Face recognition method and device

Abstract

The embodiment of this specification provides a face recognition method and device, the method includes: the terminal device uses the second public key to perform homomorphic encryption on the face image to be recognized to obtain the encrypted face image; sends a recognition request to the server, including the encrypted face image and the second public key; the server performs homomorphic feature processing on the encrypted face image and adds the first obfuscation homomorphically; adds the second obfuscation to the pre-stored secret face feature homomorphism; receives the obfuscation encrypted output feature and obfuscation from the server Encrypting face features; using the first private key corresponding to the first public key to decrypt the encrypted face features to obtain the first intermediate value; using the second private key corresponding to the second public key to decrypt the encrypted output features Decrypt to obtain the second intermediate value; calculate the difference between the second intermediate value and the first intermediate value; send the difference to the server, and the server determines whether the face image to be recognized matches the target user. It can improve the security and response speed of face recognition.

Description

technical field [0001] One or more embodiments of this specification relate to the computer field, and in particular, to a face recognition method and device. Background technique [0002] With the development of artificial intelligence and computer vision technology, face recognition technology, as a fast and convenient new authentication method, has been widely used in various fields, such as face payment in financial scenarios and face authentication in civil aviation scenarios , facial recognition access control in office scenarios, facial recognition authentication in hotel accommodation scenarios, etc. Compared with the traditional identity authentication methods based on swiping cards or passwords, face recognition has the advantages of non-contact, fast and effective, and difficult to forge, so it has gradually become the mainstream method of identity authentication. [0003] Face recognition technology based on servers or cloud computing requires users to upload lo...

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