Just as an aside, RFC5755 references X.509-2000, while the LDAP spec is based 
on the 1993 X.500 spec.
Attribute Certificates didn't exist in the X.509-1993 spec. So it seems you'll 
need to write your
own custom schema to support them.

Pascal Jakobi wrote:
> Q:I'm curious what you're doing because I never saw attribute certs widely 
> used in practice.
> 
> R:Years ago, we created an XACML server that is RBAC profile compliant : 
> https://projects.ow2.org/view/authzforce/.
> 
> Question is : how do you represent roles, especially in a security-critical 
> context such as the one I work in. For such a matter, attribute certs might 
> be an
> answer : signature, delegation, etc. Also usable for security clearances, etc.
> 
> Feel free to ask if you need more info on this.
> 
> 
> BTW. I will look again into pmi.[schema|ldif], but I could not find attribute 
> certificates at first. It seems to me that it only provides the PMI 
> (=Privilege
> Mgmt Infra., the equivalent of a PKI for id certs) schema.
> 
> Best,
> 
> P
> 
> On 20/10/2022 17:24, Michael Ströder wrote:
>> On 10/20/22 12:14, Pascal Jakobi wrote:
>>> I am looking for an RFC 5755 (attribute certificates profile) schema file.
>>>
>>> I thought it was in pmi.schema, but it appears that no, unless I am missing 
>>> sthing.
>>
>> AFAICS pmi.schema is indeed what you're looking for.
>>
>> Note that RFC 5755 defines the X.509 certificate profile and not an LDAP 
>> schema.
>>
>> BTW: I'm curious what you're doing because I never saw attribute certs 
>> widely used in practice.
>>
>> Ciao, Michael.
> 


-- 
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/

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