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2009•UUM Electronic Theses and Dissertation [eTheses] (Northern University of Malaysia)Open access

An Improved Linear Feedback Shift Register (LFSR- based) Stream Cipher Generator

Reyadh H Mahdi

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Abstract

Linear feedback shift register ( LFSR-based) stream cipher an improved design for a random key generator in a stream cipher algorithm. The proposed random key generator is simply designed to produce a very quick algorithm to be used for securing GSM communication as mobiles or in satellite communications channels, and it use to avoid attack that happen on cryptography in general and on stream cipher in specific. The simplicity of the design derived from using of four small LFSR and three Xored gates and a single (3 to 1) multiplexer on the content of 8-stages LFSR.

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Linear feedback shift register ( LFSR-based) stream cipher an improved design for a random key generator in a stream cipher algorithm. The proposed random key generator is simply designed to produce a very quick algorithm to be used for securing GSM communication as mobiles or in satellite communications channels, and it use to avoid attack that happen on cryptography in general and on stream cipher in specific. The simplicity of the design derived from using of four small LFSR and three Xored gates and a single (3 to 1) multiplexer on the content of 8-stages LFSR.

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Available abstract

Linear feedback shift register ( LFSR-based) stream cipher an improved design for a random key generator in a stream cipher algorithm. The proposed random key generator is simply designed to produce a very quick algorithm to be used for securing GSM communication as mobiles or in satellite communications channels, and it use to avoid attack that happen on cryptography in general and on stream cipher in specific. The simplicity of the design derived from using of four small LFSR and three Xored gates and a single (3 to 1) multiplexer on the content of 8-stages LFSR.

Key concepts: Stream cipher, Linear feedback shift register, Running key cipher, Shift register, Computer science, Cryptography, Self-shrinking generator, Stream cipher attack

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