pgp ideas for ibm systems i ve been thinking about how difficult it would be to make pgp available in some form on ebcdic machines the message authentication would be ugly but i think at least the idea encryption could work if pgp had a switch to tell it to use idea in ofb mode or ecb mode in ofb mode errors in translating ebcdic ascii ebcdic would only affect their byte not the bytes that would be affected under cbc is pgp set up to use different idea modes i don t recall notincing it in the executable but i haven t gone through it as carefully as i probably should john kelsey
