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Support for Internationalized Email Addresses (EAI) in X.509 certificates

Support for Internationalized Email Addresses (EAI) in X.509 certificates. Alexey Melnikov <alexey.melnikov@isode.com> draft-ietf-pkix-eai-addresses-00.txt. Background. EAI WG in the Applications Area is working toward completing rfc5335bis/rfc5336bis rfc5336bis defines I18N email format as

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Support for Internationalized Email Addresses (EAI) in X.509 certificates

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  1. Support for Internationalized Email Addresses (EAI) in X.509 certificates Alexey Melnikov <alexey.melnikov@isode.com> draft-ietf-pkix-eai-addresses-00.txt

  2. Background • EAI WG in the Applications Area is working toward completing rfc5335bis/rfc5336bis • rfc5336bis defines I18N email format as • <utf-8>@<utf-8> or <utf-8>@<ascii> • e.g. Aлексей.Мельников@ёлка.мойдомен.РФ • RFC 5280 defines rfc822Name subjectAltName choice for representing RFC 5322 email addresses, but that is not sufficient for the new format

  3. Open Issues • Multiple aliases • for the left hand side of I18N emails • More importantly: multiple aliases for the IDN domains (especially due to IDN 2008) • ёлка.мойдомен.РФ • елка.мойдомен.РФ • N left hand sides in M domains can make a certificate long • UTF8String X.509 type is not widely supported?

  4. Other relates tasks • Update RFC 5280 to use IDNA2008 language?

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