1 Introduction. - 2 Results. - 3 Introduction to Differential Cryptanalysis. - 3. 1 Notations and Definitions. - 3. 2 Overview. - 3. 3 Characteristics. - 3. 4 The Signal to Noise Ratio. - 3. 5 Known Plaintext Attacks. - 3. 6 Structures. - 4 Differential Cryptanalysis of DES Variants. - 4. 1 DES Reduced to Four Rounds. - 4. 2 DES Reduced to Six Rounds. - 4. 3 DES Reduced to Eight Rounds. - 4. 4 DES with an Arbitrary Number of Rounds. - 4. 5 Modified Variants of DES. - 4. 6 DES with Independent Keys. - 4. 7 The Generalized DES Scheme (GDES). - 5 Differential Cryptanalysis of the Full 16-Round DES. - 5. 1 Variants of the Attack. - 6 Differential Cryptanalysis of FEAL. - 6. 1 Cryptanalysis of FEAL-8. - 6. 2 Cryptanalysis of FEAL-N and FEAL-NX with N ? 31 Rounds. - 6. 3 Other Properties of FEAL. - 7 Differential Cryptanalysis of Other Cryptosystems. - 7. 1 Cryptanalysis of Khafre. - 7. 2 Cryptanalysis of REDOC-II. - 7. 3 Cryptanalysis of LOKI. - 7. 4 Cryptanalysis of Lucifer. - 8 Differential Cryptanalysis of Hash Functions. - 8. 1 Cryptanalysis of Snefru. - 8. 2 Cryptanalysis of N-Hash. - 9 Non-Differential Cryptanalysis of DES with a Small Number of Rounds. - 9. 1 Ciphertext Only Attacks. - 9. 2 Known Plaintext Attacks. - 9. 3 Statistical Known Plaintext Attacks. - A Description of DES. - A. 1 The Key Scheduling Algorithm. - A. 2 DES Modes of Operation. - B The Difference Distribution Tables of DES. Language: English