X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=crypto%2Fsha256.c;h=9d5ef674d6a9e4336d7c194fec2f3c270e323996;hb=73fffa0553eb3f5262bd7416923a200a06180cab;hp=39f5a654709e142ce9fbd124796f34506938c905;hpb=433e2af4175021d339b067f6e7ee0a4e4c4f7e2d;p=linux-2.6.git

diff --git a/crypto/sha256.c b/crypto/sha256.c
index 39f5a6547..9d5ef674d 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>
 
@@ -42,15 +43,10 @@ static inline u32 Maj(u32 x, u32 y, u32 z)
 	return (x & y) | (z & (x | y));
 }
 
-static inline u32 RORu32(u32 x, u32 y)
-{
-	return (x >> y) | (x << (32 - y));
-}
-
-#define e0(x)       (RORu32(x, 2) ^ RORu32(x,13) ^ RORu32(x,22))
-#define e1(x)       (RORu32(x, 6) ^ RORu32(x,11) ^ RORu32(x,25))
-#define s0(x)       (RORu32(x, 7) ^ RORu32(x,18) ^ (x >> 3))
-#define s1(x)       (RORu32(x,17) ^ RORu32(x,19) ^ (x >> 10))
+#define e0(x)       (ror32(x, 2) ^ ror32(x,13) ^ ror32(x,22))
+#define e1(x)       (ror32(x, 6) ^ ror32(x,11) ^ ror32(x,25))
+#define s0(x)       (ror32(x, 7) ^ ror32(x,18) ^ (x >> 3))
+#define s1(x)       (ror32(x,17) ^ ror32(x,19) ^ (x >> 10))
 
 #define H0         0x6a09e667
 #define H1         0xbb67ae85
@@ -63,7 +59,7 @@ static inline u32 RORu32(u32 x, u32 y)
 
 static inline void LOAD_OP(int I, u32 *W, const u8 *input)
 {
-	W[I] = __be32_to_cpu( ((u32*)(input))[I] );
+	W[I] = __be32_to_cpu( ((__be32*)(input))[I] );
 }
 
 static inline void BLEND_OP(int I, u32 *W)
@@ -284,22 +280,15 @@ static void sha256_update(void *ctx, const u8 *data, unsigned int len)
 static void sha256_final(void* ctx, u8 *out)
 {
 	struct sha256_ctx *sctx = ctx;
-	u8 bits[8];
-	unsigned int index, pad_len, t;
-	int i, j;
+	__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;
@@ -307,16 +296,11 @@ static void sha256_final(void* ctx, u8 *out)
 	sha256_update(sctx, padding, pad_len);
 
 	/* Append length (before padding) */
-	sha256_update(sctx, bits, 8);
+	sha256_update(sctx, (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));