I will update the IANA Considerations to provide the name for the module OID.

Russ


> On Dec 3, 2025, at 4:29 PM, Sean Turner <[email protected]> wrote:
> 
> Yes. This would work great! Can I suggest the following string for the module:
> 
> id-mod-plm-2025 (TBD0)
> 
> That would make the registrations:
> 
> id-mod-plm-2025 (86) in 
> https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml#security-smime-0
> 
> and
> 
> id-ct-prefixlenCSVwithCRLF (57) in 
> https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml#security-smime-1
> 
> spt
> 
>> On Dec 3, 2025, at 13:19, David Dong via RT 
>> <[email protected]> wrote:
>> 
>> Hi Sean,
>> 
>> Would this proposed update from Russ be OK if they were to implement it? 
>> This is still on the telechat agenda for tomorrow, if you would be able to 
>> let us know today.
>> 
>> Thank you!
>> 
>> Best regards,
>> 
>> David Dong
>> IANA Services Sr. Specialist
>> 
>> On Wed Dec 03 17:41:54 2025, [email protected] wrote:
>>> I suggest an Appendix with this ASN.1 Module:
>>> 
>>> ~~~
>>>   PrefixLengthsModule-2025
>>>     { iso(1) member-body(2) us(840) rsadsi(113549)
>>>       pkcs(1) pkcs9(9) smime(16) mod(0) TBD0 }
>>> 
>>> DEFINITIONS IMPLICIT TAGS ::=
>>> BEGIN
>>> 
>>> -- EXPORTS ALL --
>>> 
>>> IMPORTS
>>>  CONTENT-TYPE
>>>  FROM CryptographicMessageSyntax-2010 -- in [RFC6268]
>>>  { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1)
>>>    pkcs-9(9) smime(16) modules(0) id-mod-cms-2009(58) } ;
>>> 
>>> ContentSet CONTENT-TYPE ::= { ct-prefixlenCSVwithCRLF, ... }
>>> 
>>> ct-prefixlenCSVwithCRLF CONTENT-TYPE ::=
>>>  { TYPE OCTET STRING IDENTIFIED BY id-ct-prefixlenCSVwithCRLF }
>>> 
>>> id-ct-prefixlenCSVwithCRLF OBJECT IDENTIFIER ::=
>>>  { iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1)
>>>    pkcs-9(9) smime(16) ct(1) TBD1 }
>>> 
>>> END
>>> ~~~
>>> 
>>> We will also need IANA to assign an OID for the module.  This is a
>>> minor update to the IANA considerations section.
>>> 
>>> Russ
>>> 
>>>> On Dec 2, 2025, at 5:09 PM, David Dong via RT <drafts-expert-review-
>>>> [email protected]> wrote:
>>>> 
>>>> Dear Authors/Chairs/ADs,
>>>> 
>>>> Please see below for feedback for the SMI Security for S/MIME CMS
>>>> Content Type registration from the expert.
>>>> 
>>>> Best regards,
>>>> 
>>>> David Dong
>>>> IANA Services Sr. Specialist
>>>> 
>>>> On Tue Dec 02 20:45:44 2025, [email protected] wrote:
>>>>> Did a quick look at this and have a questions about why there’s no
>>>>> ASN.1 module that formally defines the content type? The knock on
>>>>> effects for adding a module that come to mind would be:
>>>>> - another section for the ASN.1 module
>>>>> - another IANA request for SMIME ASN.1 Module Arc
>>>>> - normative refs to X.680, X.690, & RFC 5911 (imports CONTENT-TYPE)
>>>>> 
>>>>> Cheers,
>>>>> spt
>>>>> 
>>>>>> On Dec 1, 2025, at 18:50, David Dong via RT <drafts-expert-review-
>>>>>> [email protected]> wrote:
>>>>>> 
>>>>>> Dear Sean Turner (cc: opsawg WG),
>>>>>> 
>>>>>> As the backup designated expert for the SMI Security for S/MIME CMS
>>>>>> Content Type registry, can you review the proposed registration in
>>>>>> draft-ietf-opsawg-prefix-lengths-08 for us? Would you be able to
>>>>>> review this before the IESG telechat this week?
>>>>>> 
>>>>>> Please note that Russ is a co-author on this document.
>>>>>> 
>>>>>> Please see:
>>>>>> 
>>>>>> https://datatracker.ietf.org/doc/draft-ietf-opsawg-prefix-lengths/
>>>>>> 
>>>>>> If this is OK, when the IESG approves the document for publication,
>>>>>> we'll make the registration at:
>>>>>> 
>>>>>> https://www.iana.org/assignments/smi-numbers/
>>>>>> 
>>>>>> With thanks,
>>>>>> 
>>>>>> David Dong
>>>>>> IANA Services Sr. Specialist
>>>>>> 
>>>>>> On Thu Nov 13 23:10:41 2025, david.dong wrote:
>>>>>>> Dear Sean Turner (cc: opsawg WG),
>>>>>>> 
>>>>>>> As the backup designated expert for the SMI Security for S/MIME
>>>>>>> CMS
>>>>>>> Content Type registry, can you review the proposed registration in
>>>>>>> draft-ietf-opsawg-prefix-lengths-08 for us? Please note that Russ
>>>>>>> is
>>>>>>> a
>>>>>>> co-author on this document.
>>>>>>> 
>>>>>>> Please see:
>>>>>>> 
>>>>>>> https://datatracker.ietf.org/doc/draft-ietf-opsawg-prefix-lengths/
>>>>>>> 
>>>>>>> The due date is November 27th.
>>>>>>> 
>>>>>>> If this is OK, when the IESG approves the document for
>>>>>>> publication,
>>>>>>> we'll make the registration at:
>>>>>>> 
>>>>>>> https://www.iana.org/assignments/smi-numbers/
>>>>>>> 
>>>>>>> With thanks,
>>>>>>> 
>>>>>>> David Dong
>>>>>>> IANA Services Sr. Specialist
>>>>>> 
>>>> 
>> 
> 

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