public void EncryptDecryptArray_KeyDoNotMutate()
{
#region init
int dataLength = 13107200;
ulong[] dataArray = new ulong[dataLength];
ulong[] originalDataArray = new ulong[dataLength];
int keyLength = 56;
byte[] key = new byte[keyLength];
Random rnd = new Random();
rnd.NextBytes(key);
byte[] originalKey = new byte[keyLength];
Array.Copy(key, originalKey, key.Length);
for (var i = 0; i < dataLength; i++)
{
uint r = (uint)rnd.Next();
ulong l = (uint)rnd.Next();
dataArray[i] = (l << 32) | r;
originalDataArray[i] = dataArray[i];
}
#endregion
Blowfish blowfish = new Blowfish(key);
blowfish.EncryptArray(dataArray);
Blowfish blowfish2 = new Blowfish(key);
blowfish2.DecryptArray(dataArray);
for (var i = 0; i < key.Length; i++)
{
Assert.IsTrue(key[i] == originalKey[i]);
}
}