public AesAlgorithmImp GetAlgorithm(byte[] key)
{
IKeyExpander expander = GetKeyExpander(key.Length);
IRoundKeyProvider keyProvider = new RoundKeyProvider(key, expander, _processor);
return(new AesAlgorithmImp(keyProvider));
}
public RoundKeyProvider(byte[] encryptionKey,
IKeyExpander expander,
IConvertProcessor <List <byte[, ]>, byte[]> processor)
{
byte[] expandedKey = expander.ExpandKey(encryptionKey);
_keys = processor.ConvertTo(expandedKey);
KeysNumber = _keys.Count;
}
public XorEncrypter(
IBytesCoder bytesCoder,
IArrayPacker <byte, int> arrayPacker,
IKeyExpander <int> keyExpander)
{
this.bytesCoder = bytesCoder;
this.arrayPacker = arrayPacker;
this.keyExpander = keyExpander;
}
public void Check256BitKeyExpansion()
{
_expander = new AesKeyExpander256(32);
byte[] keySequence = _expander.ExpandKey(new byte[32]);
byte lastByte = keySequence[keySequence.Length - 1];
byte expectedLastByte = 0x85;
Assert.AreEqual(lastByte, expectedLastByte);
}
public void Check192BitKeyExpansion()
{
_expander = new AesKeyExpander128And192(24);
byte[] keySequence = _expander.ExpandKey(new byte[24]);
byte lastByte = keySequence[keySequence.Length - 1];
byte expectedLastByte = 0x70;
Assert.AreEqual(lastByte, expectedLastByte);
}
