AUTOMATIC TOLL VERIFICATION USING RFID AND SECURE AUTHENTICATION BASED ON NOVEL HYBRID SAFERPLUS ALGORITHM

Encryption is one of the most effective method to achieve the data security and privacy. The encryption techniques hide the original content of a data in such a way that the original information is recovered only through using a key called decryption process. The main goal of the encryption is to secure or protect the data from the unauthorized user can access that can viewing or changing the data. As a result, this encryption can be applied in many of the different techniques such as substitution, shifting or mathematical operations. In the past year there are several symmetric algorithms have been developed. The proposed work is more efficient and provides more security for authentication and encryption. In this paper an efficient symmetric key base algorithm is used to encrypt and decrypt the text data. Our proposed algorithm uses three keys in the encryption and decryption processes instead of only one key for controlling variable bit sizes of the blocks (either 1or 2, or 4 or 8 bits), which determine the state table numbers. These tables are constructed from the addition in a Galois field (GF(2n)) based on the block bit size to increase the complexity of the proposed algorithm. The results are evaluated based on the principles of complexity, time encryption, throughput, encryption time and decryption time histogram analysis, Number of Pixel of Change Rate (NPCR).