Ok. Thanks. I have sent the document for Expert Review. Cheers.

> On Apr 7, 2026, at 2:05 PM, Esko Dijk <[email protected]> wrote:
> 
> Hi Mahesh, Michael,
> 
> My original comments were both addressed; first was removal of the 4492bis 
> reference.
> 
> The second was removal of mandatory or recommended (normative) crypto 
> details/algorithms in this item. The latest text doesn't have such 
> requirements. It only mentions some details to motivate some size-related 
> considerations for RSA and ECDSA - which is ok since it doesn't require any 
> of these to be used. It leaves it up to the protocol using 'voucher' to 
> select the crypto algorithms; and whether to use pinned pubk, pubk-sha256, or 
> pinned-domain-cert, or something entirely new using the extensions.
> 
> Esko
> 
> 
> 
> On 4/7/26 22:02, Mahesh Jethanandani wrote:
>> Hi Michael,
>> 
>> In reviewing the changes made in -29, I believe you have addressed the first 
>> comment from Esko, but I do not see a resolution for his second comment.
>> 
>> Thanks.
>> 
>>> On Mar 16, 2026, at 1:19 AM, Esko Dijk <[email protected]> 
>>> <mailto:[email protected]> wrote:
>>> 
>>> Hi Michael,
>>> 
>>> Thanks for the updates. It looks like one instance of the reference to 
>>> 'draft-ietf-tls-rfc4492bis-17' as shown in the text below still is present 
>>> in the rev -28, where the related text should be removed also.
>>> 
>>> I also think the voucher request format is generic and could store any 
>>> public key type! It's up to the specific protocol like BRSKI, cBRSKI or 
>>> others, or profiles of these protocols, to define what ciphersuites are to 
>>> be supported in the (D)TLS connections. So the crypto details should be 
>>> removed also here and left to the specific protocol using vouchers/VRs.
>>> 
>>> 
>>> 
>>> leaf proximity-registrar-pubk {
>>>       type binary;
>>>       description
>>>         "The proximity-registrar-pubk replaces
>>>          the proximity-registrar-cert in constrained uses of
>>>          the voucher-request.
>>>          The proximity-registrar-pubk is the
>>>          Raw Public Key of the Registrar. This field is encoded
>>>          as specified in RFC7250, section 3.
>>>          The ECDSA algorithm MUST be supported.
>>>          The EdDSA algorithm as specified in
>>>          draft-ietf-tls-rfc4492bis-17 SHOULD be supported.
>>>          Support for the DSA algorithm is not recommended.
>>>          Support for the RSA algorithm is a MAY, but due to
>>>          size is discouraged.";
>>> regards
>>> 
>>> Esko
>>> 
>>> 
>>> 
>>> On 3/16/26 01:11, Michael Richardson wrote:
>>>> [email protected] <mailto:[email protected]> wrote:
>>>>     > Internet-Draft draft-ietf-anima-rfc8366bis-28.txt is now available. 
>>>> It is a
>>>>     > work item of the Autonomic Networking Integrated Model and Approach 
>>>> (ANIMA) WG
>>>>     > of the IETF.
>>>> 
>>>>     > Title:   A Voucher Artifact for Bootstrapping Protocols
>>>>     > Name:    draft-ietf-anima-rfc8366bis-28.txt
>>>> 
>>>>     > A diff from the previous version is available at:
>>>>     > 
>>>> https://author-tools.ietf.org/iddiff?url2=draft-ietf-anima-rfc8366bis-28
>>>> 
>>>> This version deals with the AD review comments from Mahesh.
>>>> They are all complete, and I don't think there was anything particularly
>>>> controversial that the WG needed to be consulted on.  Of course, read the
>>>> diff and disagree.  (Or send text)
>>>> 
>>>> If you want to see how I dealt with each comment,  then one could start at:
>>>> https://github.com/anima-wg/voucher/issues/116
>>>> 
>>>> Each sub-issue deals with a type of comment, such as:
>>>>   
>>>> https://github.com/anima-wg/voucher/issues/116?issue=anima-wg%7Cvoucher%7C119
>>>> 
>>>> Where you can see a comment like:
>>>>     mcr added a commit that references this issue 3 days ago
>>>>     remove redundant word -grouping from names of groupings. close #119
>>>> 
>>>> with a link to, e.g., 
>>>> https://github.com/anima-wg/voucher/commit/ac84b245a12107a7271a984926075e3100444ac6
>>>> 
>>>> In the process of dealing with references from the YANG modules that did 
>>>> not
>>>> lead anywhere, I wound up removing some BCP14 language about supported
>>>> algorithms.  See https://github.com/anima-wg/voucher/issues/125
>>>> and also https://github.com/anima-wg/constrained-voucher/issues/346
>>>> 
>>>> This is not just about for (D)TLS itself, but in effect also supported
>>>> algorithms for the IDevID and registrar server certificate.
>>>> 
>>>> --
>>>> Michael Richardson <[email protected]> <mailto:[email protected]>  
>>>>  . o O ( IPv6 IøT consulting )
>>>>            Sandelman Software Works Inc, Ottawa and Worldwide
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
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>>>> <mailto:[email protected]>
>> 
>> 
>> Mahesh Jethanandani
>> [email protected] <mailto:[email protected]>
>> 
>> 
>> 
>> 
>> 
>> 


Mahesh Jethanandani
[email protected]






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