1 files changed, 62 insertions, 45 deletions

diff --git a/crypto/sha1_generic.c b/crypto/sha1_generic.c
index 68c62f528eb..42794803c48 100644
--- a/crypto/sha1_generic.c
+++ b/crypto/sha1_generic.c
@@ -16,71 +16,68 @@
  * 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>
 #include <asm/byteorder.h>
 
-struct sha1_ctx {
-        u64 count;
-        u32 state[5];
-        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);
-	static const struct sha1_ctx initstate = {
-	  0,
-	  { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 },
-	  { 0, }
+	struct sha1_state *sctx = shash_desc_ctx(desc);
+
+	*sctx = (struct sha1_state){
+		.state = { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 },
 	};
 
-	*sctx = initstate;
+	return 0;
 }
 
-static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
+int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
 			unsigned int len)
 {
-	struct sha1_ctx *sctx = crypto_tfm_ctx(tfm);
+	struct sha1_state *sctx = shash_desc_ctx(desc);
 	unsigned int partial, done;
 	const u8 *src;
 
-	partial = sctx->count & 0x3f;
+	partial = sctx->count % SHA1_BLOCK_SIZE;
 	sctx->count += len;
 	done = 0;
 	src = data;
 
-	if ((partial + len) > 63) {
+	if ((partial + len) >= SHA1_BLOCK_SIZE) {
 		u32 temp[SHA_WORKSPACE_WORDS];
 
 		if (partial) {
 			done = -partial;
-			memcpy(sctx->buffer + partial, data, done + 64);
+			memcpy(sctx->buffer + partial, data,
+			       done + SHA1_BLOCK_SIZE);
 			src = sctx->buffer;
 		}
 
 		do {
 			sha_transform(sctx->state, src, temp);
-			done += 64;
+			done += SHA1_BLOCK_SIZE;
 			src = data + done;
-		} while (done + 63 < len);
+		} while (done + SHA1_BLOCK_SIZE <= len);
 
 		memset(temp, 0, sizeof(temp));
 		partial = 0;
 	}
 	memcpy(sctx->buffer + partial, src, len - done);
+
+	return 0;
 }
+EXPORT_SYMBOL(crypto_sha1_update);
 
 
 /* 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_state *sctx = shash_desc_ctx(desc);
 	__be32 *dst = (__be32 *)out;
 	u32 i, index, padlen;
 	__be64 bits;
@@ -91,10 +88,10 @@ 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);
+	crypto_sha1_update(desc, padding, padlen);
 
 	/* Append length */
-	sha1_update(tfm, (const u8 *)&bits, sizeof(bits));
+	crypto_sha1_update(desc, (const u8 *)&bits, sizeof(bits));
 
 	/* Store state in digest */
 	for (i = 0; i < 5; i++)
@@ -102,36 +99,56 @@ static void sha1_final(struct crypto_tfm *tfm, u8 *out)
 
 	/* Wipe context */
 	memset(sctx, 0, sizeof *sctx);
+
+	return 0;
+}
+
+static int sha1_export(struct shash_desc *desc, void *out)
+{
+	struct sha1_state *sctx = shash_desc_ctx(desc);
+
+	memcpy(out, sctx, 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 int sha1_import(struct shash_desc *desc, const void *in)
+{
+	struct sha1_state *sctx = shash_desc_ctx(desc);
+
+	memcpy(sctx, in, sizeof(*sctx));
+	return 0;
+}
+
+static struct shash_alg alg = {
+	.digestsize	=	SHA1_DIGEST_SIZE,
+	.init		=	sha1_init,
+	.update		=	crypto_sha1_update,
+	.final		=	sha1_final,
+	.export		=	sha1_export,
+	.import		=	sha1_import,
+	.descsize	=	sizeof(struct sha1_state),
+	.statesize	=	sizeof(struct sha1_state),
+	.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 init(void)
+static int __init sha1_generic_mod_init(void)
 {
-	return crypto_register_alg(&alg);
+	return crypto_register_shash(&alg);
 }
 
-static void __exit fini(void)
+static void __exit sha1_generic_mod_fini(void)
 {
-	crypto_unregister_alg(&alg);
+	crypto_unregister_shash(&alg);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(sha1_generic_mod_init);
+module_exit(sha1_generic_mod_fini);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");