/// <summary>
/// Create a RadixAddress from a Elliptic Curve Public Key
/// </summary>
/// <param name="magic"></param>
/// <param name="publicKey"></param>
public RadixAddress(int magic, ECPublicKey publicKey)
{
if (publicKey == null)
{
throw new ArgumentNullException(nameof(publicKey));
}
if (publicKey.Length() != 33)
{
throw new ArgumentException($"publickey must be 33 in lenghth but was : {publicKey.Length()}");
}
byte[] addressBytes = new byte[1 + publicKey.Length() + 4];
// Universe magic byte
addressBytes[0] = (byte)(magic & 0xff);
publicKey.CopyPublicKey(addressBytes, 1);
// Checksum
byte[] check = RadixHash.Of(addressBytes, 0, publicKey.Length() + 1).ToByteArray();
Array.Copy(check, 0, addressBytes, publicKey.Length() + 1, 4);
//_addressBase58 = Base58.ToBase58(addressBytes);
_addressBase58 = Base58Encoding.Encode(addressBytes);
_pubKey = publicKey;
}
public virtual byte[] CalculateMAC(byte[] salt, byte[] iv, ECPublicKey publicKey, byte[] encrypted)
{
var hmac = new HMac(new Sha256Digest());
hmac.Init(new KeyParameter(salt));
byte[] result = new byte[hmac.GetMacSize()];
using (var stream = new MemoryStream())
{
stream.Write(iv, 0, iv.Length);
stream.Write(publicKey.Base64Array, 0, publicKey.Length());
stream.Write(encrypted, 0, encrypted.Length);
var msg = stream.ToArray();
hmac.BlockUpdate(msg, 0, msg.Length);
}
hmac.DoFinal(result, 0);
return(result);
}