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第23章 间谍信息?

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摩尔斯电码拥有特定的翻译机制,刘放对这个非常熟悉,他一边回忆着从书本中看到的内容,一边进行翻译,不到十分钟,刚才被记录下来的内容就变成了英文字母和标点符号,只有一段是纯数字。

通常来说,摩尔斯电码翻译出来后就能进行阅读和辨认,也就是说电码被翻译出来后就是完整的单词和句子,可刘放翻译出来的却只是杂乱的字母和标点符号,这让他感到非常奇怪。

“难道这是间谍改进后的信息加密方式?”

地球另一端的美国西雅图,美国计算机信息安全中心的工作人员正在紧张的忙碌着,一个戴着眼镜的中年男子在大厅里来回踱步,他一边观察着大型显示屏上的内容,一边皱着眉头思考问题。

过了没多久,就有人跑过来向他汇报情况:“米歇尔先生,我们已经向卫星发送了按照摩尔斯电码编译的高频信号,RB那边的接收站已经收到了信号,目前正在进行解码工作。”

米歇尔是这里的主管,听到汇报他点点头:“问问他们还需要多久才能把信号转变成计算机可以识别的代码。”

“好的,我这就去询问。”

手下离去后,米歇尔皱着眉头自言自语道:“这种方式真的可靠吗?”

美国计算机信息安全中心正在进行一项技术论证,论证的主题是计算机无线信号的传输是否可以在保持通信距离的同时,还保持安全性。

计算机的无线传输技术已经在美国少数部门进行投放,其中最主要的部门是军方,为了确保安全性,军方要求国家计算机信息安全中心想办法给无线信息进行加密,米歇尔为此忙活了好几个月的时间,他们不断地尝试着各种可行性,以求找到最安全可靠的无线传输方式。

目前正在进行试验的就是通过摩尔斯电码对计算机无线信号进行加密,主要的工作原理是:首先在信息的压缩过程中,打乱其编码顺序,然后在信息中加入安全包,安全包记载了还原编码的正确顺序,远程无线端在接收到信号后,会使用特殊的解码器,对加密信息进行还原处理,这样一来,接收到的信号就能被计算机识别出来了。

一般情况下,无线信号的传输需要经过以下几个步骤:通过特定设备对信号进行高频叠加——通过功率增容设备(比如天线)发送信号——电波在空气中传播——被接收端的天线接收——到达信息还原设备(比如说收音机或者电视机)——对电信号进行放大——去除叠加的高频信号——解码器把信号还原成设备可以读懂的语言,这就是无线电信息传输的全过程。

看起来好像很复杂,其实说起来并不很难理解,这就好比把一个相对脆弱的东西运送到另一个地方,你需要为它提供一个安全可靠的运载工具,由于地球空间内存在着大量的杂波,所以信号本身是不适合直接进行传输的,只有增加其强度,把它变成不易被杂波干扰的高频信号,然后在到达目的地后去除掉运载工具(也就是高频信号),才能确保信息传输的质量。

这只是信息的传输,如果涉及到安全的话,需要考虑的问题就更多了,特别是军方的信息,一般都是对外保密的,如果使用普通的传输方式,敌对国家就能轻而易举的对其进行破解。

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