|visits||member for||1 year, 2 months|
|seen||Mar 20 at 9:28|
I work for Google Australia on the Google App Engine (Python) team.
|bio||website||cs.mu.oz.au/~mgiuca||visits||member for||1 year, 2 months|
|location||Australia||seen||Mar 20 at 9:28|
Using a Non-Random IV with modes other than CBC
"CFB and OFB require only uniqueness ... The is no need for unpredictability" -- This is not what it says in NIST SP800-38A: "For the CBC and CFB modes, the IVs must be unpredictable." It does not explain why, and I don't understand why the IV must be unpredictable for CFB. It does say that OFB does not require an unpredictable IV.