/// <summary>
/// Generates the key pair.
/// </summary>
/// <returns>The key pair.</returns>
/// <param name="brainKey">Brain key.</param>
public KeyPair GenerateKeyPair(string brainKey = null)
{
string brain_key = brainKey;
if (brain_key == null)
{
brain_key = String.Join(" ", bip39.GenerateMnemonic(160, BIP39Wordlist.English).Split('\r').AsEnumerable <string>().Select(a =>
{
return(a.Trim());
}).ToArray()).Trim();
}
byte[] private_key_bytes = Hash.SHA256(brain_key + " " + 0);
Crypto.PrivateKey privateKey = Crypto.PrivateKey.FromBytes(private_key_bytes);
return(new KeyPair()
{
BrainKey = brain_key,
PrivateKey = privateKey.ToWif(),
PublicKey = privateKey.GetPublicKey().ToString()
});
}
/// <summary>
/// ECDSA with secp256k1
/// </summary>
/// <param name="message">message</param>
/// <param name="privateKey">Private key</param>
/// <returns></returns>
public static Signature SignBytes(byte[] message, PrivateKey privateKey)
{
var sign = Secp256K1Manager.SignCompressedCompact(Sha256Manager.GetHash(message), privateKey.D.ToByteArrayUnsigned(true));
return(Signature.FromBytes(sign));
}
/// <summary>
/// Sign a string
/// </summary>
/// <returns>The string.</returns>
/// <param name="message">Message.</param>
/// <param name="privateKey">Private key.</param>
public static Signature SignString(string message, PrivateKey privateKey)
{
return(SignBytes(Encoding.UTF8.GetBytes(message), privateKey));
}