| 10008 | The HTTP QUERY MethodJ. Reschke, J.M. Snell, M. Bishop | Proposed Standard | June 2026 |
| 9930 | Tunnel Extensible Authentication Protocol (TEAP) Version 1A. DeKok, Ed. | Proposed Standard | February 2026 |
| 9908 | Clarification and Enhancement of the CSR Attributes Definition in RFC 7030M. Richardson, Ed., O. Friel, D. von Oheimb, D. Harkins | Proposed Standard | January 2026 |
| 9891 | Automated Certificate Management Environment (ACME) Delay-Tolerant Networking (DTN) Node ID Validation ExtensionB. Sipos | Experimental | November 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 |
| 9480 | Certificate Management Protocol (CMP) UpdatesH. Brockhaus, D. von Oheimb, J. Gray · obsoleted by RFC 9810, RFC 9811 | Proposed Standard | November 2023 |
| 9152 | Secure Object Delivery Protocol (SODP) Server Interfaces: NSA's Profile for Delivery of Certificates, Certificate Revocation Lists (CRLs), and Symmetric Keys to ClientsM. Jenkins, S. Turner | Informational | April 2022 |
| 8951 | Clarification of Enrollment over Secure Transport (EST): Transfer Encodings and ASN.1M. Richardson, T. Werner, W. Pan | Proposed Standard | November 2020 |
| 8894 | Simple Certificate Enrolment ProtocolP. Gutmann | Informational | September 2020 |
| 8823 | Extensions to Automatic Certificate Management Environment for End-User S/MIME CertificatesA. Melnikov | Informational | April 2021 |
| 8555 | Automatic Certificate Management Environment (ACME)R. Barnes, J. Hoffman-Andrews, D. McCarney, J. Kasten | Proposed Standard | March 2019 |
| 8550 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate HandlingJ. Schaad, B. Ramsdell, S. Turner | Proposed Standard | April 2019 |
| 8295 | EST (Enrollment over Secure Transport) ExtensionsS. Turner | Proposed Standard | January 2018 |
| 7894 | Alternative Challenge Password Attributes for Enrollment over Secure TransportM. Pritikin, C. Wallace | Proposed Standard | June 2016 |
| 7292 | PKCS #12: Personal Information Exchange Syntax v1.1K. Moriarty, Ed., M. Nystrom, S. Parkinson, A. Rusch, M. Scott | Informational | July 2014 |
| 7170 | Tunnel Extensible Authentication Protocol (TEAP) Version 1H. Zhou, N. Cam-Winget, J. Salowey, S. Hanna · obsoleted by RFC 9930 | Proposed Standard | May 2014 |
| 7030 | Enrollment over Secure TransportM. Pritikin, Ed., P. Yee, Ed., D. Harkins, Ed. | Proposed Standard | October 2013 |
| 6487 | A Profile for X.509 PKIX Resource CertificatesG. Huston, G. Michaelson, R. Loomans | Proposed Standard | February 2012 |
| 5958 | Asymmetric Key PackagesS. Turner | Proposed Standard | August 2010 |
| 5750 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Certificate HandlingB. Ramsdell, S. Turner · obsoleted by RFC 8550 | Proposed Standard | January 2010 |
| 5636 | Traceable Anonymous CertificateS. Park, H. Park, Y. Won, J. Lee, S. Kent | Experimental | August 2009 |
| 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 |
| 3850 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Certificate HandlingB. Ramsdell, Ed. · obsoleted by RFC 5750 | Proposed Standard | July 2004 |
| 3739 | Internet X.509 Public Key Infrastructure: Qualified Certificates ProfileS. Santesson, M. Nystrom, T. Polk | Proposed Standard | March 2004 |
| 3039 | Internet X.509 Public Key Infrastructure Qualified Certificates ProfileS. Santesson, W. Polk, P. Barzin, M. Nystrom · obsoleted by RFC 3739 | Proposed Standard | January 2001 |