Invention Grant
- Patent Title: Protection of data in memory of an integrated circuit using a secret token
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Application No.: US16592520Application Date: 2019-10-03
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Publication No.: US11436160B2Publication Date: 2022-09-06
- Inventor: Blake D. Pelton , Haohai Yu , Chirag Varde
- Applicant: Microsoft Technology Licensing, LLC
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Agency: Fiala & Weaver P.L.L.C.
- Main IPC: G06F21/00
- IPC: G06F21/00 ; G06F12/14 ; G06F9/46 ; G06F12/02 ; G06F12/0831

Abstract:
Methods, systems, apparatuses, and computer program products are provided for protecting data in a memory of an integrated circuit (IC). A process token is obtained in a special purpose IC from a host that is external to and communicatively connected to the special purpose IC. The process token is stored in a first memory portion of the special purpose IC. In response to receiving a processing request from the host, the processing request is processed, and data generated by processing the processing request is written in a second memory portion of the special purpose IC. When a read request is received to read the data in the second memory portion, a determination is made whether the read request includes a read token that matches the previously stored process token. If the read token matches the process token, the data in the second memory portion may be returned to the host.
Public/Granted literature
- US20210103528A1 PROTECTION OF DATA IN MEMORY OF AN INTEGRATED CIRCUIT USING A SECRET TOKEN Public/Granted day:2021-04-08
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