| 9846 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla | Proposed Standard | July 2026 |
| 9190 | EAP-TLS 1.3: Using the Extensible Authentication Protocol with TLS 1.3J. Preuß Mattsson, M. Sethi | Proposed Standard | February 2022 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8143 | Using Transport Layer Security (TLS) with Network News Transfer Protocol (NNTP)J. Elie | Proposed Standard | April 2017 |
| 7299 | Object Identifier Registry for the PKIX Working GroupR. Housley | Informational | July 2014 |
| 7252 | The Constrained Application Protocol (CoAP)Z. Shelby, K. Hartke, C. Bormann | Proposed Standard | June 2014 |
| 6728 | Configuration Data Model for the IP Flow Information Export (IPFIX) and Packet Sampling (PSAMP) ProtocolsG. Muenz, B. Claise, P. Aitken | Proposed Standard | October 2012 |
| 5755 | An Internet Attribute Certificate Profile for AuthorizationS. Farrell, R. Housley, S. Turner | Proposed Standard | January 2010 |
| 5734 | Extensible Provisioning Protocol (EPP) Transport over TCPS. Hollenbeck | Internet Standard | August 2009 |
| 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 |
| 5272 | Certificate Management over CMS (CMC)J. Schaad, M. Myers · obsoleted by RFC 10002 | Proposed Standard | June 2008 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5216 | The EAP-TLS Authentication ProtocolD. Simon, B. Aboba, R. Hurst | Proposed Standard | March 2008 |
| 5153 | IP Flow Information Export (IPFIX) Implementation GuidelinesE. Boschi, L. Mark, J. Quittek, M. Stiemerling, P. Aitken | Informational | April 2008 |
| 5126 | CMS Advanced Electronic Signatures (CAdES)D. Pinkas, N. Pope, J. Ross | Informational | March 2008 |
| 5113 | Network Discovery and Selection ProblemJ. Arkko, B. Aboba, J. Korhonen, Ed., F. Bari | Informational | January 2008 |
| 5101 | Specification of the IP Flow Information Export (IPFIX) Protocol for the Exchange of IP Traffic Flow InformationB. Claise, Ed. · obsoleted by RFC 7011 | Proposed Standard | January 2008 |
| 5081 | Using OpenPGP Keys for Transport Layer Security (TLS) AuthenticationN. Mavrogiannopoulos · obsoleted by RFC 6091 | Experimental | November 2007 |
| 5055 | Server-Based Certificate Validation Protocol (SCVP)T. Freeman, R. Housley, A. Malpani, D. Cooper, W. Polk | Proposed Standard | December 2007 |
| 5035 | Enhanced Security Services (ESS) Update: Adding CertID Algorithm AgilityJ. Schaad | Proposed Standard | August 2007 |
| 5026 | Mobile IPv6 Bootstrapping in Split ScenarioG. Giaretta, Ed., J. Kempf, V. Devarapalli, Ed. | Proposed Standard | October 2007 |
| 5024 | ODETTE File Transfer Protocol 2.0I. Friend | Informational | November 2007 |
| 5019 | The Lightweight Online Certificate Status Protocol (OCSP) Profile for High-Volume EnvironmentsA. Deacon, R. Hurst · obsoleted by RFC 9919 | Proposed Standard | September 2007 |
| 5018 | Connection Establishment in the Binary Floor Control Protocol (BFCP)G. Camarillo | Proposed Standard | September 2007 |
| 5008 | Suite B in Secure/Multipurpose Internet Mail Extensions (S/MIME)R. Housley, J. Solinas · obsoleted by RFC 6318 | Historic | September 2007 |
| 4998 | Evidence Record Syntax (ERS)T. Gondrom, R. Brandner, U. Pordesch | Proposed Standard | August 2007 |
| 4985 | Internet X.509 Public Key Infrastructure Subject Alternative Name for Expression of Service NameS. Santesson | Proposed Standard | August 2007 |
| 4976 | Relay Extensions for the Message Sessions Relay Protocol (MSRP)C. Jennings, R. Mahy, A. B. Roach | Proposed Standard | September 2007 |
| 4975 | The Message Session Relay Protocol (MSRP)B. Campbell, Ed., R. Mahy, Ed., C. Jennings, Ed. | Proposed Standard | September 2007 |
