An Enhanced Asymmetric Cryptosystem using Multiple Key System

Abstract

An increase in network technology development has its own downside; thus as more connections are established with various global computer networks daily, the more exposed the connected systems are to unauthorized access, thus making security of data very important to address. Internet based transaction applications such as internet banking, online shopping, etc., involves sharing of very sensitive information between two or more parties that should be confidential. This requires very secure end-to-end connections that will ensure the data integrity, confidentiality, authenticity, etc. Cryptography is one of the most reliable and best, if not the best way to keep sensitive data from unauthorized users. This implies a good cryptosystem that maximizes security of the information been transferred and minimizes a substantial amount of delay time is needed. This is dependent on the particular cryptosystem one chooses to secure information. Also of the two known types of cryptosystems, the best in security is asymmetric cryptosystems, which uses two different keys; one for encryption and the other for decryption, whiles symmetric cryptosystems use the same key for both encryption and decryption. The essential features of asymmetric cryptosystems that determines their efficiency and security are; encryption computation time, decryption computation time, performance, encryption throughput, decryption throughput, throughput, randomness, key length and Operation per Instruction (O/I). This research seeks to examine these properties of some asymmetric cryptosystems and subsequently develop a proposed cryptosystem that is more secure and efficient. The results of this research clearly demonstrate that, the proposed cryptosystem has better results for all the properties stated above.

Comparative Study of Elgamal and Luc Algorithm in Cryptographic Key Generation

“…The difference profile during both process (encryption and decryption) of these two algorithms is strongly influenced by the size of public and private keys, where the data length being processed is important here [25], [26]. It can be seen that during encryption, LUC executed data faster than ElGamal because smaller number of data was processed.…”