54 lines
1.9 KiB
C#
54 lines
1.9 KiB
C#
using System;
|
|
using Sodium;
|
|
using System.IO;
|
|
using System.Collections.Generic;
|
|
|
|
/*
|
|
RinseOff - Encrypt or load data with a key file to help with secure erasure
|
|
Copyright (C) <2020> Kevin Froman
|
|
|
|
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 <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
namespace rinseoff
|
|
{
|
|
public class RinseOff
|
|
{
|
|
public static void generateKeyFile(string path){
|
|
var key = Sodium.SodiumCore.GetRandomBytes(32);
|
|
File.WriteAllBytes(path, key);
|
|
}
|
|
|
|
public static byte[] encrypt_secret_bytes(byte[] secret, byte[] key){
|
|
byte[] nonce = Sodium.SecretBox.GenerateNonce();
|
|
var ciphertext = SecretBox.Create(secret, nonce, key);
|
|
var combined = new List<byte>();
|
|
combined.AddRange(nonce);
|
|
combined.AddRange(ciphertext);
|
|
return combined.ToArray();
|
|
}
|
|
|
|
public static byte[] decrypt_secret_bytes(byte[] ciphertext, byte[] key){
|
|
var ciphertextList = new List<byte>();
|
|
ciphertextList.AddRange(ciphertext);
|
|
return Sodium.SecretBox.Open(
|
|
ciphertextList.GetRange(24, ciphertextList.Count - 24).ToArray(),
|
|
ciphertextList.GetRange(0, 24).ToArray(),
|
|
key);
|
|
}
|
|
|
|
|
|
}
|
|
}
|