diff options
Diffstat (limited to 'block-sha1/sha1.c')
| -rw-r--r-- | block-sha1/sha1.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/block-sha1/sha1.c b/block-sha1/sha1.c index 5bf1b36bd1..fdd400f22d 100644 --- a/block-sha1/sha1.c +++ b/block-sha1/sha1.c @@ -14,7 +14,6 @@ static void blk_SHA1Block(blk_SHA_CTX *ctx, const unsigned int *data); void blk_SHA1_Init(blk_SHA_CTX *ctx) { - ctx->lenW = 0; ctx->size = 0; /* Initialize H with the magic constants (see FIPS180 for constants) @@ -29,9 +28,9 @@ void blk_SHA1_Init(blk_SHA_CTX *ctx) void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *data, unsigned long len) { - int lenW = ctx->lenW; + int lenW = ctx->size & 63; - ctx->size += (unsigned long long) len << 3; + ctx->size += len; /* Read the data into W and process blocks as they get full */ @@ -43,7 +42,6 @@ void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *data, unsigned long len) lenW = (lenW + left) & 63; len -= left; data += left; - ctx->lenW = lenW; if (lenW) return; blk_SHA1Block(ctx, ctx->W); @@ -53,10 +51,8 @@ void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *data, unsigned long len) data += 64; len -= 64; } - if (len) { + if (len) memcpy(ctx->W, data, len); - ctx->lenW = len; - } } @@ -68,10 +64,11 @@ void blk_SHA1_Final(unsigned char hashout[20], blk_SHA_CTX *ctx) /* Pad with a binary 1 (ie 0x80), then zeroes, then length */ - padlen[0] = htonl(ctx->size >> 32); - padlen[1] = htonl(ctx->size); + padlen[0] = htonl(ctx->size >> 29); + padlen[1] = htonl(ctx->size << 3); - blk_SHA1_Update(ctx, pad, 1+ (63 & (55 - ctx->lenW))); + i = ctx->size & 63; + blk_SHA1_Update(ctx, pad, 1+ (63 & (55 - i))); blk_SHA1_Update(ctx, padlen, 8); /* Output hash |