Secure fingerprint image system
AssigneeAnalog Devices, Inc.
InventorsPatrick RIEHL, Tze Lei POO
Life of this patent
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Abstract
Herein disclosed are approaches for protecting sensitive information within a fingerprint authentication system that can be snooped and utilized to access the device, secured information, or a secured application. The approaches can utilize encryption keys and hash functions that are unique to the device in which the fingerprint authentication is being performed to protect the sensitive information that can be snooped.
Claims20
A device that is to implement fingerprint authentication, comprising:
- an image sensor to capture an image of a fingerprint of a user for the fingerprint authentication;
- and
- a readout integrated circuit (ROIC) coupled to the image sensor, the ROIC to utilize an encryption key or a hash function to perform encryption or hashing of the image, wherein the encryption key or the hash function is unique to the device.
One or more computer-readable media having instructions stored thereon, wherein the instructions, when executed by a device, cause the device to:
- capture an image of a fingerprint;
- encrypt or hash the image to produce an encrypted image or a hashed image, wherein an encryption key or a hash function utilized to encrypt or hash the image is unique to the device;
- and
- provide the encrypted image or the hashed image for fingerprint authentication.
A device for fingerprint authentication, comprising:
- a trusted execution environment (TEE) to determine a result of the fingerprint authentication;
- and
- a readout integrated circuit (ROIC) to:
- generate an encryption key or a hash function, the encryption key or the hash function being unique to the device;
- and
- provide the encryption key or a hashed image of a fingerprint produced by the hash function to the TEE via an interface, the encryption key or the hashed image to be utilized for the fingerprint authentication.
Dependencies are inferred from the claim text.