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- W2525658600 abstract "Computation outsourcing using virtual appliance is getting prevalent in cloud computing. However, with both hardware and software being controlled by potentially curious or even malicious cloud operators, it is no surprise to see frequent reports of security accidents, like data leakages or abuses. This paper proposes Kite, a hardware-software framework that guards the security of tenant’s virtual machine (VM), in which the outsourced computation is encapsulated. Kite only trusts the processor and makes no security assumption on external memory, devices, or hypervisor. Unlike prior hardware-based approaches, Kite retains transparency with existing VM and requires few changes to the (untrusted) hypervisor by introducing VM-Shim mechanism. Each VM-Shim instance runs in between its VM and the hypervisor, which only transfers necessary information designated by the VM to the hypervisor and external environments. Kite also considers the high-level semantic of interaction between VM and hypervisor to defend against attacks through legitimate operations or interfaces. We have implemented a prototype of Kite’s secure processor in a QEMU-based full-system emulator and its software components on real machine. Evaluation shows that the performance overhead of Kite ranges from 0.5-14.0 percent on simulated platform and 0.4-7.3 percent on real hardware." @default.
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- W2525658600 date "2017-07-01" @default.
- W2525658600 modified "2023-09-24" @default.
- W2525658600 title "Secure Outsourcing of Virtual Appliance" @default.
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- W2525658600 doi "https://doi.org/10.1109/tcc.2015.2469657" @default.
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