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Police body cameras are increasingly being used in many places. While body cameras do promote accountability, there are concerns over the loss of privacy as a result of these cameras. Police departments have tried to balance these two concerns by training officers on what incidents to record, and what not to record. However, the existing approach is error prone. This paper describes an encryption-based...
Cloud computing as an emerging technology trend is expected to reshape the advances in information technology. In this paper, we address two fundamental issues in a cloud environment: privacy and efficiency. We first review a private keyword-based file retrieval scheme proposed by Ostrovsky et. al. Then, based on an aggregation and distribution layer (ADL), we present a scheme, termed efficient information...
A key approach to secure cloud computing is for the data owner to store encrypted data in the cloud, and issue decryption keys to authorized users. Then, when a user is revoked, the data owner will issue re-encryption commands to the cloud to re-encrypt the data, to prevent the revoked user from decrypting the data, and to generate new decryption keys to valid users, so that they can continue to access...
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