C++程序設(shè)計語言（特別版）This book presents every major C++ language feature and the standard library. It is organized around language and library facilities.
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DES( Data Encryption Standard)算法，于1977年得到美國政府的正式許可，是一種用56位密鑰來加密64位數(shù)據(jù)的方法。雖然56位密鑰的DES算法已經(jīng)風光不在,而且常有用Des加密的明文被破譯的報道,但是了解一下昔日美國的標準加密算法總是有益的,而且目前DES算法得到了廣泛的應(yīng)用
