US Patent Application 18170584. SYSTEM AND METHOD FOR PROTECTING SOFTWARE LICENSING INFORMATION VIA A TRUSTED PLATFORM MODULE simplified abstract

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SYSTEM AND METHOD FOR PROTECTING SOFTWARE LICENSING INFORMATION VIA A TRUSTED PLATFORM MODULE

Organization Name

Microsoft Technology Licensing, LLC


Inventor(s)

Ronald Aigner of Redmond WA (US)


Balaji Balasubramanyan of Redmond WA (US)


SYSTEM AND METHOD FOR PROTECTING SOFTWARE LICENSING INFORMATION VIA A TRUSTED PLATFORM MODULE - A simplified explanation of the abstract

  • This abstract for appeared for US patent application number 18170584 Titled 'SYSTEM AND METHOD FOR PROTECTING SOFTWARE LICENSING INFORMATION VIA A TRUSTED PLATFORM MODULE'

Simplified Explanation

This abstract describes a method for protecting software licensing information using a trusted platform module (TPM). When a licensing server is not accessible, a license is generated for a software application by a licensing manager. The license is created using a secure register in the TPM and an asymmetric key that is specific to the software application. This key is used to generate a signature for a hashed license file. The asymmetric key is stored and associated with the license file for future license validation. A validation command is provided to check the validity of the license by verifying the signature and checking the time stamp. If the time stamp has expired or the license has been altered, the license is considered invalid.


Original Abstract Submitted

Methods for protecting software licensing information via a trusted platform module (TPM) are performed by systems and devices. When a licensing server is unreachable, a license is generated for a software application by a licensing manager. The license is generated via a secure register of the TPM using an asymmetric key, specific to the software application and policy-tied to the secure register, to generate a signature of a hashed license file for the software application. The asymmetric key is stored, mapped to the license file, and used for subsequent license validation. A licensing manager validation command is provided to validate the license using the key, as applied to the hash, to verify the signature and checking validity of the time stamp. Time stamp expiration or alteration of the license are determined to provoke invalidation indications for the validating application.

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