Digital Image Steganography

Steganography is what is used to communicate secret or private data though a media carrier. One can securely transfer a message of text by having it “hide”.  Not only can this hidden data be hidden in still images but it can also be in video or audio files as well. Encryption is used to protect the embedded file in case it was in fact discovered. It would be hard if not impossible to break through this encryption. However, in a couple of years this may change.

Compression is used to make more space available inside images. A key needs to be used when sending encrypted messages. Th

is decides where in the image the information should go hide. A key can be another image or text. The formats used to send these messages are GIF and JPEG. GIF is the tested steganography format.

Information from: http://ulster.academia.edu/AbbasCheddad/Papers/224250/Digital_Image_Steganography_Survey_and_Analysis_of_Current_Methods and https://ccrma.stanford.edu/~eberdahl/Projects/Paranoia/index.html

Pictures from: http://jp.fujitsu.com/imgv3/jp/group/labs/en/business/activities/activities-3/stegano02.jpg and https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRv6OpID-vHguXTyZIx78zBkbWHhKHCkVNwxQ7Nhs5tf8NwqXw3jm5hsR6F_QxE80h1E8WXlfw1zTgxCYRJHmVYmgSDMgSZlT3ukx1wkBsAAACyVQuf2OXBwvj-6EeFQtnodU6E6xroALG/s1600/monalisa.jpg