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Database as a Service (DaaS) is a common service mode in Cloud Computing. Based on Feldman (t,n) VSS protocol and ElGamal homomorphism property, we proposed a privacy-preserving access control protocol for DaaS. Using Secret Sharing, we can protect the security of data owner's dataset, based on ElGamal homomorphism property, the data requester's query combining with the proxy servers' access control...
Wireless sensor networks are often deployed in hostile and unattended environments. Then two important problems for key management are presented. First, how to establish the encryption keys among sensor nodes to ensure the security of the network applications. Second, how to avoid the key being obtained especially the sensor be captured. In this paper, we proposed a novel key management method based...
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