RFC 4432 · PROPOSED STANDARD · 2006

RSA Key Exchange for the Secure Shell Transport Layer Protocol

Overview

RFC 4432, “RSA Key Exchange for the Secure Shell Transport Layer Protocol”, is a Proposed Standard document published in March 2006 by B. Harris. It has since been updated by RFC 9142. The canonical text is published by the RFC Editor.

Abstract

This memo describes a key-exchange method for the Secure Shell (SSH) protocol based on Rivest-Shamir-Adleman (RSA) public-key encryption. It uses much less client CPU time than the Diffie-Hellman algorithm specified as part of the core protocol, and hence is particularly suitable for slow client systems. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 4432 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Updated by
RFC 9142
Other RFCs from 2006

Who Is Online

In total there are 47 users online: 0 registered, 40 guests and 7 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: AhrefsBot Applebot Bingbot Googlebot Other Bot SemrushBot Sogou

Users active in the past 15 minutes. Total registered members: 354