| 9052 | CBOR Object Signing and Encryption (COSE): Structures and ProcessJ. Schaad | Internet Standard | August 2022 |
| 8551 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message SpecificationJ. Schaad, B. Ramsdell, S. Turner | Proposed Standard | April 2019 |
| 8550 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate HandlingJ. Schaad, B. Ramsdell, S. Turner | Proposed Standard | April 2019 |
| 8152 | CBOR Object Signing and Encryption (COSE)J. Schaad · obsoleted by RFC 9052, RFC 9053 | Proposed Standard | July 2017 |
| 7107 | Object Identifier Registry for the S/MIME Mail Security Working GroupR. Housley | Informational | January 2014 |
| 7030 | Enrollment over Secure TransportM. Pritikin, Ed., P. Yee, Ed., D. Harkins, Ed. | Proposed Standard | October 2013 |
| 6664 | S/MIME Capabilities for Public Key DefinitionsJ. Schaad | Informational | July 2012 |
| 5967 | The application/pkcs10 Media TypeS. Turner | Informational | August 2010 |
| 5751 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Message SpecificationB. Ramsdell, S. Turner · obsoleted by RFC 8551 | Proposed Standard | January 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 |
| 5652 | Cryptographic Message Syntax (CMS)R. Housley | Internet Standard | September 2009 |
| 4086 | Randomness Requirements for SecurityD. Eastlake 3rd, J. Schiller, S. Crocker | Best Current Practice | June 2005 |
| 3853 | S/MIME Advanced Encryption Standard (AES) Requirement for the Session Initiation Protocol (SIP)J. Peterson | Proposed Standard | July 2004 |
| 3851 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 5751 | Proposed Standard | July 2004 |
| 3819 | Advice for Internet Subnetwork DesignersP. Karn, Ed., C. Bormann, G. Fairhurst, D. Grossman, R. Ludwig, J. Mahdavi, G. Montenegro, J. Touch, L. Wood | Best Current Practice | July 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 |
| 3657 | Use of the Camellia Encryption Algorithm in Cryptographic Message Syntax (CMS)S. Moriai, A. Kato | Proposed Standard | January 2004 |
| 3565 | Use of the Advanced Encryption Standard (AES) Encryption Algorithm in Cryptographic Message Syntax (CMS)J. Schaad | Proposed Standard | July 2003 |
| 3562 | Key Management Considerations for the TCP MD5 Signature OptionM. Leech | 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 |
| 3369 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 3852 | Proposed Standard | September 2002 |
| 3335 | MIME-based Secure Peer-to-Peer Business Data Interchange over the InternetT. Harding, R. Drummond, C. Shih | Proposed Standard | September 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 |
| 3274 | Compressed Data Content Type for Cryptographic Message Syntax (CMS)P. Gutmann | Proposed Standard | June 2002 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3183 | Domain Security Services using S/MIMET. Dean, W. Ottaway | Experimental | October 2001 |
| 3058 | Use of the IDEA Encryption Algorithm in CMSS. Teiwes, P. Hartmann, D. Kuenzi | Informational | February 2001 |
| 2985 | PKCS #9: Selected Object Classes and Attribute Types Version 2.0M. Nystrom, B. Kaliski | Informational | November 2000 |
| 2876 | Use of the KEA and SKIPJACK Algorithms in CMSJ. Pawling | Informational | July 2000 |
| 2828 | Internet Security GlossaryR. Shirey · obsoleted by RFC 4949 | Informational | May 2000 |
| 2798 | Definition of the inetOrgPerson LDAP Object ClassM. Smith | Informational | April 2000 |
| 2797 | Certificate Management Messages over CMSM. Myers, X. Liu, J. Schaad, J. Weinstein · obsoleted by RFC 5272 | Proposed Standard | April 2000 |
| 2785 | Methods for Avoiding the "Small-Subgroup" Attacks on the Diffie-Hellman Key Agreement Method for S/MIMER. Zuccherato | Informational | March 2000 |
| 2654 | A Tagged Index Object for use in the Common Indexing ProtocolR. Hedberg, B. Greenblatt, R. Moats, M. Wahl | Experimental | August 1999 |
| 2634 | Enhanced Security Services for S/MIMEP. Hoffman, Ed. | Proposed Standard | June 1999 |
| 2632 | S/MIME Version 3 Certificate HandlingB. Ramsdell, Ed. · obsoleted by RFC 3850 | Proposed Standard | June 1999 |
| 2630 | Cryptographic Message SyntaxR. Housley · obsoleted by RFC 3369, RFC 3370 | Proposed Standard | June 1999 |