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- W2898201725 abstract "VirtualCert is a machine-checked model of virtualization that can beused to reason about isolation between operating systems in presenceof cache-based side-channels. In contrast to most prominent projectson operating systems verification, where such guarantees are proveddirectly on concrete implementations of hypervisors, VirtualCertabstracts away most implementations issues and specifies the effectsof hypervisor actions axiomatically, in terms of preconditions andpostconditions. Unfortunately, seemingly innocuous implementationissues are often relevant for security. Incorporating the treatment oferrors into VirtualCert is therefore an important step towardsstrengthening the isolation theorems proved in earlier work. In thispaper, we extend our earlier model with errors, and prove thatisolation theorems still apply. In addition, we provide an executable specification of the hypervisor, and prove that it correctly implements the axiomatic model. The executable specification constitutes a first step towards a more realistic implementation of a hypervisor, and provides a useful tool for validating the axiomatic semantics developed in previous work." @default.
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- W2898201725 date "2013-01-01" @default.
- W2898201725 modified "2023-09-26" @default.
- W2898201725 title "Formally Verified Implementation of an Idealized Model of Virtualization." @default.
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