crypto: rmd256 - Switch to shash

This patch changes rmd256 to the new shash interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 33 insertions, 30 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 513b9fb6723d..7f3d7954c929 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -327,7 +327,7 @@ config CRYPTO_RMD160
 
 config CRYPTO_RMD256
         tristate "RIPEMD-256 digest algorithm"
-        select CRYPTO_ALGAPI
+        select CRYPTO_HASH
         help
           RIPEMD-256 is an optional extension of RIPEMD-128 with a
           256 bit hash. It is intended for applications that require
diff --git a/crypto/rmd256.c b/crypto/rmd256.c
index e3de5b4cb47f..72eafa8d2e7b 100644
--- a/crypto/rmd256.c
+++ b/crypto/rmd256.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>
 
@@ -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");
-
-MODULE_ALIAS("rmd256");