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[linux-2.6.git] / crypto / sha512.c

diff --git a/crypto/sha512.c b/crypto/sha512.c
index 6acaea9..f1a8dc0 100644 (file)
--- a/crypto/sha512.c
+++ b/crypto/sha512.c
@@ -30,7 +30,6 @@ struct sha512_ctx {
        u64 state[8];
        u32 count[4];
        u8 buf[128];
-       u64 W[80];
 };
 
 static inline u64 Ch(u64 x, u64 y, u64 z)
@@ -105,18 +104,34 @@ const u64 sha512_K[80] = {
 
 static inline void LOAD_OP(int I, u64 *W, const u8 *input)
 {
-       W[I] = __be64_to_cpu( ((u64*)(input))[I] );
+        u64 t1  = input[(8*I)  ] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+1] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+2] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+3] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+4] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+5] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+6] & 0xff;
+        t1 <<= 8;
+        t1 |= input[(8*I)+7] & 0xff;
+        W[I] = t1;
 }
 
 static inline void BLEND_OP(int I, u64 *W)
 {
-       W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
+        W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
 }
 
 static void
-sha512_transform(u64 *state, u64 *W, const u8 *input)
+sha512_transform(u64 *state, const u8 *input)
 {
        u64 a, b, c, d, e, f, g, h, t1, t2;
+       u64 W[80];
 
        int i;
 
@@ -157,6 +172,7 @@ sha512_transform(u64 *state, u64 *W, const u8 *input)
 
        /* erase our data */
        a = b = c = d = e = f = g = h = t1 = t2 = 0;
+       memset(W, 0, 80 * sizeof(u64));
 }
 
 static void
@@ -214,10 +230,10 @@ sha512_update(void *ctx, const u8 *data, unsigned int len)
        /* Transform as many times as possible. */
        if (len >= part_len) {
                memcpy(&sctx->buf[index], data, part_len);
-               sha512_transform(sctx->state, sctx->W, sctx->buf);
+               sha512_transform(sctx->state, sctx->buf);
 
                for (i = part_len; i + 127 < len; i+=128)
-                       sha512_transform(sctx->state, sctx->W, &data[i]);
+                       sha512_transform(sctx->state, &data[i]);
 
                index = 0;
        } else {
@@ -226,9 +242,6 @@ sha512_update(void *ctx, const u8 *data, unsigned int len)
 
        /* Buffer remaining input */
        memcpy(&sctx->buf[index], &data[i], len - i);
-
-       /* erase our data */
-       memset(sctx->W, 0, sizeof(sctx->W));
 }
 
 static void