Pixel based image encryption using magic square

Abstract

In recent world, the way of transferring the secured information particularly in public sectors, has faced more challenges. To minimize these challenges, cryptographic concepts has been introduced. Cryptography is the art of technique that is used to changing the information in to unreadable format based on the user's key. Various cryptographic concepts have been introduced for text and image. Due to data redundancy and mass data capacity the text encryption methods are difficult to handle the image encryption. Image encryption is done by changing the position of the pixels in an image based on the key provided by the user. In the existing method, the image encryption is done by the magic rectangle method. It contains only one magic rectangle and if it is computed, the intruder can easily retrieve the original image. To overcome this, we proposed the Pan Magic Square encryption algorithm for the image to be encrypted. In PMS, the plain text image is partitioned into pixels. By user's key, 64 magic squares are generated. Then, encrypt the image based on the square values. The image is being encrypted by the PMS algorithm. The encrypted image is transmitted to the receiver. The receiver will decrypt the image by the reverse process of the encryption. The encrypted image provided by the algorithm is different from the plaintext image so we can securely transmit over the internet. After decryption, the resulting image provided by the proposed technique will be same as the original plaintext image.