Hi,
I did a thorough very trough read of draft-ietf-emu-aka-pfs-07. I found several
minor things that I think should be fixed:
- Fixed all names with non-ascii characters including my own. -07 dispays
non-ascii characters in some of the references wrongly.
- I fixed all the idnits (to long rows and not mentioning update in abstract).
- Fixed the xml code for the references. They generated weird output when using
the lastest version of xml2rfc.
- Added a formal reference to 3GPP TS 33.501
- Added proper figure captions and use of align center
- Reformated and aligned the figures. They used different horizontal and
vertical spacing. No technical changes to the figures. They now use the full
width.
- Renamed the new "Key Derivation Function" field "FS Key Derivation Function"
in AT_KDF_FS to avoid confusion with the existing field.
- Split the quite long security considerations section into subsections.
- Removed mention of (R)UIM and added more explanation of USIM and SIM card.
R)UIM has been superceeded by CSIM on UICC.
- Added that requirements for generation, validation, and processing depends on
the curve.
- Added missing point validation for P-256
- Fixed some incorrect references to elliptic curve crypto.
- Processing “start again after validation falilure” apply to all curves.
- Added privacy-friendly to several places to align with the requirement in -07
- Added section on Unprotected Data and Privacy to align with BCP on pervasive
monitoring.
- Added section on Post-Quantum Considerations. This section also describes
that EAP-AKA’ FS can easily in the future be expanded with PQC KEMs.
- One issue I found is that the interactions between AT_KDF and AT_KDF_AT are
not specified. The Specification is clear on how to derive keys when AT_KDF in
{1} and AT_KDF_FS in {1,2} but does not give any descriptions on how other
future combinations are supposed to work. For example, what happens if someone
registers AT_KDF = 2?
https://github.com/emu-wg/eap-aka-pfs/issues/25
Currently suggested changes can be found on GitHub
https://github.com/emu-wg/eap-aka-pfs
A Diff can be found here:
https://www.ietf.org//rfcdiff?url1=https://www.ietf.org/archive/id/draft-ietf-emu-aka-pfs-07.txt&url2=https://raw.githubusercontent.com/emu-wg/eap-aka-pfs/master/draft-ietf-emu-aka-pfs-latest.txt<https://www.ietf.org/rfcdiff?url1=https://www.ietf.org/archive/id/draft-ietf-emu-aka-pfs-07.txt&url2=https://raw.githubusercontent.com/emu-wg/eap-aka-pfs/master/draft-ietf-emu-aka-pfs-latest.txt>
This current changes on GitHub includes a solution to #25 but I not sure that
it is the correct solution.
I have not discussed with Jari yet. Comments on anything above is welcome. I
expect that we will submit -08 quite soon after vacation. As discussed at IETF
114, the plan is to progress the draft during fall.
Cheers,
John
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