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Move {Read,Write}{LE,BE}{32,64} to common.h and use builtins if possible

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This commit is contained in:
Pieter Wuille
2014-05-03 01:04:18 +02:00
parent a5bc9c0917
commit 7ecd9739d9
5 changed files with 52 additions and 61 deletions
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17
src/crypto/ripemd160.cpp
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@@ -4,24 +4,12 @@
#include "crypto/ripemd160.h"
#include "crypto/common.h"
#include <string.h>
// Internal implementation code.
namespace {
/** Read 4 bytes, and interpret them as a 32-bit unsigned little-endian integer. */
uint32_t inline ReadLE32(const unsigned char *data) {
return ((uint32_t)data[0] | (uint32_t)data[1] << 8 | (uint32_t)data[2] << 16 | (uint32_t)data[3] << 24);
}
/** Write a 32-bit unsigned little-endian integer. */
void inline WriteLE32(unsigned char *data, uint32_t x) {
data[0] = x;
data[1] = x >> 8;
data[2] = x >> 16;
data[3] = x >> 24;
}
/// Internal RIPEMD-160 implementation.
namespace ripemd160 {
@@ -199,8 +187,7 @@ CRIPEMD160& CRIPEMD160::Write(const unsigned char *data, size_t len) {
void CRIPEMD160::Finalize(unsigned char *hash) {
static const unsigned char pad[64] = {0x80};
unsigned char sizedesc[8];
WriteLE32(sizedesc, bytes << 3);
WriteLE32(sizedesc+4, bytes >> 29);
WriteLE64(sizedesc, bytes << 3);
Write(pad, 1 + ((119 - (bytes % 64)) % 64));
Write(sizedesc, 8);
WriteLE32(hash, s[0]);