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81 lines
2.8 KiB
81 lines
2.8 KiB
10 years ago
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/* $OpenBSD: sc25519.h,v 1.3 2013/12/09 11:03:45 markus Exp $ */
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/*
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* Public Domain, Authors: Daniel J. Bernstein, Niels Duif, Tanja Lange,
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* Peter Schwabe, Bo-Yin Yang.
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* Copied from supercop-20130419/crypto_sign/ed25519/ref/sc25519.h
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*/
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#ifndef SC25519_H
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#define SC25519_H
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#include "crypto_api.h"
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#define sc25519 crypto_sign_ed25519_ref_sc25519
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#define shortsc25519 crypto_sign_ed25519_ref_shortsc25519
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#define sc25519_from32bytes crypto_sign_ed25519_ref_sc25519_from32bytes
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#define shortsc25519_from16bytes crypto_sign_ed25519_ref_shortsc25519_from16bytes
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#define sc25519_from64bytes crypto_sign_ed25519_ref_sc25519_from64bytes
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#define sc25519_from_shortsc crypto_sign_ed25519_ref_sc25519_from_shortsc
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#define sc25519_to32bytes crypto_sign_ed25519_ref_sc25519_to32bytes
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#define sc25519_iszero_vartime crypto_sign_ed25519_ref_sc25519_iszero_vartime
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#define sc25519_isshort_vartime crypto_sign_ed25519_ref_sc25519_isshort_vartime
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#define sc25519_lt_vartime crypto_sign_ed25519_ref_sc25519_lt_vartime
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#define sc25519_add crypto_sign_ed25519_ref_sc25519_add
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#define sc25519_sub_nored crypto_sign_ed25519_ref_sc25519_sub_nored
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#define sc25519_mul crypto_sign_ed25519_ref_sc25519_mul
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#define sc25519_mul_shortsc crypto_sign_ed25519_ref_sc25519_mul_shortsc
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#define sc25519_window3 crypto_sign_ed25519_ref_sc25519_window3
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#define sc25519_window5 crypto_sign_ed25519_ref_sc25519_window5
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#define sc25519_2interleave2 crypto_sign_ed25519_ref_sc25519_2interleave2
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typedef struct
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{
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crypto_uint32 v[32];
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}
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sc25519;
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typedef struct
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{
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crypto_uint32 v[16];
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}
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shortsc25519;
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void sc25519_from32bytes(sc25519 *r, const unsigned char x[32]);
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void shortsc25519_from16bytes(shortsc25519 *r, const unsigned char x[16]);
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void sc25519_from64bytes(sc25519 *r, const unsigned char x[64]);
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void sc25519_from_shortsc(sc25519 *r, const shortsc25519 *x);
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void sc25519_to32bytes(unsigned char r[32], const sc25519 *x);
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int sc25519_iszero_vartime(const sc25519 *x);
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int sc25519_isshort_vartime(const sc25519 *x);
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int sc25519_lt_vartime(const sc25519 *x, const sc25519 *y);
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void sc25519_add(sc25519 *r, const sc25519 *x, const sc25519 *y);
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void sc25519_sub_nored(sc25519 *r, const sc25519 *x, const sc25519 *y);
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void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y);
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void sc25519_mul_shortsc(sc25519 *r, const sc25519 *x, const shortsc25519 *y);
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/* Convert s into a representation of the form \sum_{i=0}^{84}r[i]2^3
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* with r[i] in {-4,...,3}
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*/
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void sc25519_window3(signed char r[85], const sc25519 *s);
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/* Convert s into a representation of the form \sum_{i=0}^{50}r[i]2^5
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* with r[i] in {-16,...,15}
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*/
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void sc25519_window5(signed char r[51], const sc25519 *s);
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void sc25519_2interleave2(unsigned char r[127], const sc25519 *s1, const sc25519 *s2);
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#endif
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