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密码机在世界上的使用率越来越高。随着该技术在美国及海外应用的不断增加,将会使监听对手的通信越来越困难。由信托信息系统公司和软件出版商协会提供的一份有关世界范围内密码机产品的调查报告表明,海外现有的密码机种类已达400多种。其中许多产品引入了数字
The usage of ciphers in the world is getting higher and higher. With the increasing use of this technology in the United States and overseas, it will become more and more difficult for the interception of the opponent’s communications. A survey report on worldwide cipher products provided by FISCO and the Association of Software Publishers showed that there are more than 400 types of ciphers available overseas. Many of these products introduced numbers