Flexibility Additional key-sizes and block-sizes ability to function efficiently and securely in a wide variety of platforms and applications low-end smartcards wireless: small memory requirements IPSec, ATM- small key setup time in hardware B-ISDN, satellite communication-large encryption speed3 • Additional key-sizes and block-sizes • Ability to function efficiently and securely in a wide variety of platforms and applications low-end smartcards, wireless: small memory requirements IPSec, ATM – small key setup time in hardware B-ISDN, satellite communication – large encryption speed Flexibility