Providing secure input and output to a trusted agent in a system with a high-assurance execution environment

A method for providing a secure user interface to a secured execution environment on a system comprising said secured execution environment and an second execution environment, comprising:

• accepting output from a specific source entity in said secured execution environment;
• and
• securely transferring said output to an output device.

A computer-readable medium containing computer executable instructions to providing a secure user interface to a secured execution environment on a system comprising said secured execution environment and an second execution environment, the computer-executable instructions to perform acts comprising:

• accepting user input from a user input device;
• determining whether said user input is intended for said secured execution environment;
• if said user input is not intended for said secured execution environment, transferring said user input to said second execution environment.

A computer-readable medium containing computer executable instructions to providing a secure user interface to a secured execution environment on a system comprising said secured execution environment and an second execution environment, the computer-executable instructions to perform acts comprising:

• accepting output from a specific source entity in said secured execution environment;
• and
• securely transferring said output to an output device.

A trusted user interface engine for providing a secure user interface to a secured execution environment on a system comprising said secured execution environment and an second execution environment, comprising:

• an input trusted service provider accepting user input from a user input device, operably connected to said user device;
• a trusted input manager for determining whether said user input is intended for said secured execution environment and, if said user input is not intended for said secured execution environment, transferring said user input to said second execution environment.

A trusted user interface engine for providing a secure user interface to a secured execution environment on a system comprising said secured execution environment and an second execution environment, comprising:

• a trusted output manager that accepts output from a specific source entity in said secured execution environment;
• and that securely transfers said output to an output device.