Stringprep Revision Problem Statement

Document Type Replaced Internet-Draft (individual)
Last updated 2010-10-27 (latest revision 2010-07-05)
Replaced by draft-ietf-precis-problem-statement
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-problem-statement
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This Internet-Draft is no longer active.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


Using Unicode codepoints in protocol strings requires preparation of the string. Internationalized Domain Names(idn) initial work defined and used Stringprep and Nameprep. Other protocols have defined Stringprep profiles. A new approach different from Stringprep/ Nameprep is used for a revision of IDN. The Stringprep profiles need to be updated or a replacement of Stringprep need to be designed. This document summarizes the findings of the current usage of Stringprep and identifies directions for a new Stringprep replacement protocol.


Marc Blanchet (

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