Encryption of RGB Images by Means of a Novel Cryptosystem using Elliptic Curves and Chaos
Encryption of RGB Images using Elliptic Curves and Chaos
Keywords:
Chaos, elliptic curves, hybrid cryptography, image encryption, public key encryption, computer securityAbstract
In this paper, a new symmetric cryptosystem is proposed. It will be used to carry out image encryption without compression. The performance of proposed system was evaluated using BMP format images. A significant contribution is the use of one elliptic curve with a zero constant to generate a schedule of 15 encryption keys after choosing a solution point of this one, every schedule encryption key will be of the same size as the image. On the other hand, by means of Chaos, it will be generated a permutation and its inverse permutation, both of which will be the same size as the image. Finally, it will be applied to the Elliptic Curve Integrated Encryption Scheme (ECIES) to accomplish the encryption keys distribution in a secure way. Due to the above, this is a hybrid scheme. The results over RGB images are presented to verify the performance of the proposed algorithm and it’s proposed a tool in order to measure randomness of encrypted images.