diff options
Diffstat (limited to 'lib/sha256.c')
| -rw-r--r-- | lib/sha256.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/sha256.c b/lib/sha256.c index c1482d3c..4b2cee37 100644 --- a/lib/sha256.c +++ b/lib/sha256.c @@ -1,7 +1,7 @@ /* sha256.c - Functions to compute SHA256 and SHA224 message digest of files or memory blocks according to the NIST specification FIPS-180-2. - Copyright (C) 2005-2006, 2008-2012 Free Software Foundation, Inc. + Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -90,7 +90,7 @@ sha224_init_ctx (struct sha256_ctx *ctx) /* Copy the value from v into the memory location pointed to by *cp, If your architecture allows unaligned access this is equivalent to * (uint32_t *) cp = v */ -static inline void +static void set_uint32 (char *cp, uint32_t v) { memcpy (cp, &v, sizeof v); @@ -454,13 +454,13 @@ sha256_process_block (const void *buffer, size_t len, struct sha256_ctx *ctx) uint32_t f = ctx->state[5]; uint32_t g = ctx->state[6]; uint32_t h = ctx->state[7]; + uint32_t lolen = len; /* First increment the byte count. FIPS PUB 180-2 specifies the possible length of the file up to 2^64 bits. Here we only compute the number of bytes. Do a double word increment. */ - ctx->total[0] += len; - if (ctx->total[0] < len) - ++ctx->total[1]; + ctx->total[0] += lolen; + ctx->total[1] += (len >> 31 >> 1) + (ctx->total[0] < lolen); #define rol(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) #define S0(x) (rol(x,25)^rol(x,14)^(x>>3)) |