shiftB0Left; shiftB1Left; shiftB2Left; shiftB3Left
|
|
shiftC0Left; shiftC1Left; shiftC2Left; shiftC3Left
|
|
shiftD0Left; shiftD1Left; shiftD2Left; shiftD3Left
|
|
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
shiftB0Right; shiftB1Right; shiftB2Right; shiftB3Right
|
|
shiftC0Right; shiftC1Right; shiftC2Right; shiftC3Right
|
|
shiftD0Right; shiftD1Right; shiftD2Right; shiftD3Right
|
|
DECQ itr2
|
|
JNE sealSSEIntroLoop
|
|
|
|
// Add in the state
|
|
PADDD ·chacha20Constants<>(SB), A0; PADDD ·chacha20Constants<>(SB), A1; PADDD ·chacha20Constants<>(SB), A2; PADDD ·chacha20Constants<>(SB), A3
|
|
PADDD state1Store, B0; PADDD state1Store, B1; PADDD state1Store, B2; PADDD state1Store, B3
|
|
PADDD state2Store, C1; PADDD state2Store, C2; PADDD state2Store, C3
|
|
PADDD ctr1Store, D1; PADDD ctr2Store, D2; PADDD ctr3Store, D3
|
|
|
|
// Clamp and store the key
|
|
PAND ·polyClampMask<>(SB), A0
|
|
MOVO A0, rStore
|
|
MOVO B0, sStore
|
|
|
|
// Hash AAD
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
|
|
MOVOU (0*16)(inp), A0; MOVOU (1*16)(inp), B0; MOVOU (2*16)(inp), C0; MOVOU (3*16)(inp), D0
|
|
PXOR A0, A1; PXOR B0, B1; PXOR C0, C1; PXOR D0, D1
|
|
MOVOU A1, (0*16)(oup); MOVOU B1, (1*16)(oup); MOVOU C1, (2*16)(oup); MOVOU D1, (3*16)(oup)
|
|
MOVOU (4*16)(inp), A0; MOVOU (5*16)(inp), B0; MOVOU (6*16)(inp), C0; MOVOU (7*16)(inp), D0
|
|
PXOR A0, A2; PXOR B0, B2; PXOR C0, C2; PXOR D0, D2
|
|
MOVOU A2, (4*16)(oup); MOVOU B2, (5*16)(oup); MOVOU C2, (6*16)(oup); MOVOU D2, (7*16)(oup)
|
|
|
|
MOVQ $128, itr1
|
|
SUBQ $128, inl
|
|
LEAQ 128(inp), inp
|
|
|
|
MOVO A3, A1; MOVO B3, B1; MOVO C3, C1; MOVO D3, D1
|
|
|
|
CMPQ inl, $64
|
|
JBE sealSSE128SealHash
|
|
|
|
MOVOU (0*16)(inp), A0; MOVOU (1*16)(inp), B0; MOVOU (2*16)(inp), C0; MOVOU (3*16)(inp), D0
|
|
PXOR A0, A3; PXOR B0, B3; PXOR C0, C3; PXOR D0, D3
|
|
MOVOU A3, (8*16)(oup); MOVOU B3, (9*16)(oup); MOVOU C3, (10*16)(oup); MOVOU D3, (11*16)(oup)
|
|
|
|
ADDQ $64, itr1
|
|
SUBQ $64, inl
|
|
LEAQ 64(inp), inp
|
|
|
|
MOVQ $2, itr1
|
|
MOVQ $8, itr2
|
|
|
|
CMPQ inl, $64
|
|
JBE sealSSETail64
|
|
CMPQ inl, $128
|
|
JBE sealSSETail128
|
|
CMPQ inl, $192
|
|
JBE sealSSETail192
|
|
|
|
sealSSEMainLoop:
|
|
// Load state, increment counter blocks
|
|
MOVO ·chacha20Constants<>(SB), A0; MOVO state1Store, B0; MOVO state2Store, C0; MOVO ctr3Store, D0; PADDL ·sseIncMask<>(SB), D0
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1
|
|
MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2
|
|
MOVO A2, A3; MOVO B2, B3; MOVO C2, C3; MOVO D2, D3; PADDL ·sseIncMask<>(SB), D3
|
|
|
|
// Store counters
|
|
MOVO D0, ctr0Store; MOVO D1, ctr1Store; MOVO D2, ctr2Store; MOVO D3, ctr3Store
|
|
|
|
sealSSEInnerLoop:
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
polyAdd(0(oup))
|
|
shiftB0Left; shiftB1Left; shiftB2Left; shiftB3Left
|
|
shiftC0Left; shiftC1Left; shiftC2Left; shiftC3Left
|
|
shiftD0Left; shiftD1Left; shiftD2Left; shiftD3Left
|
|
polyMulStage1
|
|
polyMulStage2
|
|
LEAQ (2*8)(oup), oup
|
|
MOVO C3, tmpStore
|
|
chachaQR(A0, B0, C0, D0, C3); chachaQR(A1, B1, C1, D1, C3); chachaQR(A2, B2, C2, D2, C3)
|
|
MOVO tmpStore, C3
|
|
MOVO C1, tmpStore
|
|
polyMulStage3
|
|
chachaQR(A3, B3, C3, D3, C1)
|
|
MOVO tmpStore, C1
|
|
polyMulReduceStage
|
|
shiftB0Right; shiftB1Right; shiftB2Right; shiftB3Right
|
|
shiftC0Right; shiftC1Right; shiftC2Right; shiftC3Right
|
|
shiftD0Right; shiftD1Right; shiftD2Right; shiftD3Right
|
|
DECQ itr2
|
|
JGE sealSSEInnerLoop
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ (2*8)(oup), oup
|
|
DECQ itr1
|
|
JG sealSSEInnerLoop
|
|
|
|
// Add in the state
|
|
PADDD ·chacha20Constants<>(SB), A0; PADDD ·chacha20Constants<>(SB), A1; PADDD ·chacha20Constants<>(SB), A2; PADDD ·chacha20Constants<>(SB), A3
|
|
PADDD state1Store, B0; PADDD state1Store, B1; PADDD state1Store, B2; PADDD state1Store, B3
|
|
PADDD state2Store, C0; PADDD state2Store, C1; PADDD state2Store, C2; PADDD state2Store, C3
|
|
PADDD ctr0Store, D0; PADDD ctr1Store, D1; PADDD ctr2Store, D2; PADDD ctr3Store, D3
|
|
MOVO D3, tmpStore
|
|
|
|
// Load - xor - store
|
|
MOVOU (0*16)(inp), D3; PXOR D3, A0
|
|
MOVOU (1*16)(inp), D3; PXOR D3, B0
|
|
MOVOU (2*16)(inp), D3; PXOR D3, C0
|
|
MOVOU (3*16)(inp), D3; PXOR D3, D0
|
|
MOVOU A0, (0*16)(oup)
|
|
MOVOU B0, (1*16)(oup)
|
|
MOVOU C0, (2*16)(oup)
|
|
MOVOU D0, (3*16)(oup)
|
|
MOVO tmpStore, D3
|
|
|
|
MOVOU (4*16)(inp), A0; MOVOU (5*16)(inp), B0; MOVOU (6*16)(inp), C0; MOVOU (7*16)(inp), D0
|
|
PXOR A0, A1; PXOR B0, B1; PXOR C0, C1; PXOR D0, D1
|
|
MOVOU A1, (4*16)(oup); MOVOU B1, (5*16)(oup); MOVOU C1, (6*16)(oup); MOVOU D1, (7*16)(oup)
|
|
MOVOU (8*16)(inp), A0; MOVOU (9*16)(inp), B0; MOVOU (10*16)(inp), C0; MOVOU (11*16)(inp), D0
|
|
PXOR A0, A2; PXOR B0, B2; PXOR C0, C2; PXOR D0, D2
|
|
MOVOU A2, (8*16)(oup); MOVOU B2, (9*16)(oup); MOVOU C2, (10*16)(oup); MOVOU D2, (11*16)(oup)
|
|
ADDQ $192, inp
|
|
MOVQ $192, itr1
|
|
SUBQ $192, inl
|
|
MOVO A3, A1
|
|
MOVO B3, B1
|
|
MOVO C3, C1
|
|
MOVO D3, D1
|
|
CMPQ inl, $64
|
|
JBE sealSSE128SealHash
|
|
MOVOU (0*16)(inp), A0; MOVOU (1*16)(inp), B0; MOVOU (2*16)(inp), C0; MOVOU (3*16)(inp), D0
