揭秘：电脑文字隐藏功能到底多强大

 　　Imagine that you want to send a secret message to your colleague at the CIA. You can encrypt it to prevent counterspies from reading it. But they'll still know you were sending some sort of message. There's a better option—steganography—which means "hidden writing." You tuck your secret away in an unexpected place, like an MP3 or a photo file, to conceal¹ the fact you even shared any information at all。

　　假设你要给中情局的同事发送一封密函，为了不让间谍窃取情报，你可以给文件加密。但是那些间谍还是会知道你在传送文件。别急，隐写术可以帮上忙。隐写术也就是“文字隐藏”。你可以将秘密文字信息隐藏在MP3或者图片格式文档下，于是你就可以瞒天过海了。

　　But you can't hide much in those file types without it being suspiciously large. Executable files, aka applications, on the other hand, come in all sizes—making them an ideal place to embed² lots of data. So two computer scientists created an algorithm that packages your encrypted data into an executable file of your choice. Then it spits out a new program that works just like the original—except that your secret cargo³ is inside. The research is in the International Journal of Internet Technology and Secured Transactions. [Rajesh Kumar Tiwari and G. Sahoo, "A Novel Steganographic Methodology for High-Capacity Data Hiding in Executable Files"]

　　不过，储存太多信息在这种格式下的话，难免会因为体积过大而引人怀疑。而执行文档(又名应用程序) 的大小则没有限制，不失为藏秘密的好地方。有两位科学家编写了一个程序，利用它，你可以将秘密信息报存在任意执行文档下，而原有程序照常运行——只是还隐 藏了你的秘密。这项研究成果刊登在《网络技术与安全交易》国际期刊上。

　　Ideally, this handy trick would keep your data safe from prying⁴ eyes. Until somebody notices that you're sharing an inordinate⁵ number of executable files。

　　理想状态下，这种小把戏可以让你的信息数据不被人偷窥，当然你要是分享太多执行文档的话可就要引起别人的怀疑了。

1 conceal   

v.隐藏，隐瞒，隐蔽

参考例句：

• He had to conceal his identity to escape the police.为了躲避警方，他只好隐瞒身份。
• He could hardly conceal his joy at his departure.他几乎掩饰不住临行时的喜悦。

2 embed   

vt.把…嵌(埋、插)入，扎牢；使深留脑中

参考例句：

• The harpoon struck but did not embed.鱼叉击中了但并没有插入。
• This photo showed us how did the root of plant embed the soil deeply.这张照片显示植物的根是如何深入到土壤里去的。

3 cargo   

n.(一只船或一架飞机运载的)货物

参考例句：

• The ship has a cargo of about 200 ton.这条船大约有200吨的货物。
• A lot of people discharged the cargo from a ship.许多人从船上卸下货物。

4 prying   

adj.爱打听的v.打听，刺探（他人的私事）( pry的现在分词 )；撬开

参考例句：

• I'm sick of you prying into my personal life! 我讨厌你刺探我的私生活！
• She is always prying into other people's affairs. 她总是打听别人的私事。 来自《简明英汉词典》

5 inordinate   

adj.无节制的；过度的

参考例句：

• The idea of this gave me inordinate pleasure.我想到这一点感到非常高兴。
• James hints that his heroine's demands on life are inordinate.詹姆斯暗示他的女主人公对于人生过于苛求。