We propose RACE, a report-based payment scheme for multihop wireless networks to stimulate node cooperation, regulate packet transmission, and enforce fairness. The nodes submit lightweight payment reports (instead of receipts) to the accounting center (AC) and temporarily store indisputable security tokens called Evidences. The reports contain the alleged charges and rewards without security proofs, e.g., […]
A novel method to extract features for iris recognition system
IrisCode, developed by Daugman, in 1993, is the most influential iris recognition algorithm. A thorough understanding of IrisCode is essential, because over 100 million persons have been enrolled by this algorithm and many biometric personal identification and template protection methods have been developed based on IrisCode. This paper indicates that a template produced by IrisCode […]
Secure Management of Personal Health Records by Applying Attribute-Based Encryption
Personal health record (PHR) is an emerging patient-centric model of health information exchange, which is often outsourced to be stored at a third party, such as cloud providers. However, there have been wide privacy concerns as personal health information could be exposed to those third party servers and to unauthorized parties. To assure the patients’ […]
Efficiently achieving data staging and caching in a cloud system
In this paper, we study this data staging problem by leveraging the dynamic programming (DP) techniques to optimally migrate, replicate, and cache the shared data items in cloud systems with or without some practical resource constraints in an efficient way while minimizing the monetary cost for transmitting and caching the data items.To this end, we […]
Optimal Resource Allocation in Self Organizing Clouds
By leveraging virtual machine (VM) technology which provides performance and fault isolation, cloud resources can be provisioned on demand in a fine grained, multiplexed manner rather than in monolithic pieces. By integrating volunteer computing into cloud architectures, we envision a gigantic self-organizing cloud (SOC) being formed to reap the huge potential of untapped commodity computing […]