|
|
PXOR A0, A3; PXOR B0, B3; PXOR C0, C3; PXOR D0, D3
|
|
MOVOU A3, (12*16)(oup); MOVOU B3, (13*16)(oup); MOVOU C3, (14*16)(oup); MOVOU D3, (15*16)(oup)
|
|
LEAQ 64(inp), inp
|
|
SUBQ $64, inl
|
|
MOVQ $6, itr1
|
|
MOVQ $4, itr2
|
|
CMPQ inl, $192
|
|
JG sealSSEMainLoop
|
|
|
|
MOVQ inl, itr1
|
|
TESTQ inl, inl
|
|
JE sealSSE128SealHash
|
|
MOVQ $6, itr1
|
|
CMPQ inl, $64
|
|
JBE sealSSETail64
|
|
CMPQ inl, $128
|
|
JBE sealSSETail128
|
|
JMP sealSSETail192
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 64 bytes of plaintext
|
|
sealSSETail64:
|
|
// Need to encrypt up to 64 bytes - prepare single block, hash 192 or 256 bytes
|
|
MOVO ·chacha20Constants<>(SB), A1
|
|
MOVO state1Store, B1
|
|
MOVO state2Store, C1
|
|
MOVO ctr3Store, D1
|
|
PADDL ·sseIncMask<>(SB), D1
|
|
MOVO D1, ctr0Store
|
|
|
|
sealSSETail64LoopA:
|
|
// Perform ChaCha rounds, while hashing the previously encrypted ciphertext
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealSSETail64LoopB:
|
|
chachaQR(A1, B1, C1, D1, T1)
|
|
shiftB1Left; shiftC1Left; shiftD1Left
|
|
chachaQR(A1, B1, C1, D1, T1)
|
|
shiftB1Right; shiftC1Right; shiftD1Right
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
DECQ itr1
|
|
JG sealSSETail64LoopA
|
|
|
|
DECQ itr2
|
|
JGE sealSSETail64LoopB
|
|
PADDL ·chacha20Constants<>(SB), A1
|
|
PADDL state1Store, B1
|
|
PADDL state2Store, C1
|
|
PADDL ctr0Store, D1
|
|
|
|
JMP sealSSE128Seal
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 128 bytes of plaintext
|
|
sealSSETail128:
|
|
// Need to encrypt up to 128 bytes - prepare two blocks, hash 192 or 256 bytes
|
|
MOVO ·chacha20Constants<>(SB), A0; MOVO state1Store, B0; MOVO state2Store, C0; MOVO ctr3Store, D0; PADDL ·sseIncMask<>(SB), D0; MOVO D0, ctr0Store
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1; MOVO D1, ctr1Store
|
|
|
|
sealSSETail128LoopA:
|
|
// Perform ChaCha rounds, while hashing the previously encrypted ciphertext
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealSSETail128LoopB:
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0)
|
|
shiftB0Left; shiftC0Left; shiftD0Left
|
|
shiftB1Left; shiftC1Left; shiftD1Left
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0)
|
|
shiftB0Right; shiftC0Right; shiftD0Right
|
|
shiftB1Right; shiftC1Right; shiftD1Right
|
|
|
|
DECQ itr1
|
|
JG sealSSETail128LoopA
|
|
|
|
DECQ itr2
|
|
JGE sealSSETail128LoopB
|
|
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL ·chacha20Constants<>(SB), A1
|
|
PADDL state1Store, B0; PADDL state1Store, B1
|
|
PADDL state2Store, C0; PADDL state2Store, C1
|
|
PADDL ctr0Store, D0; PADDL ctr1Store, D1
|
|
|
|
MOVOU (0*16)(inp), T0; MOVOU (1*16)(inp), T1; MOVOU (2*16)(inp), T2; MOVOU (3*16)(inp), T3
|
|
PXOR T0, A0; PXOR T1, B0; PXOR T2, C0; PXOR T3, D0
|
|
MOVOU A0, (0*16)(oup); MOVOU B0, (1*16)(oup); MOVOU C0, (2*16)(oup); MOVOU D0, (3*16)(oup)
|
|
|
|
MOVQ $64, itr1
|
|
LEAQ 64(inp), inp
|
|
SUBQ $64, inl
|
|
|
|
JMP sealSSE128SealHash
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 192 bytes of plaintext
|
|
sealSSETail192:
|
|
// Need to encrypt up to 192 bytes - prepare three blocks, hash 192 or 256 bytes
|
|
MOVO ·chacha20Constants<>(SB), A0; MOVO state1Store, B0; MOVO state2Store, C0; MOVO ctr3Store, D0; PADDL ·sseIncMask<>(SB), D0; MOVO D0, ctr0Store
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1; MOVO D1, ctr1Store
|
|
MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2; MOVO D2, ctr2Store
|
|
|
|
sealSSETail192LoopA:
|
|
// Perform ChaCha rounds, while hashing the previously encrypted ciphertext
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealSSETail192LoopB:
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Left; shiftC0Left; shiftD0Left
|
|
shiftB1Left; shiftC1Left; shiftD1Left
|
|
shiftB2Left; shiftC2Left; shiftD2Left
|
|
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Right; shiftC0Right; shiftD0Right
|
|
shiftB1Right; shiftC1Right; shiftD1Right
|
|
shiftB2Right; shiftC2Right; shiftD2Right
|
|
|
|
DECQ itr1
|
|
JG sealSSETail192LoopA
|
|
|
|
DECQ itr2
|
|
JGE sealSSETail192LoopB
|
|
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL ·chacha20Constants<>(SB), A1; PADDL ·chacha20Constants<>(SB), A2
|
|
PADDL state1Store, B0; PADDL state1Store, B1; PADDL state1Store, B2
|
|
PADDL state2Store, C0; PADDL state2Store, C1; PADDL state2Store, C2
|
|
PADDL ctr0Store, D0; PADDL ctr1Store, D1; PADDL ctr2Store, D2
|
|
|
|
MOVOU (0*16)(inp), T0; MOVOU (1*16)(inp), T1; MOVOU (2*16)(inp), T2; MOVOU (3*16)(inp), T3
|
|
PXOR T0, A0; PXOR T1, B0; PXOR T2, C0; PXOR T3, D0
|
|
MOVOU A0, (0*16)(oup); MOVOU B0, (1*16)(oup); MOVOU C0, (2*16)(oup); MOVOU D0, (3*16)(oup)
|
|
MOVOU (4*16)(inp), T0; MOVOU (5*16)(inp), T1; MOVOU (6*16)(inp), T2; MOVOU (7*16)(inp), T3
|
|
PXOR T0, A1; PXOR T1, B1; PXOR T2, C1; PXOR T3, D1
|
|
MOVOU A1, (4*16)(oup); MOVOU B1, (5*16)(oup); MOVOU C1, (6*16)(oup); MOVOU D1, (7*16)(oup)
|
|
|
|
MOVO A2, A1
|
|
MOVO B2, B1
|
|
MOVO C2, C1
|
|
MOVO D2, D1
|
|
MOVQ $128, itr1
|
|
LEAQ 128(inp), inp
|
|
SUBQ $128, inl
|
|
|
|
JMP sealSSE128SealHash
