Boston Linux & UNIX was originally founded in 1994 as part of The Boston Computer Society. We meet on the third Wednesday of each month, online, via Jitsi Meet.

Our Next PGP/GnuPG Keysigning Party

There are currently no upcoming PGP/GnuPG keysigning parties scheduled.


Script to sign keys

In order to minimize the chore of signing many keys, you can use a tool to simply the process as much as possible. The recommended tool for signing keys post-keysigning party is "caff", which can be installed on debian, Ubuntu, Fedora, CentOS, or Red Hat systems via one of

For Red hat and CentOS systems, the pgp-tools package is in the optional EPEL repo.


Previous Keysigning Parties

  1. September 18, 2019 :: Crypto News and Our Annual PGP/GnuPG Key-Signing Party. Transitioning from PGP/GnuPG
  2. September 19, 2018 :: Crypto News, plus our annual PGP/GnuPG Key-Signing Party. VENONA, breaking Soviet OTP. Quantum Outlook.
  3. September 20, 2017 :: Crypto News Review, Historical Vignette, and GPG/PGP Key-Signing - WW2 binary tape machines (Vernam mixer, STURGEON, TUNNY) and Bletchley Park
  4. September 21, 2016 :: Transposition Cyphers in Historic Context, and PGP/GnuPG Keysigning Party XVI
  5. September 16, 2015 :: Jeff Schiller and PGP/GnuPG Keysigning Party XV
  6. September 17, 2014 :: Crypto News, TOR, and our PGP/GnuPG Keysigning Party XIV - Guest speaker Shava Nerad on TOR history. Keysizes. Operational PGP (Grugqs)
  7. September 18, 2013 :: PGP/GnuPG Keysigning Party XIV - (PGP praxis)
  8. September 19, 2012 :: PGP/GnuPG Keysigning Party XIII - "Death of Clever" (password strength)
  9. September 21, 2011 :: PGP/GnuPG Keysigning Party XII - Solving newly found Vigenère message from Vicksburg battle.
  10. September 15, 2010 :: PGP/GnuPG Keysigning Party XI, plus a talk by V. Alex Brennan
  11. September 16, 2009 :: PGP/GnuPG Keysigning Party X - Enigma videos
  12. September 17, 2008 :: PGP/GnuPG Keysigning Party IX
  13. September 19, 2007 :: PGP/GnuPG Keysigning Party VIII - Chalktalk from Caesar to NSA and RSA
  14. September 20, 2006 :: PGP/GnuPG Keysigning Party VII
  15. August 17, 2005 :: PGP/GnuPG Keysigning Party VI
  16. September 15, 2004 :: PGP/GnuPG Keysigning Party V
  17. September 17, 2003 :: PGP/GnuPG Keysigning Party IV
  18. January 15, 2003 :: PGP/GnuPG Keysigning Party III
  19. December 19, 2001 :: PGP/GnuPG Keysigning Party II
  20. September 18, 1996 :: PGP and Electronic Privacy

BLU is a member of BostonUserGroups
BLU is a member of BostonUserGroups
We also thank MIT for the use of their facilities.

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