Method TestData

src/test/miniscript_tests.cpp:51–103

    std::map<std::vector<unsigned char>, std::vector<unsigned char>> hash160_preimages;

    TestData()
    {
        // All our signatures sign (and are required to sign) this constant message.
        constexpr uint256 MESSAGE_HASH{"0000000000000000f5cd94e18b6fe77dd7aca9e35c2b0c9cbd86356c80a71065"};
        // We don't pass additional randomness when creating a schnorr signature.
        const auto EMPTY_AUX{uint256::ZERO};

        // We generate 255 public keys and 255 hashes of each type.
        for (int i = 1; i <= 255; ++i) {
            // This 32-byte array functions as both private key data and hash preimage (31 zero bytes plus any nonzero byte).
            unsigned char keydata[32] = {0};
            keydata[31] = i;

            // Compute CPubkey and CKeyID
            CKey key;
            key.Set(keydata, keydata + 32, true);
            CPubKey pubkey = key.GetPubKey();
            CKeyID keyid = pubkey.GetID();
            pubkeys.push_back(pubkey);
            pkhashes.emplace(pubkey, keyid);
            pkmap.emplace(keyid, pubkey);
            XOnlyPubKey xonly_pubkey{pubkey};
            uint160 xonly_hash{Hash160(xonly_pubkey)};
            xonly_pkhashes.emplace(xonly_pubkey, xonly_hash);
            pkmap.emplace(xonly_hash, pubkey);

            // Compute ECDSA signatures on MESSAGE_HASH with the private keys.
            std::vector<unsigned char> sig, schnorr_sig(64);
            BOOST_CHECK(key.Sign(MESSAGE_HASH, sig));
            sig.push_back(1); // sighash byte
            signatures.emplace(pubkey, sig);
            BOOST_CHECK(key.SignSchnorr(MESSAGE_HASH, schnorr_sig, nullptr, EMPTY_AUX));
            schnorr_sig.push_back(1); // Maximally sized Schnorr sigs have a sighash byte.
            schnorr_signatures.emplace(XOnlyPubKey{pubkey}, schnorr_sig);

            // Compute various hashes
            std::vector<unsigned char> hash;
            hash.resize(32);
            CSHA256().Write(keydata, 32).Finalize(hash.data());
            sha256.push_back(hash);
            sha256_preimages[hash] = std::vector<unsigned char>(keydata, keydata + 32);
            CHash256().Write(keydata).Finalize(hash);
            hash256.push_back(hash);
            hash256_preimages[hash] = std::vector<unsigned char>(keydata, keydata + 32);
            hash.resize(20);
            CRIPEMD160().Write(keydata, 32).Finalize(hash.data());
            ripemd160.push_back(hash);
            ripemd160_preimages[hash] = std::vector<unsigned char>(keydata, keydata + 32);
            CHash160().Write(keydata).Finalize(hash);
            hash160.push_back(hash);
            hash160_preimages[hash] = std::vector<unsigned char>(keydata, keydata + 32);
        }
    }
};

//! Global TestData object