NewPrep Problem Statement

Document Type Expired Internet-Draft (individual)
Author Marc Blanchet 
Last updated 2010-03-01
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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. New approach different from Stringprep/Nameprep is used for a revision of IDN. This document summarize the characteristics of both approach and provides guidance to protocol designers for handling internationalized strings.


Marc Blanchet (

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