As always the democracy citadel surprises with the miracles. I will afford reprint transfer inosmi.ru articles (Christian Science Monitor, the USA). Cool article, and before article in other article about our spies was pleasant a phrase «Character of the shown charges demands from participants of arrangement of ability secretly to travel all over the world, and they possess it», - confirm accusers.
And here article. Gallant, the Yankee!
Russian spies placed on open websites harmless at first sight photos in which the ciphered messages contained. It is the first confirmed case of application of such method in the prospecting purposes.
The prospective Russian spies arrested recently FBI, accuse that they inserted the ciphered messages into harmless pictures and photos. According to experts, it is the first confirmed case of application of such hi-tech method of concealment of the data in real life.
Accused of espionage placed usual at first sight photos on open websites, and then took from computer given these photos the coded messages, on what it is told in FBI charge. Scientists-programmers build more than ten years theories concerning existence of such method of communication, and it is the first case of publicly recognised use of such technique."In a press periodically there are statements that" al Kaide "uses such methods, but anybody never represented any proofs and did not attribute it to those or other concrete government officials, - the professor of chair of computer facilities of the Colombian university Stephen Bellovin (Steven Bellovin) speaks, - and here we have the judicial documents presented by FBI under the oath in which it is said that these people were engaged in such business. Differently, threat any more is not hypothetical".
As it becomes
Details of that accused Russian agents included in pictures and as they did it, are coded. But at the heart of the this method assumes change of a digital code which computers appropriate to colours, the senior lecturer of cryptographic laboratory of Colombian university Tel Malkin (Tal Malkin) explains.
To present the image on the computer screen, to each pixel it is appropriated three numerical values which correspond to quantity of red, green or dark blue colour in пиксельном the image. A few having changed these values, the spy can hide units and zero of computer language in пиксельных picture numbers, and the human eye of these changes does not distinguish, Bellovin speaks.
Arriving thus, prospective spies practised application of the modern form "стеганографии", or sciences about masking of messages under images. The first examples стеганографии are given by ancient Greeks who put on smoothfaced heads of slaves to the message a tattoo, disappearing then under отросшими hair. It was described by ancient writer Gerodot.
"The sense of the standard coding consists in hiding the message maintenance, - Malkin speaks, - but even if it will be found out that you send the message which nobody can read, the authorities will suspect all the same you of sending of the coded messages".
"And with shorthand you can suppress the fact of realisation of communication".
According to Malkin, computer стеганография on pictures about which speaks in the statement of FBI, originates in the nineties. But then it was only the theory.
Roots in a porno?
After September, 11th hearings that "al Kaide" hides messages in pornographic images have started to circulate, Malkin speaks. But these hearings of acknowledgement and have not received.
However at стеганографии digital images there are certain lacks. Namely, the big files to hide even small information volume are necessary to spies. It essentially limits the size of each message and increases time for its preparation, Malkin marks.
But as a whole, it is a magnificent way for creation of secret messages. First, the authorities do not know how to analyse a usual picture about presence of the confidential data. And secondly, on the Internet so it is a lot of photos that shots with the messages hidden in them are absolutely safely lost among this variety.
"The first requirement to communication of the spy consists in that nobody has noticed it. In this sense the given methods are simply magnificent, - Bellovin speaks, - I am assured, on the Internet it is a lot of billions photos, and to spend стеганографический the analysis of everyone it is simply impossible".
Now, when it is proved that created with the help стеганографии messages it not simply theory or hearing, FBI can guess only, what else messages disappear among billions images.
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