Hi, I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. This document specifies a method to bind a visual representation of a certificate in the form of a certificate image to a [RFC5280] public key certificate by defining a new otherLogos image type according to [RFC3709]. ----- From a security perspective the document looks okay to me. I did see one 'TBD' OID reference that I hope the authors haven't forgotten about. Pat Cain