Skip to main content
U.S. flag

An official website of the United States government

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.

NIST Publishes IR 8459, Report on the Block Cipher Modes of Operation in the SP 800-38 Series

NIST is pleased to announce the release of Internal Report (IR) 8459, Report on the Block Cipher Modes of Operation in the NIST SP 800-38 Series.

Released September 10, 2024