Cover
Title Page
Introduction
1 The Cipher of Mary Queen of Scots
2 The Anonymous Codebreaker
3 The Mechanization of Secrecy
4 The Language Barrier
5 Alice and Bob Go Public
6 Pretty Good Privacy
The Codebreaker’S Challenge
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Acknowledgements
Further Reading
Index
About The Author
Also By Simon Singh
Copyright
About the Publisher
