| 3 | Documentation conventionsS.D. Crocker · obsoleted by RFC 10 | Unknown | April 1969 |
| 2630 | Cryptographic Message SyntaxR. Housley · obsoleted by RFC 3369, RFC 3370 | Proposed Standard | June 1999 |
| 2633 | S/MIME Version 3 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 3851 | Proposed Standard | June 1999 |
| 2634 | Enhanced Security Services for S/MIMEP. Hoffman, Ed. | Proposed Standard | June 1999 |
| 3029 | Internet X.509 Public Key Infrastructure Data Validation and Certification Server ProtocolsC. Adams, P. Sylvester, M. Zolotarev, R. Zuccherato | Experimental | February 2001 |
| 3114 | Implementing Company Classification Policy with the S/MIME Security LabelW. Nicolls | Informational | May 2002 |
| 3125 | Electronic Signature PoliciesJ. Ross, D. Pinkas, N. Pope | Experimental | September 2001 |
| 3126 | Electronic Signature Formats for long term electronic signaturesD. Pinkas, J. Ross, N. Pope · obsoleted by RFC 5126 | Informational | September 2001 |
| 3161 | Internet X.509 Public Key Infrastructure Time-Stamp Protocol (TSP)C. Adams, P. Cain, D. Pinkas, R. Zuccherato | Proposed Standard | August 2001 |
| 3183 | Domain Security Services using S/MIMET. Dean, W. Ottaway | Experimental | October 2001 |
| 3185 | Reuse of CMS Content Encryption KeysS. Farrell, S. Turner | Proposed Standard | October 2001 |
| 3211 | Password-based Encryption for CMSP. Gutmann · obsoleted by RFC 3369, RFC 3370 | Proposed Standard | December 2001 |
| 3274 | Compressed Data Content Type for Cryptographic Message Syntax (CMS)P. Gutmann | Proposed Standard | June 2002 |
| 3369 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 3852 | Proposed Standard | September 2002 |
| 3370 | Cryptographic Message Syntax (CMS) AlgorithmsR. Housley | Proposed Standard | September 2002 |
| 3537 | Wrapping a Hashed Message Authentication Code (HMAC) key with a Triple-Data Encryption Standard (DES) Key or an Advanced Encryption Standard (AES) KeyJ. Schaad, R. Housley | Proposed Standard | May 2003 |
| 3560 | Use of the RSAES-OAEP Key Transport Algorithm in Cryptographic Message Syntax (CMS)R. Housley | Proposed Standard | July 2003 |
| 3565 | Use of the Advanced Encryption Standard (AES) Encryption Algorithm in Cryptographic Message Syntax (CMS)J. Schaad | Proposed Standard | July 2003 |
| 3657 | Use of the Camellia Encryption Algorithm in Cryptographic Message Syntax (CMS)S. Moriai, A. Kato | Proposed Standard | January 2004 |
| 3851 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 5751 | Proposed Standard | July 2004 |
| 3852 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 5652 | Proposed Standard | July 2004 |
| 3855 | Transporting Secure/Multipurpose Internet Mail Extensions (S/MIME) Objects in X.400P. Hoffman, C. Bonatti | Proposed Standard | July 2004 |
| 4010 | Use of the SEED Encryption Algorithm in Cryptographic Message Syntax (CMS)J. Park, S. Lee, J. Kim, J. Lee | Proposed Standard | February 2005 |
| 4049 | BinaryTime: An Alternate Format for Representing Date and Time in ASN.1R. Housley · obsoleted by RFC 6019 | Experimental | April 2005 |
| 4073 | Protecting Multiple Contents with the Cryptographic Message Syntax (CMS)R. Housley | Proposed Standard | May 2005 |
| 4108 | Using Cryptographic Message Syntax (CMS) to Protect Firmware PackagesR. Housley | Proposed Standard | August 2005 |
| 4211 | Internet X.509 Public Key Infrastructure Certificate Request Message Format (CRMF)J. Schaad | Proposed Standard | September 2005 |
| 4998 | Evidence Record Syntax (ERS)T. Gondrom, R. Brandner, U. Pordesch | Proposed Standard | August 2007 |
| 5035 | Enhanced Security Services (ESS) Update: Adding CertID Algorithm AgilityJ. Schaad | Proposed Standard | August 2007 |
