Invention Grant
- Patent Title: Method and apparatus for securely saving and restoring the state of a computing platform
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Application No.: US15079579Application Date: 2016-03-24
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Publication No.: US10019601B2Publication Date: 2018-07-10
- Inventor: Vincent R. Scarlata , Simon P. Johnson , Carlos V. Rozas , Francis X. McKeen , Ittai Anati , Ilya Alexandrovich , Rebekah M. Leslie-Hurd
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: INTEL CORPORATION
- Current Assignee: INTEL CORPORATION
- Current Assignee Address: US CA Santa Clara
- Agency: Nicholson De Vos Webster & Elliott LLP
- Main IPC: G06F21/64
- IPC: G06F21/64 ; H04L29/06 ; G06F21/62 ; G06F21/74 ; G06F21/81 ; G06F21/85

Abstract:
An apparatus and method for securely suspending and resuming the state of a processor. For example, one embodiment of a method comprises: generating a data structure including at least the monotonic counter value; generating a message authentication code (MAC) over the data structure using a first key; securely providing the data structure and the MAC to a module executed on the processor; the module verifying the MAC, comparing the monotonic counter value with a counter value stored during a previous suspend operation and, if the counter values match, then loading processor state required for the resume operation to complete. Another embodiment of a method comprises: generating a first key by a processor; securely sharing the first key with an off-processor component; and using the first key to generate a pairing ID usable to identify a pairing between the processor and the off-processor component.
Public/Granted literature
- US20160203340A1 METHOD AND APPARATUS FOR SECURELY SAVING AND RESTORING THE STATE OF A COMPUTING PLATFORM Public/Granted day:2016-07-14
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