Philip Zimmermann

Essays on PGP

Here are links to some stuff I've written on PGP:

Author's preface to the book: "PGP Source Code and Internals"
Published by The MIT Press, 1995. ISBN 0-262-24039-4.
(no longer in print)

Beware of Snake Oil
Part of the old original PGP User's Guide (updated in 1997)

Why I Wrote PGP
Part of the old original PGP User's Guide (updated in 1999)

Senate Testimony
Testimony to a US Senate subcommittee in June 1997

No Regrets About Developing PGP
Response to a post-9/11 Washington Post article about me

5 June 2001 PGP Marks 10th Anniversary

6 June 2021 PGP Marks 30th Anniversary

John Perry Barlow's Foreword to the book: "The Official PGP User's Guide"
Published by The MIT Press, 1995. ISBN 0-262-74017-6.
(no longer in print)