| 5055 | Server-Based Certificate Validation Protocol (SCVP)T. Freeman, R. Housley, A. Malpani, D. Cooper, W. Polk | Proposed Standard | December 2007 |
| 5083 | Cryptographic Message Syntax (CMS) Authenticated-Enveloped-Data Content TypeR. Housley | Proposed Standard | November 2007 |
| 5084 | Using AES-CCM and AES-GCM Authenticated Encryption in the Cryptographic Message Syntax (CMS)R. Housley | Proposed Standard | November 2007 |
| 5126 | CMS Advanced Electronic Signatures (CAdES)D. Pinkas, N. Pope, J. Ross | Informational | March 2008 |
| 5226 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 8126 | Best Current Practice | May 2008 |
| 5272 | Certificate Management over CMS (CMC)J. Schaad, M. Myers · obsoleted by RFC 10002 | Proposed Standard | June 2008 |
| 5275 | CMS Symmetric Key Management and DistributionS. Turner | Proposed Standard | June 2008 |
| 5485 | Digital Signatures on Internet-Draft DocumentsR. Housley | Informational | March 2009 |
| 5544 | Syntax for Binding Documents with Time-StampsA. Santoni | Informational | February 2010 |
| 5649 | Advanced Encryption Standard (AES) Key Wrap with Padding AlgorithmR. Housley, M. Dworkin | Informational | September 2009 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |
| 5752 | Multiple Signatures in Cryptographic Message Syntax (CMS)S. Turner, J. Schaad | Proposed Standard | January 2010 |
| 5753 | Use of Elliptic Curve Cryptography (ECC) Algorithms in Cryptographic Message Syntax (CMS)S. Turner, D. Brown | Informational | January 2010 |
| 5755 | An Internet Attribute Certificate Profile for AuthorizationS. Farrell, R. Housley, S. Turner | Proposed Standard | January 2010 |
| 5911 | New ASN.1 Modules for Cryptographic Message Syntax (CMS) and S/MIMEP. Hoffman, J. Schaad | Informational | June 2010 |
| 5914 | Trust Anchor FormatR. Housley, S. Ashmore, C. Wallace | Proposed Standard | June 2010 |
| 5958 | Asymmetric Key PackagesS. Turner | Proposed Standard | August 2010 |
| 5990 | Use of the RSA-KEM Key Transport Algorithm in the Cryptographic Message Syntax (CMS)J. Randall, B. Kaliski, J. Brainard, S. Turner · obsoleted by RFC 9690 | Proposed Standard | September 2010 |
| 6010 | Cryptographic Message Syntax (CMS) Content Constraints ExtensionR. Housley, S. Ashmore, C. Wallace | Proposed Standard | September 2010 |
| 6031 | Cryptographic Message Syntax (CMS) Symmetric Key Package Content TypeS. Turner, R. Housley | Proposed Standard | December 2010 |
| 6032 | Cryptographic Message Syntax (CMS) Encrypted Key Package Content TypeS. Turner, R. Housley | Proposed Standard | December 2010 |
| 6210 | Experiment: Hash Functions with Parameters in the Cryptographic Message Syntax (CMS) and S/MIMEJ. Schaad | Experimental | April 2011 |
| 6211 | Cryptographic Message Syntax (CMS) Algorithm Identifier Protection AttributeJ. Schaad | Proposed Standard | April 2011 |
| 6268 | Additional New ASN.1 Modules for the Cryptographic Message Syntax (CMS) and the Public Key Infrastructure Using X.509 (PKIX)J. Schaad, S. Turner | Informational | July 2011 |
| 6476 | Using Message Authentication Code (MAC) Encryption in the Cryptographic Message Syntax (CMS)P. Gutmann | Proposed Standard | January 2012 |
| 6482 | A Profile for Route Origin Authorizations (ROAs)M. Lepinski, S. Kent, D. Kong · obsoleted by RFC 9582 | Proposed Standard | February 2012 |
| 6486 | Manifests for the Resource Public Key Infrastructure (RPKI)R. Austein, G. Huston, S. Kent, M. Lepinski · obsoleted by RFC 9286 | Proposed Standard | February 2012 |
| 6493 | The Resource Public Key Infrastructure (RPKI) Ghostbusters RecordR. Bush | Historic | February 2012 |
| 7030 | Enrollment over Secure TransportM. Pritikin, Ed., P. Yee, Ed., D. Harkins, Ed. | Proposed Standard | October 2013 |