Winify – Rev 30
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///////////////////////////////////////////////////////////////////////////
// Copyright (C) Wizardry and Steamworks 2016 - License: GNU GPLv3 //
// Please see: http://www.gnu.org/licenses/gpl.html for legal details, //
// rights of fair usage, the disclaimer and warranty conditions. //
///////////////////////////////////////////////////////////////////////////
using System.IO;
using System.Linq;
using System.Security.Cryptography;
namespace Winify.Utilities
{
public static class AES
{
#region Static Fields and Constants
private const int AESKeySaltBytes = 16;
private static readonly RNGCryptoServiceProvider Rng = new RNGCryptoServiceProvider();
#endregion
#region Public Methods
///////////////////////////////////////////////////////////////////////////
// Copyright (C) Wizardry and Steamworks 2016 - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
public static byte[] Encrypt(byte[] plain, string password)
{
using (var rijndael = Rijndael.Create())
{
rijndael.BlockSize = 128;
rijndael.Mode = CipherMode.CBC;
rijndael.KeySize = 256;
rijndael.Padding = PaddingMode.PKCS7;
var salt = new byte[AESKeySaltBytes];
Rng.GetBytes(salt);
var pdb = new Rfc2898DeriveBytes(password, salt, 1000);
rijndael.Key = pdb.GetBytes(rijndael.KeySize / 8);
rijndael.IV = pdb.GetBytes(rijndael.BlockSize / 8);
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream =
new CryptoStream(memoryStream, rijndael.CreateEncryptor(), CryptoStreamMode.Write))
{
cryptoStream.Write(plain, 0, plain.Length);
cryptoStream.Close();
var ciphertext = memoryStream.ToArray();
return salt.Concat(ciphertext)
.ToArray();
}
}
}
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) Wizardry and Steamworks 2016 - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
public static byte[] Decrypt(byte[] cipher, string password)
{
using (var rijndael = Rijndael.Create())
{
rijndael.BlockSize = 128;
rijndael.Mode = CipherMode.CBC;
rijndael.KeySize = 256;
rijndael.Padding = PaddingMode.PKCS7;
var salt = cipher.Take(16)
.ToArray();
var ciphertext = cipher.Skip(16)
.ToArray();
var pdb = new Rfc2898DeriveBytes(password, salt, 1000);
rijndael.Key = pdb.GetBytes(rijndael.KeySize / 8);
rijndael.IV = pdb.GetBytes(rijndael.BlockSize / 8);
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream =
new CryptoStream(memoryStream, rijndael.CreateDecryptor(), CryptoStreamMode.Write))
{
cryptoStream.Write(ciphertext, 0, ciphertext.Length);
cryptoStream.Close();
return memoryStream.ToArray();
}
}
}
}
#endregion
}
}
Generated by GNU Enscript 1.6.5.90.