| 4954 | SMTP Service Extension for AuthenticationR. Siemborski, Ed., A. Melnikov, Ed. | Proposed Standard | July 2007 |
| 4949 | Internet Security Glossary, Version 2R. Shirey | Informational | August 2007 |
| 4945 | The Internet IP Security PKI Profile of IKEv1/ISAKMP, IKEv2, and PKIXB. Korver | Proposed Standard | August 2007 |
| 4934 | Extensible Provisioning Protocol (EPP) Transport Over TCPS. Hollenbeck · obsoleted by RFC 5734 | Draft Standard | May 2007 |
| 4851 | The Flexible Authentication via Secure Tunneling Extensible Authentication Protocol Method (EAP-FAST)N. Cam-Winget, D. McGrew, J. Salowey, H. Zhou | Informational | May 2007 |
| 4810 | Long-Term Archive Service RequirementsC. Wallace, U. Pordesch, R. Brandner | Informational | March 2007 |
| 4809 | Requirements for an IPsec Certificate Management ProfileC. Bonatti, Ed., S. Turner, Ed., G. Lebovitz, Ed. | Informational | February 2007 |
| 4806 | Online Certificate Status Protocol (OCSP) Extensions to IKEv2M. Myers, H. Tschofenig | Proposed Standard | February 2007 |
| 4768 | Desired Enhancements to Generic Security Services Application Program Interface (GSS-API) Version 3 NamingS. Hartman | Informational | December 2006 |
| 4746 | Extensible Authentication Protocol (EAP) Password Authenticated ExchangeT. Clancy, W. Arbaugh | Informational | November 2006 |
| 4705 | GigaBeam High-Speed Radio Link EncryptionR. Housley, A. Corry | Informational | October 2006 |
| 4682 | Multimedia Terminal Adapter (MTA) Management Information Base for PacketCable- and IPCablecom-Compliant DevicesE. Nechamkin, J-F. Mule | Proposed Standard | December 2006 |
| 4642 | Using Transport Layer Security (TLS) with Network News Transfer Protocol (NNTP)K. Murchison, J. Vinocur, C. Newman | Proposed Standard | October 2006 |
| 4630 | Update to DirectoryString Processing in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileR. Housley, S. Santesson · obsoleted by RFC 5280 | Proposed Standard | August 2006 |
| 4583 | Session Description Protocol (SDP) Format for Binary Floor Control Protocol (BFCP) StreamsG. Camarillo · obsoleted by RFC 8856 | Proposed Standard | November 2006 |
| 4572 | Connection-Oriented Media Transport over the Transport Layer Security (TLS) Protocol in the Session Description Protocol (SDP)J. Lennox · obsoleted by RFC 8122 | Proposed Standard | July 2006 |
| 4556 | Public Key Cryptography for Initial Authentication in Kerberos (PKINIT)L. Zhu, B. Tung | Proposed Standard | June 2006 |
| 4535 | GSAKMP: Group Secure Association Key Management ProtocolH. Harney, U. Meth, A. Colegrove, G. Gross | Proposed Standard | June 2006 |
| 4534 | Group Security Policy Token v1A. Colegrove, H. Harney | Proposed Standard | June 2006 |
| 4523 | Lightweight Directory Access Protocol (LDAP) Schema Definitions for X.509 CertificatesK. Zeilenga | Proposed Standard | June 2006 |
| 4492 | Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS)S. Blake-Wilson, N. Bolyard, V. Gupta, C. Hawk, B. Moeller · obsoleted by RFC 8422 | Informational | May 2006 |
| 4491 | Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL ProfileS. Leontiev, Ed., D. Shefanovski, Ed. | Proposed Standard | May 2006 |
| 4490 | Using the GOST 28147-89, GOST R 34.11-94, GOST R 34.10-94, and GOST R 34.10-2001 Algorithms with Cryptographic Message Syntax (CMS)S. Leontiev, Ed., G. Chudov, Ed. | Proposed Standard | May 2006 |
| 4476 | Attribute Certificate (AC) Policies ExtensionC. Francis, D. Pinkas | Proposed Standard | May 2006 |
| 4474 | Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings · obsoleted by RFC 8224 | Proposed Standard | August 2006 |
| 4398 | Storing Certificates in the Domain Name System (DNS)S. Josefsson | Proposed Standard | March 2006 |
