01149nam0 2200277 i 450 SUN005528620160322100910.346978-05-210-0890-70.0020061106d2002 |0engc50 baengGB|||| |||||Codes and ciphersJulius Caesar, the Enigma and the internetR. F. ChurchhouseCambridgeCambridge university2002X, 240 p.ill.24 cm.94A60Cryptography [MSC 2020]MFSUNC01969994-XXInformation and communication theory, circuits [MSC 2020]MFSUNC01970101A60History of mathematics in the 20th century [MSC 2020]MFSUNC021492CambridgeSUNL000024Churchhouse, Robert F.SUNV04380313651Cambridge universitySUNV000097650ITSOL20201012RICASUN0055286UFFICIO DI BIBLIOTECA DEL DIPARTIMENTO DI MATEMATICA E FISICA08PREST 94-XX 0791 08 6386 I 20061106 Codes and ciphers1424825UNICAMPANIA