OSEC

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From: David Wagner (dawmozart.cs.berkeley.edu)
Date: Wed Nov 21 2001 - 01:56:41 CST

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    Lance James wrote:
    >I have written some code that rotates the session
    >key every 52 blocks, [...] is there anything
    >I should be aware of?

    Are you using a decent cipher? Modern ciphers should be good
    for far more than this, so if this is a work-around for a weak
    cipher, you'd do better to simply start using a better cipher.

    Then again, maybe you are just being very cautious...
    (which is not necessarily a bad thing)

    Ok, to answer your question we probably need more info. How
    are you deriving your "rotating" session keys? And what
    cryptosystem are you using the keys with?