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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-10-14 17:22:51 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-11-08 23:24:01 +0100 |
| commit | 905a3ff4a5d70a00d9ba7819b9f43ad9ce0654e6 (patch) | |
| tree | e1e3e34ec2c1192d7f15fbb5bec8d1ac404e9ad8 /src | |
| parent | 922a09b6342f1d7859e67ee8949b4590dc796b04 (diff) | |
| download | VeraCrypt-905a3ff4a5d70a00d9ba7819b9f43ad9ce0654e6.tar.gz VeraCrypt-905a3ff4a5d70a00d9ba7819b9f43ad9ce0654e6.zip | |
Small code size optimization for RIPEMD-160 when compiled for boot encryption.
Diffstat (limited to 'src')
| -rw-r--r-- | src/Crypto/Rmd160.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/Crypto/Rmd160.c b/src/Crypto/Rmd160.c index 7441dd7d..05285c0a 100644 --- a/src/Crypto/Rmd160.c +++ b/src/Crypto/Rmd160.c @@ -68,17 +68,18 @@ void RMD160Init (RMD160_CTX *ctx) void RMD160Update (RMD160_CTX *ctx, const unsigned char *input, unsigned __int32 lenArg)
{
#ifndef TC_WINDOWS_BOOT
- uint64 len = lenArg, have, need;
+ uint64 len = lenArg;
#else
- uint32 len = lenArg, have, need;
+ uint32 len = lenArg;
#endif
+ unsigned int have, need;
/* Check how many bytes we already have and how many more we need. */
- have = ((ctx->count >> 3) & (RIPEMD160_BLOCK_LENGTH - 1));
+ have = (unsigned int) ((ctx->count) & (RIPEMD160_BLOCK_LENGTH - 1));
need = RIPEMD160_BLOCK_LENGTH - have;
/* Update bitcount */
- ctx->count += len << 3;
+ ctx->count += len;
if (len >= need) {
if (have != 0) {
@@ -114,15 +115,16 @@ static void RMD160Pad(RMD160_CTX *ctx) /* Convert count to 8 bytes in little endian order. */
#ifndef TC_WINDOWS_BOOT
- PUT_64BIT_LE(count, ctx->count);
+ uint64 bitcount = ctx->count << 3;
+ PUT_64BIT_LE(count, bitcount);
#else
*(uint32 *) (count + 4) = 0;
- *(uint32 *) (count + 0) = ctx->count;
+ *(uint32 *) (count + 0) = ctx->count << 3;
#endif
/* Pad out to 56 mod 64. */
padlen = RIPEMD160_BLOCK_LENGTH -
- (uint32)((ctx->count >> 3) & (RIPEMD160_BLOCK_LENGTH - 1));
+ (uint32)((ctx->count) & (RIPEMD160_BLOCK_LENGTH - 1));
if (padlen < 1 + 8)
padlen += RIPEMD160_BLOCK_LENGTH;
RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */
|