Block cipher security evaluation based on fuzzy logic

The main goal of this paper is to present of security evaluation of block cipher use in wireless network. Information security contributes directly to increase level of trust between users by providing an assurance of confidentiality, integrity, and availability of sensitive information of the network. In this paper, evaluations analysis of RC5, Blowfish and DES block cipher algorithms have been done on the basis of block size, numbers of round, and key size of evaluation modeling based on fuzzy logic tool of MATLAB 2012a. Three metrics are considered for using crypto algorithms for wireless network security. These three algorithms have a variable block size, number of rounds and a variable key size in their structure. Performances of RC5, Blowfish and DES algorithms have been evaluated on variables range of metrics of key size, number of rounds, and block size in this paper. Presents the results of evaluation for security level of crypto have shown the security level depending on the structure of algorithm.