I've released the first version of openpgpkey-milter, a sendmail/postfix
milter service that attempts to automatically encrypt emails using gnupg
based on the precense of a DNSSEC signed OPENPGPKEY record as specified
in http://tools.ietf.org/html/draft-wouters-dane-openpgp
It currently uses the private-use RRTYPE 65280.
Version 2.3 of hash-slinger has a new openpgpkey command that you can
use to generate OPENPGPKEY records. It supports generating the generic
type syntax. (http://people.redhat.com/pwouters/hash-slinger/)
My paul(_at_)nohats(_dot_)ca email address is pusblishing this record. Feel
free to
send me test emails, although if you don't hear back from me, perhaps
follow up at paul(_at_)cypherpunks(_dot_)ca :)
This initial version does not yet handle multipart / MIME emails, and
the python-gnupg module has some known bugs with utf-8 / IDN. Punycode
support is also not included in this release. It was also not stress
tested on a busy mail server.
You can grab the tar ball at ftp://ftp.nohats.ca/openpgpkey-milter/ or
have a look at https://github.com/letoams/openpgpkey-milter/
Enjoy!
Paul
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