1 / 4

Proposed PRF Text Changes

Proposed PRF Text Changes. Jesse Walker Intel Corporation. Proposed PRF. PRF-AES( Key , AuthenticatorMAC , SupplicantMAC , Label , Nonce , Length ) R  “” iterations  ( Length +15)/16 for i  1 to iterations do R  R | AES-CBC-MAC( Key ,

ulric-stone
Download Presentation

Proposed PRF Text Changes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Proposed PRF Text Changes Jesse Walker Intel Corporation Jesse Walker, Intel Corporation

  2. Proposed PRF PRF-AES(Key, AuthenticatorMAC, SupplicantMAC, Label, Nonce, Length) R “” iterations (Length+15)/16 fori 1 toiterationsdo RR | AES-CBC-MAC(Key, AuthenticatorMAC | SupplicantMAC | i | Label | Nonce | Length) returnSubstring(R, 0, Length) Jesse Walker, Intel Corporation

  3. Discussion • Neither current PRF nor proposed PRF conforms to draft NIST SP 800-56 • Current PRF does not exploit full entropy of PMK, but proposed PRF does • Current PRF subject to prefix attacks, but proposed PRF does Jesse Walker, Intel Corporation

  4. Motions • Instruct the editor to replace the text of Clause 8.5.1.1 with text from doc 02-795r2 • Instruct the 802.11 Chair to submit the following comment to NIST comments list kmscomments@nist.gov by April 3: “IEEE 802.11 would like NIST to allow AES-CBC-MAC to be used in approved KDF functions as an alternative to a one-way hash function in Clause 5.3 of draft SP 800-56.” Jesse Walker, Intel Corporation

More Related