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special seal optimization for buffers smaller than 129 bytes
|
|
sealSSE128:
|
|
// For up to 128 bytes of ciphertext and 64 bytes for the poly key, we require to process three blocks
|
|
MOVOU ·chacha20Constants<>(SB), A0; MOVOU (1*16)(keyp), B0; MOVOU (2*16)(keyp), C0; MOVOU (3*16)(keyp), D0
|
|
MOVO A0, A1; MOVO B0, B1; MOVO C0, C1; MOVO D0, D1; PADDL ·sseIncMask<>(SB), D1
|
|
MOVO A1, A2; MOVO B1, B2; MOVO C1, C2; MOVO D1, D2; PADDL ·sseIncMask<>(SB), D2
|
|
MOVO B0, T1; MOVO C0, T2; MOVO D1, T3
|
|
MOVQ $10, itr2
|
|
|
|
sealSSE128InnerCipherLoop:
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Left; shiftB1Left; shiftB2Left
|
|
shiftC0Left; shiftC1Left; shiftC2Left
|
|
shiftD0Left; shiftD1Left; shiftD2Left
|
|
chachaQR(A0, B0, C0, D0, T0); chachaQR(A1, B1, C1, D1, T0); chachaQR(A2, B2, C2, D2, T0)
|
|
shiftB0Right; shiftB1Right; shiftB2Right
|
|
shiftC0Right; shiftC1Right; shiftC2Right
|
|
shiftD0Right; shiftD1Right; shiftD2Right
|
|
DECQ itr2
|
|
JNE sealSSE128InnerCipherLoop
|
|
|
|
// A0|B0 hold the Poly1305 32-byte key, C0,D0 can be discarded
|
|
PADDL ·chacha20Constants<>(SB), A0; PADDL ·chacha20Constants<>(SB), A1; PADDL ·chacha20Constants<>(SB), A2
|
|
PADDL T1, B0; PADDL T1, B1; PADDL T1, B2
|
|
PADDL T2, C1; PADDL T2, C2
|
|
PADDL T3, D1; PADDL ·sseIncMask<>(SB), T3; PADDL T3, D2
|
|
PAND ·polyClampMask<>(SB), A0
|
|
MOVOU A0, rStore
|
|
MOVOU B0, sStore
|
|
|
|
// Hash
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
XORQ itr1, itr1
|
|
|
|
sealSSE128SealHash:
|
|
// itr1 holds the number of bytes encrypted but not yet hashed
|
|
CMPQ itr1, $16
|
|
JB sealSSE128Seal
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
|
|
SUBQ $16, itr1
|
|
ADDQ $16, oup
|
|
|
|
JMP sealSSE128SealHash
|
|
|
|
sealSSE128Seal:
|
|
CMPQ inl, $16
|
|
JB sealSSETail
|
|
SUBQ $16, inl
|
|
|
|
// Load for decryption
|
|
MOVOU (inp), T0
|
|
PXOR T0, A1
|
|
MOVOU A1, (oup)
|
|
LEAQ (1*16)(inp), inp
|
|
LEAQ (1*16)(oup), oup
|
|
|
|
// Extract for hashing
|
|
MOVQ A1, t0
|
|
PSRLDQ $8, A1
|
|
MOVQ A1, t1
|
|
ADDQ t0, acc0; ADCQ t1, acc1; ADCQ $1, acc2
|
|
polyMul
|
|
|
|
// Shift the stream "left"
|
|
MOVO B1, A1
|
|
MOVO C1, B1
|
|
MOVO D1, C1
|
|
MOVO A2, D1
|
|
MOVO B2, A2
|
|
MOVO C2, B2
|
|
MOVO D2, C2
|
|
JMP sealSSE128Seal
|
|
|
|
sealSSETail:
|
|
TESTQ inl, inl
|
|
JE sealSSEFinalize
|
|
|
|
// We can only load the PT one byte at a time to avoid read after end of buffer
|
|
MOVQ inl, itr2
|
|
SHLQ $4, itr2
|
|
LEAQ ·andMask<>(SB), t0
|
|
MOVQ inl, itr1
|
|
LEAQ -1(inp)(inl*1), inp
|
|
XORQ t2, t2
|
|
XORQ t3, t3
|
|
XORQ AX, AX
|
|
|
|
sealSSETailLoadLoop:
|
|
SHLQ $8, t2, t3
|
|
SHLQ $8, t2
|
|
MOVB (inp), AX
|
|
XORQ AX, t2
|
|
LEAQ -1(inp), inp
|
|
DECQ itr1
|
|
JNE sealSSETailLoadLoop
|
|
MOVQ t2, 0+tmpStore
|
|
MOVQ t3, 8+tmpStore
|
|
PXOR 0+tmpStore, A1
|
|
MOVOU A1, (oup)
|
|
MOVOU -16(t0)(itr2*1), T0
|
|
PAND T0, A1
|
|
MOVQ A1, t0
|
|
PSRLDQ $8, A1
|
|
MOVQ A1, t1
|
|
ADDQ t0, acc0; ADCQ t1, acc1; ADCQ $1, acc2
|
|
polyMul
|
|
|
|
ADDQ inl, oup
|
|
|
|
sealSSEFinalize:
|
|
// Hash in the buffer lengths
|
|
ADDQ ad_len+80(FP), acc0
|
|
ADCQ src_len+56(FP), acc1
|
|
ADCQ $1, acc2
|
|
polyMul
|
|
|
|
// Final reduce
|
|
MOVQ acc0, t0
|
|
MOVQ acc1, t1
|
|
MOVQ acc2, t2
|
|
SUBQ $-5, acc0
|
|
SBBQ $-1, acc1
|
|
SBBQ $3, acc2
|
|
CMOVQCS t0, acc0
|
|
CMOVQCS t1, acc1
|
|
CMOVQCS t2, acc2
|
|
|
|
// Add in the "s" part of the key
|
|
ADDQ 0+sStore, acc0
|
|
ADCQ 8+sStore, acc1
|
|
|
|
// Finally store the tag at the end of the message
|
|
MOVQ acc0, (0*8)(oup)
|
|
MOVQ acc1, (1*8)(oup)
|
|
RET
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ------------------------- AVX2 Code ----------------------------------------
|
|
chacha20Poly1305Seal_AVX2:
|
|
VZEROUPPER
|
|
VMOVDQU ·chacha20Constants<>(SB), AA0
|
|
BYTE $0xc4; BYTE $0x42; BYTE $0x7d; BYTE $0x5a; BYTE $0x70; BYTE $0x10 // broadcasti128 16(r8), ymm14
|
|
BYTE $0xc4; BYTE $0x42; BYTE $0x7d; BYTE $0x5a; BYTE $0x60; BYTE $0x20 // broadcasti128 32(r8), ymm12
|
|
BYTE $0xc4; BYTE $0xc2; BYTE $0x7d; BYTE $0x5a; BYTE $0x60; BYTE $0x30 // broadcasti128 48(r8), ymm4
|
|
VPADDD ·avx2InitMask<>(SB), DD0, DD0
|
|
|
|
// Special optimizations, for very short buffers
|
|
CMPQ inl, $192
|
|
JBE seal192AVX2 // 33% faster
|
|
CMPQ inl, $320
|
|
JBE seal320AVX2 // 17% faster
|
|
|
|
// For the general key prepare the key first - as a byproduct we have 64 bytes of cipher stream
|
|
VMOVDQA AA0, AA1; VMOVDQA AA0, AA2; VMOVDQA AA0, AA3
|
|
VMOVDQA BB0, BB1; VMOVDQA BB0, BB2; VMOVDQA BB0, BB3; VMOVDQA BB0, state1StoreAVX2
|
|
VMOVDQA CC0, CC1; VMOVDQA CC0, CC2; VMOVDQA CC0, CC3; VMOVDQA CC0, state2StoreAVX2
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD1; VMOVDQA DD0, ctr0StoreAVX2
|
|
VPADDD ·avx2IncMask<>(SB), DD1, DD2; VMOVDQA DD1, ctr1StoreAVX2
|
|
VPADDD ·avx2IncMask<>(SB), DD2, DD3; VMOVDQA DD2, ctr2StoreAVX2
|
|
VMOVDQA DD3, ctr3StoreAVX2
|
|
MOVQ $10, itr2
|
|
|
|
sealAVX2IntroLoop:
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, CC3); chachaQR_AVX2(AA1, BB1, CC1, DD1, CC3); chachaQR_AVX2(AA2, BB2, CC2, DD2, CC3)
