From: Tim Chen Subject: [PATCH 02/11] Expose SHA256 generic routine to be callable externally. Date: Fri, 22 Mar 2013 14:29:06 -0700 Message-ID: <1363987746.8972.56.camel@schen9-DESK> References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Kirk Yap , David Cote , James Guilford , Wajdi Feghali , linux-kernel , linux-crypto@vger.kernel.org To: Herbert Xu , "H. Peter Anvin" , "David S.Miller" Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org Other SHA256 routine may need to use the generic routine when FPU is not available. Signed-off-by: Tim Chen --- crypto/sha256_generic.c | 11 ++++++----- include/crypto/sha.h | 2 ++ 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/crypto/sha256_generic.c b/crypto/sha256_generic.c index c3ed4ec..5433667 100644 --- a/crypto/sha256_generic.c +++ b/crypto/sha256_generic.c @@ -246,7 +246,7 @@ static int sha256_init(struct shash_desc *desc) return 0; } -static int sha256_update(struct shash_desc *desc, const u8 *data, +int crypto_sha256_update(struct shash_desc *desc, const u8 *data, unsigned int len) { struct sha256_state *sctx = shash_desc_ctx(desc); @@ -277,6 +277,7 @@ static int sha256_update(struct shash_desc *desc, const u8 *data, return 0; } +EXPORT_SYMBOL(crypto_sha256_update); static int sha256_final(struct shash_desc *desc, u8 *out) { @@ -293,10 +294,10 @@ static int sha256_final(struct shash_desc *desc, u8 *out) /* Pad out to 56 mod 64. */ index = sctx->count & 0x3f; pad_len = (index < 56) ? (56 - index) : ((64+56) - index); - sha256_update(desc, padding, pad_len); + crypto_sha256_update(desc, padding, pad_len); /* Append length (before padding) */ - sha256_update(desc, (const u8 *)&bits, sizeof(bits)); + crypto_sha256_update(desc, (const u8 *)&bits, sizeof(bits)); /* Store state in digest */ for (i = 0; i < 8; i++) @@ -339,7 +340,7 @@ static int sha256_import(struct shash_desc *desc, const void *in) static struct shash_alg sha256_algs[2] = { { .digestsize = SHA256_DIGEST_SIZE, .init = sha256_init, - .update = sha256_update, + .update = crypto_sha256_update, .final = sha256_final, .export = sha256_export, .import = sha256_import, @@ -355,7 +356,7 @@ static struct shash_alg sha256_algs[2] = { { }, { .digestsize = SHA224_DIGEST_SIZE, .init = sha224_init, - .update = sha256_update, + .update = crypto_sha256_update, .final = sha224_final, .descsize = sizeof(struct sha256_state), .base = { diff --git a/include/crypto/sha.h b/include/crypto/sha.h index c6c9c1f..f46ff61 100644 --- a/include/crypto/sha.h +++ b/include/crypto/sha.h @@ -87,4 +87,6 @@ struct shash_desc; extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data, unsigned int len); +extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data, + unsigned int len); #endif -- 1.7.11.7