Security Enhancement in Next Generation Networks using Enhanced AES with RC4 and Dynamic S-box

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Encryption is primary method of protecting valuable electronic information transmitted over the networks. SSL/TLS can help to secure transmitted data using various encryption algorithms. AES is one of ciphering algorithm which is used for encryption, decryption of data to provide confidentiality for end-toend data transmission. To provide end-to–end security TLS/SSL (Transport layer security) is used. This paper presents an enhancement of AES algorithm by converting static S-box into dynamic using RC4 and key scheduling thus making the system resistant to linear and differential cryptanalysis by preventing repetition of cipher key. To increase the complexity of system AES is to be used in round structure. In round structure, AES S-box changes in every round. Comparison of the traditional and enhanced AES will be made on the basis of encryption Time, decryption time, CPU usage and throughput. Here focus is to achieve speed compatible with next generation LTE network.