RFC 3174 · INFORMATIONAL · 2001
SUN · 14 JUN 2026
US Secure Hash Algorithm 1
Overview
RFC 3174, “US Secure Hash Algorithm 1”, is an Informational document published in September 2001 by D. Eastlake 3rd, P. Jones. It has since been updated by RFC 4634, RFC 6234. The canonical text is published by the RFC Editor.
Abstract
The purpose of this document is to make the SHA-1 (Secure Hash Algorithm 1) hash algorithm conveniently available to the Internet community. This memo provides information for the Internet community.
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 3174 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2001
- RFC 3173 IP Payload Compression Protocol
- RFC 3175 Aggregation of RSVP for IPv4 and IPv6 Reservations
- RFC 3172 Management Guidelines & Operational Requirements for the Address and Routing Parameter Area Domain
- RFC 3176 InMon Corporation's sFlow: A Method for Monitoring Traffic in Switched and Routed Networks
- RFC 3171 IANA Guidelines for IPv4 Multicast Address Assignments
- RFC 3177 IAB/IESG Recommendations on IPv6 Address Allocations to Sites
- RFC 3170 IP Multicast Applications: Challenges and Solutions
- RFC 3178 IPv6 Multihoming Support at Site Exit Routers