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| Foreword | |
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| Preface | |
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| PGP Overview | |
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| Introduction to PGP | |
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| Why PGP? The Case for Encryption | |
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| Your Mail Can Go Astray | |
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| Protecting Your Privacy | |
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| Where Did PGP Come from? | |
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| Basic PGP Terminology | |
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| Keys: Public, Secret, and Session | |
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| Key Certificates | |
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| Key Rings | |
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| Pass Phrases | |
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| Digital Signatures | |
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| Signatures on Key Certificates | |
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| How to Run PGP | |
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| The Command Line Interface | |
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| Getting Help (-h Option) | |
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| Specifying Command Line Arguments | |
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| Using ASCII Armor (-a Option) | |
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| Encrypting and Signing Email (-e and -s Options) | |
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| PGP File Extensions | |
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| PGP Environment Variables | |
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| PGP Configuration Variables | |
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| The PGP Language File | |
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| PGP and Its Competitors | |
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| Key Certification with PGP | |
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| Cryptography Basics | |
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| How Does Simple Cryptography Work? | |
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| Codes | |
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| Ciphers | |
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| Substitution ciphers | |
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| One-Time Pads | |
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| Keys and Key Length | |
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| Breaking the Code | |
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| Brute force (key search) attack | |
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| Cryptanalysis | |
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| Private Key Cryptography | |
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| Private Key Algorithms | |
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| A Private Key Example | |
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| Problems with Private Key Cryptography | |
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| The Key Distribution Center | |
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| The Outlook for Private Key | |
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| Public Key Cryptography | |
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| Public Key Systems | |
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| Advantages of Public Key Systems | |
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| Digital Signatures | |
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| Using Private and Public Key Cryptography Together | |
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| How Good is Cryptography? .. | |
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| The Strong and the Weak | |
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| The Case for Weakness | |
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| What Encryption Can't Do | |
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| U.S. Restrictions on Cryptography | |
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| Cryptography and the U.S. Patent System | |
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| Cryptography and Export Controls | |
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| Cryptography History and Policy | |
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| Cryptography Before PGP | |
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| Cryptography Through the Ages | |
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| National Security and the NSA | |
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| Lucifer and the DES | |
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| The National Bureau of Standards | |
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| The Security of the DES | |
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| DES Cracking | |
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| Alternatives to the DES | |
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| Public Key Cryptography | |
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| Ralph Merkle''s Puzzles | |
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| Diffie-Hellman Multi-User Techniques | |
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| Diffie-Hellman Exponential Key Exchange | |
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| The Birth of RSA | |
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| How does RSA work? | |
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| Technical Memorandum #82 | |
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| The Rise and Fall of Knapsacks | |
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| Taking Public Key to Market | |
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| A Pretty Good History of PGP | |
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| Phil Zimmermann: On the Road to PGP | |
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| Metamorphic Systems | |
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| Charlie Merritt | |
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| Phil Zimmermann Meets Public Key | |
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| Face to Face with Jim Bidzos | |
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| The Rise of RSA Data Security | |
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| Working with Big Jim | |
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| A Pretty Good Program | |
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| The Anti-Crime Bill S.266 .. | |
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| The Birth of PGP-Version 1.0 | |
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| PGP Grows Up | |
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| Bass-O-Matic | |
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| The Real Thing-PGP Version 2.0 | |
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| The Cypherpunks | |
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| PEM, RSAREF, and RIPEM | |
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| ViaCrypt | |
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| MIT Steps in | |
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| Throwing PGP into the Wind | |
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| The Federal Investigation of Zimmermann | |
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| Whither PGP? | |
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| RSA-129 Solved! | |
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| Privacy and Public Policy | |
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| Wiretapping and the U.S. Government | |
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| The FBI''s Digital Telephony Plan | |
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| The Untold Cost of Digital Telephony | |
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| Return of Digital Telephony | |
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| Where''s the Beef? | |
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| An Information Superhighway that''s "Wired for Sound" | |
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| The NSA''s Clipper Chip | |
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| Inside Clipper | |
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| Who Gets the Keys? | |
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| The Battle over Clipper and the EES | |
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| Problems with Clipper | |
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| Cryptography Patents and Export | |
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| Patents and Policy | |
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| Export: 40 Bits is not Enough! | |
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| The Digital Signature Standard | |
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| The Battle over the DSS | |
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| The DSS and Patents | |
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| The Fall of PKP? | |
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| The Cylink Lawsuit | |
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| The Schlafly Lawsuit | |
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| Using PGP | |
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| Protecting Your Files | |