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VMOVDQA CC1, tmpStoreAVX2
|
|
chachaQR_AVX2(AA3, BB3, CC3, DD3, CC1)
|
|
VMOVDQA tmpStoreAVX2, CC1
|
|
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $12, DD0, DD0, DD0
|
|
VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $12, DD1, DD1, DD1
|
|
VPALIGNR $4, BB2, BB2, BB2; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $12, DD2, DD2, DD2
|
|
VPALIGNR $4, BB3, BB3, BB3; VPALIGNR $8, CC3, CC3, CC3; VPALIGNR $12, DD3, DD3, DD3
|
|
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, CC3); chachaQR_AVX2(AA1, BB1, CC1, DD1, CC3); chachaQR_AVX2(AA2, BB2, CC2, DD2, CC3)
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VMOVDQA CC1, tmpStoreAVX2
|
|
chachaQR_AVX2(AA3, BB3, CC3, DD3, CC1)
|
|
VMOVDQA tmpStoreAVX2, CC1
|
|
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $4, DD0, DD0, DD0
|
|
VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $4, DD1, DD1, DD1
|
|
VPALIGNR $12, BB2, BB2, BB2; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $4, DD2, DD2, DD2
|
|
VPALIGNR $12, BB3, BB3, BB3; VPALIGNR $8, CC3, CC3, CC3; VPALIGNR $4, DD3, DD3, DD3
|
|
DECQ itr2
|
|
JNE sealAVX2IntroLoop
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2; VPADDD ·chacha20Constants<>(SB), AA3, AA3
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2; VPADDD state1StoreAVX2, BB3, BB3
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2; VPADDD state2StoreAVX2, CC3, CC3
|
|
VPADDD ctr0StoreAVX2, DD0, DD0; VPADDD ctr1StoreAVX2, DD1, DD1; VPADDD ctr2StoreAVX2, DD2, DD2; VPADDD ctr3StoreAVX2, DD3, DD3
|
|
|
|
VPERM2I128 $0x13, CC0, DD0, CC0 // Stream bytes 96 - 127
|
|
VPERM2I128 $0x02, AA0, BB0, DD0 // The Poly1305 key
|
|
VPERM2I128 $0x13, AA0, BB0, AA0 // Stream bytes 64 - 95
|
|
|
|
// Clamp and store poly key
|
|
VPAND ·polyClampMask<>(SB), DD0, DD0
|
|
VMOVDQA DD0, rsStoreAVX2
|
|
|
|
// Hash AD
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
|
|
// Can store at least 320 bytes
|
|
VPXOR (0*32)(inp), AA0, AA0
|
|
VPXOR (1*32)(inp), CC0, CC0
|
|
VMOVDQU AA0, (0*32)(oup)
|
|
VMOVDQU CC0, (1*32)(oup)
|
|
|
|
VPERM2I128 $0x02, AA1, BB1, AA0; VPERM2I128 $0x02, CC1, DD1, BB0; VPERM2I128 $0x13, AA1, BB1, CC0; VPERM2I128 $0x13, CC1, DD1, DD0
|
|
VPXOR (2*32)(inp), AA0, AA0; VPXOR (3*32)(inp), BB0, BB0; VPXOR (4*32)(inp), CC0, CC0; VPXOR (5*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (2*32)(oup); VMOVDQU BB0, (3*32)(oup); VMOVDQU CC0, (4*32)(oup); VMOVDQU DD0, (5*32)(oup)
|
|
VPERM2I128 $0x02, AA2, BB2, AA0; VPERM2I128 $0x02, CC2, DD2, BB0; VPERM2I128 $0x13, AA2, BB2, CC0; VPERM2I128 $0x13, CC2, DD2, DD0
|
|
VPXOR (6*32)(inp), AA0, AA0; VPXOR (7*32)(inp), BB0, BB0; VPXOR (8*32)(inp), CC0, CC0; VPXOR (9*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (6*32)(oup); VMOVDQU BB0, (7*32)(oup); VMOVDQU CC0, (8*32)(oup); VMOVDQU DD0, (9*32)(oup)
|
|
|
|
MOVQ $320, itr1
|
|
SUBQ $320, inl
|
|
LEAQ 320(inp), inp
|
|
|
|
VPERM2I128 $0x02, AA3, BB3, AA0; VPERM2I128 $0x02, CC3, DD3, BB0; VPERM2I128 $0x13, AA3, BB3, CC0; VPERM2I128 $0x13, CC3, DD3, DD0
|
|
CMPQ inl, $128
|
|
JBE sealAVX2SealHash
|
|
|
|
VPXOR (0*32)(inp), AA0, AA0; VPXOR (1*32)(inp), BB0, BB0; VPXOR (2*32)(inp), CC0, CC0; VPXOR (3*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (10*32)(oup); VMOVDQU BB0, (11*32)(oup); VMOVDQU CC0, (12*32)(oup); VMOVDQU DD0, (13*32)(oup)
|
|
SUBQ $128, inl
|
|
LEAQ 128(inp), inp
|
|
|
|
MOVQ $8, itr1
|
|
MOVQ $2, itr2
|
|
|
|
CMPQ inl, $128
|
|
JBE sealAVX2Tail128
|
|
CMPQ inl, $256
|
|
JBE sealAVX2Tail256
|
|
CMPQ inl, $384
|
|
JBE sealAVX2Tail384
|
|
CMPQ inl, $512
|
|
JBE sealAVX2Tail512
|
|
|
|
// We have 448 bytes to hash, but main loop hashes 512 bytes at a time - perform some rounds, before the main loop
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2; VMOVDQA AA0, AA3
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2; VMOVDQA BB0, BB3
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2; VMOVDQA CC0, CC3
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD1; VPADDD ·avx2IncMask<>(SB), DD1, DD2; VPADDD ·avx2IncMask<>(SB), DD2, DD3
|
|
VMOVDQA DD0, ctr0StoreAVX2; VMOVDQA DD1, ctr1StoreAVX2; VMOVDQA DD2, ctr2StoreAVX2; VMOVDQA DD3, ctr3StoreAVX2
|
|
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, CC3); chachaQR_AVX2(AA1, BB1, CC1, DD1, CC3); chachaQR_AVX2(AA2, BB2, CC2, DD2, CC3)
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VMOVDQA CC1, tmpStoreAVX2
|
|
chachaQR_AVX2(AA3, BB3, CC3, DD3, CC1)
|
|
VMOVDQA tmpStoreAVX2, CC1
|
|
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $12, DD0, DD0, DD0
|
|
VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $12, DD1, DD1, DD1
|
|
VPALIGNR $4, BB2, BB2, BB2; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $12, DD2, DD2, DD2
|
|
VPALIGNR $4, BB3, BB3, BB3; VPALIGNR $8, CC3, CC3, CC3; VPALIGNR $12, DD3, DD3, DD3
|
|
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, CC3); chachaQR_AVX2(AA1, BB1, CC1, DD1, CC3); chachaQR_AVX2(AA2, BB2, CC2, DD2, CC3)
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VMOVDQA CC1, tmpStoreAVX2
|
|
chachaQR_AVX2(AA3, BB3, CC3, DD3, CC1)
|
|
VMOVDQA tmpStoreAVX2, CC1
|
