Last Call Review of draft-kivinen-ipsecme-secure-password-framework-
I have reviewed this document as part of the security directorate's
ongoing effort to review all IETF documents being processed by the
IESG. These comments were written primarily for the benefit of the
security area directors. Document editors and WG chairs should treat
these comments just like any other last call comments.
The intended status of this document is Informational, but in some
sense it is performing actions with implications for standards. It
implies, but does not state, that IANA should not allocate the "IKEv2
Authentication Method" numbers requested by three experimental drafts
(, , ). The motivation for this draft is that "each of (,
, ) used different method to negotiate" the use of the method,
but it does not clarify where the difficulty arises - each of those
three documents defines its own IKEv2 Authentication Method.
The Security Considerations section punts to , , and , but
this document would be more useful if it provided a comparison of the
existing methods. There are some signficiant differences (for
instance,  has special considerations for RFC5282, but  and 
do not), and the absence of a securty analysis puts a burden on the
user of the framework.
The document has many nits, and needs an editorial pass. Some
suggested changes below:
"This document specifies a common way so those methods can agree on
which method is to be used in current connection." -> "This document
specifies a way to agree on which method is to be used in current
"As each of those documents used different method to negotiate the use
of the method ..." -> "As each of those documents used a different
technique to negotiate the use of the method ..."
I suggest removing "This document does not create new protocol or even
define a protocol which could be used to do anything."
"The proposed negotiation exchange would be:" -> "The secure password
negotiation exchange is:"
"TBD Secure Password Authentication Method" -> " TBD Generic Secure
Password Authentication Method"