A Novel 2D Cat Map based Fast Data Encryption Scheme

The security is an essential part of any communication system. Presently there are many types of encryption methods are available in symmetric and asymmetric key schemes because of long time requirement asymmetric schemes are not preferred for the large data encryption. Symmetric scheme is much better when compared for decoding time, in symmetric key the same key is used for both coding and decoding also in this scheme a digital signal is encrypted by relatively simple operations like EX-OR, hence for its necessary that the encryption sequence generated by the must have noise-like autocorrelation, cross-correlation, uniformity, attractors, etc. according to chaotic theory, chaotic sequences are best suited and they have all these properties. In this paper; first, we design and simulate a 2D cat mat using Matlab then using it as 1D stream generator for encryption Second, we show the a comparative study of the dynamical statistical properties obtained under simulation.