本站整理2012年6月英语四级阅读:电脑文字隐藏功能供大家参考,预祝大家顺利通过四六级英语考试。
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 theyll still know you were sending some sort of message. Theres a better optionsteganographywhich means hidden writing. You tuck your secret away in an unexpected place, like an MP3 or a photo file, to conceal 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 cant hide much in those file types without it being suspiciously large. Executable files, aka applications, on the other hand, come in all sizesmaking them an ideal place to embed 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 originalexcept that your secret cargo 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]
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