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paperback. Condición: New. Language:Chinese.Pages Number: 355 Publisher: Tsinghua University Press Pub. Date :2003-7-1. This book focuses on: the theoretical basis of cryptography (the basis of information theory. complexity theory); key encryption algorithm and its theoretical basis (password University of technology); cryptographic protocols and security protocols (practical application of cryptography); common security technology and network security technologies (practical skills). Contents: 1. 2 an overview of inf.