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Status:

PROPOSED STANDARD

Obsoletes:

RFC 3454

Obsoleted by:

RFC 8264

Authors:

P. Saint-Andre
M. Blanchet

Stream:

IETF

Source:

precis (app)

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DOI:  https://doi.org/10.17487/RFC7564

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Abstract

Application protocols using Unicode characters in protocol stringsneed to properly handle such strings in order to enforceinternationalization rules for strings placed in various protocolslots (such as addresses and identifiers) and to perform validcomparison operations (e.g., for purposes of authentication orauthorization). This document defines a framework enablingapplication protocols to perform the preparation, enforcement, andcomparison of internationalized strings ("PRECIS") in a way thatdepends on the properties of Unicode characters and thus is agilewith respect to versions of Unicode. As a result, this frameworkprovides a more sustainable approach to the handling ofinternationalized strings than the previous framework, known asStringprep (RFC 3454). This document obsoletes RFC 3454.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.