Multipurpose Strong Stream Cipher Algorithm

Author:   Louay F. Hasan

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Abstract

Nowadays the data telecommunication security has been provided by most of wellknown stream cipher algorithms which are already implemented in different secure protocols such as Group Special Mobile or General System for Mobile Communications (GSM), Secure Socket Layer (SSL), Transport Layer Security (TLS), Wired Equivalent Privacy (WEP), Bluetooth etc. These algorithms include such as A5/1, A5/2, E0 and RC4. On the other hand, these public algorithms already faced to serious security weakness such that they do not provide enough security of proportional plain data against cryptanalysis attacks. In this paper we proposed an encryption algorithm with high security. The proposed algorithm can be implemented in high speed communication system and it’s produced data has passed all of standard cryptographic tests successfully, also it can resist wellknown attacks such as algebraic and correlation. The idea of proposed algorithm design is to cover the encryption of multi-types of data such as (text, image, Audio, video …) with high degree of security, based on criteria of the cryptographic algorithms design.

Keywords: Shift register, cryptosystem, primary key, key of message, algorithm, sequence, plaintext, ciphertext