Method verifyKey

CudaKeySearchDevice/CudaKeySearchDevice.cpp:269–299

Verify a private key produces the public key and hash

// Verify a private key produces the public key and hash
bool CudaKeySearchDevice::verifyKey(const secp256k1::uint256 &privateKey, const secp256k1::ecpoint &publicKey, const unsigned int hash[5], bool compressed)
{
    secp256k1::ecpoint g = secp256k1::G();

    secp256k1::ecpoint p = secp256k1::multiplyPoint(privateKey, g);

    if(!(p == publicKey)) {
        return false;
    }

    unsigned int xWords[8];
    unsigned int yWords[8];

    p.x.exportWords(xWords, 8, secp256k1::uint256::BigEndian);
    p.y.exportWords(yWords, 8, secp256k1::uint256::BigEndian);

    unsigned int digest[5];
    if(compressed) {
        Hash::hashPublicKeyCompressed(xWords, yWords, digest);
    } else {
        Hash::hashPublicKey(xWords, yWords, digest);
    }

    for(int i = 0; i < 5; i++) {
        if(digest[i] != hash[i]) {
            return false;
        }
    }

    return true;
}

size_t CudaKeySearchDevice::getResults(std::vector<KeySearchResult> &resultsOut)
{