1 files changed, 55 insertions, 108 deletions

diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index af4460ec381..a1b3a9dc9d8 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -8,11 +8,11 @@
  * implementation written by Steve Reid.
  *
  * s390 Version:
- *   Copyright IBM Corp. 2003,2007
+ *   Copyright IBM Corp. 2003, 2007
  *   Author(s): Thomas Spatzier
  *		Jan Glauber (jan.glauber@de.ibm.com)
  *
- * Derived from "crypto/sha1.c"
+ * Derived from "crypto/sha1_generic.c"
  *   Copyright (c) Alan Smithee.
  *   Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
  *   Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
@@ -23,139 +23,86 @@
  * any later version.
  *
  */
+#include <crypto/internal/hash.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/crypto.h>
+#include <crypto/sha.h>
 
 #include "crypt_s390.h"
+#include "sha.h"
 
-#define SHA1_DIGEST_SIZE	20
-#define SHA1_BLOCK_SIZE		64
-
-struct s390_sha1_ctx {
-	u64 count;		/* message length */
-	u32 state[5];
-	u8 buf[2 * SHA1_BLOCK_SIZE];
-};
-
-static void sha1_init(struct crypto_tfm *tfm)
+static int sha1_init(struct shash_desc *desc)
 {
-	struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
+	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
 
-	sctx->state[0] = 0x67452301;
-	sctx->state[1] = 0xEFCDAB89;
-	sctx->state[2] = 0x98BADCFE;
-	sctx->state[3] = 0x10325476;
-	sctx->state[4] = 0xC3D2E1F0;
+	sctx->state[0] = SHA1_H0;
+	sctx->state[1] = SHA1_H1;
+	sctx->state[2] = SHA1_H2;
+	sctx->state[3] = SHA1_H3;
+	sctx->state[4] = SHA1_H4;
 	sctx->count = 0;
+	sctx->func = KIMD_SHA_1;
+
+	return 0;
 }
 
-static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
-			unsigned int len)
+static int sha1_export(struct shash_desc *desc, void *out)
 {
-	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;
-	}
+	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
+	struct sha1_state *octx = out;
 
-store:
-	/* anything left? */
-	if (len)
-		memcpy(sctx->buf + index , data, len);
+	octx->count = sctx->count;
+	memcpy(octx->state, sctx->state, sizeof(octx->state));
+	memcpy(octx->buffer, sctx->buf, sizeof(octx->buffer));
+	return 0;
 }
 
-/* Add padding and return the message digest. */
-static void sha1_final(struct crypto_tfm *tfm, u8 *out)
+static int sha1_import(struct shash_desc *desc, const void *in)
 {
-	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);
+	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
+	const struct sha1_state *ictx = in;
+
+	sctx->count = ictx->count;
+	memcpy(sctx->state, ictx->state, sizeof(ictx->state));
+	memcpy(sctx->buf, ictx->buffer, sizeof(ictx->buffer));
+	sctx->func = KIMD_SHA_1;
+	return 0;
 }
 
-static struct crypto_alg alg = {
-	.cra_name	=	"sha1",
-	.cra_driver_name=	"sha1-s390",
-	.cra_priority	=	CRYPT_S390_PRIORITY,
-	.cra_flags	=	CRYPTO_ALG_TYPE_DIGEST,
-	.cra_blocksize	=	SHA1_BLOCK_SIZE,
-	.cra_ctxsize	=	sizeof(struct s390_sha1_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 } }
+static struct shash_alg alg = {
+	.digestsize	=	SHA1_DIGEST_SIZE,
+	.init		=	sha1_init,
+	.update		=	s390_sha_update,
+	.final		=	s390_sha_final,
+	.export		=	sha1_export,
+	.import		=	sha1_import,
+	.descsize	=	sizeof(struct s390_sha_ctx),
+	.statesize	=	sizeof(struct sha1_state),
+	.base		=	{
+		.cra_name	=	"sha1",
+		.cra_driver_name=	"sha1-s390",
+		.cra_priority	=	CRYPT_S390_PRIORITY,
+		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
+		.cra_blocksize	=	SHA1_BLOCK_SIZE,
+		.cra_module	=	THIS_MODULE,
+	}
 };
 
-static int __init init(void)
+static int __init sha1_s390_init(void)
 {
-	if (!crypt_s390_func_available(KIMD_SHA_1))
+	if (!crypt_s390_func_available(KIMD_SHA_1, CRYPT_S390_MSA))
 		return -EOPNOTSUPP;
-
-	return crypto_register_alg(&alg);
+	return crypto_register_shash(&alg);
 }
 
-static void __exit fini(void)
+static void __exit sha1_s390_fini(void)
 {
-	crypto_unregister_alg(&alg);
+	crypto_unregister_shash(&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");