PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 43
Abstract: Application protocols using Unicode code points in protocol strings need to properly handle such strings in order to enforce internationalization rules for strings placed in various protocol slots (such as addresses and identifiers) and to perform valid comparison operations (e.g., for purposes of authentication or authorization). This document defines a framework enabling application protocols to perform the preparation, enforcement, and comparison of internationalized strings ("PRECIS") in a way that depends on the properties of Unicode code points and thus is more agile with respect to versions of Unicode. As a result, this framework provides a more sustainable approach to the handling of internationalized strings than the previous framework, known as Stringprep (RFC 3454). This document obsoletes RFC 7564.
Publication Date: 2017-10-01
Status Note: Proposed Standard
DOI: 10.17487/RFC8264
Link: https://doi.org/10.17487/RFC8264
Author(s): Peter Saint-Andre
Marc Blanchet
Keyword(s): Internationalization, Stringprep

Latest version of IETF RFC 8264

Document Versions — IETF RFC 8264

▶ IETF RFC 8264 (2017-10-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

The Unicode Consortium, "The Unicode Standard", < http://www.unicode.org/versions/latest/ >. EXTERNAL
IETF RFC 20 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 5198 [Active*]
IETF RFC 6365 [Active*]
IETF RFC 8174 [Active*]

Bibliographic Reference(s)

IETF.draft-klensin-idna-5892upd-unicode70-04 — IDNA-Unicode EXTERNAL
Unicode Technical Standard #39, "Unicode Security Mechanisms", edited by Mark Davis and Michel Suignard, < http://unicode.org/reports/tr39/ >. EXTERNAL
Internet Architecture Board, "IAB Statement on Identifiers and Unicode 7.0.0", February 2015, < https://www.iab.org/documents/ correspondence-reports-documents/2015-2/ iab-statement-on-identifiers-and-unicode-7-0-0/ >. EXTERNAL
Unicode Standard Annex #9, "Unicode Bidirectional Algorithm", edited by Mark Davis, Aharon Lanin, and Andrew Glass. An integral part of The Unicode Standard, < http://unicode.org/reports/tr9/ >. EXTERNAL
Unicode Standard Annex #11, "East Asian Width", edited by Ken Lunde. An integral part of The Unicode Standard, < http://unicode.org/reports/tr11/ >. EXTERNAL
The Unicode Consortium, "DerivedCoreProperties- 10.0.0.txt", Unicode Character Database, March 2017, < http://www.unicode.org/Public/UCD/latest/ucd/ DerivedCoreProperties.txt >. EXTERNAL
Unicode Standard Annex #15, "Unicode Normalization Forms", edited by Mark Davis and Ken Whistler. An integral part of The Unicode Standard, < http://unicode.org/reports/tr15/ >. EXTERNAL
The Unicode Consortium, "PropertyAliases-10.0.0.txt", Unicode Character Database, February 2017, < http://www.unicode.org/Public/UCD/latest/ucd/ PropertyAliases.txt >. EXTERNAL
Unicode Technical Report #36, "Unicode Security Considerations", edited by Mark Davis and Michel Suignard, < http://unicode.org/reports/tr36/ >. EXTERNAL
IETF RFC 2865 [Active*]
IETF RFC 3454 [Superseded*]
IETF RFC 3490 [Superseded*]
IETF RFC 3491 [Superseded*]
IETF RFC 3629 [Active*]
IETF RFC 4422 [Active*]
IETF RFC 4510 [Active*]
IETF RFC 4690 [Active*]
IETF RFC 5234 [Active, Amended*]
IETF RFC 5246 [Superseded*]
IETF RFC 5890 [Active*]
IETF RFC 5891 [Active*]
IETF RFC 5892 [Active*]
IETF RFC 5893 [Active*]
IETF RFC 5894 [Active*]
IETF RFC 5895 [Active*]
RFC6452 — RFC6452 EXTERNAL
IETF RFC 6885 [Active*]
IETF RFC 6943 [Active*]
IETF RFC 7564 [Superseded*]
IETF RFC 7622 [Active*]
RFC7790 — RFC7790 EXTERNAL
IETF RFC 8126 [Active*]
IETF RFC 8265 [Active*]
RFC8266 — RFC8266 EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/RFC8264.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

IETF RFC 8264, PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols. Available at https://doi.org/10.17487/RFC8264

Snippet:

IETF RFC 8264, PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols. Available at https://doi.org/10.17487/RFC8264

HTML (ISO 690 compliant)

Preview:

IETF RFC 8264, PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols. Available at https://doi.org/10.17487/RFC8264

Snippet:

<span class="citation"><cite>IETF RFC 8264</cite>, PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols. Available at <a href="https://doi.org/10.17487/RFC8264" target="_blank" rel="noopener">https://doi.org/10.17487/RFC8264</a></span>

SMPTE's HTML Pub

Preview:

IETF RFC 8264, PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols
doi: 10.17487/RFC8264
url: https://doi.org/10.17487/RFC8264

Snippet:

<li>
<cite id="bib-rfc8264">IETF RFC 8264</cite>, PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols
<span class="doi">10.17487/RFC8264</span>
</li>

Referenced By

IETF RFC 8265 [Active*]
IETF RFC 8489 [Active*]