Device comprising encryption circuitry enabled by comparing an operating spectral signature to an initial spectral signature
AssigneeWestern Digital Ventures, Inc.
InventorChristopher L. Hamlin
Life of this patent
Estimating the term…
Abstract
A device is disclosed comprising encryption circuitry for encrypting plaintext data into ciphertext data. A memory stores an initial spectral signature representing an initial spectral characteristic of the device, and a signal generator for generating an operating spectral signature representing an operating spectral characteristic of the device. A comparator compares the operating spectral signature to the initial spectral signature and enables the encryption circuitry if the operating spectral characteristic substantially matches the initial spectral characteristic.
Claims24
A device comprising:
- (a) encryption circuitry for encrypting plaintext data into ciphertext data;
- (b) a memory for storing an initial spectral signature representing an initial spectral characteristic of the device;
- (c) a signal generator for generating an operating spectral signature representing an operating spectral characteristic of the device;
- and
- (d) a comparator for comparing the operating spectral signature to the initial spectral signature, and enabling the encryption circuitry if the operating spectral characteristic substantially matches the initial spectral characteristic.
A method of enabling encryption circuitry within a device, the encryption circuitry for encrypting plaintext data into ciphertext data, the method comprising the steps of:
- (a) storing in a memory an initial spectral signature representing an initial spectral characteristic of the device;
- (b) generating an operating spectral signature representing an operating spectral characteristic of the device;
- and
- (c) comparing the operating spectral signature to the initial spectral signature, and enabling the encryption circuitry if the operating spectral characteristic substantially matches the initial spectral characteristic.
Dependencies are inferred from the claim text.