From 6657674b23b8a8458a3222ec3da2fd376c78ae79 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Fri, 19 Jan 2018 12:04:36 +0000 Subject: [PATCH] crypto: sha3-generic - export init/update/final routines To allow accelerated implementations to fall back to the generic routines, e.g., in contexts where a SIMD based implementation is not allowed to run, expose the generic SHA3 init/update/final routines to other modules. Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu --- crypto/sha3_generic.c | 33 ++++++++++++++++++--------------- include/crypto/sha3.h | 5 +++++ 2 files changed, 23 insertions(+), 15 deletions(-) diff --git a/crypto/sha3_generic.c b/crypto/sha3_generic.c index c7084a24eaf9..a965b9d80559 100644 --- a/crypto/sha3_generic.c +++ b/crypto/sha3_generic.c @@ -145,7 +145,7 @@ static void __attribute__((__optimize__("O3"))) keccakf(u64 st[25]) } } -static int sha3_init(struct shash_desc *desc) +int crypto_sha3_init(struct shash_desc *desc) { struct sha3_state *sctx = shash_desc_ctx(desc); unsigned int digest_size = crypto_shash_digestsize(desc->tfm); @@ -157,8 +157,9 @@ static int sha3_init(struct shash_desc *desc) memset(sctx->st, 0, sizeof(sctx->st)); return 0; } +EXPORT_SYMBOL(crypto_sha3_init); -static int sha3_update(struct shash_desc *desc, const u8 *data, +int crypto_sha3_update(struct shash_desc *desc, const u8 *data, unsigned int len) { struct sha3_state *sctx = shash_desc_ctx(desc); @@ -194,8 +195,9 @@ static int sha3_update(struct shash_desc *desc, const u8 *data, return 0; } +EXPORT_SYMBOL(crypto_sha3_update); -static int sha3_final(struct shash_desc *desc, u8 *out) +int crypto_sha3_final(struct shash_desc *desc, u8 *out) { struct sha3_state *sctx = shash_desc_ctx(desc); unsigned int i, inlen = sctx->partial; @@ -220,12 +222,13 @@ static int sha3_final(struct shash_desc *desc, u8 *out) memset(sctx, 0, sizeof(*sctx)); return 0; } +EXPORT_SYMBOL(crypto_sha3_final); static struct shash_alg algs[] = { { .digestsize = SHA3_224_DIGEST_SIZE, - .init = sha3_init, - .update = sha3_update, - .final = sha3_final, + .init = crypto_sha3_init, + .update = crypto_sha3_update, + .final = crypto_sha3_final, .descsize = sizeof(struct sha3_state), .base.cra_name = "sha3-224", .base.cra_driver_name = "sha3-224-generic", @@ -234,9 +237,9 @@ static struct shash_alg algs[] = { { .base.cra_module = THIS_MODULE, }, { .digestsize = SHA3_256_DIGEST_SIZE, - .init = sha3_init, - .update = sha3_update, - .final = sha3_final, + .init = crypto_sha3_init, + .update = crypto_sha3_update, + .final = crypto_sha3_final, .descsize = sizeof(struct sha3_state), .base.cra_name = "sha3-256", .base.cra_driver_name = "sha3-256-generic", @@ -245,9 +248,9 @@ static struct shash_alg algs[] = { { .base.cra_module = THIS_MODULE, }, { .digestsize = SHA3_384_DIGEST_SIZE, - .init = sha3_init, - .update = sha3_update, - .final = sha3_final, + .init = crypto_sha3_init, + .update = crypto_sha3_update, + .final = crypto_sha3_final, .descsize = sizeof(struct sha3_state), .base.cra_name = "sha3-384", .base.cra_driver_name = "sha3-384-generic", @@ -256,9 +259,9 @@ static struct shash_alg algs[] = { { .base.cra_module = THIS_MODULE, }, { .digestsize = SHA3_512_DIGEST_SIZE, - .init = sha3_init, - .update = sha3_update, - .final = sha3_final, + .init = crypto_sha3_init, + .update = crypto_sha3_update, + .final = crypto_sha3_final, .descsize = sizeof(struct sha3_state), .base.cra_name = "sha3-512", .base.cra_driver_name = "sha3-512-generic", diff --git a/include/crypto/sha3.h b/include/crypto/sha3.h index 1339dcdbc9b2..080f60c2e6b1 100644 --- a/include/crypto/sha3.h +++ b/include/crypto/sha3.h @@ -26,4 +26,9 @@ struct sha3_state { u8 buf[SHA3_224_BLOCK_SIZE]; }; +int crypto_sha3_init(struct shash_desc *desc); +int crypto_sha3_update(struct shash_desc *desc, const u8 *data, + unsigned int len); +int crypto_sha3_final(struct shash_desc *desc, u8 *out); + #endif -- 2.30.2