Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Announcing a Public Workshop on Cryptographic Hash
June 14, 2005

A vulnerability was recently identified in the NIST-approved cryptographic hash algorithm, Secure Hash Algorithm-1 (SHA-1). In response, NIST is announcing a public workshop to discuss this vulnerability, assess the status of other NIST-approved hash algorithms, and discuss possible near- and long-term options.

Federal Register Notice

Document Number: 05-11729
Created December 16, 2016, Updated June 22, 2020