RFC 2311 · HISTORIC · 1998
SUN · 14 JUN 2026
S/MIME Version 2 Message Specification
Overview
RFC 2311, “S/MIME Version 2 Message Specification”, is a Historic document published in March 1998 by S. Dusse, P. Hoffman, B. Ramsdell, L. Lundblade, L. Repka. The canonical text is published by the RFC Editor.
Abstract
This document describes a protocol for adding cryptographic signature and encryption services to MIME data. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.
What “Historic” means
A specification that has been superseded or is otherwise no longer recommended for use.
Read this RFC
The canonical text of RFC 2311 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1998
- RFC 2310 The Safe Response Header Field
- RFC 2312 S/MIME Version 2 Certificate Handling
- RFC 2309 Recommendations on Queue Management and Congestion Avoidance in the Internet
- RFC 2313 PKCS #1: RSA Encryption Version 1.5
- RFC 2308 Negative Caching of DNS Queries
- RFC 2314 PKCS #10: Certification Request Syntax Version 1.5
- RFC 2307 An Approach for Using LDAP as a Network Information Service
- RFC 2315 PKCS #7: Cryptographic Message Syntax Version 1.5