PGP: Pretty Good Privacy

By Simson Garfinkel
Price: $34.95 USD
£24.95 GBP

Cover | Table of Contents | Colophon

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Colophon

Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The image on the cover of PGP: Pretty Good Privacy is of a padlock. Although the remains of simple key locks have been found dating back to ancient Assyria, the basic form of the modern padlock was invented by Linus Yale in about 1860. In the Yale lock, or pin-tumbler cylinder lock, a cylindrical core, rotated by a key, moves the bolt of the lock, releasing it. The ridges on the key raise pins of different sizes in the cylindrical core. If these pins are not raised to the proper height, the core will not move. The keys in PGP serve a similar purpose to a padlock key. Once you have used a PGP key to "lock" a file or an electronic mail message, you, or the recipient of your message, must use a corresponding key to "unlock" it. Edie Freedman designed the cover of this book. The padlock image is adapted from Scan This Book, a copyright-free collection of old engravings compiled by John Menden hall and published by Art Direction Book Company. The cover layout was produced with Adobe Photoshop 2.5 and QuarkXPress 3.3 for the Macintosh, using the Adobe ITC Gara mond fonts. Whenever possible, our books use RepKoverTM, a durable and flexible lay- flat binding. If the page count exceeds RepKover's limit, perfect binding is used. The interior format was designed by Edie Freedman and Jennifer Niederst, using Adobe ITC Garamond fonts and implemented in FrameMaker by Mike Sierra. The figures were created in Aldus Freehand 4.0 by Chris Reilley and Hanna Dyer. This colophon was written by Clairemarie Fisher O'Leary.

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