Singh, Simon.
The code book : the secret history of codes and code-breaking / Simon Singh. - London : Fourth Estate, 2000. - xiii, 402 p. : ill. ; 20 cm.
Originally published: 1999.
Includes bibliographical references and index.
1857028899 9781857028898
bA0X5928
Cryptography--History.
Ciphers.
Data encryption (Computer science)
Confidential communications.
Cryptography.
Z103 / SIN
652.8 SIN
The code book : the secret history of codes and code-breaking / Simon Singh. - London : Fourth Estate, 2000. - xiii, 402 p. : ill. ; 20 cm.
Originally published: 1999.
Includes bibliographical references and index.
1857028899 9781857028898
bA0X5928
Cryptography--History.
Ciphers.
Data encryption (Computer science)
Confidential communications.
Cryptography.
Z103 / SIN
652.8 SIN