crypto: sha1 - Switch to shash
Adrian-Ken Rueegsegger [Tue, 2 Dec 2008 13:08:20 +0000 (21:08 +0800)]
This patch changes sha1 to the new shash interface.

Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig
crypto/sha1_generic.c

index edf6c71..5386beb 100644 (file)
@@ -351,7 +351,7 @@ config CRYPTO_RMD320
 
 config CRYPTO_SHA1
        tristate "SHA1 digest algorithm"
-       select CRYPTO_ALGAPI
+       select CRYPTO_HASH
        help
          SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
 
index c7c6899..9efef20 100644 (file)
  * 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 <crypto/sha.h>
@@ -31,9 +31,10 @@ struct sha1_ctx {
         u8 buffer[64];
 };
 
-static void sha1_init(struct crypto_tfm *tfm)
+static int sha1_init(struct shash_desc *desc)
 {
-       struct sha1_ctx *sctx = crypto_tfm_ctx(tfm);
+       struct sha1_ctx *sctx = shash_desc_ctx(desc);
+
        static const struct sha1_ctx initstate = {
          0,
          { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 },
@@ -41,12 +42,14 @@ static void sha1_init(struct crypto_tfm *tfm)
        };
 
        *sctx = initstate;
+
+       return 0;
 }
 
-static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
+static int sha1_update(struct shash_desc *desc, const u8 *data,
                        unsigned int len)
 {
-       struct sha1_ctx *sctx = crypto_tfm_ctx(tfm);
+       struct sha1_ctx *sctx = shash_desc_ctx(desc);
        unsigned int partial, done;
        const u8 *src;
 
@@ -74,13 +77,15 @@ static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
                partial = 0;
        }
        memcpy(sctx->buffer + partial, src, len - done);
+
+       return 0;
 }
 
 
 /* Add padding and return the message digest. */
-static void sha1_final(struct crypto_tfm *tfm, u8 *out)
+static int sha1_final(struct shash_desc *desc, u8 *out)
 {
-       struct sha1_ctx *sctx = crypto_tfm_ctx(tfm);
+       struct sha1_ctx *sctx = shash_desc_ctx(desc);
        __be32 *dst = (__be32 *)out;
        u32 i, index, padlen;
        __be64 bits;
@@ -91,10 +96,10 @@ static void sha1_final(struct crypto_tfm *tfm, u8 *out)
        /* Pad out to 56 mod 64 */
        index = sctx->count & 0x3f;
        padlen = (index < 56) ? (56 - index) : ((64+56) - index);
-       sha1_update(tfm, padding, padlen);
+       sha1_update(desc, padding, padlen);
 
        /* Append length */
-       sha1_update(tfm, (const u8 *)&bits, sizeof(bits));
+       sha1_update(desc, (const u8 *)&bits, sizeof(bits));
 
        /* Store state in digest */
        for (i = 0; i < 5; i++)
@@ -102,32 +107,33 @@ static void sha1_final(struct crypto_tfm *tfm, u8 *out)
 
        /* Wipe context */
        memset(sctx, 0, sizeof *sctx);
+
+       return 0;
 }
 
-static struct crypto_alg alg = {
-       .cra_name       =       "sha1",
-       .cra_driver_name=       "sha1-generic",
-       .cra_flags      =       CRYPTO_ALG_TYPE_DIGEST,
-       .cra_blocksize  =       SHA1_BLOCK_SIZE,
-       .cra_ctxsize    =       sizeof(struct sha1_ctx),
-       .cra_module     =       THIS_MODULE,
-       .cra_alignmask  =       3,
-       .cra_list       =       LIST_HEAD_INIT(alg.cra_list),
-       .cra_u          =       { .digest = {
-       .dia_digestsize =       SHA1_DIGEST_SIZE,
-       .dia_init       =       sha1_init,
-       .dia_update     =       sha1_update,
-       .dia_final      =       sha1_final } }
+static struct shash_alg alg = {
+       .digestsize     =       SHA1_DIGEST_SIZE,
+       .init           =       sha1_init,
+       .update         =       sha1_update,
+       .final          =       sha1_final,
+       .descsize       =       sizeof(struct sha1_ctx),
+       .base           =       {
+               .cra_name       =       "sha1",
+               .cra_driver_name=       "sha1-generic",
+               .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
+               .cra_blocksize  =       SHA1_BLOCK_SIZE,
+               .cra_module     =       THIS_MODULE,
+       }
 };
 
 static int __init sha1_generic_mod_init(void)
 {
-       return crypto_register_alg(&alg);
+       return crypto_register_shash(&alg);
 }
 
 static void __exit sha1_generic_mod_fini(void)
 {
-       crypto_unregister_alg(&alg);
+       crypto_unregister_shash(&alg);
 }
 
 module_init(sha1_generic_mod_init);