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In CIS'2006 Li et al proposed a proxy ring signature, which allows proxy signer to sign messages on behalf of the original signer while providing anonymity. At the same conference, Weng et al proposed an ID-based key-insulated signature scheme. In this paper, we point out that the former scheme is not correctly specified. The required hash function H2 should be a map from an elliptic curve to itself...
We put forward a general attack against several group signatures. By checking whether schemes satisfy traceability, we show that the several group signatures are not secure. In contrast to those attacks against these schemes, the new attack is very understandable and simple. It's also the first time to show the scheme is insecure.
This paper considers the low order Hinfin controller design method for reference tracking and disturbance attenuation based on the recent development on robust control in terms of the generalized KYP (GKYP) lemma. The new design control strategy does not need to choose the weighting functions as the classical design method does so that the controller will have the same order as the controlled plant,...
This paper addresses the robust fault detection observer design for discrete LTI systems with additive model uncertainties. The observer design is investigated under the Hinfin/H- index framework in the finite frequency domain where the generalized KYP lemma is used. The threshold design and the worst undetectable fault size estimation are also considered in this paper. A practical application example...
In recent works, blind source separation (BSS) is arising as a promising approach to the biomedical application. From the BSS point of view, fetal electrocardiogram (FECG) extraction is achieved through the estimation of the independent sources of fetal cardiac bioelectric activity. In this contribution, a BSS method based on higher-order statistics is contrasted with a significant classical technique...
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