std::ostream&
operator<<(std::ostream& os, Digest<Hash>& digest)
{
using namespace CryptoPP;
std::string output;
ConstBufferPtr buffer = digest.computeDigest();
StringSource(buffer->buf(), buffer->size(), true, new HexEncoder(new FileSink(os)));
return os;
}
bool
Validator::verifySignature(const uint8_t* buf, const size_t size, const DigestSha256& sig)
{
try {
ConstBufferPtr buffer = crypto::computeSha256Digest(buf, size);
const Block& sigValue = sig.getValue();
if (buffer != nullptr &&
buffer->size() == sigValue.value_size() &&
buffer->size() == crypto::SHA256_DIGEST_SIZE) {
const uint8_t* p1 = buffer->buf();
const uint8_t* p2 = sigValue.value();
return 0 == memcmp(p1, p2, crypto::SHA256_DIGEST_SIZE);
}
else
return false;
}
catch (const CryptoPP::Exception& e) {
return false;
}
}