Identity registration method and device

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• receiving, by a terminal device, biometric feature information of a user that is to be verified in association with a service processing request;
• matching, by the terminal device, the received biometric feature information to be verified with a particular pre-stored biometric feature of the user, wherein the particular pre-stored biometric feature of the user is stored at the terminal device, and wherein the particular pre-stored biometric feature of the user is associated with a corresponding identifier;
• in response to matching the received biometric feature information to be verified to a particular pre-stored biometric feature of the user, searching a private key store for a private key associated with the identifier of the particular pre-stored biometric feature of the user;
• and
• in response to determining that no private key in the private key store is associated with the identifier of the particular pre-stored biometric feature of the user, registering a user identity of the user with a server at which the service processing request is to be sent, wherein registering the user identity of the user with the server at which the service processing request is to be sent comprises:
• generating a private key and a public key corresponding to the identifier of the particular pre-stored biometric feature of the user;
• storing a mapping relationship between the identifier and the generated private key in the terminal device;
• and
• transmitting a mapping relationship between the identifier and the generated public key to the server for storage;
• and
• sending, after the registering, the service processing request and the identifier of the particular pre-stored biometric feature of the user to the server, wherein the terminal device signs the service processing request with a digital signature using the generated private key associated with the identifier of the particular pre-stored biometric feature of the user, and wherein the server performs the service processing associated with the service processing request after verifying the digital signature of the terminal device using the generated public key corresponding to the identifier of the particular pre-stored biometric feature of the user.

A computer-implemented system, comprising:

• one or more computers;
• and
• one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
• receiving, by a terminal device, biometric feature information of a user that is to be verified in association with a service processing request;
• matching, by the terminal device, the received biometric feature information to be verified with a particular pre-stored biometric feature of the user, wherein the particular pre-stored biometric feature of the user is stored at the terminal device, and wherein the particular pre-stored biometric feature of the user is associated with a corresponding identifier;
• in response to matching the received biometric feature information to be verified to a particular pre-stored biometric feature of the user, searching a private key store for a private key associated with the identifier of the particular pre-stored biometric feature of the user;
• and
• in response to determining that no private key in the private key store is associated with the identifier of the particular pre-stored biometric feature of the user, registering a user identity of the user with a server at which the service processing request is to be sent wherein registering the user identity of the user with the server at which the service processing request is to be sent comprises:
• generating a private key and a public key corresponding to the identifier of the particular pre-stored biometric feature of the user;
• storing a mapping relationship between the identifier and the generated private key in the terminal device;
• and
• transmitting a mapping relationship between the identifier and the generated public key to the server for storage;
• and
• sending, after the registering, the service processing request and the identifier of the particular pre-stored biometric feature of the user to the server, wherein the terminal device signs the service processing request with a digital signature using the generated private key associated with the identifier of the particular pre-stored biometric feature of the user, and wherein the server performs the service processing associated with the service processing request after verifying the digital signature of the terminal device using the generated public key corresponding to the identifier of the particular pre-stored biometric feature of the user.