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Stringprep Revision Problem Statement

Document type: Replaced Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2010-10-27 (latest revision 2010-07-05)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-precis-problem-statement
Responsible AD: (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


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)