Image Encryption based on AES Algorithm and XOR Operation

Data Security is primary concern for every communication system. The relentless growth of Internet and communication technologies has made the extensive use of images unavoidable. There are many ways to provide security to data that is being communicated. This Paper describes a design of effective security for communication by AES algorithm for encryption and decryption.

This is to certify that the thesis entitled "Image Encryption Based on AES" submitted by Mr. SANILA P (KNR22ECSE06) to the APJ Abdul Kalam Technological University in partial fulfillment of the requirements for the award of the Degree of Master of Technology in Electronics and Communication Engineering (Signal Processing & Embedded Systems) is a bonafide record of the project work carried out by him under my supervision and guidance. This report in any form has not been submitted to any other University or Institute for any purpose.

2013

In the era of computer and internet technology, multimedia protection is becoming increasingly jeopardized. Therefore numerous ways of protecting information are being utilized by individuals, businesses and governments. This paper mainly focuses on a new AES a based image encryption technique using binary code which is expected to provide safety of images travelling over the internet. In order to evaluate the performance, the proposed image encryption technique was measured through a series of tests. These tests included a histogram analysis, information entropy, correlation analysis and differential analysis. Experimental results showed that the proposed encryption technique has satisfactory security and is more efficient than using the AES algorithm alone which makes it a good technique for the encryption of multimedia data. The results showed that the histogram of an encrypted image produced a uniform distribution, which is very different from the histogram of the plain image, a...

—With the rapid development of network and communication technology, digital image communication has become an important way of information transmission.Therefore, much more attention has been paid to the development of the digital image encryption technology.In this paper ,we propose a digital image encryption technology based on AES algorithm,and the algorithm implementation in MATLAB.Then,we perform digital image processing,obtain the date that can use the AES encryption algorithm,combine both approaches.Then,the digital image can be encrypted,and the algorithm is realized in MATLAB simulation.Through the comparison of the histogram analysis and the analysis of the key,the result has showed that the method can better realize the effect of encryption and decryption.

2007

With the fast evolution of digital data exchange, security information becomes much important in data storage and transmission. Due to the increasing use of images in industrial process, it is essential to protect the confidential image data from unauthorized access. In this paper, we analyze the Advanced Encryption Standard (AES), and we add a key stream generator (A5/1, W7) to AES to ensure improving the encryption performance; mainly for images characterised by reduced entropy. The implementation of both techniques has been realized for experimental purposes. Detailed results in terms of security analysis and implementation are given. Comparative study with traditional encryption algorithms is shown the superiority of the modified algorithm.

International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2021

An Image Encryption and Decryption Using AES (Advance Encryption Standard) Algorithm is proposed in the project. Due to increasing use of image in various field, it is very important to protect the confidential image data from unauthorized access. The design uses the iterative approach with block size of 128 bit and key size of 128, 192 or 256 bit. The numbers of round for key size of 256 bits is 14 , for 128 bits is 10 and for 192 bits is 12. As secret key increases the security as well as complexity of the cryptography algorithms. In this paper , an algorithm in which the image is an input to AES Encryption to get the encrypted image and then input it to AES Decryption to get the original image is proposed and explained which will further be implemented by me. The paper shows the study in which a system could be used for effective image data encryption and key generation in diversified application areas, where sensitive and confidential data needs to be transmitted along with the image. I.

In today's world images that are being transmitted over internet are not safe. Therefore, it is required to transmit an image using some secure methods. Many algorithms can be applied but AES is more secure than others. Here AES algorithm is used to encrypt images with certain modifications. Modifications are done to the shift row stage and mix column stage. These changes have been done to reduce the computation time of AES. The key is generated using IDEA (International Data Encryption Algorithm) and mix column step is added to the key part to make the key stronger because the attackers focus on the key to get the plain text. Hence two phases are involved in this process. One is the encryption phase while the other is the decryption phase. First the image will be passed to the modified AES for the encryption process and then the ciphered image will be send to the receiver for decryption process. The modified AES can use both HD and normal images.

A fast image cryptosystem based on AES is verified in this paper. The plain image is divided into data blocks of size 128 bits. The first block of plain image is permutated by an initial vector. Then, AES in cipher block chaining mode is used to encrypt each block sequentially. The initial vector and cipher image are transmitted to the decryption party through the public information channel. The decryption party use the secret key and initial vector to decrypt the cipher image to obtain the original image. Simulation results show that this image cryptosystem is both secure and high-speed, which can be used as the comparison basement of newly proposed image cryptosystems based on chaotic systems.