|
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $4, DD0, DD0, DD0
|
|
VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $4, DD1, DD1, DD1
|
|
VPALIGNR $12, BB2, BB2, BB2; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $4, DD2, DD2, DD2
|
|
VPALIGNR $12, BB3, BB3, BB3; VPALIGNR $8, CC3, CC3, CC3; VPALIGNR $4, DD3, DD3, DD3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
|
|
SUBQ $16, oup // Adjust the pointer
|
|
MOVQ $9, itr1
|
|
JMP sealAVX2InternalLoopStart
|
|
|
|
sealAVX2MainLoop:
|
|
// Load state, increment counter blocks, store the incremented counters
|
|
VMOVDQU ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2; VMOVDQA AA0, AA3
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2; VMOVDQA BB0, BB3
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2; VMOVDQA CC0, CC3
|
|
VMOVDQA ctr3StoreAVX2, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD1; VPADDD ·avx2IncMask<>(SB), DD1, DD2; VPADDD ·avx2IncMask<>(SB), DD2, DD3
|
|
VMOVDQA DD0, ctr0StoreAVX2; VMOVDQA DD1, ctr1StoreAVX2; VMOVDQA DD2, ctr2StoreAVX2; VMOVDQA DD3, ctr3StoreAVX2
|
|
MOVQ $10, itr1
|
|
|
|
sealAVX2InternalLoop:
|
|
polyAdd(0*8(oup))
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
polyMulStage1_AVX2
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
polyMulStage2_AVX2
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
polyMulStage3_AVX2
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulReduceStage
|
|
|
|
sealAVX2InternalLoopStart:
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
polyAdd(2*8(oup))
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
polyMulStage1_AVX2
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulStage2_AVX2
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2; VPALIGNR $4, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2; VPALIGNR $12, DD3, DD3, DD3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
polyMulStage3_AVX2
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
polyMulReduceStage
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
polyAdd(4*8(oup))
|
|
LEAQ (6*8)(oup), oup
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulStage1_AVX2
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
polyMulStage2_AVX2
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
polyMulStage3_AVX2
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyMulReduceStage
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2; VPALIGNR $12, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2; VPALIGNR $4, DD3, DD3, DD3
|
|
DECQ itr1
|
|
JNE sealAVX2InternalLoop
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2; VPADDD ·chacha20Constants<>(SB), AA3, AA3
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2; VPADDD state1StoreAVX2, BB3, BB3
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2; VPADDD state2StoreAVX2, CC3, CC3
|
|
VPADDD ctr0StoreAVX2, DD0, DD0; VPADDD ctr1StoreAVX2, DD1, DD1; VPADDD ctr2StoreAVX2, DD2, DD2; VPADDD ctr3StoreAVX2, DD3, DD3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
|
|
// We only hashed 480 of the 512 bytes available - hash the remaining 32 here
|
|
polyAdd(0*8(oup))
|
|
polyMulAVX2
|
|
LEAQ (4*8)(oup), oup
|
|
VPERM2I128 $0x02, AA0, BB0, CC3; VPERM2I128 $0x13, AA0, BB0, BB0; VPERM2I128 $0x02, CC0, DD0, AA0; VPERM2I128 $0x13, CC0, DD0, CC0
|
|
VPXOR (0*32)(inp), CC3, CC3; VPXOR (1*32)(inp), AA0, AA0; VPXOR (2*32)(inp), BB0, BB0; VPXOR (3*32)(inp), CC0, CC0
|
|
VMOVDQU CC3, (0*32)(oup); VMOVDQU AA0, (1*32)(oup); VMOVDQU BB0, (2*32)(oup); VMOVDQU CC0, (3*32)(oup)
|
|
VPERM2I128 $0x02, AA1, BB1, AA0; VPERM2I128 $0x02, CC1, DD1, BB0; VPERM2I128 $0x13, AA1, BB1, CC0; VPERM2I128 $0x13, CC1, DD1, DD0
|
|
VPXOR (4*32)(inp), AA0, AA0; VPXOR (5*32)(inp), BB0, BB0; VPXOR (6*32)(inp), CC0, CC0; VPXOR (7*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (4*32)(oup); VMOVDQU BB0, (5*32)(oup); VMOVDQU CC0, (6*32)(oup); VMOVDQU DD0, (7*32)(oup)
|
|
|
|
// and here
|
|
polyAdd(-2*8(oup))
|
|
polyMulAVX2
|
|
VPERM2I128 $0x02, AA2, BB2, AA0; VPERM2I128 $0x02, CC2, DD2, BB0; VPERM2I128 $0x13, AA2, BB2, CC0; VPERM2I128 $0x13, CC2, DD2, DD0
|
|
VPXOR (8*32)(inp), AA0, AA0; VPXOR (9*32)(inp), BB0, BB0; VPXOR (10*32)(inp), CC0, CC0; VPXOR (11*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (8*32)(oup); VMOVDQU BB0, (9*32)(oup); VMOVDQU CC0, (10*32)(oup); VMOVDQU DD0, (11*32)(oup)
|
|
VPERM2I128 $0x02, AA3, BB3, AA0; VPERM2I128 $0x02, tmpStoreAVX2, DD3, BB0; VPERM2I128 $0x13, AA3, BB3, CC0; VPERM2I128 $0x13, tmpStoreAVX2, DD3, DD0
|
|
VPXOR (12*32)(inp), AA0, AA0; VPXOR (13*32)(inp), BB0, BB0; VPXOR (14*32)(inp), CC0, CC0; VPXOR (15*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (12*32)(oup); VMOVDQU BB0, (13*32)(oup); VMOVDQU CC0, (14*32)(oup); VMOVDQU DD0, (15*32)(oup)
|
|
LEAQ (32*16)(inp), inp
|
|
SUBQ $(32*16), inl
|
|
CMPQ inl, $512
|
|
JG sealAVX2MainLoop
|
|
|
|
// Tail can only hash 480 bytes
|
|
polyAdd(0*8(oup))
|
|
polyMulAVX2
|
|
polyAdd(2*8(oup))
|
|
polyMulAVX2
|
|
LEAQ 32(oup), oup
|
|
|
|
MOVQ $10, itr1
|
|
MOVQ $0, itr2
|
|
CMPQ inl, $128
|
|
JBE sealAVX2Tail128
|
|
CMPQ inl, $256
|
|
JBE sealAVX2Tail256
|
|
