1 von 1 Kunden fanden die folgende Rezension hilfreich:
2.0 von 5 Sternen
For beginners only!, 10. September 1996
Von Ein Kunde
Rezension bezieht sich auf: PGP: Pretty Good Privacy: Pretty Good Privacy (Taschenbuch)
Mr. Garfinkel does a good job of introducing the beginning computer user to the complex subject of cryptography as it relates to PGP and it does a good job of explaining the basics behind public key cryptography. If you are someone who downloaded PGP because you heard it was controversial and wanted to see what it was all about but don't have a clue how to use it--even after reading the documentation that comes with the program--this book is for you.
However, if you know anything about cryptography and PGP don't waste your money, you will get more detail from the PGP documentation in the zipped file. This book does not give details on how to set up a secure cryptosystem and indeed if you intend to keep secrets from anyone but your little sister you need more information than Mr. Garfinkel provides.
I got the idea from reading the book that Mr. Garfinkel was regurgitating information that could be found elsewhere--the PGP documentation--and putting into easy-to-understand language while glossing over the foundations and purposes of the basic commands. Also, it seemed that the book "came short" and had to be beefed up with the history of PGP and the RSA algorithm as the first 145 pages of this book are devoted to this and the actual instructions on how to use PGP consist of pages 145-276. (Do the math, I think he was adding to a weak writing. Even the documentation that came with PGP was longer than this.)
The author's idea for escrowing encryption keys was ridiculous at best and completely insecure. He recommended writing them down and putting them in an envelope. One should not bother using encryption if this is the way that he protects himself from a forgotten encryption key.
As far as I am concerned you would do better to read anything else. Don't buy this book! Everything that you need to use PGP is in the zip file that you downloaded. If you need handholding badly enough to need this book then using a powerful program like PGP could cause you more problems that it would solve
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3.0 von 5 Sternen
Does not cover recent versions, 24. September 1999
Von Ein Kunde
Rezension bezieht sich auf: PGP: Pretty Good Privacy: Pretty Good Privacy (Taschenbuch)
Overall a good history of PGP. Does not cover the recent developements since PGP was aquired by Network Associates. The current version 6.51 offers a certificate server, PKI server, VPN and encrypted disk utility. Needs to be updated.
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2 von 3 Kunden fanden die folgende Rezension hilfreich:
2.0 von 5 Sternen
Not up to O'Reilly's Standards, 3. Mai 2000
Von Ein Kunde
Rezension bezieht sich auf: PGP: Pretty Good Privacy: Pretty Good Privacy (Taschenbuch)
My usual rule is to buy anything published by O'Reilly--it's always worth it. Not this time.
Garfinkel's book is extremely basic. It covers the same ground as the PGP documentation, but not as well. Worse, it's badly out of date by now.
A much better bet is to read the online documentation for GnuPG, the free PGP clone, at www.gnupg.org. If you use UNIX, you should use GPG instead of PGP anyway: PGP has a wonderful interface under Windows, but has really stagnated for UNIX users.
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