From: Herbert Xu Subject: [PATCH 5/6] crypto: rmd256 - Switch to shash Date: Mon, 01 Dec 2008 21:47:19 +0800 Message-ID: References: <20081201134448.GA21939@gondor.apana.org.au> To: Steffen Klassert , netdev@vger.kernel.org, davem@davemloft.net, klassert@mathematik.tu-chemnitz.de, Linux Crypto Mailing List Return-path: Received: from rhun.apana.org.au ([64.62.148.172]:59361 "EHLO arnor.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752189AbYLANr1 (ORCPT ); Mon, 1 Dec 2008 08:47:27 -0500 Sender: linux-crypto-owner@vger.kernel.org List-ID: crypto: rmd256 - Switch to shash This patch changes rmd256 to the new shash interface. Signed-off-by: Herbert Xu --- crypto/rmd256.c | 61 +++++++++++++++++++++++++++++--------------------------- 1 file changed, 32 insertions(+), 29 deletions(-) diff --git a/crypto/rmd256.c b/crypto/rmd256.c index e3de5b4..72eafa8 100644 --- a/crypto/rmd256.c +++ b/crypto/rmd256.c @@ -13,11 +13,10 @@ * any later version. * */ +#include #include #include #include -#include -#include #include #include @@ -233,9 +232,9 @@ static void rmd256_transform(u32 *state, const __le32 *in) return; } -static void rmd256_init(struct crypto_tfm *tfm) +static int rmd256_init(struct shash_desc *desc) { - struct rmd256_ctx *rctx = crypto_tfm_ctx(tfm); + struct rmd256_ctx *rctx = shash_desc_ctx(desc); rctx->byte_count = 0; @@ -249,12 +248,14 @@ static void rmd256_init(struct crypto_tfm *tfm) rctx->state[7] = RMD_H8; memset(rctx->buffer, 0, sizeof(rctx->buffer)); + + return 0; } -static void rmd256_update(struct crypto_tfm *tfm, const u8 *data, - unsigned int len) +static int rmd256_update(struct shash_desc *desc, const u8 *data, + unsigned int len) { - struct rmd256_ctx *rctx = crypto_tfm_ctx(tfm); + struct rmd256_ctx *rctx = shash_desc_ctx(desc); const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f); rctx->byte_count += len; @@ -263,7 +264,7 @@ static void rmd256_update(struct crypto_tfm *tfm, const u8 *data, if (avail > len) { memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), data, len); - return; + goto out; } memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), @@ -281,12 +282,15 @@ static void rmd256_update(struct crypto_tfm *tfm, const u8 *data, } memcpy(rctx->buffer, data, len); + +out: + return 0; } /* Add padding and return the message digest. */ -static void rmd256_final(struct crypto_tfm *tfm, u8 *out) +static int rmd256_final(struct shash_desc *desc, u8 *out) { - struct rmd256_ctx *rctx = crypto_tfm_ctx(tfm); + struct rmd256_ctx *rctx = shash_desc_ctx(desc); u32 i, index, padlen; __le64 bits; __le32 *dst = (__le32 *)out; @@ -297,10 +301,10 @@ static void rmd256_final(struct crypto_tfm *tfm, u8 *out) /* Pad out to 56 mod 64 */ index = rctx->byte_count & 0x3f; padlen = (index < 56) ? (56 - index) : ((64+56) - index); - rmd256_update(tfm, padding, padlen); + rmd256_update(desc, padding, padlen); /* Append length */ - rmd256_update(tfm, (const u8 *)&bits, sizeof(bits)); + rmd256_update(desc, (const u8 *)&bits, sizeof(bits)); /* Store state in digest */ for (i = 0; i < 8; i++) @@ -308,31 +312,32 @@ static void rmd256_final(struct crypto_tfm *tfm, u8 *out) /* Wipe context */ memset(rctx, 0, sizeof(*rctx)); + + return 0; } -static struct crypto_alg alg = { - .cra_name = "rmd256", - .cra_driver_name = "rmd256", - .cra_flags = CRYPTO_ALG_TYPE_DIGEST, - .cra_blocksize = RMD256_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rmd256_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(alg.cra_list), - .cra_u = { .digest = { - .dia_digestsize = RMD256_DIGEST_SIZE, - .dia_init = rmd256_init, - .dia_update = rmd256_update, - .dia_final = rmd256_final } } +static struct shash_alg alg = { + .digestsize = RMD256_DIGEST_SIZE, + .init = rmd256_init, + .update = rmd256_update, + .final = rmd256_final, + .descsize = sizeof(struct rmd256_ctx), + .base = { + .cra_name = "rmd256", + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = RMD256_BLOCK_SIZE, + .cra_module = THIS_MODULE, + } }; static int __init rmd256_mod_init(void) { - return crypto_register_alg(&alg); + return crypto_register_shash(&alg); } static void __exit rmd256_mod_fini(void) { - crypto_unregister_alg(&alg); + crypto_unregister_shash(&alg); } module_init(rmd256_mod_init); @@ -340,5 +345,3 @@ module_exit(rmd256_mod_fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("RIPEMD-256 Message Digest");