[cabfpub] New proposed text for BR 1.1 issues 15 and 29

[Hill, Brad]

Updated proposal attached.

Changes:


*         Updated rules for IDN hostname labels to "label components" to allow, e.g. non-Latin scripts to be combined with Latin gTLD suffixes such as ".com"

*         Updated IDNA requirements such that hostnames must be valid in EITHER IDNA2003 or IDNA2008.  Opera is currently the only browser that supports IDNA2008, Mozilla has a bug to support it, and WebKit apparently has no current plans to implement IDNA2008.  Allowing both standards allows maximum compatibility, though there is some risk as some names that are valid in one but not the other, and some which are valid in both but resolve to different effective host names.

*         Updated the Unicode Security Mechanisms Restriction Levels and Alerts reference which has moved from UTR #36 to UTS #39 in the last few weeks.

Brad Hill
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