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Re: [kitten] PA-ENC-TIMESTAMP is worse than we thought; fix in aes-cts-hmac-sha2?

"Henry B (Hank) Hotz, CISSP" <hbhotz@oxy.edu> Tue, 12 April 2016 22:20 UTC

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From: "Henry B (Hank) Hotz, CISSP" <hbhotz@oxy.edu>
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To: Nico Williams <nico@cryptonector.com>
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Cc: kitten@ietf.org, "Michael J. Jenkins" <mjjenki@tycho.ncsc.mil>, "Kelley W. Burgin" <kelley.burgin@gmail.com>
Subject: Re: [kitten] PA-ENC-TIMESTAMP is worse than we thought; fix in aes-cts-hmac-sha2?
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> On Apr 12, 2016, at 2:45 PM, Nico Williams <nico@cryptonector.com> wrote:
> 
> That's nice, but... why did we ever have non-randomly-generated salts?
> 
> "Convenience" seems like a nice explanation, but I suspect it wasn't
> just that: it may have been a half-baked security feature.

I guess that’s a valid description. AFAIK time stamps were used because because there was no way to prevent replay attacks if you used the random nonce specified in the original Needham-Schroeder algorithm.

Anyone know when JAAS will support FAST or PKINIT?


Personal: hbhotz@oxy.edu
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