public void BigIntegerToBytesTest()
{
// Uncompressed Public Key
var xValStr = "50863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B2352";
var yValStr = "2CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6";
var expected = "0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6";
var xVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(xValStr);
var yVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(yValStr);
var bytes = new byte[65]; // type byte + 32 bytes for X + 32 bytes for Y
bytes[0] = 0x04;
xVal.PositiveValToBigEndianBytes(bytes, 1, 32);
yVal.PositiveValToBigEndianBytes(bytes, 33, 32);
var hexStr = HexUtilities.BytesToHexString(bytes, false);
Assert.AreEqual(expected, hexStr);
// Arbitrary data to arbitrary position in buffer
var str1 = "010203040506";
var str2 = "ABCDEF";
expected = "010203040506000000ABCDEF";
var val1 = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(str1);
var val2 = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(str2);
bytes = new byte[12];
val1.PositiveValToBigEndianBytes(bytes, 0, 6);
val2.PositiveValToBigEndianBytes(bytes, 9, 3);
hexStr = HexUtilities.BytesToHexString(bytes, false);
Assert.AreEqual(expected, hexStr);
// Arbitrary data to arbitrary position in buffer, right aligned
str1 = "010203040506";
str2 = "ABCDEF";
expected = "010203040506000000ABCDEF";
val1 = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(str1);
val2 = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(str2);
bytes = new byte[12];
val1.PositiveValToBigEndianBytes(bytes, 0, 6);
val2.PositiveValToBigEndianBytes(bytes, 6, 6);
hexStr = HexUtilities.BytesToHexString(bytes, false);
Assert.AreEqual(expected, hexStr);
}
public void GenerateWifStringTest()
{
// Compressed
var prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("1E99423A4ED27608A15A2616A2B0E9E52CED330AC530EDCC32C8FFC6A526AEDD");
var expected = "KxFC1jmwwCoACiCAWZ3eXa96mBM6tb3TYzGmf6YwgdGWZgawvrtJ";
var prvKey = new PrivateKey(prvKeyVal, false, true);
var wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("1E99423A4ED27608A15A2616A2B0E9E52CED330AC530EDCC32C8FFC6A526AEDD");
expected = "L5oLkpV3aqBJ4BgssVAsax1iRa77G5CVYnv9adQ6Z87te7TyUdSC";
prvKey = new PrivateKey(BigInteger.Pow(2, 256) - BigInteger.Pow(2, 199), false, true);
wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("1cca23de92fd1862fb5b76e5f4f50eb082165e5191e116c18ed1a6b24be6a53f");
expected = "cNYfWuhDpbNM1JWc3c6JTrtrFVxU4AGhUKgw5f93NP2QaBqmxKkg";
prvKey = new PrivateKey(prvKeyVal, true, true);
wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
// Uncompressed
prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("1E99423A4ED27608A15A2616A2B0E9E52CED330AC530EDCC32C8FFC6A526AEDD");
expected = "5J3mBbAH58CpQ3Y5RNJpUKPE62SQ5tfcvU2JpbnkeyhfsYB1Jcn";
prvKey = new PrivateKey(prvKeyVal, false, false);
wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D");
expected = "5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ";
prvKey = new PrivateKey(prvKeyVal, false, false);
wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("0dba685b4511dbd3d368e5c4358a1277de9486447af7b3604a69b8d9d8b7889d");
expected = "5HvLFPDVgFZRK9cd4C5jcWki5Skz6fmKqi1GQJf5ZoMofid2Dty";
prvKey = new PrivateKey(prvKeyVal, false, false);
wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
expected = "93XfLeifX7Jx7n7ELGMAf1SUR6f9kgQs8Xke8WStMwUtrDucMzn";
prvKey = new PrivateKey(BigInteger.Pow(2, 256) - BigInteger.Pow(2, 201), true, false);
wifString = prvKey.GetWifString();
Assert.AreEqual(expected, wifString);
}
public void TestVerify()
{
var x = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("887387e452b8eacc4acfde10d9aaf7f6d9a0f975aabb10d006e4da568744d06c");
var y = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("61de6d95231cd89026e286df3b6ae4a894a3378e393e93a0f45b666329a0ae34");
var p = new PublicKey(x, y);
var z = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("ec208baa0fc1c19f708a9ca96fdeff3ac3f230bb4a7ba4aede4942ad003c0f60");
var r = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("ac8d1c87e51d0d441be8b3dd5b05c8795b48875dffe00b7ffcfac23010d3a395");
var s = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("68342ceff8935ededd102dd876ffd6ba72d6a427a3edb13d26eb0781cb423c4");
var signature = new Signature(r, s);
var valid = p.Verify(z, signature);
Assert.IsTrue(valid);
z = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("7c076ff316692a3d7eb3c3bb0f8b1488cf72e1afcd929e29307032997a838a3d");
r = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("eff69ef2b1bd93a66ed5219add4fb51e11a840f404876325a1e8ffe0529a2c");
s = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString("c7207fee197d27c618aea621406f6bf5ef6fca38681d82b2f06fddbdce6feab6");
signature = new Signature(r, s);
valid = p.Verify(z, signature);
Assert.IsTrue(valid);
}
public void AddressTest()
{
// Uncompressed Public Key
var ecdsaPrivateKey = "18E14A7B6A307F426A94F8114701E7C8E774E7F9A47E2C2035DB29A206321725";
var expectedPubXVal = "50863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B2352";
var expectedPubYVal = "2CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6";
var expectedPubKey = "0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6";
var expectedAddress = "16UwLL9Risc3QfPqBUvKofHmBQ7wMtjvM";
var prvKeyVal = BigIntegerUtilities.CreateFromUnsignedBigEndianHexString(ecdsaPrivateKey);
var prvKey = new PrivateKey(prvKeyVal, false, false);
var pubKey = prvKey.GetPublicKey();
Assert.AreEqual(expectedPubXVal, pubKey.X.PositiveValToHexString(false));
Assert.AreEqual(expectedPubYVal, pubKey.Y.PositiveValToHexString(false));
var pubKeyBytes = pubKey.GetPublicKeyBytes();
var pubKeyString = HexUtilities.BytesToHexString(pubKeyBytes, false);
Assert.AreEqual(expectedPubKey, pubKeyString);
var address = pubKey.GetAddress();
Assert.AreEqual(expectedAddress, address);
}