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RE: Is Anyone in the IPsec WG Writing a Draft RFC Using AES CBC M AC for ESP Integrity?



On Tue, 3 Jul 2001, Helger Lipmaa wrote:

 > I would recommend to hold your breath until the NIST has standardised this
 > mode. The new NIST modes workshop is going to happen at the end of August
 > (see http://www.nist.gov/modes). CBC MAC is currently not on the list, but
 > there are a few alternative possibilities.
 >
 > Moreover, CBC MAC has recently been extended so that it would be secure
 > for arbitrary message lengths... So that standardising effort might take
 > more than just writing a draft.

Still, a correction: The XCBC (MAC) mode by Black and Rogaway is equal to
the 'extended CBC MAC' mode.

Helger





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