// Copyright (C) 2024 Vaughn Nugent
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see .
using System;
namespace VNLib.Utils.Cryptography.Noscrypt.Encryption
{
///
/// Cipher specific flags that control the behavior of a cipher
/// instance
///
[Flags]
public enum NoscryptCipherFlags : uint
{
///
/// Puts the cipher into encryption mode
///
ModeEncryption = 0x00u,
///
/// Puts the cipher into decryption mode
///
ModeDecryption = 0x01u,
///
/// Forces all internal memory to be freed when
/// the cipher is freed
///
ZeroOnFree = 0x02u,
///
/// Disables mac verification during decryption operations,
/// by default nip44 macs are verified before the decryption
/// operation.
///
MacNoVerify = 0x04u,
///
/// Allows allocated cipher instances to be reused multiple
/// times. Otherwise the cipher may only be used once after
/// allocation.
///
Reusable = 0x08u,
EncryptDefault = ModeEncryption | Reusable | ZeroOnFree,
DecryptDefault = ModeDecryption | Reusable | ZeroOnFree
}
}