RFC 9549: Internationalization Updates to RFC 5280
Recent RFCs 2024-03-12
Summary:
The updates to RFC 5280 described in this document provide alignment
with the 2008 specification for Internationalized Domain Names (IDNs)
and includes support for internationalized email addresses in X.509
certificates. The updates ensure that name constraints for email
addresses that contain only ASCII characters and internationalized
email addresses are handled in the same manner. This document
obsoletes RFC 8399.