Skip to main content

The UMAC-AE Authenticated-Encryption Algorithm

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Ted Krovetz
Last updated 2005-06-03
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document specifies UMAC-AE, a shared-key algorithm that simultaneously encrypts data using a block cipher in counter mode while also authenticating the data with UMAC. At its peak rate, using AES as the block cipher, UMAC-AE encrypts and authenticates data at a cost of about 10% more than simple encryption. UMAC is unencumbered by intellectual property claims and can be used freely. Pairing UMAC with a license-free block cipher, such as AES, provides fast and license-free authenticated encryption.


Ted Krovetz

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)