RFC 2313 · INFORMATIONAL · 1998
SUN · 14 JUN 2026
PKCS #1: RSA Encryption Version 1.5
Overview
RFC 2313, “PKCS #1: RSA Encryption Version 1.5”, is an Informational document published in March 1998 by B. Kaliski. It has been obsoleted by RFC 2437 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document describes a method for encrypting data using the RSA public-key cryptosystem. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 2313 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1998
- RFC 2312 S/MIME Version 2 Certificate Handling
- RFC 2314 PKCS #10: Certification Request Syntax Version 1.5
- RFC 2311 S/MIME Version 2 Message Specification
- RFC 2315 PKCS #7: Cryptographic Message Syntax Version 1.5
- RFC 2310 The Safe Response Header Field
- RFC 2316 Report of the IAB Security Architecture Workshop
- RFC 2309 Recommendations on Queue Management and Congestion Avoidance in the Internet
- RFC 2317 Classless IN-ADDR.ARPA delegation