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Character Normalization in IETF Protocols

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Martin J. Dürst , Mark Davis
Last updated 2000-09-13
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This Internet-Draft is no longer active.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:


The Universal Character Set (UCS) [ISO10646, Unicode] covers a very wide repertoire of characters. The IETF, in [RFC 2277], requires that future IETF protocols support UTF-8 [RFC 2279], an ASCII-compatible encoding of UCS. The wide range of characters included in the UCS has lead to some cases of duplicate encodings. This document proposes that in IETF protocols, the class of duplicates called canonical equivalents be dealt with by using Early Uniform Normalization according to Unicode Normalization Form C, Canonical Composition (NFC) [UTR15]. This document describes both Early Uniform Normalization and Normalization Form C.


Martin J. Dürst
Mark Davis

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