| 4387 | Internet X.509 Public Key Infrastructure Operational Protocols: Certificate Store Access via HTTPP. Gutmann, Ed. | Proposed Standard | February 2006 |
| 4346 | The Transport Layer Security (TLS) Protocol Version 1.1T. Dierks, E. Rescorla · obsoleted by RFC 5246 | Historic | April 2006 |
| 4334 | Certificate Extensions and Attributes Supporting Authentication in Point-to-Point Protocol (PPP) and Wireless Local Area Networks (WLAN)R. Housley, T. Moore | Proposed Standard | February 2006 |
| 4325 | Internet X.509 Public Key Infrastructure Authority Information Access Certificate Revocation List (CRL) ExtensionS. Santesson, R. Housley · obsoleted by RFC 5280 | Proposed Standard | December 2005 |
| 4324 | Calendar Access Protocol (CAP)D. Royer, G. Babics, S. Mansour | Experimental | December 2005 |
| 4306 | Internet Key Exchange (IKEv2) ProtocolC. Kaufman, Ed. · obsoleted by RFC 5996 | Proposed Standard | December 2005 |
| 4301 | Security Architecture for the Internet ProtocolS. Kent, K. Seo | Proposed Standard | December 2005 |
| 4270 | Attacks on Cryptographic Hashes in Internet ProtocolsP. Hoffman, B. Schneier | Informational | December 2005 |
| 4262 | X.509 Certificate Extension for Secure/Multipurpose Internet Mail Extensions (S/MIME) CapabilitiesS. Santesson | Proposed Standard | December 2005 |
| 4261 | Common Open Policy Service (COPS) Over Transport Layer Security (TLS)J. Walker, A. Kulkarni, Ed. | Proposed Standard | December 2005 |
| 4211 | Internet X.509 Public Key Infrastructure Certificate Request Message Format (CRMF)J. Schaad | Proposed Standard | September 2005 |
| 4171 | Internet Storage Name Service (iSNS)J. Tseng, K. Gibbons, F. Travostino, C. Du Laney, J. Souza | Proposed Standard | September 2005 |
| 4158 | Internet X.509 Public Key Infrastructure: Certification Path BuildingM. Cooper, Y. Dzambasow, P. Hesse, S. Joseph, R. Nicholas | Informational | September 2005 |
| 4134 | Examples of S/MIME MessagesP. Hoffman, Ed. | Informational | July 2005 |
| 4130 | MIME-Based Secure Peer-to-Peer Business Data Interchange Using HTTP, Applicability Statement 2 (AS2)D. Moberg, R. Drummond | Proposed Standard | July 2005 |
| 4108 | Using Cryptographic Message Syntax (CMS) to Protect Firmware PackagesR. Housley | Proposed Standard | August 2005 |
| 4055 | Additional Algorithms and Identifiers for RSA Cryptography for use in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileJ. Schaad, B. Kaliski, R. Housley | Proposed Standard | June 2005 |
| 4046 | Multicast Security (MSEC) Group Key Management ArchitectureM. Baugher, R. Canetti, L. Dondeti, F. Lindholm | Informational | May 2005 |
| 4043 | Internet X.509 Public Key Infrastructure Permanent IdentifierD. Pinkas, T. Gindin | Proposed Standard | May 2005 |
| 3983 | Using the Internet Registry Information Service (IRIS) over the Blocks Extensible Exchange Protocol (BEEP)A. Newton, M. Sanz | Proposed Standard | January 2005 |
| 3972 | Cryptographically Generated Addresses (CGA)T. Aura | Proposed Standard | March 2005 |
| 3971 | SEcure Neighbor Discovery (SEND)J. Arkko, Ed., J. Kempf, B. Zill, P. Nikander | Proposed Standard | March 2005 |
| 3920 | Extensible Messaging and Presence Protocol (XMPP): CoreP. Saint-Andre, Ed. · obsoleted by RFC 6120 | Proposed Standard | October 2004 |
| 3887 | Message Tracking Query ProtocolT. Hansen | Proposed Standard | September 2004 |
| 3852 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 5652 | Proposed Standard | July 2004 |
| 3850 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Certificate HandlingB. Ramsdell, Ed. · obsoleted by RFC 5750 | Proposed Standard | July 2004 |
