# Telechat SECDIR Review of draft-ietf-lamps-pq-composite-sigs-15 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. The summary of the review is Ready. This is a re-review of my previous review of -14 which is here: https://datatracker.ietf.org/doc/review-ietf-lamps-pq-composite-sigs-14-secdir-lc-eastlake-2026-02-04/ This draft specifies how to do hybrid signatures with ML-DSA as the post-quantum algorithm and various traditional algorithms. ## Security Considerations This draft does a good job of covering all the bases. It explains the hybrid signature concept and motivation well. The Security Considerations Section appears to be thorough and comprehensive. ## Major/Minor Issues None. ## Nits All of the nits mentioned in my previous review have been corrected and, as far as I can see, no new ones added. I did not review Sections 7 and 8 or Appendices A through F. Thanks, Donald ============================= Donald E. Eastlake 3rd +1-508-333-2270 (cell) 2386 Panoramic Circle, Apopka, FL 32703 USA d3e3e3@gmail.com