The magnificent, unrivaled history of codes and ciphers--how they're made, how
they're broken, and the many and fascinating roles they've played since the dawn
of civilization in war, business, diplomacy, and espionage--updated with a new
chapter on computer cryptography and the Ultra secret. Man has created codes to
keep secrets and has broken codes to learn those secrets since the time of the
Pharaohs. For 4,000 years, fierce battles have been waged between codemakers and
codebreakers, and the story of these battles is civilization's secret history,
the hidden account of how wars were won and lost, diplomatic intrigues foiled,
business secrets stolen, governments ruined, computers hacked. From