[Pki-devel] [PATCH] DRM Transport Key Rotation

[Andrew Wnuk]

On 09/27/2013 09:55 AM, Christina Fu wrote:
> First of all, I think it's a nice framework that lays the basis for 
> supporting multiple DRM transport keys.  Thanks for taking care of the 
> encrypt/decrypt case as well, which is essential in DRM for supporting 
> HSM's that do not support wrapping/unwrapping.
>
> A couple observations/questions:
>
> * in base/kra/src/com/netscape/kra/EnrollmentService.java, 
> transportCert is specifically deleted from the requests after extraction.
> We might want to consider making it optional.  I understand that some 
> customer in the past has utilized DRM requests for their own 
> purposes.  If space is a concern, one idea is to store the nickname 
> instead.  Just something to think about.
>
> * Another thing, perhaps as a phase 2, is to think about how to get 
> the exact transport cert that the client is using into the request to 
> the DRM.  The primary scenario that we wish to cover, I think, is the 
> case when the transport keys are in transition.  The scenario in my 
> mind would be someone getting to the enrollment page (thus a transport 
> key is already in the browser), then taking his/her time to fill out 
> the form, meanwhile, the CA's transport cert changed.  However, in 
> this patch, CA is getting the transport cert from it's CS.cfg and 
> stuffing it into the request, which means that in this scenario, CA is 
> stuffing the new transport cert into the request instead of the old 
> one that the client is using.
> Again, I understand that it is not an easy one to resolve, but it is 
> essential to this feature so we need to solve eventually, perhaps at 
> the next phase.  We can discuss more about this.
Ticket #750 has been created - https://fedorahosted.org/pki/ticket/750
>
> Christina
>
> On 09/25/2013 04:59 PM, Andrew Wnuk wrote:
>> This patch provides basic support for DRM transport key rotation 
>> described
>>     in http://pki.fedoraproject.org/wiki/DRM_Transport_Key_Rotation
>>
>>     This patch provides implementation for tickets:
>>      - 729 - CA to include transport certificate when submitting 
>> archival request to DRM
>>      - 730 - DRM to detect presence of transport certificate 
>> attribute in submitted archival
>>              request and validate transport certificate against DRM's 
>> transport key list
>>      - 731 - DRM to provide handling for alternative transport key 
>> based on detected
>>              and validated transport certificate arriving as a part 
>> of extended archival request
>>
>>
>>
>>
>>
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>
>
>
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