Beschreibung:
In May 1917, William and Elizebeth Friedman were asked by the U.S. Army to begin training officers in cryptanalysis and to decrypt intercepted German diplomatic and military communications. In June 1917, Herbert Yardley convinced the new head of the Army's Military Intelligence Division to create a code and cipher section for the Army with himself as its head.
1. Introduction.- 2. Beginnings - Herbert Yardley.- 3. Beginnings - William Friedman and Elizebeth Smith.- 4. The Great War - Meetings.- 5. Wars End.- 6. What Might Have Been.- 7. The Cipher Bureau: Early Days.- 8. The Lone Cryptologists: Escape from Riverbank.- 9. The Cipher Bureau: Success and Decline.- 10. The Lone Cryptologists: Washington Life.- 11. Cryptologic Endings and Beginnings.- 12. The American Black Chamber.- 13. A Pretty Young Woman in a Pink Dress.- 14. One Career After Another.- 15. Red and Purple.- 16. Yardley Abroad.- 17. The Friedmans at War - William.- 18. The Friedmans at War - Elizebeth.- 19. Yardley's War.- 20. Endings.- 21. Memories of Friedman and Yardley.- Appendix - A Few Words of Cryptology.- Bibliography.- Photo and Illustration Credits.