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Telecommunications transmission engineering

The transmission environment, introduction to transmission, fundamentals of transmission theory, four-terminal linear networks, transmission line theory, wave analysis, modulation, information theory.....

Applied cryptography : protocols, algorithms, and source code in C : 2nd ed.

Tác giả: Bruce Schneier

It provides you with a comprehensive survey of modern cryptography. The book details how programmers and electronic communications professionals can use cryptography - the technique of enciphering and deciphering messages - to maintain the privacy of computer data. It describes dozens of ...