404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
当前位置:科技 > 科学博览 > 生活科技 > 正文

上世纪十种设计巧妙间谍工具:树桩窃听器(6)

2010-07-13 08:35:51 中华网论坛

    6.密码盘

上世纪十种设计巧妙间谍工具:树桩窃听器

密码盘

    人们不由自主地都会想,间谍工具并不全都是那么的古老,但实际上,早在古罗马时代,凯撒就曾利用密码术对信息进行编译。这个密码盘的年代可以追溯至美国内战,由美国南方邦联一方采用——上面CSA三个字母代表美利坚邦联(Confederate States of America)的意思。这套装置的工作原理显而易见:转动里面一圈的轮子替换字母,比如M=G,P=J。密码很容易破译吗?如果情报不是以你熟悉的语言编写,那就不容易破译。问题是间谍都诡计多端,哪会用你熟悉的语言编码?

共有评论()
所有评论仅代表网友意见。提交评论
更多"情报" 的相关消息

推荐阅读

404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
情报
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
  • 404 Not Found

    404 Not Found


    nginx
  • 404 Not Found

    404 Not Found


    nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx

论坛精华

IT新闻

IT人物

企业

产品报价手机-DC-笔记本-台式机-液晶-等离子

404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx
404 Not Found

404 Not Found


nginx