Ahmed Samir Ahmed Mahmoud <br/><br/>
VHDL implementation for image encryption using spectrum fusion technique /  
 VHDL تحقيق التشفير للصور باستخدام تقنية دمج الطيف الترددى بلغة 
Ahmed Samir Ahmed Mahmoud ; Supervised Mohamed Fathy Abuelyazied , Mohamed Bakr Abdelhaliem  
 - Cairo :   Ahmed Samir Ahmed Mahmoud ,   2013 
 - 145 P. :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electronics and Communication 
<br/><br/> In this thesis we just implemented a new method for encrypting images using a discrete cosine transform namely . Spectrum fusion technique this technique encrypting the layers of color images by change its spectrum distributions by multiply these layers with a corresponding key (phase mask) layers 
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<br/><br/><label>Subjects--Index Terms: </label>Computer security  Cryptography  Image encryption / Decryption