summaryrefslogtreecommitdiff
path: root/doc/rfc/rfc6452.txt
diff options
context:
space:
mode:
Diffstat (limited to 'doc/rfc/rfc6452.txt')
-rw-r--r--doc/rfc/rfc6452.txt227
1 files changed, 227 insertions, 0 deletions
diff --git a/doc/rfc/rfc6452.txt b/doc/rfc/rfc6452.txt
new file mode 100644
index 0000000..e372d1c
--- /dev/null
+++ b/doc/rfc/rfc6452.txt
@@ -0,0 +1,227 @@
+
+
+
+
+
+
+Internet Engineering Task Force (IETF) P. Faltstrom, Ed.
+Request for Comments: 6452 Cisco
+Category: Standards Track P. Hoffman, Ed.
+ISSN: 2070-1721 VPN Consortium
+ November 2011
+
+
+ The Unicode Code Points and
+ Internationalized Domain Names for Applications (IDNA) - Unicode 6.0
+
+Abstract
+
+ This memo documents IETF consensus for Internationalized Domain Names
+ for Applications (IDNA) derived character properties related to the
+ three code points, existing in Unicode 5.2, that changed property
+ values when version 6.0 was released. The consensus is that no
+ update is needed to RFC 5892 based on the changes made in Unicode
+ 6.0.
+
+Status of This Memo
+
+ This is an Internet Standards Track document.
+
+ This document is a product of the Internet Engineering Task Force
+ (IETF). It represents the consensus of the IETF community. It has
+ received public review and has been approved for publication by the
+ Internet Engineering Steering Group (IESG). Further information on
+ Internet Standards is available in Section 2 of RFC 5741.
+
+ Information about the current status of this document, any errata,
+ and how to provide feedback on it may be obtained at
+ http://www.rfc-editor.org/info/rfc6452.
+
+Copyright Notice
+
+ Copyright (c) 2011 IETF Trust and the persons identified as the
+ document authors. All rights reserved.
+
+ This document is subject to BCP 78 and the IETF Trust's Legal
+ Provisions Relating to IETF Documents
+ (http://trustee.ietf.org/license-info) in effect on the date of
+ publication of this document. Please review these documents
+ carefully, as they describe your rights and restrictions with respect
+ to this document. Code Components extracted from this document must
+ include Simplified BSD License text as described in Section 4.e of
+ the Trust Legal Provisions and are provided without warranty as
+ described in the Simplified BSD License.
+
+
+
+
+Faltstrom & Hoffman Standards Track [Page 1]
+
+RFC 6452 IDNA Code Points November 2011
+
+
+Table of Contents
+
+ 1. Introduction ....................................................2
+ 1.1. U+0CF1 KANNADA SIGN JIHVAMULIYA ............................2
+ 1.2. U+0CF2 KANNADA SIGN UPADHMANIYA ............................2
+ 1.3. U+19DA NEW TAI LUE THAM DIGIT ONE ..........................2
+ 2. IETF Consensus ..................................................2
+ 3. IANA Considerations .............................................3
+ 4. Security Considerations .........................................3
+ 5. Acknowledgements ................................................3
+ 6. Normative References ............................................3
+
+1. Introduction
+
+ RFC 5892 [RFC5892] specifies an algorithm that was defined when
+ version 5.0 (later updated to version 5.2) [Unicode5.2] was the
+ current version of Unicode, and it also defines a derived property
+ value based on that algorithm. Unicode 6.0 [Unicode6] has changed
+ GeneralCategory of three code points that were allocated in
+ Unicode 5.2 or earlier. This implies that the derived property value
+ differs depending on whether the property definitions used are from
+ Unicode 5.2 or 6.0. These are non-backward-compatible changes as
+ described in Section 5.1 of RFC 5892.
+
+ The three code points are:
+
+1.1. U+0CF1 KANNADA SIGN JIHVAMULIYA
+
+ The GeneralCategory for this character changes from So to Lo. This
+ implies that the derived property value changes from DISALLOWED to
+ PVALID.
+
+1.2. U+0CF2 KANNADA SIGN UPADHMANIYA
+
+ The GeneralCategory for this character changes from So to Lo. This
+ implies that the derived property value changes from DISALLOWED to
+ PVALID.
+
+1.3. U+19DA NEW TAI LUE THAM DIGIT ONE
+
+ The GeneralCategory for this character changes from Nd to No. This
+ implies that the derived property value changes from PVALID to
+ DISALLOWED.
+
+2. IETF Consensus
+
+ No change to RFC 5892 is needed based on the changes made in
+ Unicode 6.0.
+
+
+
+Faltstrom & Hoffman Standards Track [Page 2]
+
+RFC 6452 IDNA Code Points November 2011
+
+
+ This consensus does not imply that no changes will be made to
+ RFC 5892 for all future updates of The Unicode Standard.
+
+ This RFC has been produced because 6.0 is the first version of
+ Unicode to be released since IDNA2008 was published.
+
+3. IANA Considerations
+
+ IANA has updated the derived property value registry according to
+ RFC 5892 and the property values defined in The Unicode Standard
+ version 6.0.
+
+4. Security Considerations
+
+ When the algorithm presented in RFC 5892 is applied using the
+ property definitions of Unicode Standard version 6.0, the result will
+ be different from when it is applied using the property definitions
+ of Unicode 5.2 for the three code points discussed in this document.
+ The three code points are unlikely to occur in internationalized
+ domain names, however, so the security implications of the changes
+ are minor.
+
+5. Acknowledgements
+
+ The main contributors are (in alphabetical order) Eric Brunner-
+ Williams, Vint Cerf, Tina Dam, Mark Davis, Martin Duerst, John
+ Klensin, Pete Resnick, Markus Scherer, Andrew Sullivan, Kenneth
+ Whistler, and Nicholas Williams.
+
+ Not all contributors believe that the solution for the issues
+ discussed in this document is optimal.
+
+6. Normative References
+
+ [RFC5892] Faltstrom, P., Ed., "The Unicode Code Points and
+ Internationalized Domain Names for Applications
+ (IDNA)", RFC 5892, August 2010.
+
+ [Unicode5.2] The Unicode Consortium, "The Unicode Standard,
+ Version 5.2.0", Unicode 5.0.0, Boston, MA,
+ Addison-Wesley ISBN 0-321-48091-0, as amended
+ by Unicode 5.2.0, October 2009,
+ <http://www.unicode.org/versions/Unicode5.2.0/>.
+
+ [Unicode6] The Unicode Consortium, "The Unicode Standard,
+ Version 6.0.0", October 2010,
+ <http://www.unicode.org/versions/Unicode6.0.0/>.
+
+
+
+
+Faltstrom & Hoffman Standards Track [Page 3]
+
+RFC 6452 IDNA Code Points November 2011
+
+
+Authors' Addresses
+
+ Patrik Faltstrom (editor)
+ Cisco
+
+ EMail: paf@cisco.com
+
+
+ Paul Hoffman (editor)
+ VPN Consortium
+
+ EMail: paul.hoffman@vpnc.org
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Faltstrom & Hoffman Standards Track [Page 4]
+