CMPQ inl, $384
|
|
JBE sealAVX2Tail384
|
|
JMP sealAVX2Tail512
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for buffers smaller than 193 bytes
|
|
seal192AVX2:
|
|
// For up to 192 bytes of ciphertext and 64 bytes for the poly key, we process four blocks
|
|
VMOVDQA AA0, AA1
|
|
VMOVDQA BB0, BB1
|
|
VMOVDQA CC0, CC1
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VMOVDQA AA0, AA2
|
|
VMOVDQA BB0, BB2
|
|
VMOVDQA CC0, CC2
|
|
VMOVDQA DD0, DD2
|
|
VMOVDQA DD1, TT3
|
|
MOVQ $10, itr2
|
|
|
|
sealAVX2192InnerCipherLoop:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1
|
|
DECQ itr2
|
|
JNE sealAVX2192InnerCipherLoop
|
|
VPADDD AA2, AA0, AA0; VPADDD AA2, AA1, AA1
|
|
VPADDD BB2, BB0, BB0; VPADDD BB2, BB1, BB1
|
|
VPADDD CC2, CC0, CC0; VPADDD CC2, CC1, CC1
|
|
VPADDD DD2, DD0, DD0; VPADDD TT3, DD1, DD1
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
|
|
// Clamp and store poly key
|
|
VPAND ·polyClampMask<>(SB), TT0, TT0
|
|
VMOVDQA TT0, rsStoreAVX2
|
|
|
|
// Stream for up to 192 bytes
|
|
VPERM2I128 $0x13, AA0, BB0, AA0
|
|
VPERM2I128 $0x13, CC0, DD0, BB0
|
|
VPERM2I128 $0x02, AA1, BB1, CC0
|
|
VPERM2I128 $0x02, CC1, DD1, DD0
|
|
VPERM2I128 $0x13, AA1, BB1, AA1
|
|
VPERM2I128 $0x13, CC1, DD1, BB1
|
|
|
|
sealAVX2ShortSeal:
|
|
// Hash aad
|
|
MOVQ ad_len+80(FP), itr2
|
|
CALL polyHashADInternal<>(SB)
|
|
XORQ itr1, itr1
|
|
|
|
sealAVX2SealHash:
|
|
// itr1 holds the number of bytes encrypted but not yet hashed
|
|
CMPQ itr1, $16
|
|
JB sealAVX2ShortSealLoop
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
SUBQ $16, itr1
|
|
ADDQ $16, oup
|
|
JMP sealAVX2SealHash
|
|
|
|
sealAVX2ShortSealLoop:
|
|
CMPQ inl, $32
|
|
JB sealAVX2ShortTail32
|
|
SUBQ $32, inl
|
|
|
|
// Load for encryption
|
|
VPXOR (inp), AA0, AA0
|
|
VMOVDQU AA0, (oup)
|
|
LEAQ (1*32)(inp), inp
|
|
|
|
// Now can hash
|
|
polyAdd(0*8(oup))
|
|
polyMulAVX2
|
|
polyAdd(2*8(oup))
|
|
polyMulAVX2
|
|
LEAQ (1*32)(oup), oup
|
|
|
|
// Shift stream left
|
|
VMOVDQA BB0, AA0
|
|
VMOVDQA CC0, BB0
|
|
VMOVDQA DD0, CC0
|
|
VMOVDQA AA1, DD0
|
|
VMOVDQA BB1, AA1
|
|
VMOVDQA CC1, BB1
|
|
VMOVDQA DD1, CC1
|
|
VMOVDQA AA2, DD1
|
|
VMOVDQA BB2, AA2
|
|
JMP sealAVX2ShortSealLoop
|
|
|
|
sealAVX2ShortTail32:
|
|
CMPQ inl, $16
|
|
VMOVDQA A0, A1
|
|
JB sealAVX2ShortDone
|
|
|
|
SUBQ $16, inl
|
|
|
|
// Load for encryption
|
|
VPXOR (inp), A0, T0
|
|
VMOVDQU T0, (oup)
|
|
LEAQ (1*16)(inp), inp
|
|
|
|
// Hash
|
|
polyAdd(0*8(oup))
|
|
polyMulAVX2
|
|
LEAQ (1*16)(oup), oup
|
|
VPERM2I128 $0x11, AA0, AA0, AA0
|
|
VMOVDQA A0, A1
|
|
|
|
sealAVX2ShortDone:
|
|
VZEROUPPER
|
|
JMP sealSSETail
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for buffers smaller than 321 bytes
|
|
seal320AVX2:
|
|
// For up to 320 bytes of ciphertext and 64 bytes for the poly key, we process six blocks
|
|
VMOVDQA AA0, AA1; VMOVDQA BB0, BB1; VMOVDQA CC0, CC1; VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VMOVDQA AA0, AA2; VMOVDQA BB0, BB2; VMOVDQA CC0, CC2; VPADDD ·avx2IncMask<>(SB), DD1, DD2
|
|
VMOVDQA BB0, TT1; VMOVDQA CC0, TT2; VMOVDQA DD0, TT3
|
|
MOVQ $10, itr2
|
|
|
|
sealAVX2320InnerCipherLoop:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2
|
|
DECQ itr2
|
|
JNE sealAVX2320InnerCipherLoop
|
|
|
|
VMOVDQA ·chacha20Constants<>(SB), TT0
|
|
VPADDD TT0, AA0, AA0; VPADDD TT0, AA1, AA1; VPADDD TT0, AA2, AA2
|
|
VPADDD TT1, BB0, BB0; VPADDD TT1, BB1, BB1; VPADDD TT1, BB2, BB2
|
|
VPADDD TT2, CC0, CC0; VPADDD TT2, CC1, CC1; VPADDD TT2, CC2, CC2
|
|
VMOVDQA ·avx2IncMask<>(SB), TT0
|
|
VPADDD TT3, DD0, DD0; VPADDD TT0, TT3, TT3
|
|
VPADDD TT3, DD1, DD1; VPADDD TT0, TT3, TT3
|
|
VPADDD TT3, DD2, DD2
|
|
|
|
// Clamp and store poly key
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
VPAND ·polyClampMask<>(SB), TT0, TT0
|
|
VMOVDQA TT0, rsStoreAVX2
|
|
|
|
// Stream for up to 320 bytes
|
|
VPERM2I128 $0x13, AA0, BB0, AA0
|
|
VPERM2I128 $0x13, CC0, DD0, BB0
|
|
VPERM2I128 $0x02, AA1, BB1, CC0
|
|
VPERM2I128 $0x02, CC1, DD1, DD0
|
|
VPERM2I128 $0x13, AA1, BB1, AA1
|
|
VPERM2I128 $0x13, CC1, DD1, BB1
|
|
VPERM2I128 $0x02, AA2, BB2, CC1
|
|
VPERM2I128 $0x02, CC2, DD2, DD1
|
|
VPERM2I128 $0x13, AA2, BB2, AA2
|
|
VPERM2I128 $0x13, CC2, DD2, BB2
|
|
JMP sealAVX2ShortSeal
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 128 bytes of ciphertext
|
|
sealAVX2Tail128:
|
|
// Need to decrypt up to 128 bytes - prepare two blocks
|
|
// If we got here after the main loop - there are 512 encrypted bytes waiting to be hashed
|
|
// If we got here before the main loop - there are 448 encrpyred bytes waiting to be hashed
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0
|
|
VMOVDQA state1StoreAVX2, BB0
|
|
VMOVDQA state2StoreAVX2, CC0
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0
|
|
VMOVDQA DD0, DD1
|
|
|
|
sealAVX2Tail128LoopA:
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealAVX2Tail128LoopB:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0)
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
VPALIGNR $4, BB0, BB0, BB0
|
|
VPALIGNR $8, CC0, CC0, CC0
|
|
VPALIGNR $12, DD0, DD0, DD0
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0)
|
