/// <summary>
/// Returns base58-encoded string representation of this instance.
/// </summary>
/// <exception cref="ObjectDisposedException"/>
/// <exception cref="ArgumentNullException"/>
/// <param name="xType">Extended key type to return</param>
/// <returns>Base58-encoded extended key</returns>
public string ToBase58(XType xType)
{
if (isDisposed)
{
throw new ObjectDisposedException(nameof(BIP0032), "Instance was disposed.");
}
bool isPub = IsPublic(xType);
if (!isPub && PrvKey is null)
{
throw new ArgumentNullException(nameof(PrvKey), "Can not get extended private key from public key.");
}
FastStream stream = new FastStream(ExtendedKeyLength);
stream.WriteBigEndian((uint)xType);
stream.Write(ExtendedKeyDepth);
stream.Write(ParentFingerPrint);
stream.Write(ChildNumber);
stream.Write(ChainCode);
if (isPub)
{
stream.Write(PubKey.ToByteArray(true));
}
else
{
stream.Write((byte)0);
stream.Write(PrvKey.ToBytes());
}
return(Base58.EncodeWithChecksum(stream.ToByteArray()));
}
public string DataAsJson()
{
var data = new JObject {
{ "version", Version },
{ "watch_addresses", new JArray() },
{ "public_addresses", new JArray() },
{ "key_hashes", KeyHashes },
{ "encrypted", new JObject {
{ "iv", Base58.EncodeWithChecksum(IV) },
{ "salt", Base58.EncodeWithChecksum(Salt) },
{ "data", Base58.EncodeWithChecksum(EncryptedData) }
} }
};
foreach (var address in WatchAddresses)
{
var addressJson = new JObject {
{ "addr", address.Address.ToString() }
};
if (!String.IsNullOrWhiteSpace(address.Label))
{
addressJson.Add("label", address.Label);
}
data["watch_addresses"].Value <JArray>().Add(addressJson);
}
foreach (var address in PublicAddresses)
{
var addressJson = new JObject {
{ "addr", address.Address.ToString() }
};
if (!String.IsNullOrWhiteSpace(address.Label))
{
addressJson.Add("label", address.Label);
}
data["public_addresses"].Value <JArray>().Add(addressJson);
}
return(JsonConvert.SerializeObject(data));
}
/// <summary>
/// Returns the address that corresponds to the public part of this ECKey. Note that an address is derived from
/// the RIPEMD-160 hash of the public key and is not the public key itself (which is too large to be convenient).
/// </summary>
public Address ToAddress()
{
byte[] hashedPubKey = Digest.Hash <RIPEMD160, SHA256>(PubKey);
return(new Address(Base58.EncodeWithChecksum(ArrayHelpers.ConcatArrays(new byte[] { 0x00 }, hashedPubKey))));
}
// public byte[] ToAsn1() {
// using(var baos = new MemoryStream(400)) {
// using(var encoder = new Asn1OutputStream(baos)) {
// // ASN1_SEQUENCE(EC_PRIVATEKEY) = {
// // ASN1_SIMPLE(EC_PRIVATEKEY, version, LONG),
// // ASN1_SIMPLE(EC_PRIVATEKEY, privateKey, ASN1_OCTET_STRING),
// // ASN1_EXP_OPT(EC_PRIVATEKEY, parameters, ECPKPARAMETERS, 0),
// // ASN1_EXP_OPT(EC_PRIVATEKEY, publicKey, ASN1_BIT_STRING, 1)
// // } ASN1_SEQUENCE_END(EC_PRIVATEKEY)
// var seq = new DerSequenceGenerator(encoder);
// seq.AddObject(new DerInteger(1)); // version
// seq.AddObject(new DerOctetString(_priv.ToByteArray()));
// seq.AddObject(new DerTaggedObject(0, SecNamedCurves.GetByName("secp256k1").ToAsn1Object()));
// seq.AddObject(new DerTaggedObject(1, new DerBitString(PubKey)));
// seq.Close();
// }
// return baos.ToArray();
// }
// }
public string ToWalletImportFormat()
{
return(Base58.EncodeWithChecksum(ArrayHelpers.ConcatArrays(new byte[] { 0x80 }, _priv.ToByteArrayUnsigned())));
}
public void EncodeBitcoinAddress()
{
var actualText = Base58.EncodeWithChecksum(addressBytes);
Assert.AreEqual(addressText, actualText);
}
public void EncodeWithChecksum_ExceptionTest()
{
Assert.Throws <ArgumentNullException>(() => Base58.EncodeWithChecksum(null));
}
public void EncodeWithChecksumTest(string expected, byte[] data)
{
string actual = Base58.EncodeWithChecksum(data);
Assert.Equal(expected, actual);
}
/// <summary>
/// Initializes a new instance of <see cref="MiniPrivateKey"/> with a randomly generated key
/// using the given <see cref="IRandomNumberGenerator"/> instance.
/// </summary>
/// <exception cref="ArgumentNullException"/>
/// <param name="rng">Random number generator to use</param>
public MiniPrivateKey(IRandomNumberGenerator rng)
{
if (rng is null)
{
throw new ArgumentNullException("Random number generator can not be null.");
}
// This is the way Casascius does it.
// https://github.com/casascius/Bitcoin-Address-Utility/blob/e493d51e4a1da7536fc8e8aea38eeaee38abf4cb/Model/MiniKeyPair.cs#L54-L80
// Create a random 256 bit key. It will only be used for its characters
byte[] tempBa = new byte[32 + 1];
rng.GetBytes(tempBa);
tempBa[0] = GetWifFirstByte(NetworkType.MainNet);
string b58 = 'S' + Base58.EncodeWithChecksum(tempBa).Replace("1", "").Substring(4, 29);
char[] chars = b58.ToCharArray();
char[] charstest = (b58 + "?").ToCharArray();
while (hash.ComputeHash(Encoding.UTF8.GetBytes(charstest))[0] != 0)
{
// As long as key doesn't pass typo check, increment it.
for (int i = chars.Length - 1; i >= 0; i--)
{
char c = chars[i];
if (c == '9')
{
charstest[i] = chars[i] = 'A';
break;
}
else if (c == 'H')
{
charstest[i] = chars[i] = 'J';
break;
}
else if (c == 'N')
{
charstest[i] = chars[i] = 'P';
break;
}
else if (c == 'Z')
{
charstest[i] = chars[i] = 'a';
break;
}
else if (c == 'k')
{
charstest[i] = chars[i] = 'm';
break;
}
else if (c == 'z')
{
charstest[i] = chars[i] = '2';
// No break - let loop increment prior character.
}
else
{
charstest[i] = chars[i] = ++c;
break;
}
}
}
smallBytes = Encoding.UTF8.GetBytes(chars);
SetBytes(hash.ComputeHash(smallBytes));
}
