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Re: [jose] #19: JWA needs to specify an IV for use with JWE AES Key Wrap

"jose issue tracker" <trac+jose@trac.tools.ietf.org> Tue, 09 April 2013 20:34 UTC

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Subject: Re: [jose] #19: JWA needs to specify an IV for use with JWE AES Key Wrap
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#19: JWA needs to specify an IV for use with JWE AES Key Wrap


Comment (by rlb@ipv.sx):

 It turns out that RFC 5649 is actually unambiguous about this:
 """
       [If the input is not exactly 8 bytes long...]
       Otherwise, apply the wrapping process specified in Section 2.2.1
       of [AES-KW2] to the padded plaintext {P[1], ..., P[n]} with K (the
       KEK) and the AIV as defined in Section 3 above as the initial
       value.
 """

 So it seems like there's a third course of action here, namely:

 (c) Upgrade the reference to RFC 3394 to reference RFC 5649 instead.

 That would also allow us to process inputs that are not 64-bit aligned.

-- 
-------------------------+-------------------------------------------------
 Reporter:               |       Owner:  draft-ietf-jose-json-web-
  watsonm@netflix.com    |  algorithms@tools.ietf.org
     Type:  defect       |      Status:  new
 Priority:  minor        |   Milestone:
Component:  json-web-    |     Version:
  algorithms             |  Resolution:
 Severity:  -            |
 Keywords:               |
-------------------------+-------------------------------------------------

Ticket URL: <http://trac.tools.ietf.org/wg/jose/trac/ticket/19#comment:1>
jose <http://tools.ietf.org/jose/>

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