Monday, November 11, 2013

Digital Image Stenography



          Digital image steganography is the ability to encrypt a file with information. It allows people to hide a digital image by encrypting it into the content of the message. This is a way people can send secrete messages. Some examples of people who would do this are people who are paranoid and people who think their information is so secretive that it needs to be encrypted within another file. To me it is crazy and anything that is that secretive should be spoken about only in person, id say it is crazy. The main ways that people do steganography is through image,audio and video files. The goal is to hide the info within these multi media files. For the people sending messages secretly know that some files can only send up to 1,000 words which is nothing so it is important that they use carriers and other programs that enable encryption to be higher than 1,000 words.
          Steganography dates from way back in the day. The use of tattooed messages on slaves’ shaved scalps is an example of old time stenography. Messages were hidden when their hair regrew, as well as messaged carved in wood and covered with wax. When it was first used in English in the sixteenth century, referred to cryptography writing in codes and ciphers. This history is important to remember when you think of the digital version of it. 
Souce 

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