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248 lines
8.1 KiB
248 lines
8.1 KiB
From f2a13e7cba9e2b16f4888fbd9cf2bc25b95945be Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@googlemail.com>
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Date: Fri, 25 Aug 2017 15:47:21 +0200
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Subject: [PATCH 08/25] crypto: crypto4xx - enable AES RFC3686, ECB, CFB and
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OFB offloads
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The crypto engine supports more than just aes-cbc. This patch
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enables the remaining AES block cipher modes that pass the
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testmanager's test vectors.
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Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
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Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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---
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drivers/crypto/amcc/crypto4xx_alg.c | 66 ++++++++++++++++++++++++
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drivers/crypto/amcc/crypto4xx_core.c | 98 ++++++++++++++++++++++++++++++++++++
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drivers/crypto/amcc/crypto4xx_core.h | 10 ++++
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drivers/crypto/amcc/crypto4xx_sa.h | 3 ++
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4 files changed, 177 insertions(+)
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--- a/drivers/crypto/amcc/crypto4xx_alg.c
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+++ b/drivers/crypto/amcc/crypto4xx_alg.c
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@@ -28,6 +28,7 @@
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#include <crypto/algapi.h>
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#include <crypto/aes.h>
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#include <crypto/sha.h>
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+#include <crypto/ctr.h>
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#include "crypto4xx_reg_def.h"
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#include "crypto4xx_core.h"
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#include "crypto4xx_sa.h"
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@@ -172,6 +173,71 @@ int crypto4xx_setkey_aes_cbc(struct cryp
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CRYPTO_FEEDBACK_MODE_NO_FB);
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}
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+int crypto4xx_setkey_aes_cfb(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen)
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+{
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+ return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_CFB,
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+ CRYPTO_FEEDBACK_MODE_128BIT_CFB);
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+}
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+
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+int crypto4xx_setkey_aes_ecb(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen)
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+{
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+ return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_ECB,
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+ CRYPTO_FEEDBACK_MODE_NO_FB);
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+}
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+
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+int crypto4xx_setkey_aes_ofb(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen)
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+{
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+ return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_OFB,
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+ CRYPTO_FEEDBACK_MODE_64BIT_OFB);
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+}
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+
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+int crypto4xx_setkey_rfc3686(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen)
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+{
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+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
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+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
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+ int rc;
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+
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+ rc = crypto4xx_setkey_aes(cipher, key, keylen - CTR_RFC3686_NONCE_SIZE,
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+ CRYPTO_MODE_CTR, CRYPTO_FEEDBACK_MODE_NO_FB);
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+ if (rc)
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+ return rc;
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+
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+ memcpy(ctx->state_record,
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+ key + keylen - CTR_RFC3686_NONCE_SIZE, CTR_RFC3686_NONCE_SIZE);
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+
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+ return 0;
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+}
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+
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+int crypto4xx_rfc3686_encrypt(struct ablkcipher_request *req)
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+{
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+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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+ __be32 iv[AES_IV_SIZE / 4] = { *(u32 *)ctx->state_record,
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+ *(u32 *) req->info, *(u32 *) (req->info + 4), cpu_to_be32(1) };
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+
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+ ctx->direction = DIR_OUTBOUND;
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+ ctx->pd_ctl = 1;
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+
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+ return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
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+ req->nbytes, iv, AES_IV_SIZE);
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+}
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+
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+int crypto4xx_rfc3686_decrypt(struct ablkcipher_request *req)
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+{
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+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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+ __be32 iv[AES_IV_SIZE / 4] = { *(u32 *)ctx->state_record,
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+ *(u32 *) req->info, *(u32 *) (req->info + 4), cpu_to_be32(1) };
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+
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+ ctx->direction = DIR_INBOUND;
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+ ctx->pd_ctl = 1;
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+
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+ return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
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+ req->nbytes, iv, AES_IV_SIZE);
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+}
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+
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/**
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* HASH SHA1 Functions
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*/
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--- a/drivers/crypto/amcc/crypto4xx_core.c
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+++ b/drivers/crypto/amcc/crypto4xx_core.c
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@@ -36,6 +36,7 @@
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#include <asm/dcr-regs.h>
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#include <asm/cacheflush.h>
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#include <crypto/aes.h>
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+#include <crypto/ctr.h>
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#include <crypto/sha.h>
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#include "crypto4xx_reg_def.h"
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#include "crypto4xx_core.h"
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@@ -1140,6 +1141,103 @@ struct crypto4xx_alg_common crypto4xx_al
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}
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}
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}},
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+ { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, .u.cipher = {
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+ .cra_name = "cfb(aes)",
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+ .cra_driver_name = "cfb-aes-ppc4xx",
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+ .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
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+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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+ CRYPTO_ALG_ASYNC |
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+ CRYPTO_ALG_KERN_DRIVER_ONLY,
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+ .cra_blocksize = AES_BLOCK_SIZE,
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+ .cra_ctxsize = sizeof(struct crypto4xx_ctx),
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+ .cra_type = &crypto_ablkcipher_type,
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+ .cra_init = crypto4xx_alg_init,
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+ .cra_exit = crypto4xx_alg_exit,
