Fuzzy-Based Session Key as Restorative Power of Symmetric Key Encryption for Secured Wireless Communication

Abstract

A symmetric key encryption with fuzzy-based session key has been proposed for wireless communication by satisfying the key issues like security and increase the strength of the symmetric key. In this paper, we generate “n” number of sub-keys from symmetric key using XOR operation between a random character matrix and symmetric key. Among these sub-keys, we generate a session key using fuzzy logic. Now the encryption is done by using this session key and a symmetric key. Here, we transmit the session key to the recipient end by amalgamating with the symmetric key. This amalgamated form is concatenated with ciphertext and sent to the recipient end for decryption with these keys. Here, a new authentication scheme is used with cipher text. Different types of randomness tests have been done to test the randomness of our session key. The brute-force attack analysis for this scheme and comparative study with the existing standard methods has been done with satisfactory results.