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SSS 2011-05-12

时间:2011-06-04 08:56来源:互联网 提供网友:wanglihong80   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American’s 60-Second Science. I’m Christopher Intagliata. Got a minute?

"There’s one message waiting for you."

Imagine that you wanna 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.

"Transfer of data is complete."

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.

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.

"Transfer complete."

Thanks for the minute. For Scientific American’s 60-Second Science, I’m Christopher Intagliata.


点击收听单词发音收听单词发音  

1 conceal DpYzt     
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 SqjxX     
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 6TcyG     
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 a63afacc70963cb0fda72f623793f578     
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 c6txn     
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。
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