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US 2022/0188468 A1Published application
System memory information protection with a controller
AssigneeHewlett Packard Enterprise Development LP
InventorLuis Luciani
Life of this patent
Estimating the term…
Abstract
In some examples, a controller includes a secure memory to store a key, and a processor to access a system memory that is external of the controller and that is accessible by a main processor separate from the controller, protect information retrieved from the system memory using the key to produce protected information, and store the protected information in the system memory.
Claims20
A controller comprising:
- a secure memory to store a key;
- and
- a processor to:
- access a system memory that is external of the controller and that is accessible by a main processor separate from the controller,
- protect information retrieved from the system memory using the key to produce protected information, and
- store the protected information in the system memory.
3 more elements
A non-transitory machine-readable storage medium comprising instructions that upon execution cause a controller to:
- receive an indication to protect information in a system memory of a computer system, the system memory separate from the controller;
- read the information from the system memory;
- protect, using a key in the controller that is inaccessible to an entity outside of the controller, the information to produce protected information;
- and
- write the protected information to the system memory.
2 more elements
A method of a controller, comprising:
- storing a key in a secure memory in the controller;
- receiving, from an entity outside the controller, an indication to protect information in a system memory of a computer system, the system memory external of the controller;
- performing a direct memory access (DMA) read of information in the system memory;
- protecting the information using the key to produce protected information, and
- performing a DMA write of the protected information to the system memory.
2 more elements
Dependencies are inferred from the claim text.