|
polyAdd(16(oup))
|
|
polyMul
|
|
LEAQ 32(oup), oup
|
|
VPALIGNR $12, BB0, BB0, BB0
|
|
VPALIGNR $8, CC0, CC0, CC0
|
|
VPALIGNR $4, DD0, DD0, DD0
|
|
DECQ itr1
|
|
JG sealAVX2Tail128LoopA
|
|
DECQ itr2
|
|
JGE sealAVX2Tail128LoopB
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA1
|
|
VPADDD state1StoreAVX2, BB0, BB1
|
|
VPADDD state2StoreAVX2, CC0, CC1
|
|
VPADDD DD1, DD0, DD1
|
|
|
|
VPERM2I128 $0x02, AA1, BB1, AA0
|
|
VPERM2I128 $0x02, CC1, DD1, BB0
|
|
VPERM2I128 $0x13, AA1, BB1, CC0
|
|
VPERM2I128 $0x13, CC1, DD1, DD0
|
|
JMP sealAVX2ShortSealLoop
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 256 bytes of ciphertext
|
|
sealAVX2Tail256:
|
|
// Need to decrypt up to 256 bytes - prepare two blocks
|
|
// If we got here after the main loop - there are 512 encrypted bytes waiting to be hashed
|
|
// If we got here before the main loop - there are 448 encrpyred bytes waiting to be hashed
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0; VMOVDQA ·chacha20Constants<>(SB), AA1
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA state1StoreAVX2, BB1
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA state2StoreAVX2, CC1
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD1
|
|
VMOVDQA DD0, TT1
|
|
VMOVDQA DD1, TT2
|
|
|
|
sealAVX2Tail256LoopA:
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealAVX2Tail256LoopB:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0)
|
|
polyAdd(16(oup))
|
|
polyMul
|
|
LEAQ 32(oup), oup
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1
|
|
DECQ itr1
|
|
JG sealAVX2Tail256LoopA
|
|
DECQ itr2
|
|
JGE sealAVX2Tail256LoopB
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1
|
|
VPADDD TT1, DD0, DD0; VPADDD TT2, DD1, DD1
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
VPERM2I128 $0x02, CC0, DD0, TT1
|
|
VPERM2I128 $0x13, AA0, BB0, TT2
|
|
VPERM2I128 $0x13, CC0, DD0, TT3
|
|
VPXOR (0*32)(inp), TT0, TT0; VPXOR (1*32)(inp), TT1, TT1; VPXOR (2*32)(inp), TT2, TT2; VPXOR (3*32)(inp), TT3, TT3
|
|
VMOVDQU TT0, (0*32)(oup); VMOVDQU TT1, (1*32)(oup); VMOVDQU TT2, (2*32)(oup); VMOVDQU TT3, (3*32)(oup)
|
|
MOVQ $128, itr1
|
|
LEAQ 128(inp), inp
|
|
SUBQ $128, inl
|
|
VPERM2I128 $0x02, AA1, BB1, AA0
|
|
VPERM2I128 $0x02, CC1, DD1, BB0
|
|
VPERM2I128 $0x13, AA1, BB1, CC0
|
|
VPERM2I128 $0x13, CC1, DD1, DD0
|
|
|
|
JMP sealAVX2SealHash
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 384 bytes of ciphertext
|
|
sealAVX2Tail384:
|
|
// Need to decrypt up to 384 bytes - prepare two blocks
|
|
// If we got here after the main loop - there are 512 encrypted bytes waiting to be hashed
|
|
// If we got here before the main loop - there are 448 encrpyred bytes waiting to be hashed
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD1; VPADDD ·avx2IncMask<>(SB), DD1, DD2
|
|
VMOVDQA DD0, TT1; VMOVDQA DD1, TT2; VMOVDQA DD2, TT3
|
|
|
|
sealAVX2Tail384LoopA:
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealAVX2Tail384LoopB:
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2
|
|
chachaQR_AVX2(AA0, BB0, CC0, DD0, TT0); chachaQR_AVX2(AA1, BB1, CC1, DD1, TT0); chachaQR_AVX2(AA2, BB2, CC2, DD2, TT0)
|
|
polyAdd(16(oup))
|
|
polyMul
|
|
LEAQ 32(oup), oup
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2
|
|
DECQ itr1
|
|
JG sealAVX2Tail384LoopA
|
|
DECQ itr2
|
|
JGE sealAVX2Tail384LoopB
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2
|
|
VPADDD TT1, DD0, DD0; VPADDD TT2, DD1, DD1; VPADDD TT3, DD2, DD2
|
|
VPERM2I128 $0x02, AA0, BB0, TT0
|
|
VPERM2I128 $0x02, CC0, DD0, TT1
|
|
VPERM2I128 $0x13, AA0, BB0, TT2
|
|
VPERM2I128 $0x13, CC0, DD0, TT3
|
|
VPXOR (0*32)(inp), TT0, TT0; VPXOR (1*32)(inp), TT1, TT1; VPXOR (2*32)(inp), TT2, TT2; VPXOR (3*32)(inp), TT3, TT3
|
|
VMOVDQU TT0, (0*32)(oup); VMOVDQU TT1, (1*32)(oup); VMOVDQU TT2, (2*32)(oup); VMOVDQU TT3, (3*32)(oup)
|
|
VPERM2I128 $0x02, AA1, BB1, TT0
|
|
VPERM2I128 $0x02, CC1, DD1, TT1
|
|
VPERM2I128 $0x13, AA1, BB1, TT2
|
|
VPERM2I128 $0x13, CC1, DD1, TT3
|
|
VPXOR (4*32)(inp), TT0, TT0; VPXOR (5*32)(inp), TT1, TT1; VPXOR (6*32)(inp), TT2, TT2; VPXOR (7*32)(inp), TT3, TT3
|
|
VMOVDQU TT0, (4*32)(oup); VMOVDQU TT1, (5*32)(oup); VMOVDQU TT2, (6*32)(oup); VMOVDQU TT3, (7*32)(oup)
|
|
MOVQ $256, itr1
|
|
LEAQ 256(inp), inp
|
|
SUBQ $256, inl
|
|
VPERM2I128 $0x02, AA2, BB2, AA0
|
|
VPERM2I128 $0x02, CC2, DD2, BB0
|
|
VPERM2I128 $0x13, AA2, BB2, CC0
|
|
VPERM2I128 $0x13, CC2, DD2, DD0
|
|
|
|
JMP sealAVX2SealHash
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Special optimization for the last 512 bytes of ciphertext
|
|
sealAVX2Tail512:
|
|
// Need to decrypt up to 512 bytes - prepare two blocks
|
|
// If we got here after the main loop - there are 512 encrypted bytes waiting to be hashed
|
|
// If we got here before the main loop - there are 448 encrpyred bytes waiting to be hashed
|
|
VMOVDQA ·chacha20Constants<>(SB), AA0; VMOVDQA AA0, AA1; VMOVDQA AA0, AA2; VMOVDQA AA0, AA3
|
|
VMOVDQA state1StoreAVX2, BB0; VMOVDQA BB0, BB1; VMOVDQA BB0, BB2; VMOVDQA BB0, BB3
|
|
VMOVDQA state2StoreAVX2, CC0; VMOVDQA CC0, CC1; VMOVDQA CC0, CC2; VMOVDQA CC0, CC3
|
|
VMOVDQA ctr3StoreAVX2, DD0
|
|
