The content distributors take content protection and Digital Rights Management of content very serious. As such many provisions already exist to make sure content is securely sent to, and only to, licensed clients. In this paper an alternative content encryption system is proposed by using the homomorphic features of asymmetric cryptography systems. Using a split-key derivative of the RSA crypt...

This literature review glances at the research that has been published in the area of chaos cryptography along with cryptanalysis of chaotic cryptosystem. It compares and contrasts the work done in different research papers towards the designing and cryptanalysis of chaotic cryptosystem for the validity of cryptosystems and improvement in encryption techniques. This review analyzes the role tha...

In Crypto 97, a public key cryptosystem based on the closest vector problem was suggested by Goldreich, Goldwasser and Halevi [4]. In this paper, we propose a public key cryptosystem applying representations of polynomials to the GGH encryption scheme. Its key size is much smaller than the GGH system so that it is a quite practical and efficient lattice based cryptosystem.

Choi et al. proposed the modified Paillier cryptosystem (M-Paillier cryptosystem). They use a special public-key g ∈ ZZ/nZZ such that gφ(n) = 1 + n mod n2, where n is the RSA modulus. The distribution of the public key g is different from that of the original one. In this paper, we study the security of the usage of the public key. Firstly, we prove that the one-wayness of the M-Paillier crypto...

In the paper [1] published in “Asiacrypt 2000”, L. Goubin and N.T. Courtois propose an attack on the TTM cryptosystem. In paper [1], they mispresent TTM cryptosystem. Then they jump an attack from an example of TTM to the general TTM cryptosystem. Finally they conclude:”There is very little hope that a secure triangular system (Tame transformation system in our terminology) will ever be propose...

A chaotic map has various features. A chaotic map has sensitivity to a change in initial conditions and parameters, and a long-term forecast becomes impossible by the iterations of a chaotic map. These features looks similar to the properties of the cryptology. For that reason, it is effective to use chaotic maps for cryptosystems. The chaotic cryptosystem is researched as an application of cha...

In this paper, we proposed a new attack against Hwang et al.’s cryptosystem. This cryptosystem uses a super-increasing sequence as private key and the authors investigate a new algorithm called permutation combination algorithm to enhance density of knapsack to avoid the low-density attack. Sattar J. Aboud [Aboud j. Sattar, “An improved knapsack public key cryptography system”, International Jo...