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This draft is a work item of the Kerberos Working Group of the IETF.
Title : PK-INIT Cryptographic Algorithm Agility
Author(s) : L. Hornquist Astrand, L. Zhu
Filename : draft-ietf-krb-wg-pkinit-alg-agility-02.txt
Pages : 14
Date : 2007-3-7
The PK-INIT defined in RFC 4556 is examined and updated to remove
protocol structures tied to specific cryptographic algorithms. The
affinity to SHA as the check-sum algorithm in the authentication
request is analyzed. The PK-INIT key derivation function is made
negotiable, the digest algorithms for signing the pre-authentication
data and the client's X.509 certificates are made discoverable.
These changes provide protection preemptively against vulnerabilities
discovered in the future against any specific cryptographic
algorithm, and allow incremental deployment of newer algorithms.
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