Design and Implementation of Encryption and Decryption Algorithm Based on Encrypted Hidden Private Key with Logical Shift and XOR Operations

In this paper a new encryption and decryption algorithm using hidden encrypted private key with logical shift and XOR operations is introduced. The strength of this algorithm is depending on the use of encrypted and hidden key and the two logical operations. The main objective of using the encrypted hidden key in the cipher-text is to solve the problem of the private key distribution and to increase the security level provided by the proposed algorithm. The proposed algorithm is investigated on six text files of various sizes and compared with three other encryption algorithms. The obtained simulation results show that the main two advantages of the proposed method are represented in the computation simplicity and security efficiency compared with AES , DES and Triple DES algorithms.