In message <199701031956.OAA01250@thunk.orchard.medford.ma.us>, Bill Sommerfeld writes: > > my understanding is that, for best security, the IV should be > different for each packet. Question: Does the IV have to be *unpredictably* different, or just different? (The NRL code, for example, simply increments the IV after each packet). -- C. Harald Koch chk@border.com