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THEMIS: A Mutually Verifiable Billing System for the Cloud Computing Environment
July-Sept. 2013 (vol. 6 no. 3)
pp. 300-313
Ki-Woong Park, Korea Advanced Institute of Science and Technology, Daejeon
Jaesun Han, NexR Corporation, Seoul
JaeWoong Chung, Intel Co. Ltd., Santa Clara
Kyu Ho Park, Korea Advanced Institute of Science and Technology, Daejeon
With the widespread adoption of cloud computing, the ability to record and account for the usage of cloud resources in a credible and verifiable way has become critical for cloud service providers and users alike. The success of such a billing system depends on several factors: The billing transactions must have integrity and nonrepudiation capabilities; the billing transactions must be nonobstructive and have a minimal computation cost; and the service level agreement (SLA) monitoring should be provided in a trusted manner. Existing billing systems are limited in terms of security capabilities or computational overhead. In this paper, we propose a secure and nonobstructive billing system called THEMIS as a remedy for these limitations. The system uses a novel concept of a cloud notary authority for the supervision of billing. The cloud notary authority generates mutually verifiable binding information that can be used to resolve future disputes between a user and a cloud service provider in a computationally efficient way. Furthermore, to provide a forgery-resistive SLA monitoring mechanism, we devised a SLA monitoring module enhanced with a trusted platform module (TPM), called S-Mon. The performance evaluation confirms that the overall latency of THEMIS billing transactions (avg. 4.89 ms) is much shorter than the latency of public key infrastructure (PKI)-based billing transactions (avg. 82.51 ms), though THEMIS guarantees identical security features as a PKI. This work has been undertaken on a real cloud computing service called iCubeCloud.
Index Terms:
Monitoring,Cloud computing,Protocols,Digital signatures,Computer architecture,Grid computing,and resource allocation,Records,verification,transaction processing,pricing
Citation:
Ki-Woong Park, Jaesun Han, JaeWoong Chung, Kyu Ho Park, "THEMIS: A Mutually Verifiable Billing System for the Cloud Computing Environment," IEEE Transactions on Services Computing, vol. 6, no. 3, pp. 300-313, July-Sept. 2013, doi:10.1109/TSC.2012.1
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