X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=crypto%2Fsha256.c;h=716195bb54f247b936dd1e6ef6d655eec3dca79d;hb=838ccbc35eae5b44d47724e5f694dbec4a26d269;hp=c78da50a9b7a41c80214f0934524a7d377fd8f0e;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6

diff --git a/crypto/sha256.c b/crypto/sha256.c
index c78da50a9b..716195bb54 100644
--- a/crypto/sha256.c
+++ b/crypto/sha256.c
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/crypto.h>
+#include <linux/types.h>
 #include <asm/scatterlist.h>
 #include <asm/byteorder.h>
 
@@ -229,9 +230,9 @@ static void sha256_transform(u32 *state, const u8 *input)
 	memset(W, 0, 64 * sizeof(u32));
 }
 
-static void sha256_init(void *ctx)
+static void sha256_init(struct crypto_tfm *tfm)
 {
-	struct sha256_ctx *sctx = ctx;
+	struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
 	sctx->state[0] = H0;
 	sctx->state[1] = H1;
 	sctx->state[2] = H2;
@@ -241,12 +242,12 @@ static void sha256_init(void *ctx)
 	sctx->state[6] = H6;
 	sctx->state[7] = H7;
 	sctx->count[0] = sctx->count[1] = 0;
-	memset(sctx->buf, 0, sizeof(sctx->buf));
 }
 
-static void sha256_update(void *ctx, const u8 *data, unsigned int len)
+static void sha256_update(struct crypto_tfm *tfm, const u8 *data,
+			  unsigned int len)
 {
-	struct sha256_ctx *sctx = ctx;
+	struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
 	unsigned int i, index, part_len;
 
 	/* Compute number of bytes mod 128 */
@@ -276,42 +277,30 @@ static void sha256_update(void *ctx, const u8 *data, unsigned int len)
 	memcpy(&sctx->buf[index], &data[i], len-i);
 }
 
-static void sha256_final(void* ctx, u8 *out)
+static void sha256_final(struct crypto_tfm *tfm, u8 *out)
 {
-	struct sha256_ctx *sctx = ctx;
-	u8 bits[8];
-	unsigned int index, pad_len, t;
-	int i, j;
+	struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
+	__be32 *dst = (__be32 *)out;
+	__be32 bits[2];
+	unsigned int index, pad_len;
+	int i;
 	static const u8 padding[64] = { 0x80, };
 
 	/* Save number of bits */
-	t = sctx->count[0];
-	bits[7] = t; t >>= 8;
-	bits[6] = t; t >>= 8;
-	bits[5] = t; t >>= 8;
-	bits[4] = t;
-	t = sctx->count[1];
-	bits[3] = t; t >>= 8;
-	bits[2] = t; t >>= 8;
-	bits[1] = t; t >>= 8;
-	bits[0] = t;
+	bits[1] = cpu_to_be32(sctx->count[0]);
+	bits[0] = cpu_to_be32(sctx->count[1]);
 
 	/* Pad out to 56 mod 64. */
 	index = (sctx->count[0] >> 3) & 0x3f;
 	pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
-	sha256_update(sctx, padding, pad_len);
+	sha256_update(tfm, padding, pad_len);
 
 	/* Append length (before padding) */
-	sha256_update(sctx, bits, 8);
+	sha256_update(tfm, (const u8 *)bits, sizeof(bits));
 
 	/* Store state in digest */
-	for (i = j = 0; i < 8; i++, j += 4) {
-		t = sctx->state[i];
-		out[j+3] = t; t >>= 8;
-		out[j+2] = t; t >>= 8;
-		out[j+1] = t; t >>= 8;
-		out[j  ] = t;
-	}
+	for (i = 0; i < 8; i++)
+		dst[i] = cpu_to_be32(sctx->state[i]);
 
 	/* Zeroize sensitive information. */
 	memset(sctx, 0, sizeof(*sctx));
@@ -320,10 +309,12 @@ static void sha256_final(void* ctx, u8 *out)
 
 static struct crypto_alg alg = {
 	.cra_name	=	"sha256",
+	.cra_driver_name=	"sha256-generic",
 	.cra_flags	=	CRYPTO_ALG_TYPE_DIGEST,
 	.cra_blocksize	=	SHA256_HMAC_BLOCK_SIZE,
 	.cra_ctxsize	=	sizeof(struct sha256_ctx),
 	.cra_module	=	THIS_MODULE,
+	.cra_alignmask	=	3,
 	.cra_list       =       LIST_HEAD_INIT(alg.cra_list),
 	.cra_u		=	{ .digest = {
 	.dia_digestsize	=	SHA256_DIGEST_SIZE,
@@ -347,3 +338,5 @@ module_exit(fini);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm");
+
+MODULE_ALIAS("sha256-generic");