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- REVIEW: PGP - PRETTY GOOD PRIVACY by Simson Garfinkel O'REILLY & ASSOC. 1995
- ISBN: 1-56592-098-8 393 pages, paperbound $24.95
-
- Finally, an authoritative book about a very popular and somewhat controversial
- subject has been released. It's not only about Phil Zimmermann's encryption
- program, PRETTY GOOD PRIVACY, (PGP for short) although it covers the latest
- version (2.6.2) in great detail. Rather it is also a discussion of the concept
- of the people's right to privacy in a free society and governmental attempts
- to abridge these rights. PGP is freely available encryption/decryption
- software that provides individuals with an extremely powerful cryptography
- package that has, in the past, been available only to the military,
- intelligence agencies and very large corporations.
-
-
- PGP is used to encrypt and decrypt files and e-mail. You can also "sign"
- documents with a tamper-proof digital signature to assure authenticity and
- origin. PGP is based upon the RSA algorithm, developed at MIT by
- mathematicians Rivest, Adleman and Shamir and the Diffie-Hellman concept of
- multi-user techniques commonly known as "Public Key" cryptography.
- From the beginning there were conflicts over patent infringements and U.S.
- State Department export restrictions that consider cryptographic materials to
- be munitions! Phil Zimmermann has taken on the establishment and his many
- legal battles continue even now. A special defense fund has been set up for
- supporters to help him with his legal expenses as he continues to stand up
- to the government on this all-important issue and challange to our right
- to privacy.
-
- Simson Garfinkel has done an extremely thorough job of showing us all the
- technical ins-and-outs of PRETTY GOOD PRIVACY and how to install it and use
- it on a PC, Macintosh or UNIX platform. He even tells us where to get the
- latest version (for free!) by FTP from the server at M.I.T. provided you
- have full Internet access! Moreover, he has gone much deeper into the
- PGP/privacy saga by detailing the "behind-the-scenes" stories of how Phil
- Zimmermann developed PGP, chronicling the patent infringement and export
- restriction conflicts and taking a human-interest look at the people
- involved in these all important legal precedent-setting actions that are
- still not resolved in the courts and probably won't be for a long time to
- come.
-
- I have been following the PGP story since Version 1.0 was released in late
- 1991. Many others share my interest - in fact there are several USENET
- newsgroups (including alt.security.pgp) and a mailing list totally devoted
- to discussion of PGP matters and right-to-privacy issues. When O'Reilly
- informed me a PGP book was forthcoming I was most anxious to review
- it. The fine folks at O'Reilly have done a truly superb job with the
- graphics and illustrations.
-
- This book is not only for those wanting to learn how to master PGP (although
- it certainly will show you how), but for anyone interested in cryptography
- and concerned with our fundamental right to privacy. Simson Garfinkel's
- book didn't disappoint me - it accurately tells the whole PGP story and
- Garfinkel promises that future editions will continue to do so. In my
- opinion this is the most fascinating computer story I've read since Cliff
- Stoll's classic yarn several years ago. It won't disappoint you either.
-
- (C) 1995
- H. Michael Crestohl
- Nahant Massachusetts
- E-mail: mc@shore.net