RE: MUST implement AES-CBC for IPsec ESP

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Russ Housley wrote:
> During the IETF Last Call for draft-manral-ipsec-rfc4305-bis-errata, 
> we received a comment that deserves wide exposure.
> 
> For ESP encryption algorithms, the document that was sent out for Last

> Call contains the following table:
> 
>       Requirement    Encryption Algorithm (notes)
>       -----------    --------------------
>       MUST           NULL (1)
>       MUST-          TripleDES-CBC [RFC2451]
>       SHOULD+        AES-CBC with 128-bit keys [RFC3602]
>       SHOULD         AES-CTR [RFC3686]
>       SHOULD NOT     DES-CBC [RFC2405] (3)
> 
> The Last Call comment suggests changing the "SHOULD+" for AES-CBC to 
> "MUST."
> 
> I support this proposed change, and I have asked the author to make 
> this change in the document that will be submitted to the IESG for 
> consideration on the Telechat on January 25th.  If anyone has an 
> objection to this change, please speak now.  Please send comments on 
> this proposed change to the iesg@xxxxxxxx or ietf@xxxxxxxx mailing 
> lists by 2007-01-24.
> 
> Russ Housley
> Security AD

Strangely missing is AES/GCM [RFC4106].

SHOULDn't this be a SHOULD ?

Y(J)S

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