Field 2 related to digital certificate in DRM

RO & confirm

1. "certificate chain" inRorequest
"Is sent unless it is indicated in the RI context that this Ri has stored necessary device Certificate Information ".

2. "peer key identifier" inRorequest
Must send "if, and only if, it has stored the RI public key corresponding to the stored Ri ID" specified in 5.4.2.4.1.

3. "No OCSP Response" inRorequest
Must send "if, and only if, it has a complete set of valid OCSP responses for the RI certificate chain ".

4. "OCSP responder key identifier" inRorequest
Must send "if, and only if, it has stored an OCSP responder key for this Ri ".

5. "certificate chain" inRoresponse
"Must be present unless a preceding ROAP-rorequest message contained the peer Key Identifier extension ".

6. "OCSP Response" inRoresponse
"Will not be sent if the device sent the Extension No OCSP Response ".

7. "certificate chain" inRoconfirmrequest
"Is sent in the 3-pass confirmed Ro acquisition protocol ".

Meteringreport

8. "certificate chain" inMeteringreportsubmit
"Is sent unless it is indicated in the RI context that this Ri has stored necessary device Certificate Information ".

9. "peer key identifier" inMeteringreportsubmit

10. "No OCSP Response" inMeteringreportsubmit

11. "OCSP responder key identifier" inMeteringreportsubmit

12. "certificate chain" inMeteringreportresponse
"Must be present unless" 9 present.

13. "OCSP Response" inMeteringreportresponse
"Shall be a complete set of valid OCSP responses for the RI's certificate chain ".
"This parameter will not be sent if" 10 present.