Hello, I have reviewed draft-ietf-tls-chacha20-poly1305-04 as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review. Document editors and WG chairs should treat these comments just like any other last call comments. This I-D leverages the existing definition Of Chacha20 and Poly1305 as per RFC7539 and uses those to define new TLS ciphersuites. I believe this document is ready for publication. There are no real operational considerations in this document: the new ciphersuites are merely IANA codepoints for TLS; TLS itself is crypto-agile and can dynamically negotiate mutually matching ciphersuites with TLS clients. This allows an easy step-up to these new ciphersuites where they are available. I did not even find a single nit! Greetings, Stefan Winter Attachment: 0x8A39DC66.asc Description: application/pgp-keys Attachment: signature.asc Description: OpenPGP digital signature