diff options
Diffstat (limited to 'lib/crypto/md5.c')
| -rw-r--r-- | lib/crypto/md5.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/crypto/md5.c b/lib/crypto/md5.c index b834c912dfb..352f80f5d11 100644 --- a/lib/crypto/md5.c +++ b/lib/crypto/md5.c @@ -137,9 +137,12 @@ _PUBLIC_ void MD5Final(uint8_t digest[16], MD5_CTX *ctx) } byteReverse(ctx->in, 14); - /* Append length in bits and transform */ - ((uint32_t *) ctx->in)[14] = ctx->bits[0]; - ((uint32_t *) ctx->in)[15] = ctx->bits[1]; + /* Append length in bits and transform. + * Use memcpy to avoid strict-aliasing problems. + * This way it can be optimized. + */ + memcpy(&ctx->in[14 * sizeof(uint32_t)], &ctx->bits[0], sizeof(uint32_t)); + memcpy(&ctx->in[15 * sizeof(uint32_t)], &ctx->bits[1], sizeof(uint32_t)); MD5Transform(ctx->buf, (uint32_t *) ctx->in); byteReverse((uint8_t *) ctx->buf, 4); |