17 years or so after the MD5 hash algorithm was designed, Ron Rivest and a team of researchers presented the MD6 hash in CRYPTO 2008 (56 slides in .ppt). Highly interesting presentation, especially on what has changed all these years and nice animations showing how the hash works. I really liked that they say that since even the smallest computer has at least 1KB of RAM, MD6 uses 512 bytes (bytes not bits) for message block size.
Related: MD6 Withdrawn from SHA-3 Competition.
[via cryptography]
Managing organized complexity 
Σε αυτό το post:
http://www.mail-archive.com/cryptography@metzdowd.com/msg09690.html
το εξηγούν καλύτερα (και πιο προσιτά) από τις διαφάνειες του Rivest