A New Method of Encryption Algorithm Based on Chaos and ECC

Chaotic encryption algorithm represents a new encryption way with less memory consumption and operation time. However, the chaotic sequences will cause the phenomenon of short period due to the computational accuracy of hardware processing, which brings the security problem. The Elliptic Curve Cryptography (ECC), which is famous for its high efficiency, has been proved as one of the most safe and effective public key cryptosystems. But it is inefficient to improve the security from increasing the length of key. This paper aims to improve its security through combining the chaotic encryption algorithm and the ellipse encryption algorithm. In this paper, we design a encryption method that processes the plaintext using the one-dimension Logistic sequence before encrypting it to provide the first level of security, and encrypts it using ECC encryption algorithm which had been optimized to provide the second level of security. It does not only improve the security comparing with the individual algorithm, but also avoid the resource consumption caused by increasing the length of the key in ECC encryption system.