| 3830 | MIKEY: Multimedia Internet KEYingJ. Arkko, E. Carrara, F. Lindholm, M. Naslund, K. Norrman | Proposed Standard | August 2004 |
| 3820 | Internet X.509 Public Key Infrastructure (PKI) Proxy Certificate ProfileS. Tuecke, V. Welch, D. Engert, L. Pearlman, M. Thompson | Proposed Standard | June 2004 |
| 3792 | Survey of IPv4 Addresses in Currently Deployed IETF Security Area Standards Track and Experimental DocumentsP. Nesser, II, A. Bergstrom, Ed. | Informational | June 2004 |
| 3788 | Security Considerations for Signaling Transport (SIGTRAN) ProtocolsJ. Loughney, M. Tuexen, Ed., J. Pastor-Balbas | Proposed Standard | June 2004 |
| 3779 | X.509 Extensions for IP Addresses and AS IdentifiersC. Lynn, S. Kent, K. Seo | Proposed Standard | June 2004 |
| 3770 | Certificate Extensions and Attributes Supporting Authentication in Point-to-Point Protocol (PPP) and Wireless Local Area Networks (WLAN)R. Housley, T. Moore · obsoleted by RFC 4334 | Proposed Standard | May 2004 |
| 3739 | Internet X.509 Public Key Infrastructure: Qualified Certificates ProfileS. Santesson, M. Nystrom, T. Polk | Proposed Standard | March 2004 |
| 3709 | Internet X.509 Public Key Infrastructure: Logotypes in X.509 CertificatesS. Santesson, R. Housley, T. Freeman · obsoleted by RFC 9399 | Proposed Standard | February 2004 |
| 3652 | Handle System Protocol (ver 2.1) SpecificationS. Sun, S. Reilly, L. Lannom, J. Petrone | Informational | November 2003 |
| 3651 | Handle System Namespace and Service DefinitionS. Sun, S. Reilly, L. Lannom | Informational | November 2003 |
| 3647 | Internet X.509 Public Key Infrastructure Certificate Policy and Certification Practices FrameworkS. Chokhani, W. Ford, R. Sabett, C. Merrill, S. Wu | Informational | November 2003 |
| 3580 | IEEE 802.1X Remote Authentication Dial In User Service (RADIUS) Usage GuidelinesP. Congdon, B. Aboba, A. Smith, G. Zorn, J. Roese | Informational | September 2003 |
| 3579 | RADIUS (Remote Authentication Dial In User Service) Support For Extensible Authentication Protocol (EAP)B. Aboba, P. Calhoun | Informational | September 2003 |
| 3576 | Dynamic Authorization Extensions to Remote Authentication Dial In User Service (RADIUS)M. Chiba, G. Dommety, M. Eklund, D. Mitton, B. Aboba · obsoleted by RFC 5176 | Informational | July 2003 |
| 3560 | Use of the RSAES-OAEP Key Transport Algorithm in Cryptographic Message Syntax (CMS)R. Housley | Proposed Standard | July 2003 |
| 3552 | Guidelines for Writing RFC Text on Security ConsiderationsE. Rescorla, B. Korver | Best Current Practice | July 2003 |
| 3546 | Transport Layer Security (TLS) ExtensionsS. Blake-Wilson, M. Nystrom, D. Hopwood, J. Mikkelsen, T. Wright · obsoleted by RFC 4366 | Proposed Standard | June 2003 |
| 3520 | Session Authorization Policy ElementL-N. Hamer, B. Gage, B. Kosinski, H. Shieh | Proposed Standard | April 2003 |
| 3379 | Delegated Path Validation and Delegated Path Discovery Protocol RequirementsD. Pinkas, R. Housley | Informational | September 2002 |
| 3370 | Cryptographic Message Syntax (CMS) AlgorithmsR. Housley | Proposed Standard | September 2002 |
| 3369 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 3852 | Proposed Standard | September 2002 |
| 3281 | An Internet Attribute Certificate Profile for AuthorizationS. Farrell, R. Housley · obsoleted by RFC 5755 | Proposed Standard | May 2002 |
| 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 |
| 3278 | Use of Elliptic Curve Cryptography (ECC) Algorithms in Cryptographic Message Syntax (CMS)S. Blake-Wilson, D. Brown, P. Lambert · obsoleted by RFC 5753 | Informational | May 2002 |
| 3114 | Implementing Company Classification Policy with the S/MIME Security LabelW. Nicolls | Informational | May 2002 |