David Kahn鈥檚 The Codebreakers is the book on codes. Second World War
stories, talking to aliens, and the Rosetta Stone make a stunning thousand-plus
pages of irresistible reading for general readers, specialists and historians.
Now revised, with its new chapter on public key cryptography, it鈥檚 even deeply
relevant for Internet users. Published by Simon & Schuster, 拢45, ISBN
0684831309.
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