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US 10,872,175 B2Granted
Erasing a cryptographic item in a memory of a device in response to a change of an operating mode of the device
AssigneeFortanix, Inc.
InventorsAndrew Leiserson, Jethro Gideon Beekman
Life of this patent
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Abstract
An indication of a change to an operating mode of a device may be received. A cryptographic item stored at a memory of the device may be identified. In response to receiving the indication of the change to the operating mode of the device, the cryptographic item stored at the memory may be modified. The device may operate in the changed operating mode based on the modified cryptographic item.
Claims12
A method comprising:
- receiving an indication of a change to an operating mode of a device, wherein the indication of the change to the operating mode of the device corresponds to a detection of a tampering of the device, and the tampering of the device is associated with an opening of the device;
- identifying a cryptographic item stored at a memory of the device, wherein the cryptographic item corresponds to an identification of the device with a digital signature, and wherein the digital signature is based on a private key that is inaccessible to the device;
- in response to receiving the indication of the change to the operating mode of the device, modifying, by a processing device, the cryptographic item stored at the memory;
- and
- operating the device in the changed operating mode based on the modified cryptographic item.
2 more elements
A system comprising:
- a memory;
- and
- a processing device, operatively coupled with the memory, to:
- receive an indication of a change to an operating mode of a device, wherein the indication of the change to the operating mode of the device corresponds to a detection of a tampering of the device, and the tampering of the device is associated with an opening of the device;
- identify a cryptographic item stored at a memory of the device, wherein the cryptographic item corresponds to an identification of the device with a digital signature, and wherein the digital signature is based on a private key that is inaccessible to the device;
- in response to receiving the indication of the change to the operating mode of the device, modify the cryptographic item stored at the memory;
- and
- operate the device in the changed operating mode based on the modified cryptographic item.
5 more elements
A non-transitory computer readable medium comprising data that, when accessed by a processing device, cause the processing device to perform operations comprising:
- receiving an indication of a change to an operating mode of a device, wherein the indication of the change to the operating mode of the device corresponds to a detection of a tampering of the device, and the tampering of the device is associated with an opening of the device;
- identifying a cryptographic item stored at a memory of the device, wherein the cryptographic item corresponds to an identification of the device with a digital signature, and wherein the digital signature is based on a private key that is inaccessible to the device;
- in response to receiving the indication of the change to the operating mode of the device, modifying the cryptographic item stored at the memory;
- and
- operating the device in the changed operating mode based on the modified cryptographic item.
2 more elements
Dependencies are inferred from the claim text.