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In the above paper, Yang et al. have proposed a multi-authority ciphertext-policy attribute-based encryption-based data access control for cloud storage, in which the authors claimed that the mechanism in dealing with attribute revocation could achieve both forward security and backward security. Unfortunately, our further analysis and investigation show that their work adopts a bidirectional re-encryption...
Query privacy protection is an important part of the privacy protection in LBS. Currently, query privacy protection mainly consider the two typical attack models: query sampling attack and query homogeneity attack. The two attack model can be prevented by ensuring that cloaking regions satisfy ksharing property or l-diversity property, however, when the overall POI (point of interests)distribution...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.