void getMd5CString(const char* pSrc, size_t length, std::vector<unsigned char>& res)
{
res.clear();
res.resize(16);
md5_ctxt ctx;
md5_init(&ctx);
md5_loop(&ctx, (BYTE*)pSrc, length);
md5_pad(&ctx);
md5_result(&res[0], &ctx);
}
void
gf_rsync_strong_checksum (char *buf, int32_t len, uint8_t *sum)
{
md_context m;
md5_begin (&m);
md5_update (&m, (unsigned char *) buf, len);
md5_result (&m, (unsigned char *) sum);
return;
}
void md5_hex(char *out, md5_ctx *ctx) {
uint8_t digest[16];
md5_result(digest, ctx);
sprintf(out,
"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
digest[0], digest[1], digest[2], digest[3],
digest[4], digest[5], digest[6], digest[7],
digest[8], digest[9], digest[10], digest[11],
digest[12], digest[13], digest[14], digest[15]);
}
// compute TLSv1 PRF (pseudo random function using HMAC)
void PRF(byte* digest, uint digLen, const byte* secret, uint secLen,
const byte* label, uint labLen, const byte* seed, uint seedLen)
{
uint half = (secLen + 1) / 2;
output_buffer md5_half(half);
output_buffer sha_half(half);
output_buffer labelSeed(labLen + seedLen);
md5_half.write(secret, half);
sha_half.write(secret + half - secLen % 2, half);
labelSeed.write(label, labLen);
labelSeed.write(seed, seedLen);
output_buffer md5_result(digLen);
output_buffer sha_result(digLen);
p_hash(md5_result, md5_half, labelSeed, md5);
p_hash(sha_result, sha_half, labelSeed, sha);
md5_result.set_current(0);
sha_result.set_current(0);
get_xor(digest, digLen, md5_result, sha_result);
}
void Md5::finish(uint8_t digest[], md5_digest_ctxt* context) {
md5_pad(context);
return md5_result(digest, context);
}