Preparation and Comparison of Internationalized Strings Representing Simple User Names and Passwords

Document Type Replaced Internet-Draft (individual)
Last updated 2013-02-19 (latest revision 2012-09-23)
Replaced by draft-ietf-precis-saslprepbis
Stream (None)
Intended RFC status (None)
Expired & archived
plain text pdf html
Stream Stream state (No stream defined)
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-precis-saslprepbis
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes how to handle Unicode strings representing simple user names and passwords, primarily for purposes of comparison. This profile is intended to be used by Simple Authentication and Security Layer (SASL) mechanisms (such as PLAIN and SCRAM-SHA-1), as well as other protocols that exchange simple user names or passwords. This document obsoletes RFC 4013.


Peter Saint-Andre (
Alexey Melnikov (

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