Programming framework for closed systems

A method for providing access to a protected resource, the method comprising:

• receiving, by an access layer of a computing device, in one sublayer of the access layer comprising a plurality of sublayers, a resource call from an unsigned software component of the computing device operating in a user mode;
• validating, by the computing device, the resource call;
• and
• exposing, by the computing device, an application programming interface to receive the resource call, the application programming interface comprising a plurality of sub-interfaces that provide the resource call from the plurality of sublayers of the access layer to the protected resource,
• wherein both signed software components that have passed a certification process and unsigned software components are executable on the computing device.

A computer-readable storage medium having stored thereon computer-executable instructions to provide access to a protected resource in a computing system, the computer-executable instructions comprising instructions to:

• generate a resource call from an unsigned software component operating in a user mode for the protected resource operating in a kernel mode;
• receive the resource call in one sublayer of an access layer comprising a plurality of sublayers;
• validate the resource call;
• and
• expose an application programming interface to perform the resource call, the application programming interface comprising a plurality of sub-interfaces that provide the resource call from the plurality of sublayers of the access layer to the protected resource,
• wherein both signed software components that have passed a certification process and unsigned software components are executable on the computing system.