/// <summary>
/// Initializes a new instance of the <see cref="AesCipher"/> class.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="mode">The mode.</param>
/// <param name="padding">The padding.</param>
/// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentException">Keysize is not valid for this algorithm.</exception>
public AesCipher(byte[] key, CipherMode mode, CipherPadding padding)
: base(key, 16, mode, padding)
{
var keySize = key.Length * 8;
if (!(keySize == 256 || keySize == 192 || keySize == 128))
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "KeySize '{0}' is not valid for this algorithm.", keySize));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CastCipher"/> class.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="mode">The mode.</param>
/// <param name="padding">The padding.</param>
/// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentException">Keysize is not valid for this algorithm.</exception>
public CastCipher(byte[] key, CipherMode mode, CipherPadding padding)
: base(key, 8, mode, padding)
{
var keySize = key.Length * 8;
if (!(keySize >= 40 && keySize <= 128 && keySize % 8 == 0))
{
throw new ArgumentException(string.Format("KeySize '{0}' is not valid for this algorithm.", keySize));
}
SetKey(key);
}
private int _x0, _x1, _x2, _x3; // registers
/// <summary>
/// Initializes a new instance of the <see cref="SerpentCipher"/> class.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="mode">The mode.</param>
/// <param name="padding">The padding.</param>
/// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentException">Keysize is not valid for this algorithm.</exception>
public SerpentCipher(byte[] key, CipherMode mode, CipherPadding padding)
: base(key, 16, mode, padding)
{
var keySize = key.Length * 8;
if (!(keySize == 128 || keySize == 192 || keySize == 256))
{
throw new ArgumentException(string.Format("KeySize '{0}' is not valid for this algorithm.", keySize));
}
_workingKey = MakeWorkingKey(key);
}
/// <summary>
/// Initializes a new instance of the <see cref="BlowfishCipher"/> class.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="mode">The mode.</param>
/// <param name="padding">The padding.</param>
/// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentException">Keysize is not valid for this algorithm.</exception>
public BlowfishCipher(byte[] key, CipherMode mode, CipherPadding padding)
: base(key, 8, mode, padding)
{
var keySize = key.Length * 8;
if (keySize < 1 || keySize > 448)
{
throw new ArgumentException(string.Format("KeySize '{0}' is not valid for this algorithm.", keySize));
}
_s0 = new uint[SboxSk];
_s1 = new uint[SboxSk];
_s2 = new uint[SboxSk];
_s3 = new uint[SboxSk];
_p = new uint[PSize];
SetKey(key);
}
/// <summary>
/// Initializes a new instance of the <see cref="TwofishCipher"/> class.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="mode">The mode.</param>
/// <param name="padding">The padding.</param>
/// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
/// <exception cref="ArgumentException">Keysize is not valid for this algorithm.</exception>
public TwofishCipher(byte[] key, CipherMode mode, CipherPadding padding)
: base(key, 16, mode, padding)
{
var keySize = key.Length * 8;
if (!(keySize == 128 || keySize == 192 || keySize == 256))
{
throw new ArgumentException(string.Format("KeySize '{0}' is not valid for this algorithm.", keySize));
}
// TODO: Refactor this algorithm
// calculate the MDS matrix
var m1 = new int[2];
var mX = new int[2];
var mY = new int[2];
for (var i = 0; i < MAX_KEY_BITS; i++)
{
var j = P[0 + i] & 0xff;
m1[0] = j;
mX[0] = Mx_X(j) & 0xff;
mY[0] = Mx_Y(j) & 0xff;
j = P[(1 * 256) + i] & 0xff;
m1[1] = j;
mX[1] = Mx_X(j) & 0xff;
mY[1] = Mx_Y(j) & 0xff;
gMDS0[i] = m1[P_00] | mX[P_00] << 8 | mY[P_00] << 16 | mY[P_00] << 24;
gMDS1[i] = mY[P_10] | mY[P_10] << 8 | mX[P_10] << 16 | m1[P_10] << 24;
gMDS2[i] = mX[P_20] | mY[P_20] << 8 | m1[P_20] << 16 | mY[P_20] << 24;
gMDS3[i] = mX[P_30] | m1[P_30] << 8 | mY[P_30] << 16 | mX[P_30] << 24;
}
_k64Cnt = key.Length / 8; // pre-padded ?
SetKey(key);
}
/// <summary>
/// Initializes a new instance of the <see cref="DesCipher"/> class.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="mode">The mode.</param>
/// <param name="padding">The padding.</param>
/// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
public DesCipher(byte[] key, CipherMode mode, CipherPadding padding)
: base(key, 8, mode, padding)
{
}
