Sets the program used to encrypt and decrypt messages. The program selected must take an encryption key as the first line written to work with IRCII, with the second and subsequent lines the text to encrypted, which is expected on the programs standard output.
Note that in ircII 4.4 and previous, this variables program API was different. Originally the encryption key was they command line argument, and the program a true filter. However, it is not secure from local users snooping the key and being able to decrypt messages, should they obtain them. Set the OLD_ENCRYPT_PROGRAM variable to on to obtain this old behaviour. See Also: set/old_encrypt_program set/decrypt_program