| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2986 | PKCS #10: Certification Request Syntax Specification Version 1.7M. Nystrom, B. Kaliski | Informational | November 2000 |
| 3092 | Etymology of "Foo"D. Eastlake 3rd, C. Manros, E. Raymond | Informational | 1 April 2001 |
| 3279 | Algorithms and Identifiers for the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileL. Bassham, W. Polk, R. Housley | Proposed Standard | May 2002 |
| 4211 | Internet X.509 Public Key Infrastructure Certificate Request Message Format (CRMF)J. Schaad | Proposed Standard | September 2005 |
| 5280 | Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileD. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk | Proposed Standard | May 2008 |
| 5480 | Elliptic Curve Cryptography Subject Public Key InformationS. Turner, D. Brown, K. Yiu, R. Housley, T. Polk | Proposed Standard | March 2009 |
| 5639 | Elliptic Curve Cryptography (ECC) Brainpool Standard Curves and Curve GenerationM. Lochter, J. Merkle | Informational | March 2010 |
| 5652 | Cryptographic Message Syntax (CMS)R. Housley | Internet Standard | September 2009 |
| 5758 | Internet X.509 Public Key Infrastructure: Additional Algorithms and Identifiers for DSA and ECDSAQ. Dang, S. Santesson, K. Moriarty, D. Brown, T. Polk | Proposed Standard | January 2010 |
| 5912 | New ASN.1 Modules for the Public Key Infrastructure Using X.509 (PKIX)P. Hoffman, J. Schaad | Informational | June 2010 |
| 5914 | Trust Anchor FormatR. Housley, S. Ashmore, C. Wallace | Proposed Standard | June 2010 |
| 5915 | Elliptic Curve Private Key StructureS. Turner, D. Brown | Informational | June 2010 |
| 5958 | Asymmetric Key PackagesS. Turner | Proposed Standard | August 2010 |
| 6090 | Fundamental Elliptic Curve Cryptography AlgorithmsD. McGrew, K. Igoe, M. Salter | Informational | February 2011 |
| 6234 | US Secure Hash Algorithms (SHA and SHA-based HMAC and HKDF)D. Eastlake 3rd, T. Hansen | Informational | May 2011 |
| 7292 | PKCS #12: Personal Information Exchange Syntax v1.1K. Moriarty, Ed., M. Nystrom, S. Parkinson, A. Rusch, M. Scott | Informational | July 2014 |
| 7296 | Internet Key Exchange Protocol Version 2 (IKEv2)C. Kaufman, P. Hoffman, Y. Nir, P. Eronen, T. Kivinen | Internet Standard | October 2014 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 8017 | PKCS #1: RSA Cryptography Specifications Version 2.2K. Moriarty, Ed., B. Kaliski, J. Jonsson, A. Rusch | Informational | November 2016 |
| 8032 | Edwards-Curve Digital Signature Algorithm (EdDSA)S. Josefsson, I. Liusvaara | Informational | January 2017 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8410 | Algorithm Identifiers for Ed25519, Ed448, X25519, and X448 for Use in the Internet X.509 Public Key InfrastructureS. Josefsson, J. Schaad | Proposed Standard | August 2018 |
| 8411 | IANA Registration for the Cryptographic Algorithm Object Identifier RangeJ. Schaad, R. Andrews | Informational | August 2018 |
| 8551 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message SpecificationJ. Schaad, B. Ramsdell, S. Turner | Proposed Standard | April 2019 |
| 9180 | Hybrid Public Key EncryptionR. Barnes, K. Bhargavan, B. Lipp, C. Wood | Informational | February 2022 |
| 9794 | Terminology for Post-Quantum Traditional Hybrid SchemesF. Driscoll, M. Parsons, B. Hale | Informational | June 2025 |
| 9810 | Internet X.509 Public Key Infrastructure -- Certificate Management Protocol (CMP)H. Brockhaus, D. von Oheimb, M. Ounsworth, J. Gray | Proposed Standard | July 2025 |
| 9846 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla | Proposed Standard | July 2026 |
| 9881 | Internet X.509 Public Key Infrastructure -- Algorithm Identifiers for the Module-Lattice-Based Digital Signature Algorithm (ML-DSA)J. Massimo, P. Kampanakis, S. Turner, B. E. Westerbaan | Proposed Standard | October 2025 |
| 9955 | Hybrid Signature SpectrumsN. Bindel, B. Hale, D. Connolly, F. Driscoll | Informational | July 2026 |
| 9958 | Post-Quantum Cryptography for EngineersA. Banerjee, T. Reddy.K, D. Schoinianakis, T. Hollebeek, M. Ounsworth | Informational | June 2026 |