/*
*
* Next Private Key = hash( current public key + seed + currentIndex )
*/
private Wallet next(byte[] seed)
{
byte[] currentIndexByte = BitConverter.GetBytes(currentIndex);
byte[] beforehash = new byte[keyPair.PublicKey.Length + seed.Length + currentIndexByte.Length];
System.Buffer.BlockCopy(keyPair.PublicKey, 0, beforehash, 0, keyPair.PublicKey.Length);
System.Buffer.BlockCopy(seed, 0, beforehash, keyPair.PublicKey.Length, seed.Length);
System.Buffer.BlockCopy(currentIndexByte, 0, beforehash, keyPair.PublicKey.Length + seed.Length, currentIndexByte.Length);
byte[] nextPrivKey = Hash.ComputeDoubleSHA256(beforehash);
byte[] nextPubKeyByte;
EccService.GenerateKeyFromPrivateKey(nextPrivKey, out nextPubKeyByte);
KeyPair nextKeyPair = new KeyPair
{
PrivateKey = nextPrivKey,
PublicKey = nextPubKeyByte,
Address = BlockchainUtil.ToAddress(nextPubKeyByte),
};
return(new Wallet(nextKeyPair, currentIndex + 1));
}
