In this paper we introduce a new fashion of quantum LFSR-based stream cipher. The basic component of LFSR based stream cipher is the LFSR (linear feedback shift register), so we describe how to build a quantum LFSR using the basic quantum gates. We have shown in our paper that this linear complexity ,period and statistical properties are identical with the classic case .We suggest a quantum stream cipher algorithm which can be built and worked in the quantum environment. | International Journal of Computer Networks and Communications Security VOL. 3, NO. 6, JUNE 2015, 248–252 Available online at: E-ISSN 2308-9830 (Online) / ISSN 2410-0595 (Print) Generate Quantum Key by Using Quantum Shift Register RIFAAT Z. KHALAF1 and ALHARITH A. ABDULLAH2 1 Department of Mathematics, Eastern Mediterranean University, North Cyprus, Turkey 2 Department of Computer, Eastern Mediterranean University, North Cyprus, Turkey E-mail: 1rifat_driaa@, ABSTRACT In this paper we introduce a new fashion of quantum LFSR-based stream cipher. The basic component of LFSR based stream cipher is the LFSR (linear feedback shift register), so we describe how to build a quantum LFSR using the basic quantum gates. We have shown in our paper that this linear complexity ,period and statistical properties are identical with the classic case .We suggest a quantum stream cipher algorithm which can be built and worked in the quantum environment. Keywords: Quantum Computation, Quantum Cryptography, Quantum Shift Register, Linear Feedback Shift Register, Stream Cipher. 1 INTRODUCTION The world has witnessed in recent major development in the information and communication technology, Computer science has entered in all areas of life, including the sending and receiving information and protects an increasingly important tremendously, Information sent and addressed to me, and this requires careful secret storage of the data to be sent. For the appearance of quantum computing and quantum communication, it becomes increasingly important to develop methods for protecting quantum information versus the opponent effects of noise [1][2][3]. Researchers have developed in the field of quantum information many techniques to protect the quantum information [4][5][6]. Stream cipher systems that are used a secret key in the process of encryption and decryption, the stream cipher systems are one of the types of modern stream cipher .
