Implementation of Chaotic Rossler system in Cryptography

Security is the major important factor in data communication and networking. Cellular Networks are more vulnerable to security attacks and hence considerable security requirement is required. Hence, to meet up the security requirements in this proposed paper Rossler equation based new cryptographic technique is presented. This paper mainly focuses on encrypting the data transferred between mobile and base stations to ensure high secure environment for transmission of data across cellular networks. In the proposed method, Rossler equations are utilized to produce some numbers and S boxes are generated using random numbers, are required for the encryption of the data. Data is encrypted using KASUMI block cipher, which is the extended version of the MISTY1cipher. The obtained random numbers from Rossler equations are tested on NIST test suite to verify the randomness. Then security of the encrypted data is tested on security parameters like Hamming Distance, Balanced Output and Avalanche effect. The proposed system gives the improved avalanche effect with best randomness result.