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- åAcknowledgements
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- By Phil Zimmermann
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- I'd like to thank the following people for their contributions to the creation
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- of Pretty Good Privacy. Although I was the author of PGP version 1.0,
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- major parts of later versions of PGP were implemented by an
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- international collaborative effort involving a large number of
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- contributors, under my design guidance.
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- Branko Lankester, Hal Finney and Peter Gutmann all contributed a huge
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- amount of time in adding features for PGP 2.0, and ported it to Unix
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- variants. Hal and Branko made Herculean efforts in implementing my new
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- key management protocols. Branko has spent more time on it than any
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- other contributor to PGP.
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- Hugh Kennedy ported it to VAX/VMS, Lutz Frank ported it to the Atari ST,
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- and Cor Bosman and Colin Plumb ported it to the Commodore Amiga.
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- Translation of PGP into foreign languages was done by Jean-loup Gailly in
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- France, Armando Ramos in Spain, Felipe Rodriquez Svensson and Branko
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- Lankester in The Netherlands, Miguel Angel Gallardo in Spain, Hugh
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- Kennedy and Lutz Frank in Germany, David Vincenzetti in Italy, Harry
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- Bush and Maris Gabalins in Latvia, Zygimantas Cepaitis in Lithuania, Peter
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- Suchkow and Andrew Chernov in Russia, and Alexander Smishlajev in
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- Esperantujo. Peter Gutmann offered to translate it into New Zealand
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- English, but we finally decided PGP could get by with US English.
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- Jean-loup Gailly, Mark Adler, and Richard B. Wales published the ZIP
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- compression code, and granted permission for inclusion into PGP. The
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- MD5 routines were developed and placed in the public domain by Ron
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- Rivest. The IDEA(tm) cipher was developed by Xuejia Lai and James L.
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- Massey at ETH in Zurich, and is used in PGP with permission from
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- Ascom-Tech AG.
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- Charlie Merritt originally taught me how to do decent multiprecision
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- arithmetic for public key cryptography, and Jimmy Upton contributed a
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- faster multiply/modulo algorithm. Thad Smith implemented an even
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- faster modmult algorithm. Zhahai Stewart contributed a lot of useful
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- ideas on PGP file formats and other stuff, including having more than one
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- user ID for a key. I heard the idea of introducers from Whit Diffie. Kelly
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- Goen did most of the work for the initial electronic publication of PGP 1.0.
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- Various contributions of coding effort also came from Colin Plumb, Derek
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- Atkins, and Castor Fu. Other contributions of effort, coding or otherwise,
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- have come from Hugh Miller, Eric Hughes, Tim May, Stephan Neuhaus, and
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- too many others for me to remember right now. Two Macintosh porting
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- projects have been underway, headed by Zbigniew Fiedorwicz and Blair
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- Weiss.
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- Since the release of PGP 2.0, many other programmers have sent in
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- patches and bug fixes and porting adjustments for other computers. There
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- are too many to individually thank here.
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- The development of PGP has turned into a remarkable social phenomenon,
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- whose unique political appeal has inspired the collective efforts of an
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- ever-growing number of volunteer programmers. Remember that
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- children's story called ΓÇ£Stone SoupΓÇ¥? It is getting harder to peer
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- through the thick soup to see the stone at the bottom of the pot that I
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- dropped in to start it all off.
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