Data security using serial commutative RSA CORE for multiple FPGA system

Security systems play a vital role in protecting the important data in the organizations or multiple transceiver based communication systems and cryptography is one of the primary ways to protect the data. RSA algorithm is extensively used in the popular implementations of Public Key Infrastructures. Many cryptographic protocols and attacks on these protocols make use of the fact that the order in which encryption is performed does not affect the result of the encryption, i.e., encryption is commutative. This paper presents the implementation of a cryptography core based on Commutative RSA public key cryptography algorithm for accomplishing data security and authentication in environment comprising multiple FPGA cores without any key exchange overheads. In this work, in spite of considering conventional two terminal communications, we have implemented a scalable architecture for multi distributed FPGA based systems that realizes commutative RSA algorithm for verifying data security among multiple transceiver terminals. The proposed system architecture has used the Montgomery multiplication algorithm with exponential modular multiplication and Radix-2 multiplication based multiparty cryptography. The proposed multiplier is able to work with any precision of the input operands, limited only by memory or control constraints. The result obtained for this approach has illustrated a very high computational efficiency with minimum memory or space occupancy and higher operational frequency.