Face recognition method and device

Abstract

The embodiment of the invention provides a face recognition method and device. The method comprises the steps of enabling terminal equipment to perform homomorphic encryption on a to-be-recognized face image by using a second public key to obtain an encrypted face image; sending an identification request to a server, wherein the identification request comprises an encrypted face image and a secondpublic key; enabling the server to perform homomorphic feature processing on the encrypted face image and add a first confusion in a homomorphic manner; adding a second obfuscation to a pre-stored secret state face feature homomorphism; receiving confusion encryption output features and confusion encryption face features from the server; decrypting the confused and encrypted face feature by usinga first private key corresponding to the first public key to obtain a first intermediate value; decrypting the obfuscated encrypted output feature by using a second private key corresponding to the second public key to obtain a second intermediate value; calculating a difference value between the second intermediate value and the first intermediate value; and sending the difference value to a server, and determining whether the to-be-recognized face image is matched with the target user or not by the server. The safety and the response speed of face recognition can be improved.

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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