Cast-128-Cipher sources: https://tools.ietf.org/html/rfc2144 - The CAST-128 Encryption Algorithm http://criptoras.blogspot.com/2012/10/cast-128-block-cipher.html example: https://www.scribd.com/presentation/61994269/CAST-128 code: https://meet.google.com/linkredirect?authuser=0&dest=https%3A%2F%2Fgithub.com%2Fzaaabik%2Fcast128 2.https://meet.google.com/linkredirect?authuser=0&dest=https%3A%2F%2Fgithub.com%2Fpiaopolar%2FCAST-128