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contributed articles Doi:10.1145/ 2184319.2184339 A user s trust in a single device can be extended to many other devices. By BRyAn PARno Trust extension for Commodity Computers as soCIety rUshes to digitize sensitive information and services, users and developers must adopt adequate security protections. However, such protections often conflict with the benefits expected from commodity computers. Consumers and businesses value commodity computers because they provide good performance and an abundance of features at relatively low cost, but attempts to construct secure systems from the ground up are expensive, time-consuming, and unable to keep up with the changing marketplace.2,8,11,12 For example, the VAX VMM security kernel was developed over nine years (1981 1990), but the kernel was never deployed. This failure was due, in part, to the absence of support for Ethernet, a feature considered crucial by the time the kernel was completed but not anticipated when originally designed.11 CoMM uniCATio ns o f The AC M | j u ne 201 2 | vo l . 5 5 | no. 6 Rather than build secure systems from scratch, the tension between security and features can be resolved by extending the trust users have in one device to enable
Communications of the ACM – Association for Computing Machinery
Published: Jun 1, 2012
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