Implementation of Chaos Based Cryptography in Kasumi Block Cipher
Basavaraj P. Halagali, Veena Desai · 2018
Secure transmitting of data is the most challenging task in network communication. Cryptography is a mechanism to provide message or data confidentiality (i.e. secure transmission of data) and it is an emerging technology, which is important for network security. Cellular network is the most important field of communication. Day by day so many research works are conducting on cryptography and still it's in developing phases. Hence considerable research technique or effort is still needed for secure communication in cellular networks. In this proposed work new cryptosystem is proposed based on the combination of Lorenz equations of chaos theory and KASUMI block cipher. In cryptography random numbers plays an essential role and also in so many fields. In our proposed work random numbers are generated based on chaos theory using Lorenz equations. Generated random numbers are tested using NIST test suite in order to check the randomness. KASUMI block cipher is considered for encryption of the data. The performance evaluation of encrypted data obtained from the proposed method is analyzed based on three parameters like balanced output, Hamming distance and Avalanche effect. An experimental result gives best randomness resulting in improved performance in cryptosystem.