Non email addresses in UID

Steve Jones steve at
Thu Jan 23 23:50:23 CET 2014

I've been thinking about UIDs in keys, rfc4880 section 5.1 says that by convention a UID is an rfc2822 email address but this is not a requirement[1]. Gnupg does enforce that restriction unless you explicitly disable it. It would seem to make sense to include other strings that can identify a user, many people have various URLs which could be said to relate to their identity, Facebook accounts, blogs etc... It could potentially be useful to be able to associate a key with these other identities, i.e. if you get an email purporting to be from someone you only know on a webforum it would be useful to be able to verify this. I'm curious what other people on this list think of this.


Steve Jones <steve at>
Key fingerprint: 3550 BFC8 D7BA 4286 0FBC  4272 2AC8 A680 7167 C896
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