VPADDD ·avx2IncMask<>(SB), DD0, DD0; VPADDD ·avx2IncMask<>(SB), DD0, DD1; VPADDD ·avx2IncMask<>(SB), DD1, DD2; VPADDD ·avx2IncMask<>(SB), DD2, DD3
|
|
VMOVDQA DD0, ctr0StoreAVX2; VMOVDQA DD1, ctr1StoreAVX2; VMOVDQA DD2, ctr2StoreAVX2; VMOVDQA DD3, ctr3StoreAVX2
|
|
|
|
sealAVX2Tail512LoopA:
|
|
polyAdd(0(oup))
|
|
polyMul
|
|
LEAQ 16(oup), oup
|
|
|
|
sealAVX2Tail512LoopB:
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
polyAdd(0*8(oup))
|
|
polyMulAVX2
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VPALIGNR $4, BB0, BB0, BB0; VPALIGNR $4, BB1, BB1, BB1; VPALIGNR $4, BB2, BB2, BB2; VPALIGNR $4, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $12, DD0, DD0, DD0; VPALIGNR $12, DD1, DD1, DD1; VPALIGNR $12, DD2, DD2, DD2; VPALIGNR $12, DD3, DD3, DD3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol16<>(SB), DD0, DD0; VPSHUFB ·rol16<>(SB), DD1, DD1; VPSHUFB ·rol16<>(SB), DD2, DD2; VPSHUFB ·rol16<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
polyAdd(2*8(oup))
|
|
polyMulAVX2
|
|
LEAQ (4*8)(oup), oup
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $12, BB0, CC3; VPSRLD $20, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $12, BB1, CC3; VPSRLD $20, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $12, BB2, CC3; VPSRLD $20, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $12, BB3, CC3; VPSRLD $20, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VPADDD BB0, AA0, AA0; VPADDD BB1, AA1, AA1; VPADDD BB2, AA2, AA2; VPADDD BB3, AA3, AA3
|
|
VPXOR AA0, DD0, DD0; VPXOR AA1, DD1, DD1; VPXOR AA2, DD2, DD2; VPXOR AA3, DD3, DD3
|
|
VPSHUFB ·rol8<>(SB), DD0, DD0; VPSHUFB ·rol8<>(SB), DD1, DD1; VPSHUFB ·rol8<>(SB), DD2, DD2; VPSHUFB ·rol8<>(SB), DD3, DD3
|
|
VPADDD DD0, CC0, CC0; VPADDD DD1, CC1, CC1; VPADDD DD2, CC2, CC2; VPADDD DD3, CC3, CC3
|
|
VPXOR CC0, BB0, BB0; VPXOR CC1, BB1, BB1; VPXOR CC2, BB2, BB2; VPXOR CC3, BB3, BB3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPSLLD $7, BB0, CC3; VPSRLD $25, BB0, BB0; VPXOR CC3, BB0, BB0
|
|
VPSLLD $7, BB1, CC3; VPSRLD $25, BB1, BB1; VPXOR CC3, BB1, BB1
|
|
VPSLLD $7, BB2, CC3; VPSRLD $25, BB2, BB2; VPXOR CC3, BB2, BB2
|
|
VPSLLD $7, BB3, CC3; VPSRLD $25, BB3, BB3; VPXOR CC3, BB3, BB3
|
|
VMOVDQA tmpStoreAVX2, CC3
|
|
VPALIGNR $12, BB0, BB0, BB0; VPALIGNR $12, BB1, BB1, BB1; VPALIGNR $12, BB2, BB2, BB2; VPALIGNR $12, BB3, BB3, BB3
|
|
VPALIGNR $8, CC0, CC0, CC0; VPALIGNR $8, CC1, CC1, CC1; VPALIGNR $8, CC2, CC2, CC2; VPALIGNR $8, CC3, CC3, CC3
|
|
VPALIGNR $4, DD0, DD0, DD0; VPALIGNR $4, DD1, DD1, DD1; VPALIGNR $4, DD2, DD2, DD2; VPALIGNR $4, DD3, DD3, DD3
|
|
|
|
DECQ itr1
|
|
JG sealAVX2Tail512LoopA
|
|
DECQ itr2
|
|
JGE sealAVX2Tail512LoopB
|
|
|
|
VPADDD ·chacha20Constants<>(SB), AA0, AA0; VPADDD ·chacha20Constants<>(SB), AA1, AA1; VPADDD ·chacha20Constants<>(SB), AA2, AA2; VPADDD ·chacha20Constants<>(SB), AA3, AA3
|
|
VPADDD state1StoreAVX2, BB0, BB0; VPADDD state1StoreAVX2, BB1, BB1; VPADDD state1StoreAVX2, BB2, BB2; VPADDD state1StoreAVX2, BB3, BB3
|
|
VPADDD state2StoreAVX2, CC0, CC0; VPADDD state2StoreAVX2, CC1, CC1; VPADDD state2StoreAVX2, CC2, CC2; VPADDD state2StoreAVX2, CC3, CC3
|
|
VPADDD ctr0StoreAVX2, DD0, DD0; VPADDD ctr1StoreAVX2, DD1, DD1; VPADDD ctr2StoreAVX2, DD2, DD2; VPADDD ctr3StoreAVX2, DD3, DD3
|
|
VMOVDQA CC3, tmpStoreAVX2
|
|
VPERM2I128 $0x02, AA0, BB0, CC3
|
|
VPXOR (0*32)(inp), CC3, CC3
|
|
VMOVDQU CC3, (0*32)(oup)
|
|
VPERM2I128 $0x02, CC0, DD0, CC3
|
|
VPXOR (1*32)(inp), CC3, CC3
|
|
VMOVDQU CC3, (1*32)(oup)
|
|
VPERM2I128 $0x13, AA0, BB0, CC3
|
|
VPXOR (2*32)(inp), CC3, CC3
|
|
VMOVDQU CC3, (2*32)(oup)
|
|
VPERM2I128 $0x13, CC0, DD0, CC3
|
|
VPXOR (3*32)(inp), CC3, CC3
|
|
VMOVDQU CC3, (3*32)(oup)
|
|
|
|
VPERM2I128 $0x02, AA1, BB1, AA0
|
|
VPERM2I128 $0x02, CC1, DD1, BB0
|
|
VPERM2I128 $0x13, AA1, BB1, CC0
|
|
VPERM2I128 $0x13, CC1, DD1, DD0
|
|
VPXOR (4*32)(inp), AA0, AA0; VPXOR (5*32)(inp), BB0, BB0; VPXOR (6*32)(inp), CC0, CC0; VPXOR (7*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (4*32)(oup); VMOVDQU BB0, (5*32)(oup); VMOVDQU CC0, (6*32)(oup); VMOVDQU DD0, (7*32)(oup)
|
|
|
|
VPERM2I128 $0x02, AA2, BB2, AA0
|
|
VPERM2I128 $0x02, CC2, DD2, BB0
|
|
VPERM2I128 $0x13, AA2, BB2, CC0
|
|
VPERM2I128 $0x13, CC2, DD2, DD0
|
|
VPXOR (8*32)(inp), AA0, AA0; VPXOR (9*32)(inp), BB0, BB0; VPXOR (10*32)(inp), CC0, CC0; VPXOR (11*32)(inp), DD0, DD0
|
|
VMOVDQU AA0, (8*32)(oup); VMOVDQU BB0, (9*32)(oup); VMOVDQU CC0, (10*32)(oup); VMOVDQU DD0, (11*32)(oup)
|
|
|
|
MOVQ $384, itr1
|
|
LEAQ 384(inp), inp
|
|
SUBQ $384, inl
|
|
VPERM2I128 $0x02, AA3, BB3, AA0
|
|
VPERM2I128 $0x02, tmpStoreAVX2, DD3, BB0
|
|
VPERM2I128 $0x13, AA3, BB3, CC0
|
|
VPERM2I128 $0x13, tmpStoreAVX2, DD3, DD0
|
|
|
|
JMP sealAVX2SealHash
|
|
|
|
// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
|
|
TEXT ·cpuid(SB), NOSPLIT, $0-24
|
|
MOVL eaxArg+0(FP), AX
|
|
MOVL ecxArg+4(FP), CX
|
|
CPUID
|
|
MOVL AX, eax+8(FP)
|
|
MOVL BX, ebx+12(FP)
|
|
MOVL CX, ecx+16(FP)
|
|
MOVL DX, edx+20(FP)
|
|
RET
|
|
|
|
// func xgetbv() (eax, edx uint32)
|
|
TEXT ·xgetbv(SB),NOSPLIT,$0-8
|
|
MOVL $0, CX
|
|
XGETBV
|
|
MOVL AX, eax+0(FP)
|
|
MOVL DX, edx+4(FP)
|
|
RET
|
|
|