Copyright (C) 2001 Neil Edelman, see copying.txt. neil dot edelman each mail dot mcgill dot ca Version 2.1. This program comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under certain conditions; see copying.txt. The encryption process uses a stream cipher. The length of the key is linearly related to how many bits of encryption. The bits of the key generate a pseudorandom keysteam. It is possible that this is insecure.