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The data-mining-as-a-service (DMaS) paradigm enables the data owner (client) that lacks expertise or computational resources to outsource its mining tasks to a third-party service provider (server). Outsourcing, however, raises a serious security issue: how can the client of weak computational power verify that the server returned correct mining result? In(More)
The data-cleaning-as-a-service (<i>DCaS</i>) paradigm enables users to outsource their data and data cleaning needs to computationally powerful third-party service providers. It raises several security issues. One of the issues is how the client can protect the private information in the outsourced data. In this paper, we focus on data deduplication as the(More)
In this paper, we focus on the problem of result integrity verification for outsourcing of frequent item set mining. We design efficient cryptographic approaches that verify whether the returned frequent item set mining results are correct and complete with deterministic guarantee. The key of our solution is that the service provider constructs(More)
Cloud computing is popularizing the computing paradigm in which data is outsourced to a third-party service provider (server) for data mining. Outsourcing, however, raises a serious security issue: how can the client of weak computational power verify that the server returned correct mining result? In this paper, we focus on the specific task of frequent(More)
Computational grids are a promising platform for solving platform for solving large-scale resource intensive problems. Security problems become an urgent and complex undertaking for the application of grid computing. Traditional approaches to proving certificates validity such as CRL and OCSP are problematic in some areas. A new mechanism LSSM(Low-level(More)
Cloud computing enables the outsourcing of big data analyt-ics, where a third-party server is responsible for data storage and processing. In this paper, we consider the outsourcing model that provides string similarity search as the service. In particular, given a similarity search query, the service provider returns all strings from the outsourced dataset(More)
The cloud paradigm enables users to outsource their data to computationally powerful third-party service providers for data management. Many data management tasks rely on the data dependency in the outsourced data. This raises an important issue of how the data owner can protect the sensitive information in the outsourced data while preserving the data(More)
The End Entity Certificates (EECs) revocation mechanism in Grid Security Infrastructure (GSI) adopts Certificate Revocation List (CRL) currently. However, CRL is an inefficient mechanism with drawbacks of " time granularity problem " and unmanageable sizes. This paper presents a new EECs revocation mechanism MEECRM (Mediated RSA-based End Entity(More)