X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=arch%2Fs390%2Fcrypto%2Fsha1_s390.c;h=b3cb5a89b00d08a37030c80ca53940ef9bc3af16;hb=526ea064f953fc5ad2fb905b537f490b9374a0f0;hp=5a834f6578ab85827c6a1416d788280c72322c47;hpb=f4921aff5b174349bc36551f142a5dbac782ea3f;p=mv-sheeva.git

diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 5a834f6578a..b3cb5a89b00 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -29,16 +29,11 @@
 #include <crypto/sha.h>
 
 #include "crypt_s390.h"
-
-struct s390_sha1_ctx {
-	u64 count;		/* message length */
-	u32 state[5];
-	u8 buf[2 * SHA1_BLOCK_SIZE];
-};
+#include "sha.h"
 
 static void sha1_init(struct crypto_tfm *tfm)
 {
-	struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
+	struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm);
 
 	sctx->state[0] = SHA1_H0;
 	sctx->state[1] = SHA1_H1;
@@ -46,79 +41,7 @@ static void sha1_init(struct crypto_tfm *tfm)
 	sctx->state[3] = SHA1_H3;
 	sctx->state[4] = SHA1_H4;
 	sctx->count = 0;
-}
-
-static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
-			unsigned int len)
-{
-	struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
-	unsigned int index;
-	int ret;
-
-	/* how much is already in the buffer? */
-	index = sctx->count & 0x3f;
-
-	sctx->count += len;
-
-	if (index + len < SHA1_BLOCK_SIZE)
-		goto store;
-
-	/* process one stored block */
-	if (index) {
-		memcpy(sctx->buf + index, data, SHA1_BLOCK_SIZE - index);
-		ret = crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buf,
-				      SHA1_BLOCK_SIZE);
-		BUG_ON(ret != SHA1_BLOCK_SIZE);
-		data += SHA1_BLOCK_SIZE - index;
-		len -= SHA1_BLOCK_SIZE - index;
-	}
-
-	/* process as many blocks as possible */
-	if (len >= SHA1_BLOCK_SIZE) {
-		ret = crypt_s390_kimd(KIMD_SHA_1, sctx->state, data,
-				      len & ~(SHA1_BLOCK_SIZE - 1));
-		BUG_ON(ret != (len & ~(SHA1_BLOCK_SIZE - 1)));
-		data += ret;
-		len -= ret;
-	}
-
-store:
-	/* anything left? */
-	if (len)
-		memcpy(sctx->buf + index , data, len);
-}
-
-/* Add padding and return the message digest. */
-static void sha1_final(struct crypto_tfm *tfm, u8 *out)
-{
-	struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
-	u64 bits;
-	unsigned int index, end;
-	int ret;
-
-	/* must perform manual padding */
-	index = sctx->count & 0x3f;
-	end =  (index < 56) ? SHA1_BLOCK_SIZE : (2 * SHA1_BLOCK_SIZE);
-
-	/* start pad with 1 */
-	sctx->buf[index] = 0x80;
-
-	/* pad with zeros */
-	index++;
-	memset(sctx->buf + index, 0x00, end - index - 8);
-
-	/* append message length */
-	bits = sctx->count * 8;
-	memcpy(sctx->buf + end - 8, &bits, sizeof(bits));
-
-	ret = crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buf, end);
-	BUG_ON(ret != end);
-
-	/* copy digest to out */
-	memcpy(out, sctx->state, SHA1_DIGEST_SIZE);
-
-	/* wipe context */
-	memset(sctx, 0, sizeof *sctx);
+	sctx->func = KIMD_SHA_1;
 }
 
 static struct crypto_alg alg = {
@@ -127,33 +50,31 @@ static struct crypto_alg alg = {
 	.cra_priority	=	CRYPT_S390_PRIORITY,
 	.cra_flags	=	CRYPTO_ALG_TYPE_DIGEST,
 	.cra_blocksize	=	SHA1_BLOCK_SIZE,
-	.cra_ctxsize	=	sizeof(struct s390_sha1_ctx),
+	.cra_ctxsize	=	sizeof(struct s390_sha_ctx),
 	.cra_module	=	THIS_MODULE,
 	.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 } }
+	.dia_update	=	s390_sha_update,
+	.dia_final	=	s390_sha_final } }
 };
 
-static int __init init(void)
+static int __init sha1_s390_init(void)
 {
 	if (!crypt_s390_func_available(KIMD_SHA_1))
 		return -EOPNOTSUPP;
-
 	return crypto_register_alg(&alg);
 }
 
-static void __exit fini(void)
+static void __exit sha1_s390_fini(void)
 {
 	crypto_unregister_alg(&alg);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(sha1_s390_init);
+module_exit(sha1_s390_fini);
 
 MODULE_ALIAS("sha1");
-
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");