XOR cipher

Abstract: These days, the major form of data used by a common person is images. And there have been multiple leaks of private images in the closer past due to application flaws. This paper proposes using XOR Cipher to encrypt the binary data in images pixel by pixel rather than securing it with an application so that it cannot be exploited or cracked easily. The proposed model explains multiple ways to encrypt the Image using XOR Cipher and the analysis shows that by using the proposed model, the images are properly encrypted. The proposed model was tested on various images including Mona Lisa, Apollo 11 and NebulaM83 and proper results were yielded.

Abstract: XOR cipher is a message randomization algorithm by performing XOR logical operations for plaintext and key so that it becomes a ciphertext. The problem lies in the predictable use of XOR. Therefore, it uses key security using the Three Pass Protocol. This protocol secures communication for each party. The key used for Three Pass Protocol communication is Base64. The Three Pass Protocol scheme for XOR Cipher key security using Base64 has a weakness because it is due to the Base64 encoding process which by default is easy for others to know. So that this research can be developed again to replace Base64 into a better algorithm in terms of security.

Abstract: In computer networks, digital information such as text, audio and video have been broadly exchanging over the communication system. The security of the communication system in the present day imperative conception because the information ingredient of the human life. This paper presents a new hybrid scheme for secure text message transmission. The hybrid scheme is based on Fibonacci series, XOR cipher, PN sequence, RSA, Hill cipher, one bit LSB, two bit LSB and three bit LSB. In stage I, the input text message is divided the five different segments and five different cryptography techniques are applied to these segments. In stage II, the encrypted text message has been generated to five different cryptography techniques. The encrypted text message is hiding by one bit LSB, two bit LSB and three bit LSB. In the receiver side decrypt the information using same methodology that can be adapted in the transmitter side. The application of these five different technique to different segments of the same message along with the symmetric key and asymmetric key and three type of LSB to provide confidentiality and authentication.

Abstract: This paper presents a GPU-accelerated implementation of an image encryption algorithm. The algorithm uses the concepts of a modified XOR cipher to encrypt and decrypt the images, with an encryption pad, generated using the shared secret key and some initialization vectors. It uses a genetically optimized pseudo-random generator that outputs a stream of random bytes of the specified length. The proposed algorithm is subjected to a number of theoretical, experimental, and mathematical analyses, to examine its performance and security against a number of possible attacks, using the following metrics - histogram analysis, correlation analysis, information entropy analysis, NPCR and UACI. The performance analysis carried out shows an average speedup-ratio of 3.489 for encryption, and 4.055 for decryption operation, between the serial and parallel implementations using GPU. The algorithm aims to provide better performance benchmarks, which can significantly improve the experience in the relevant use-cases, like real-time media applications.