Irrational-Based Cryptosystem

Strong cryptographic security, short encryption time, and robustness against noise are three goals of cryptosystem. However, most existing chaotic cryptosystems only focus on the research of enhancing cryptographic security and shortening encryption time. To overcome drawbacks and weaknesses of the existing algorithms, the paper analyzes the pseudo-chaotic characteristics of irrational numbers and proposes a completely different algorithm for encryption. Theoretical analysis and simulation results show that the proposed algorithm has a good robustness against noise, and can effectively resist chosen-plaintext attack, statistical attack and differential attack.