protected byte[] Decrypt(byte[] encrypted, byte[] iv, byte[] streamsBuffer)
{
var decrypted = DeobUtils.AesDecrypt(encrypted, DeobUtils.Sha256Sum(streamsBuffer), iv);
var sha = SHA512.Create();
var hash = sha.ComputeHash(streamsBuffer);
for (int i = 0; i < decrypted.Length; i += 64)
{
int j;
for (j = 0; j < 64 && i + j < decrypted.Length; j++)
{
decrypted[i + j] ^= (byte)(hash[j] ^ key6);
}
hash = sha.ComputeHash(decrypted, i, j);
}
return(decrypted);
}