public void TestSECCompressedPublicKey()
{
// This key should generate a 0x02 compressed public key
var privateKeyEven = "18e14a7b6a307f426a94f8114701e7c8e774e7f9a47e2c2035db29a206321725".HexToBytes();
// This key should generate a 0x03 compressed public key
var privateKeyOdd = "79FE45D61339181238E49424E905446A35497A8ADEA8B7D5241A1E7F2C95A04D".HexToBytes();
// Use Secp256k1 to generate the key because MSFT version does not support import privateKey with
// no public key.
IECDsa secp256k1 = new Secp256k1DotNet();
var evenKey = secp256k1.CreateKey(privateKeyEven);
var msftecdsa = new MsftECDsaCng();
var evenBtc = secp256k1.GetSECCompressedPublicKey(evenKey.PublicKey);
var evenMsft = msftecdsa.GetSECCompressedPublicKey(evenKey.PublicKey);
Assert.Equal(evenBtc.ToArray(), evenMsft.ToArray());
var oddKey = secp256k1.CreateKey(privateKeyOdd);
var oddBtc = secp256k1.GetSECCompressedPublicKey(oddKey.PublicKey);
var oddMsft = msftecdsa.GetSECCompressedPublicKey(oddKey.PublicKey);
Assert.Equal(oddBtc.ToArray(), oddMsft.ToArray());
}
public void TestP2PKHFromKey()
{
// Example address from https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses
var privateKey = "18e14a7b6a307f426a94f8114701e7c8e774e7f9a47e2c2035db29a206321725".HexToBytes();
IECDsa ecdsa = new Secp256k1DotNet();
var key = ecdsa.CreateKey(privateKey);
string p2pkhAddress = Address.GetP2PKHAddress(key, ecdsa, Bitcoin.Network.MainNet.P2PKHAddressVersion);
p2pkhAddress.Should().BeEquivalentTo("1PMycacnJaSqwwJqjawXBErnLsZ7RkXUAs");
}
public void TestMsftECsaGenP2PKH()
{
var privateKey = "18e14a7b6a307f426a94f8114701e7c8e774e7f9a47e2c2035db29a206321725".HexToBytes();
// Use Secp256k1 to generate the key because MSFT version does support import privateKey with
// no public key.
IECDsa secp256k1 = new Secp256k1DotNet();
var key = secp256k1.CreateKey(privateKey);
var msftecdsa = new MsftECDsaCng();
string p2pkhAddress = Address.GetP2PKHAddress(key, msftecdsa, Bitcoin.Network.MainNet.P2PKHAddressVersion);
p2pkhAddress.Should().BeEquivalentTo("1PMycacnJaSqwwJqjawXBErnLsZ7RkXUAs");
}
public void TestSECUncompressedPublicKey()
{
// This key should generate a 0x02 compressed public key
var privateKey = "18e14a7b6a307f426a94f8114701e7c8e774e7f9a47e2c2035db29a206321725".HexToBytes();
// Use Secp256k1 to generate the key because MSFT version does not support import privateKey with
// no public key.
IECDsa secp256k1 = new Secp256k1DotNet();
var key = secp256k1.CreateKey(privateKey);
var msftecdsa = new MsftECDsaCng();
var btc = secp256k1.GetSECUncompressedPublicKey(key.PublicKey);
var msft = msftecdsa.GetSECUncompressedPublicKey(key.PublicKey);
Assert.Equal(btc.ToArray(), msft.ToArray());
}
public void TestSecp256k1UseSharedContextWithSameKey()
{
using var secp256k1 = new Secp256k1Net.Secp256k1();
using (var context = new Secp256k1DotNetContext(secp256k1))
{
IECDsa signer = new Secp256k1DotNet();
var key = signer.CreateKey();
for (var loop = 0; loop < 1000; loop++)
{
using var rnd = RandomNumberGenerator.Create();
var data = new byte[32];
rnd.GetBytes(data);
var hash = data.Hash();
var signature = signer.SignHash(hash, key, context);
if (!signer.VerifyHash(hash, signature, key, context))
{
throw new Exception();
}
}
}
}