Importance

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Abstract

A computing platform (20) is adapted for secure use of trusted user input. The computing platform (20) comprises a user input device (14), a first isolated operating environment (21) for execution of applications requiring use of trusted user input, a second isolated operating environment (22) adapted for secure processing of information relating to a user, and a third isolated operating environment (23) adapted for secure communication with the user input device (14). In this computing platform, no isolated operating environment can communicate with another isolated operating environment other than by a secure path (26, 27) therebetween. When an application executing in the first isolated operating environment requires provision of trusted user input, the user provides user input through the user input device (14) to the third isolated operating environment (23). The user input is then provided to the second isolated operating environment (22), and the second isolated operating environment (22) provides a service relating to the trusted user input as required by the application executing in the first operating environment (21).

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First Claim