HARDWARE SECRET USAGE LIMITS

摘要

A hardware secret is securely maintained in a computing device. The device operates in accordance with a usage limit corresponding to a limited number of operations using the hardware secret that the device is able to perform. Once the device reaches a usage limit, the device becomes temporarily or permanently unable to perform additional operations using the hardware secret.

主权项

1. A computer-implemented method, comprising:
under the control of a computing device,
storing, in the computing device, a secret that:
has a usage limit that corresponds to a quota on a number or rate of cryptographic operations performable using the secret, the computing device being unable to unilaterally exceed the usage limit; andis securely stored by the computing device so as to be at least programmatically unexportable from the computing device;performing one or more cryptographic operations using the secret of the one or more hardware secrets, where, as a result of the secret being associated with the usage limit, the one or more operations are performed in accordance with the usage limit; andproviding a result of performance of the one or more cryptographic operations.