Hybrid Schnorr, RSA, And AES Cryptosystem

摘要

For the past years, network security has been an important issue. Authentication and encryption have come up with the solutions which play an essential role in the system of information security. Schnorr, being one of the authentication algorithms available today lacks security for the message being passed from the sender to the receiver and vice versa. This paper integrates the Schnorr authentication algorithm with RSA and AES cryptosystems in order to encompass the level of security and reduce the effectiveness of the man-middle-attack on the system. In this method, the receiver uses the Schnorr algorithm to verify that the one sending him the message is the real sender. When the sender sends the message to the receiver and vice versa, the RSA algorithm will be used and the AES algorithm, specifically the S-box, will be used for the encryption of the password for the authentication process. This method reduces the risk of intrusion as the encrypted and decrypted messages are further mixed-up through the addition of other cryptosystems.