AES-256 CTR mode Image Encryption/Decrypti​on

AES-256 CTR (counting) mode Image Encryption/Decryption. Uses java library for encryption and decryption.

Input a hexadecimal 256-bit AES key (AESkey), an image file name that needs to be either encoded or decoded, and the filename where you want the encoded/decoded image saved. This uses JAVA libraries to perform the image encryption/decryption but you can use my AES MATLAB code to perform the same operations natively. The randomly assigned initiation vector during encoding is converted to hexadecimal and stored as a comment when saving the .png encrypted image file. Recommend always using the .png file or another image file that does not compress and still has the ability to save a comment.

%encodes image
encodedImage3Dmatrix = AESimageEncryption(originalImageFilename,AESkey, encodedImageOutputFilename);
imshow(encodedImage3Dmatrix);
%decodes image
decodedImage3Dmatrix = decodeAESimage(encryptedImageFilename,AESkey,decodedImageOutputFilename);
imshow(decodedImage3Dmatrix);