UPDATED: XEP-0420 (Stanza Content Encryption)

Version 0.5.0 of XEP-0420 (Stanza Content Encryption) has been
released.

Abstract:
The Stanza Content Encryption (SCE) protocol is intended as a way to
allow clients to securely exchange arbitrary extension elements using
different end-to-end encryption schemes.

Changelog:
The time affix uses the DateTime profile of XEP-0082
Longer rpads MUST NOT be rejected
Add a minimum size target for random padding to add resistance against
potential correlation attacks in case of short content and 0-length
rpad
Removed unhelpful Implementation Note warning about injection of
decrypted stanzas
Clarify fallback body policy
Fix descriptions to apply to all stanzas instead of just messages
Remove questionable SHOULD in the time affix handling and clarify the
affix'es verification
Request the registrar to provide a list of exclusively server-
processed elements
List XEP dependencies
Add XML schema (syndace)

URL: https://xmpp.org/extensions/xep-0420.html

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