Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

[CRYPTO] rmd128: Fix endian problems

Browse source 
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>
This commit is contained in:
Adrian-Ken Rueegsegger 2008-05-20 11:41:48 +08:00 committed by Herbert Xu
parent 0bea3dc1e2
commit 0f923a2aab
1 changed files with 9 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
crypto/rmd128.c
View file

@ -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));