[CRYPTO] rmd128: Fix endian problems

This patch is based on Sebastian Siewior's patch and
fixes endian issues making rmd128 work properly on
big-endian machines.

Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch>
Acked-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/rmd128.c b/crypto/rmd128.c
index f72d2ce..89a535a 100644 (file)
--- a/crypto/rmd128.c
+++ b/crypto/rmd128.c
@@ -44,7 +44,7 @@ struct rmd128_ctx {
 #define F4(x, y, z) (y ^ (z & (x ^ y)))        /* z ? x : y */
 
 #define ROUND(a, b, c, d, f, k, x, s)  { \
-       (a) += f((b), (c), (d)) + (x) + (k); \
+       (a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \
        (a) = rol32((a), (s)); \
 }
 
@@ -218,28 +218,6 @@ static void rmd128_transform(u32 *state, u32 const *in)
        return;
 }
 
-static inline void le32_to_cpu_array(u32 *buf, unsigned int words)
-{
-       while (words--) {
-               le32_to_cpus(buf);
-               buf++;
-       }
-}
-
-static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
-{
-       while (words--) {
-               cpu_to_le32s(buf);
-               buf++;
-       }
-}
-
-static inline void rmd128_transform_helper(struct rmd128_ctx *ctx)
-{
-       le32_to_cpu_array(ctx->buffer, sizeof(ctx->buffer) / sizeof(u32));
-       rmd128_transform(ctx->state, ctx->buffer);
-}
-
 static void rmd128_init(struct crypto_tfm *tfm)
 {
        struct rmd128_ctx *rctx = crypto_tfm_ctx(tfm);
@@ -272,13 +250,13 @@ static void rmd128_update(struct crypto_tfm *tfm, const u8 *data,
        memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
               data, avail);
 
-       rmd128_transform_helper(rctx);
+       rmd128_transform(rctx->state, rctx->buffer);
        data += avail;
        len -= avail;
 
        while (len >= sizeof(rctx->buffer)) {
                memcpy(rctx->buffer, data, sizeof(rctx->buffer));
-               rmd128_transform_helper(rctx);
+               rmd128_transform(rctx->state, rctx->buffer);
                data += sizeof(rctx->buffer);
                len -= sizeof(rctx->buffer);
        }
@@ -290,10 +268,12 @@ static void rmd128_update(struct crypto_tfm *tfm, const u8 *data,
 static void rmd128_final(struct crypto_tfm *tfm, u8 *out)
 {
        struct rmd128_ctx *rctx = crypto_tfm_ctx(tfm);
-       u32 index, padlen;
+       u32 i, index, padlen;
        u64 bits;
+       u32 *dst = (u32 *)out;
        static const u8 padding[64] = { 0x80, };
-       bits = rctx->byte_count << 3;
+
+       bits = cpu_to_le64(rctx->byte_count << 3);
 
        /* Pad out to 56 mod 64 */
        index = rctx->byte_count & 0x3f;
@@ -304,7 +284,8 @@ static void rmd128_final(struct crypto_tfm *tfm, u8 *out)
        rmd128_update(tfm, (const u8 *)&bits, sizeof(bits));
 
        /* Store state in digest */
-       memcpy(out, rctx->state, sizeof(rctx->state));
+       for (i = 0; i < 4; i++)
+               dst[i] = cpu_to_le32(rctx->state[i]);
 
        /* Wipe context */
        memset(rctx, 0, sizeof(*rctx));