Analysis of traditional and modern image encryption algorithms under realistic ambience

摘要

Cryptography (encryption/decryption) is one of the prevailing mechanisms for protection of information (data or image) in the growing era of computerized exchange. It is the art of securing data/image by changing it into an unreadable format, called cipher text/image. Encryption mechanism is said to be efficient if it offers high security and robustness against attacks, and endow with very low correlation value between cipher and the original information. Enormous techniques and corresponding survey papers are available in literature considering only a few methods or parameters into account, but there is a stem need of investigation, which thoroughly considers vast variety of techniques and compares them in the light of numerous performance metrics under the influence of wide variety of probable threats. In view of the fact, this paper has taken account of almost all traditional, modem, chaotic, and quantum-chaotic based methods under the influence of prevalent intimidation and does a comprehensive investigation based on various performance metrics. To measure the efficacy, all the mechanisms are implemented in MATLAB-2014. Chaos and Quantum based algorithms are the superlative in comparison to others presented in literature under most of the extensive threats (attacks, noises etc.) and can resist brute force attacks due to large key space. In addition, suggestions for future scope have been given.