Measuring encryption quality for bitmap images encrypted with rijndael and KAMKAR block ciphers

mina avman@,yioo.com Abstract: In his piper, the petfarmme of applicalion of fijndxl Cipher (Am) and KAWR Cipher to Bitv images is shrdied comparing the qualiw of encryption of the two ciphers when inlroducing inmge encryption 7be method 01 opplicaiion of the ciphers io EMF images ir explained A mw meme for encryp~iion quality is introduced insteud of judging the encryption quality by mere visual inrpecrion To test this encvption pdity -mmiue, we encrypt the imuges using huo dt@erent ~pproorhes. the Elec@onic Codpbook (ECB) mode grid the Ciph;;j-Bi+k Chaining (CBC) mode. We pr? that +be .numerical re*& given ly &U pnqx~~d m+waring technique agree wilh !hare taken by visual impection MdpreviouE results known wore about the &ormame o/ ECB and CBC mds in image enctyption