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KMID : 0896220020220010265
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Journal of Daegu Health College
2002 Volume.22 No. 1 p.265 ~ p.280
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Keystream Generation Method using Arbitrary Threshold
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Jung Sung-Yong
Lee Jae-Do
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Abstract
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As part of efforts to improve the problems of LFSR keystream being weak to periodicity and correlation attacks, research are being increased to generate keystream for stream cyptosystem using features of the chaos signal. However, lacking is the research aimed to generate keystream sufficient the balance and randomness characteristics and analyze the characteristics of ciphertext in the generating of chaos keystream. This paper suggests an algorithm. Thus, as we use the method forapplying the threshold dependent on the algorithm with the problems of arbitrary threshold application improved.
The test results confirm that the keystream generated through the suggested algorithm improved its balance and randomness features.
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KEYWORD
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