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I am looking for an open-source PGP key server for Linux. It will be run as a private server, i.e. only accessible to a limited group of users.

My google searches have turned up lots of public key servers. But the only source code I could find is OpenPGP Public Key Server which is quite old.

Any better suggestions? I'm happy to use a bigger software package (somethign like Zimbra) if it has PGP key server support.

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There is a bunch of open source OpenPGP key server implementations.

SKS and Hockeypuck use a more efficient set reconciliation protocol to synchronize with each other, PKS uses a less efficient approach. Both SKS and hockeypuck can be configured to also synchronize with PKS key servers using the old protocol.

Setting up PKS is a hassle. SKS is a little bit better, especially if readily packaged in your distribution. I recently set up a hockeypuck instance and really liked it. Clean software, well documented (although rather new) and a nice relational backend which you can easily have a look, no Berkley DB or similar hard-to-query stuff.

  • If I understand correctly, Debian team officially provides a package for SKS. This package is (obviously) also available in Ubuntu. – Franklin Yu Aug 15 at 14:23
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Another one is Mailvelope Key Server. Described as "A simple OpenPGP public key server that validates email address ownership of uploaded keys."

License: AGPL v3.0

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