+++ /dev/null
-// see copyright notice in sha1.h
-#include "sha1.h"
-
-void SHA1::addBytes(const uint8_t* input, size_t length)
-{
- while (length--) {
- m_buffer[m_cursor++] = *input++;
- ++m_totalBytes;
- if (m_cursor == 64) processBlock();
- }
-}
-
-void SHA1::computeHash(uint8_t *digest)
-{
- finalize();
- memset(digest, 0, 20);
- for (size_t i = 0; i < 5; ++i) {
- // Treat hashValue as a big-endian value.
- uint32_t hashValue = m_hash[i];
- for (int j = 0; j < 4; ++j) {
- digest[4*i + (3-j)] = hashValue & 0xFF;
- hashValue >>= 8;
- }
- }
-
- reset();
-}
-
-void SHA1::finalize()
-{
- m_buffer[m_cursor++] = 0x80;
- if (m_cursor > 56) {
- while (m_cursor < 64) m_buffer[m_cursor++] = 0x00;
- processBlock();
- }
-
- for (size_t i = m_cursor; i < 56; ++i)
- m_buffer[i] = 0x00;
-
- uint64_t bits = m_totalBytes*8;
- for (int i = 0; i < 8; ++i) {
- m_buffer[56 + (7-i)] = bits & 0xFF;
- bits >>= 8;
- }
- m_cursor = 64;
- processBlock();
-}
-
-void SHA1::processBlock()
-{
- uint32_t w[80] = { 0 };
- for (int t = 0; t < 16; ++t)
- w[t] = (m_buffer[t*4] << 24) |
- (m_buffer[t*4 + 1] << 16) |
- (m_buffer[t*4 + 2] << 8) |
- (m_buffer[t*4 + 3]);
- for (int t = 16; t < 80; ++t)
- w[t] = rotateLeft(1, w[t-3] ^ w[t-8] ^ w[t-14] ^ w[t-16]);
-
- uint32_t a = m_hash[0], b = m_hash[1];
- uint32_t c = m_hash[2], d = m_hash[3];
- uint32_t e = m_hash[4];
-
- for (int t = 0; t < 80; ++t) {
- uint32_t temp = rotateLeft(5, a) + f(t, b, c, d) + e + w[t] + k(t);
- e = d; d = c;
- c = rotateLeft(30, b);
- b = a; a = temp;
- }
-
- m_hash[0] += a; m_hash[1] += b;
- m_hash[2] += c; m_hash[3] += d;
- m_hash[4] += e;
-
- m_cursor = 0;
-}
-
-void SHA1::reset()
-{
- m_cursor = 0;
- m_totalBytes = 0;
- m_hash[0] = 0x67452301; m_hash[1] = 0xefcdab89;
- m_hash[2] = 0x98badcfe; m_hash[3] = 0x10325476;
- m_hash[4] = 0xc3d2e1f0;
- memset(m_buffer, 0, sizeof(m_buffer));
-}
-
-#ifdef TEST
-static void expectSHA1(const char *input, int repeat, const char *expected)
-{
- SHA1 sha1;
- const uint8_t *inp = (const uint8_t *)input;
- int len = strlen(input);
- for (int i = 0; i < repeat; ++i) sha1.addBytes(inp, len);
- uint8_t digest[20]; sha1.computeHash(digest);
- char actual[64], *buffer = actual;
- for (size_t i = 0; i < 20; ++i) {
- snprintf(buffer, 3, "%02X", digest[i]);
- buffer += 2;
- }
- if( !strcmp(actual, expected) ) return;
- printf("input: %s, repeat: %d, actual: %s, expected: %s\n",
- input, repeat, actual, expected);
-}
-
-int main(int ac, char **av)
-{
- // Examples taken from sample code in RFC 3174.
- expectSHA1("abc", 1, "A9993E364706816ABA3E25717850C26C9CD0D89D");
- expectSHA1("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
- 1, "84983E441C3BD26EBAAE4AA1F95129E5E54670F1");
- expectSHA1("a",
- 1000000, "34AA973CD4C4DAA4F61EEB2BDBAD27316534016F");
- expectSHA1("0123456701234567012345670123456701234567012345670123456701234567",
- 10, "DEA356A2CDDD90C7A7ECEDC5EBB563934F460452");
- return 0;
-}
-#endif
-