public DesParameters(byte[] key, int keyOff, int keyLen) : base(key, keyOff, keyLen)
{
if (DesParameters.IsWeakKey(key, keyOff))
{
throw new ArgumentException("attempt to create weak DES key");
}
}
public static bool IsWeakKey(byte[] key, int offset, int length)
{
for (int i = offset; i < length; i += 8)
{
if (DesParameters.IsWeakKey(key, i))
{
return(true);
}
}
return(false);
}
public static bool IsWeakKey(byte[] key)
{
return(DesParameters.IsWeakKey(key, 0));
}