| 摘要 |
There are many times when a secret needs to be used in a distributed computing system-these are often held in security tokens, such as smart cards. It may be desirable for another device, such as a computer platform to act in place of the security token as the repository of a secret, particularly for operations within a distributed computing system. Within the distributed computing system there is located a trusted entity, physically and logically resistant to unauthorized modification-this may be a trusted device located within a specific computing platform. This contains validation information which can be communicated to the security token. The security token then carries out a validation process on this validation information-if successful, the security token then provides a secret to the trusted device for use within the distributed computing system. The trusted device may be required to use this secret only for a specified period of time, or for a specific purpose or task.
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