SASLprep: Stringprep Profile for User Names and Passwords
RFC 4013, “SASLprep: Stringprep Profile for User Names and Passwords”, is a Proposed Standard document published in March 2005 by K. Zeilenga. It has been obsoleted by RFC 7613 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document describes how to prepare Unicode strings representing user names and passwords for comparison. The document defines the "SASLprep" profile of the "stringprep" algorithm to be used for both user names and passwords. This profile is intended to be used by Simple Authentication and Security Layer (SASL) mechanisms (such as PLAIN, CRAM-MD5, and DIGEST-MD5), as well as other protocols exchanging simple user names and/or passwords. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 4013 is hosted at rfc-editor.org. Available in TXT,HTML.
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