By Tommy M. McGuire, Mohamed G. Gouda
"Image and Video Encryption: From electronic Rights administration to Secured own communique offers a unified assessment of thoughts for encryption of pictures and video info. This levels from advertisement functions like DVD or DVB to extra study orientated issues and lately released fabric. This quantity introduces diverse options from a unified point of view, then evaluates those concepts with admire to their respective houses. it really is designed for a certified viewers composed of researchers and practitioners in undefined. The booklet can be compatible for graduate-level scholars in computing device technology and electric engineering.
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Additional resources for Image and Video Encryption From Digital Rights Management to Secured Personal Communication
We use a client-server application which transfers data to the client as soon as the connection has been set up. The client measures the time required to transmit the data after the connection is established. 4. Time demand. In Fig. b we plot the size of the data to be transmitted versus the time demand. It is clearly visible that the actual transmission rates are much lower as predicted by the specification. However, the “theoretical” ranking among the different media is maintained in the experiments.
An overview about such attacks is given in . Besides the above-mentioned methods there are attacks which are not considered pure cryptanalysis but which should be mentioned none the less. These attacks do not try to attack the cipher directly but look at side effects. These attacks look for example at the power consumption of the device while it performs a cryptographic operation: different CPU instructions need different amounts of power, from the power consumption one can make educated guesses concerning secret keys.
In the 512 pixel case that leads to 2 MB of data. Additionally the algorithm has to access other data, so the input data hardly fits into current processor caches. Options to reduce the memory requirements are the use the integer transform, or to use tiling which unfortunately decreases image quality , cache misses are another problem . In our scenario where we compress an input image of size 512 · 512 pixels (8 bit grayscale) to 80000 bits the calculations above resulted in approximately 31 744 000 operations for JPEG 2000 compression and 4 796 250 operations for AES.