private static string GenerateWif(Key key, string password, Network network)
{
byte[] vch = key.ToBytes();
//Compute the Bitcoin address (ASCII),
byte[] addressBytes = Encoders.ASCII.DecodeData(key.PubKey.GetAddress(network).ToString());
// and take the first four bytes of SHA256(SHA256()) of it. Let's call this "addresshash".
byte[] addresshash = Hashes.Hash256(addressBytes).ToBytes().SafeSubarray(0, 4);
byte[] derived = SCrypt.BitcoinComputeDerivedKey(Encoding.UTF8.GetBytes(password), addresshash);
byte[] encrypted = EncryptKey(vch, derived);
byte[] version = network.GetVersionBytes(Base58Type.ENCRYPTED_SECRET_KEY_NO_EC, true);
byte flagByte = 0;
flagByte |= 0x0C0;
flagByte |= (key.IsCompressed ? (byte)0x20 : (byte)0x00);
byte[] bytes = version
.Concat(new[] { flagByte })
.Concat(addresshash)
.Concat(encrypted).ToArray();
return(Encoders.Base58Check.EncodeData(bytes));
}
private static string GenerateWif(Key key, string password, Network network)
{
var vch = key.ToBytes();
//Compute the Bitcoin address (ASCII),
var addressBytes = Encoders.ASCII.DecodeData(key.PubKey.GetAddress(network).ToWif());
// and take the first four bytes of SHA256(SHA256()) of it. Let's call this "addresshash".
var addresshash = Hashes.Hash256(addressBytes).ToBytes().SafeSubarray(0, 4);
var derived = SCrypt.BitcoinComputeDerivedKey(Encoding.UTF8.GetBytes(password), addresshash);
var encrypted = EncryptKey(vch, derived);
var version = network.GetVersionBytes(Base58Type.ENCRYPTED_SECRET_KEY_NO_EC);
byte flagByte = 0;
flagByte |= 0x0C0;
flagByte |= (key.IsCompressed ? (byte)0x20 : (byte)0x00);
var bytes = version
.Concat(new[] { flagByte })
.Concat(addresshash)
.Concat(encrypted).ToArray();
return Encoders.Base58Check.EncodeData(bytes);
}
private static byte[] ToBytes(Key key)
{
var keyBytes = key.ToBytes();
if(!key.IsCompressed)
return keyBytes;
else
return keyBytes.Concat(new byte[] { 0x01 }).ToArray();
}
internal static byte[] GetStealthSharedSecret(Key priv, PubKey pub)
{
X9ECParameters curve = ECKey.Secp256k1;
ECPoint pubec = curve.Curve.DecodePoint(pub.ToBytes());
ECPoint p = pubec.Multiply(new BigInteger(1, priv.ToBytes()));
byte[] pBytes = new PubKey(p.GetEncoded()).Compress().ToBytes();
byte[] hash = Hashes.SHA256(pBytes);
return(hash);
}
internal static byte[] GetStealthSharedSecret(Key priv, PubKey pub)
{
var curve = ECKey.CreateCurve();
var pubec = curve.Curve.DecodePoint(pub.ToBytes());
var p = pubec.Multiply(new BigInteger(1, priv.ToBytes()));
var pBytes = new PubKey(p.GetEncoded()).Compress().ToBytes();
var hash = Hashes.SHA256(pBytes);
return(hash);
}
static byte[] ToBytes(Key key)
{
var keyBytes = key.ToBytes();
if (!key.IsCompressed)
{
return(keyBytes);
}
return(keyBytes.Concat(new byte[] { 0x01 }).ToArray());
}
public NodeContext(IRandomNumberGenerator randomNumberGenerator)
{
_randomNumberGenerator = randomNumberGenerator;
byte[] prv = new byte[32];
_randomNumberGenerator.GetBytes(prv.AsSpan());
var k = new NBitcoin.Key(prv); //TODO Dan
// random data
PrivateKey = k.ToBytes();
LocalPubKey = k.PubKey.ToHex();
}
public byte[] ToBytes()
{
var b = new byte[Length];
int i = 0;
b[i++] = nDepth;
Array.Copy(parentFingerprint.ToBytes(), 0, b, i, 4);
i += 4;
Array.Copy(Utils.ToBytes(nChild, false), 0, b, i, 4);
i += 4;
Array.Copy(vchChainCode, 0, b, i, 32);
i += 32;
b[i++] = 0;
Array.Copy(key.ToBytes(), 0, b, i, 32);
return(b);
}
internal static byte[] GetStealthSharedSecret(Key priv, PubKey pub)
{
if (priv == null)
{
throw new ArgumentNullException(nameof(priv));
}
if (pub == null)
{
throw new ArgumentNullException(nameof(pub));
}
#if HAS_SPAN
Span <byte> tmp = stackalloc byte[33];
pub._ECKey.GetSharedPubkey(priv._ECKey).WriteToSpan(true, tmp, out _);
return(Hashes.SHA256(tmp));
#else
var curve = ECKey.Secp256k1;
var pubec = curve.Curve.DecodePoint(pub.ToBytes());
var p = pubec.Multiply(new BigInteger(1, priv.ToBytes()));
var pBytes = new PubKey(p.GetEncoded()).Compress().ToBytes();
var hash = Hashes.SHA256(pBytes);
return(hash);
#endif
}
internal static byte[] GetStealthSharedSecret(Key priv, PubKey pub)
{
var curve = ECKey.CreateCurve();
var pubec = curve.Curve.DecodePoint(pub.ToBytes());
var p = pubec.Multiply(new BigInteger(1, priv.ToBytes()));
var pBytes = new PubKey(p.GetEncoded()).Compress().ToBytes();
var hash = Hashes.SHA256(pBytes);
return hash;
}