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In 2007, Fu Chong et al. proposed an improved chaos-based stream cipher. The secret key of Fu's cipher with 2158 key space size composes of 3 independent chaos initial states. In this paper, the security of Fu's chaotic cipher is investigated and the information leak of chaos map that we call preimage compressibility is discovered. We guess one chaos initial state and obtain two sampling quantified...
In this paper, we present a new variant of the self-shrinking generator (SSG). The new construction inherits the conceptual simplicity and indispensable security properties of the SSG and all the known attacks on the SSG can be frustrated by the new model. Besides, its keystream has ideal run distribution and the flexibility of the new construction allows for efficient practical implementations at...
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