全球每天都在发生加密信息被盗事件。今天,除军事和外交上的需要外,随着信息时代的来临,商业贸易、网络通信等都需要防范非法的“第三者”。从20世纪初发展成为数学的一个分支以来,密码学作为一门严格的科学,促进了计算机的发展;同时,计算机产业的飞速发展使破译工具越来越先进,对加密方法要求越来越高。 Encrypted information theft occurred every day around the world. Today, with the advent of military and diplomatic needs, with the advent of the information age, commercial trade and network communications all need to prevent the illegal “third party.” Since the early 20th century became a branch of mathematics, cryptography as a strict science has promoted the development of computers. Meanwhile, the rapid development of the computer industry has made the deciphering tools more and more advanced and the requirements for encryption methods are getting higher and higher .