Performance analysis of Encryption and Decryption Algorithms for Securing Images

This paper focuses mainly on the different image encryption algorithms and various parameters. As the use of digital techniques for transmitting and storing images are increasing, it becomes an important issue that how to protect the confidentiality, integrity and authenticity of images. There are various techniques to encrypt the images for making the images more secure. Therefore, along with security, factors like implementation cost and performance, speed of different encryption algorithms also needs to be considered for practical implementation. Parameters like Histogram, Information entropy, Correlation coefficient and Encryption Ratio need to be analyzed for comparative performance analysis of various encryption algorithms. Keywords—: Encryption, Decryption, Block based transformation algorithm, Chaotic map algorithm, Region based selective image encryption algorithm