Image encryption and decryption in public key cryptography based on MR

Abstract

In the past decade, image encryption is given much attention in research of information security and a lot of image encryption algorithms have been introduced. Due to some intrinsic features of images like bulk data capacity and high data redundancy, the encryption of image is different from that of text; therefore it is difficult to handle them by traditional encryption methods. In the proposed work, a new image encryption algorithm based on Magic Rectangle (MR) is being applied. To begin with, the plain-image is converted into blocks of single bytes and then the block is replaced as the value of MR. Further, the control parameters of Magic Rectangle (MR) are selected randomly by the user. Subsequently the image is being encrypted with public key cryptography algorithms such as RSA, ElGamal etc. The experimental result shows that the proposed algorithm can successfully encrypt/decrypt the images with separate secret keys, and the algorithm has good encryption effect. Cipher text developed by this method will be entirely different when compared to the original image file and will be suitable for the secured transmission over the internet. Thus, this model provides an additional level of security to public key algorithm and efficient utilization of memory.

Graphical passwords: Behind the attainment of goals

“…Several researchers have proposed numerous graphical based authentication schemes to defend quite a few of previously mentioned attacks 1‐24 . Our and others analysis of these authentication schemes exhibited several severe flaws.…”

“…Amalarethinam and Sai Geetha 18 proposed public key cryptographic technique, which uses the concept of magic rectangle. During encryption, the selected image is converted into many blocks, and each block is replaced with the value of the magic rectangle.…”

A New Algorithm Based on Magic Square and a Novel Chaotic System for Image Encryption

“…Amalarethinam and Geetha [1] introduced an image encryption algorithm in view of applied Magic Rectangle (MR) as the plain picture is changed over into pieces of single bytes, and after that the square is substitute as the estimation of MR. Further, the control parameters of MR are chosen haphazardly by the client.…”

An Extensive Survey on Image Security Research Trends

“…Also, many of the research organizations as well as research communities are working on improving the image security against such manipulation techniques [10]. These encryption mechanisms are mainly categorized into symmetric and asymmetric mechanisms [11,12]. Researchers [13] introduced the Rivest Shamir and Adleman [14] RSA algorithm.…”