A color image authenticated encryption using conic curve and Mersenne twister

A robust secure image transmission scheme has to achieve all the security services as confidentiality, authentication, integrity and nonrepudiation with a reasonable efficiency. An authenticated image encryption scheme which achieves all these services is proposed in this paper. The scheme uses pseudorandom sequence Public-key cryptosystem design based on factoring and discrete logarithmsenerated by Mersenne’s twister with XOR operation for image encryption and proposes two hard problems based digital signature: conic curve discrete logarithm problem (CCDLP) and Integer Factorization Problem (IFP) which achieves a highly secure system with efficient point operations and inverses. For efficient transmission, the image signature is embedded in the cipher image. Security analysis of the scheme is provided. According to the results, the proposed scheme is efficient and achieves an excellent long term security.