From 7c4468bc011131e77d0a872d6d9942390f8217ea Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 8 Nov 2008 09:10:40 +0800
Subject: [PATCH] crypto: rmd128 - Switch to shash

This patch changes rmd128 to the new shash interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 crypto/Kconfig  |  2 +-
 crypto/rmd128.c | 61 ++++++++++++++++++++++++++-----------------------
 2 files changed, 33 insertions(+), 30 deletions(-)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 359a7c24af38..848c886d6675 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -297,7 +297,7 @@ config CRYPTO_MICHAEL_MIC
 
 config CRYPTO_RMD128
 	tristate "RIPEMD-128 digest algorithm"
-	select CRYPTO_ALGAPI
+	select CRYPTO_HASH
 	help
 	  RIPEMD-128 (ISO/IEC 10118-3:2004).
 
diff --git a/crypto/rmd128.c b/crypto/rmd128.c
index 5de6fa2a76fb..1ceb6735aa53 100644
--- a/crypto/rmd128.c
+++ b/crypto/rmd128.c
@@ -13,11 +13,10 @@
  * any later version.
  *
  */
+#include <crypto/internal/hash.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/mm.h>
-#include <linux/crypto.h>
-#include <linux/cryptohash.h>
 #include <linux/types.h>
 #include <asm/byteorder.h>
 
@@ -218,9 +217,9 @@ static void rmd128_transform(u32 *state, const __le32 *in)
 	return;
 }
 
-static void rmd128_init(struct crypto_tfm *tfm)
+static int rmd128_init(struct shash_desc *desc)
 {
-	struct rmd128_ctx *rctx = crypto_tfm_ctx(tfm);
+	struct rmd128_ctx *rctx = shash_desc_ctx(desc);
 
 	rctx->byte_count = 0;
 
@@ -230,12 +229,14 @@ static void rmd128_init(struct crypto_tfm *tfm)
 	rctx->state[3] = RMD_H3;
 
 	memset(rctx->buffer, 0, sizeof(rctx->buffer));
+
+	return 0;
 }
 
-static void rmd128_update(struct crypto_tfm *tfm, const u8 *data,
-			  unsigned int len)
+static int rmd128_update(struct shash_desc *desc, const u8 *data,
+			 unsigned int len)
 {
-	struct rmd128_ctx *rctx = crypto_tfm_ctx(tfm);
+	struct rmd128_ctx *rctx = shash_desc_ctx(desc);
 	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
 
 	rctx->byte_count += len;
@@ -244,7 +245,7 @@ static void rmd128_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),
@@ -262,12 +263,15 @@ static void rmd128_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 rmd128_final(struct crypto_tfm *tfm, u8 *out)
+static int rmd128_final(struct shash_desc *desc, u8 *out)
 {
-	struct rmd128_ctx *rctx = crypto_tfm_ctx(tfm);
+	struct rmd128_ctx *rctx = shash_desc_ctx(desc);
 	u32 i, index, padlen;
 	__le64 bits;
 	__le32 *dst = (__le32 *)out;
@@ -278,10 +282,10 @@ static void rmd128_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);
-	rmd128_update(tfm, padding, padlen);
+	rmd128_update(desc, padding, padlen);
 
 	/* Append length */
-	rmd128_update(tfm, (const u8 *)&bits, sizeof(bits));
+	rmd128_update(desc, (const u8 *)&bits, sizeof(bits));
 
 	/* Store state in digest */
 	for (i = 0; i < 4; i++)
@@ -289,31 +293,32 @@ static void rmd128_final(struct crypto_tfm *tfm, u8 *out)
 
 	/* Wipe context */
 	memset(rctx, 0, sizeof(*rctx));
+
+	return 0;
 }
 
-static struct crypto_alg alg = {
-	.cra_name	 =	"rmd128",
-	.cra_driver_name =	"rmd128",
-	.cra_flags	 =	CRYPTO_ALG_TYPE_DIGEST,
-	.cra_blocksize	 =	RMD128_BLOCK_SIZE,
-	.cra_ctxsize	 =	sizeof(struct rmd128_ctx),
-	.cra_module	 =	THIS_MODULE,
-	.cra_list	 =	LIST_HEAD_INIT(alg.cra_list),
-	.cra_u		 =	{ .digest = {
-	.dia_digestsize	 =	RMD128_DIGEST_SIZE,
-	.dia_init	 =	rmd128_init,
-	.dia_update	 =	rmd128_update,
-	.dia_final	 =	rmd128_final } }
+static struct shash_alg alg = {
+	.digestsize	=	RMD128_DIGEST_SIZE,
+	.init		=	rmd128_init,
+	.update		=	rmd128_update,
+	.final		=	rmd128_final,
+	.descsize	=	sizeof(struct rmd128_ctx),
+	.base		=	{
+		.cra_name	 =	"rmd128",
+		.cra_flags	 =	CRYPTO_ALG_TYPE_SHASH,
+		.cra_blocksize	 =	RMD128_BLOCK_SIZE,
+		.cra_module	 =	THIS_MODULE,
+	}
 };
 
 static int __init rmd128_mod_init(void)
 {
-	return crypto_register_alg(&alg);
+	return crypto_register_shash(&alg);
 }
 
 static void __exit rmd128_mod_fini(void)
 {
-	crypto_unregister_alg(&alg);
+	crypto_unregister_shash(&alg);
 }
 
 module_init(rmd128_mod_init);
@@ -321,5 +326,3 @@ module_exit(rmd128_mod_fini);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("RIPEMD-128 Message Digest");
-
-MODULE_ALIAS("rmd128");
-- 
2.30.2