Download - Cast-128,RC2 RC4, RC5
Transcript
4/10/2011
CAST-128 Developed by Carlisle Adams and Stafford Tavares 64-bit block size and key size varies from 40- to 128-bits in
8-bit increments
Classical Feistel network structure
Sixteen rounds Two subkeys per round, one 32-bit (Kmi), one 5-bit (Kri) Three different round functions Four operations: addition(+) and subtraction(-) modulo 232, XOR, and (variable) circular left rotate (
