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Cloud computing is revolutionizing how information technology resources and services are used and managed but the revolution comes with new security problems. Among these is the problem of securely managing the virtual-machine images that encapsulate each application of the cloud. These images must have high integrity because the initial state of every virtual machine in the cloud is determined by some image. However, as some of the enefits of the cloud depend on users employing images built by third parties, users must also be able to share images safely.
Wei et al. (Fri,) studied this question.