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We construct the first general secure computation protocols that require no trusted infrastructure other than authenticated communication, and that satisfy a meaningful notion of security that is preserved under universal composition- assuming only the existence of enhanced trapdoor permutations. The notion of security fits within a generalization of the "angelbased" framework of Prabhakaran...
Security vulnerabilities play an increasing role within dependability procedures for information systems. However, traditional vulnerability models present several general shortcomings when matched with today requirements. To overcome these limits, we propose a vulnerability ontology based on three main enhancements: deeper integration with system asset ontology, better modelling of cause-effect relationships,...
Random key graphs are random graphs induced by the random key predistribution scheme of Eschenauer and Gligor under the assumption of full visibility. For this class of random graphs we show the existence of a zero-one law for the appearance of triangles, and identify the corresponding critical scaling. This is done by applying the method of first and second moments to the number of triangles in the...
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