Singh, Simon

The code book : the science of secrecy from Ancient Egypt to quantum cryptography / Simon Singh. - London : Fourth Estate, 1999. - xiii, 352 p. : ill., facsims., 1 ma p., ports. ; 24 cm.

1857028791

b99X7755


Cryptography.
Cryptography--History.
Ciphers--History.
Data encryption (Computer science)--History.
Confidential communications--History.