public void should_verify_pizza_transaction_ec()
{
var hexReader = new HexReader();
var secp256K1 = new Secp256k1();
// https://bitcoin.stackexchange.com/questions/32305/how-does-the-ecdsa-verification-algorithm-work-during-transaction
var digest = "692678553d1b85ccf87d4d4443095f276cdf600f2bb7dd44f6effbd7458fd4c2";
var signature =
"30450221009908144ca6539e09512b9295c8a27050d478fbb96f8addbc3d075544dc41328702201aa528be2b907d316d2da068dd9eb1e23243d97e444d59290d2fddf25269ee0e01";
var pubkey =
"042e930f39ba62c6534ee98ed20ca98959d34aa9e057cda01cfd422c6bab3667b76426529382c23f42b9b08d7832d4fee1d6b437a8526e59667ce9c4e9dcebcabb";
var bData = hexReader.ToByteArray(digest);
var bSignature = hexReader.ToByteArray(signature);
var bPubKey = hexReader.ToByteArray(pubkey);
var res = secp256K1.Verify(bSignature.AsSpan(), bData.AsSpan(), bPubKey);
}
public void should_verify_signature()
{
var hexReader = new HexReader();
var secp256K1 = new Secp256k1();
// https://www.blockchain.com/btc/tx/9f3eca62d13c2e7bf104a8539f5768674d551ecc140f3bb9bdaf3f07d6d3f6de
// 15RpkAiu17FiYJmMiTJBvEwNQQdgEr1KvK
// 1HvRorjpF5wyY7To5QhgJDzB3C9nEPcMo1
var data = "9f3eca62d13c2e7bf104a8539f5768674d551ecc140f3bb9bdaf3f07d6d3f6de";
var signature =
"3046022100a7a1bfc118676e8dc1779a6c6dfaece6435ca20e8e2fcf4399300cc930c791e00221009a88d6a51b763fa748254fc487710998c9572bc2f01be06d1a7532c8e38a4c1901";
var pubkey = "03a5cc256133f721c66201b54f18f08053b6fc62f3dfc84c43a3a2d1c87afbe30c";
var bData = hexReader.ToByteArray(data);
var bSignature = hexReader.ToByteArray(signature);
var bPubKey = hexReader.ToByteArray(pubkey);
var output = new Span <byte>(new byte[66]);
var normalize = secp256K1.PublicKeyParse(output, bPubKey);
var res = secp256K1.Verify(bSignature.AsSpan(), bData.AsSpan(), output);
Console.WriteLine(res);
}
public void should_parse_little_endian()
{
// arrange
var hexLittleEndian = "030201";
// act
var res = _hexReader.ToByteArray(hexLittleEndian, Endian.Little);
// assert
Assert.AreEqual(3, res.Length);
Assert.AreEqual(1, res[0]);
Assert.AreEqual(2, res[1]);
Assert.AreEqual(3, res[2]);
}
public void should_validate_script()
{
var hexReader = new HexReader();
var calculator = new Calculator();
var pubkey = "76a9145e4ff47ceb3a51cdf7ddd80afc4acc5a692dac2d88ac";
var scriptkey =
"483045022074f35af390c41ef1f5395d11f6041cf55a6d7dab0acdac8ee746c1f2de7a43b3022100b3dc3d916b557d378268a856b8f9a98b9afaf45442f5c9d726fce343de835a58012102c34538fc933799d972f55752d318c0328ca2bacccd5c7482119ea9da2df70a2f";
var hexScript = scriptkey + pubkey;
var scriptFinal = hexReader.ToByteArray(hexScript);
var res = calculator.Compute(scriptFinal);
}