public void SetKey(ExtPrivateKey privateKey)
{
var prefix = RootService.Network.ExtSecretKey;
var data = new byte[prefix.Length + ExtKey.Bip32KeySize];
prefix.CopyTo(data.Slice(0, prefix.Length));
privateKey.Encode(data.Slice(prefix.Length));
SetData(data, prefix.Length);
}
public ExtPrivateKey GetKey()
{
var privateKey = new ExtPrivateKey();
if (KeyData.Length == ExtKey.Bip32KeySize)
{
privateKey.Decode(KeyData);
}
return(privateKey);
}
public static ExtPublicKey FromPrivateKey(ExtPrivateKey privateKey)
{
return(new ExtPublicKey
{
Depth = privateKey.Depth,
Fingerprint = privateKey.Fingerprint,
Child = privateKey.IndexWithHardened,
ChainCode = privateKey.ChainCode,
PublicKey = privateKey.PrivateKey.CreatePublicKey()
});
}
/// <summary>
/// Derives a child hierarchical deterministic public key specified by a key path.
/// </summary>
/// <param name="index"></param>
/// <param name="hardened"></param>
/// <returns></returns>
protected override ExtKey DeriveBase(int index, bool hardened)
{
Trace.Assert(index >= 0);
var cek = new ExtPrivateKey {
Depth = (byte)(Depth + 1),
Child = (uint)index | (hardened ? HardenedBit : 0),
Fingerprint = BitConverter.ToInt32(PrivateKey.CreatePublicKey().GetId().Span.Slice(0, 4))
};
bool ok;
(ok, cek.PrivateKey, cek.ChainCode) = PrivateKey.Derive(cek.Child, ChainCode);
return(ok ? cek : null);
}
public Base58ExtPrivateKey(ExtPrivateKey privateKey)
{
SetKey(privateKey);
}