Image encryption is one of the most methods of information hiding. A novel secure encryption method for image hiding is presented in this paper. The proposed method provides good confusion and diffusion properties that ensures high security due to mixing the two Boolean operations: XOR and Rotation that are done on the bits of the pixels in the image. This method is implemented by firstly doing a sequential XOR operation on all the bits of pixels in the image, and secondly makes a circular rotate right of these bits. These two operations are repeated many times during the encryption phase. The security and performance of the proposed encryption method have been evaluated by applying it on images and analyze the recorded results using key space analysis, key sensitivity analysis, and statistical analysis. The performance experiments show that the proposed method is promising to use effectively in wide fields of image encryption.

International journal of engineering research and technology, 2013

This paper aims at improving the level of security and secrecy provided by the digital gray scale image encryption. The image encryption and decryption algorithm is designed and implemented to provide confidentiality and security in transmission of the image based data as well as in storage. Since the pixel of image is highly correlated to their neighboring pixels. Due to this strong correlation any pixel can be practically predicted from a value of its neighbors. So there is a need of a technique that can shuffle the pixels to reduce the correlation between the neighbor pixels. Hence we used Scrambling technique that Shuffles the pixels of image .This Scrambled image is called transformed image. The transformed image then divided into 2 pixels x 2 pixels blocks and each block is encrypted using XOR operation by four 8-bit keys. The total size of key in our algorithm is 32 bit long which proves to be strong enough. The proposed encryption algorithm in this study has been tested on some Gray Scale images and showed good results.

2014

Now a day’s rapid increasing growth of internet and multimedia data, security is main problem in storage and communication of images. The solution of this multimedia data can be solved by using encryption. There are various techniques available to protect the image data from unauthorized access. In this paper, authors reviewed different existing techniques of image encryption and also discussed the basic knowledge of Cryptography. Keywords— Chaotic Map, Cryptography, Decryption, Encryption, SCAN pattern, Security.

TJPRC, 2013

Communication is a meaningful exchange of information between two or more entities. In this era of e-communication i.e. the transmission of non-physical data that has been encoded digitally for the purpose of storage and processing of information, the first concern is about the security of the content which is shared during communication. Security is a continuous process via which data can be secured from several active and passive attacks. Encryption technique protects the confidentiality of a message or information which is in the form of multimedia (text, image, and video). In this paper, a new symmetric image encryption algorithm is proposed based on Henon’s chaotic system with byte sequences applied with a novel approach of pixel shuffling of an image which results in an effective and efficient encryption of images. By increasing confusion and diffusion, statistical analysis and experimental analysis of key sensitivity proved that the proposed image encryption algorithm resulted in a new dimension for secure image transfer in digital transmission world.

PH.D pattern recognition &image processing student of master computer Abstract Image Encryption is important for protecting image information. In this paper a proposed an algorithm the two functions as a function of the chaotic Henon map and the Chen 's map , each in three dimensions to encrypt color images each of which used an XOR operation between the output of the process between the Henon MAP and outputs with Chen 's MAP for output to be used in this output in the encryption and decryption process color of the image , the performance of the algorithm has been analyzed and results show that the algorithm has a very long key space , and high sensitivity for small changes in key which makes the algorithm Immune to Brute force attacks , and it can resist the differential and statistical attacks , in addition to having very high encryption and decryption speed , the receiver can detect any changes to the encrypted image during transmission. the algorithm has been implemented and analysis done by using MatLab R2008a software.

Academic journal of Nawroz University, 2022

Encryption is one of the measures that ensure the security of images used in various fields such as military understanding, secure clinical imaging offices, Internet and intranet media, electronic banking, and individual association images such as Facebook, WhatsApp, Twitter, etc. On this huge number of images that are sent in a free and open link either during selection or messaging; Then their security ends up being a central need in individual insurance organizations and the arrangement. This article audits and summarizes various image encryption systems to further develop advanced image encryption strategies that operate with expanded flexibility and security.

— Steganography is the art of hiding the fact where communication is taking place, by hiding information in other information. Steganography becomes more important as more people join the cyberspace revolution.. In contrast to cryptography, it is not to keep others from knowing the hidden information but it is to keep others from thinking that the information even exists. Steganography include an array of secret communication methods that hide the message from being seen or discovered. Many different carrier file formats can be used, but digital images are the most popular because of their frequency on the internet. For hiding secret information in images, there exists a large variety of steganography techniques some are more complex than others and all of them have respective strong and weak points. Different applications may require absolute invisibility of the secret information, while others require a large secret message to be hidden. This project report intends to give an overview of image steganography, its uses and techniques. In addition to this our project also adds security to both the data hidden and the image that carries the information. Security is provided by Encrypting the data that is sent in the image and again encrypting the image that carries the information using AES algorithm. This encryption of the data and image thus provides double security layer.