it is my understanding that the style guide says that there should be no references in the abstract – so “This document updates [RFC3370] and ...” is not permitted – I would suggest that it should read “This document updates “Cryptographic Message Syntax (CMS) Algorithms” (RFC 3370) and ...”. Then change the second sentence in the introduction to read: “Cryptographic Message Syntax (CMS) Algorithms [RFC3370] describes the use of common cryptographic algorithms with the CMS. This specification updates [RFC3370] to describe the use of the SHAKE128 and SHAKE256 specified in [SHA3] as new hash functions in CMS.” Otherwise the specification does not present any operational issues and looks ready for publication