RFC 1113 · HISTORIC · 1989
SUN · 14 JUN 2026
Privacy enhancement for Internet electronic mail: Part I - message encipherment and authentication procedures
Overview
RFC 1113, “Privacy enhancement for Internet electronic mail: Part I - message encipherment and authentication procedures”, is a Historic document published in August 1989 by J. Linn. It obsoletes RFC 989, RFC 1040. It has been obsoleted by RFC 1421 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This RFC specifies features for private electronic mail based on encryption technology. [STANDARDS-TRACK]
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A specification that has been superseded or is otherwise no longer recommended for use.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 1113 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1989
- RFC 1112 Host extensions for IP multicasting
- RFC 1114 Privacy enhancement for Internet electronic mail: Part II - certificate-based key management
- RFC 1111 Request for comments on Request for Comments: Instructions to RFC authors
- RFC 1115 Privacy enhancement for Internet electronic mail: Part III - algorithms, modes, and identifiers
- RFC 1110 Problem with the TCP big window option
- RFC 1116 Telnet Linemode option
- RFC 1109 Report of the second Ad Hoc Network Management Review Group
- RFC 1117 Internet numbers