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+ .cra_module = THIS_MODULE,
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+ .cra_u = {
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+ .ablkcipher = {
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+ .min_keysize = AES_MIN_KEY_SIZE,
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+ .max_keysize = AES_MAX_KEY_SIZE,
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+ .ivsize = AES_IV_SIZE,
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+ .setkey = crypto4xx_setkey_aes_cfb,
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+ .encrypt = crypto4xx_encrypt,
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+ .decrypt = crypto4xx_decrypt,
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+ }
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+ }
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+ } },
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+ { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, .u.cipher = {
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+ .cra_name = "rfc3686(ctr(aes))",
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+ .cra_driver_name = "rfc3686-ctr-aes-ppc4xx",
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+ .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
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+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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+ CRYPTO_ALG_ASYNC |
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+ CRYPTO_ALG_KERN_DRIVER_ONLY,
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+ .cra_blocksize = AES_BLOCK_SIZE,
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+ .cra_ctxsize = sizeof(struct crypto4xx_ctx),
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+ .cra_type = &crypto_ablkcipher_type,
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+ .cra_init = crypto4xx_alg_init,
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+ .cra_exit = crypto4xx_alg_exit,
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+ .cra_module = THIS_MODULE,
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+ .cra_u = {
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+ .ablkcipher = {
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+ .min_keysize = AES_MIN_KEY_SIZE +
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+ CTR_RFC3686_NONCE_SIZE,
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+ .max_keysize = AES_MAX_KEY_SIZE +
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+ CTR_RFC3686_NONCE_SIZE,
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+ .ivsize = CTR_RFC3686_IV_SIZE,
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+ .setkey = crypto4xx_setkey_rfc3686,
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+ .encrypt = crypto4xx_rfc3686_encrypt,
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+ .decrypt = crypto4xx_rfc3686_decrypt,
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+ }
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+ }
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+ } },
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+ { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, .u.cipher = {
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+ .cra_name = "ecb(aes)",
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+ .cra_driver_name = "ecb-aes-ppc4xx",
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+ .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
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+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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+ CRYPTO_ALG_ASYNC |
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+ CRYPTO_ALG_KERN_DRIVER_ONLY,
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+ .cra_blocksize = AES_BLOCK_SIZE,
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+ .cra_ctxsize = sizeof(struct crypto4xx_ctx),
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+ .cra_type = &crypto_ablkcipher_type,
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+ .cra_init = crypto4xx_alg_init,
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+ .cra_exit = crypto4xx_alg_exit,
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+ .cra_module = THIS_MODULE,
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+ .cra_u = {
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+ .ablkcipher = {
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+ .min_keysize = AES_MIN_KEY_SIZE,
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+ .max_keysize = AES_MAX_KEY_SIZE,
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+ .setkey = crypto4xx_setkey_aes_ecb,
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+ .encrypt = crypto4xx_encrypt,
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+ .decrypt = crypto4xx_decrypt,
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+ }
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+ }
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+ } },
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+ { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, .u.cipher = {
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+ .cra_name = "ofb(aes)",
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+ .cra_driver_name = "ofb-aes-ppc4xx",
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+ .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
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+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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+ CRYPTO_ALG_ASYNC |
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+ CRYPTO_ALG_KERN_DRIVER_ONLY,
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+ .cra_blocksize = AES_BLOCK_SIZE,
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+ .cra_ctxsize = sizeof(struct crypto4xx_ctx),
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+ .cra_type = &crypto_ablkcipher_type,
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+ .cra_init = crypto4xx_alg_init,
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+ .cra_exit = crypto4xx_alg_exit,
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+ .cra_module = THIS_MODULE,
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+ .cra_u = {
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+ .ablkcipher = {
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+ .min_keysize = AES_MIN_KEY_SIZE,
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+ .max_keysize = AES_MAX_KEY_SIZE,
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+ .ivsize = AES_IV_SIZE,
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+ .setkey = crypto4xx_setkey_aes_cbc,
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+ .encrypt = crypto4xx_encrypt,
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+ .decrypt = crypto4xx_decrypt,
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+ }
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+ }
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+ } },
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};
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/**
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--- a/drivers/crypto/amcc/crypto4xx_core.h
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+++ b/drivers/crypto/amcc/crypto4xx_core.h
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@@ -171,8 +171,18 @@ u32 crypto4xx_build_pd(struct crypto_asy
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void *iv, u32 iv_len);
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int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher,
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const u8 *key, unsigned int keylen);
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+int crypto4xx_setkey_aes_cfb(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen);
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+int crypto4xx_setkey_aes_ecb(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen);
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+int crypto4xx_setkey_aes_ofb(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen);
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+int crypto4xx_setkey_rfc3686(struct crypto_ablkcipher *cipher,
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+ const u8 *key, unsigned int keylen);
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int crypto4xx_encrypt(struct ablkcipher_request *req);
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int crypto4xx_decrypt(struct ablkcipher_request *req);
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+int crypto4xx_rfc3686_encrypt(struct ablkcipher_request *req);
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+int crypto4xx_rfc3686_decrypt(struct ablkcipher_request *req);
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int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm);
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int crypto4xx_hash_digest(struct ahash_request *req);
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int crypto4xx_hash_final(struct ahash_request *req);
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--- a/drivers/crypto/amcc/crypto4xx_sa.h
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+++ b/drivers/crypto/amcc/crypto4xx_sa.h
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@@ -112,6 +112,9 @@ union sa_command_0 {
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#define CRYPTO_MODE_ECB 0
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#define CRYPTO_MODE_CBC 1
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+#define CRYPTO_MODE_OFB 2
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+#define CRYPTO_MODE_CFB 3
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+#define CRYPTO_MODE_CTR 4
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#define CRYPTO_FEEDBACK_MODE_NO_FB 0
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#define CRYPTO_FEEDBACK_MODE_64BIT_OFB 0
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