Contents
Preface vi i
Chapter 1. Introductio n 1
Chapter 2 . Caesa r Ciphe r 3
Chapter 3 . Terminolog y an d Result s fro m Numbe r Theor y 9
Chapter 4 . Modula r Arithmeti c 17
Chapter 5 . Describin g th e Caesa r Ciphe r Mathematicall y 2 7
Chapter 6 . Cryptanalysi s fo r th e Caesa r Ciphe r 3 1
Chapter 7 . Multiplicatio n Ciphe r 3 7
Chapter 8 . Cryptanalysi s fo r th e Multiplicatio n Ciphe r 4 7
Chapter 9 . Multiplication-Shif t Ciphe r 5 1
Chapter 10. Cryptanalysi s fo r th e Multiplication-Shif t Ciphe r 5 9
Chapter 11 . Non-Mathematica l Substitutio n Cipher s 6 9
Chapter 12. Preparin g t o Generaliz e 7 5
Chapter 13. Findin g Inverse s Modul o n 8 1
Chapter 14. Genera l Multiplication-Shif t Ciphe r 8 9
Chapter 15. Securit y o f th e Genera l Multiplication-Shif t Ciphe r 9 3
Chapter 16. Introductio n t o th e Exponentia l Ciphe r 103
Chapter 17. Decipherin g th e Exponentia l Ciphe r 111
Chapter 18. Cryptanalysi s fo r th e Exponentia l Ciphe r 119
Chapter 19. Mathematica l Basi s fo r th e Exponentia l Ciphe r 123
Chapter 20 . Publi c Ke y Cipher s 127
Chapter 21. RS A Ciphe r 131
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