Preface ： Access the face core APP when , It needs to involve the development of multiple back-end interfaces , but The official website document of the human face core There is no complete code example , This article provides an example based on Python A complete example of the server of .

One 、 Overall access process

1、 Interfaces and documents involved

Backend involves 5 Interface ;App It's relatively simple , Use the order number obtained from the back end 、 Signature and other information call SDK that will do .

Server side

Serial number

Content

remarks

1

Time acquisition Access Token

Interface document

2

according to Access Token obtain sign ticket

Interface document

3

The partner sends the identity information to the background ： Based on user information and sign ticket Generated signature , obtain faceId（ Unique identification of the user who brushes the face ） Wait to start SDK Parameters of

Interface document

4

according to Access Token obtain nonce ticket, Generate sign

Interface document

5

Provide a web Service supply APP The client obtains the above 3、4 The call generated in step SDK Parameters of

6

Server verification results

Interface document

APP End

Serial number

Content

remarks

1

launch http Request to obtain the signature and other parameters generated by the server

2

Start the kernel using the request parameters obtained by the server SDK

Interface document

App For example, please refer to this article ： Face nucleus APP Access -Android Server-side implementation

Explanation of confusing terms ：

Access Token：

     The period of validity 2 Hours , Suggest every 20 Minutes to request new , The coexistence of the old and the new 1 minute .

     Use scenarios ： obtain sign ticket.

sign ticket：

    The period of validity 60 minute , Recommendations and Access Token Bind refresh .

    Use scenarios ： The partner sends the identity information to the background .

nonce ticket：

     The period of validity 120 second , One time .

     Use scenarios ： start-up SDK face scan .

2、 Refer to the access flow chart

Two 、 Example demo

1、 Example demo Project package

2、demo Usage method

Refer to the compressed package README file

Dependency Library ：

Flask、requests

Usage mode ：

1、 stay config.py Fill in the wbappid、secret

Console address ：https://console.cloud.tencent.com/faceid/access

2、 Background operation flush_access_token.py

Refresh regularly access_token and sign_ticket.

（ Recommended order ：nohup python -u flush_access_token.py > flush_access_token.log 2>&1 &）

3、 function web_server.py start-up 2 individual web service ：

http://xxx/get_face_params for APP The client gets the order signature and so on SDK Parameters of

http://xxx/get_result Used to obtain validation results

（ Recommended order ：nohup python -u web_server.py > web_server.log 2>&1 &）

web Detailed description of the service ：

function web_server.py after , Console or log The file will print web Service address

Client request protocol ： The request method is POST, Request header Content-Type Need to be ‘application/x-www-form-urlencoded’

http://xxx/get_face_params Example of service input ：{'name': ' Xiao Ming ', 'id_no': '4311120022232323'}

http://xxx/get_result Example of service input ：{'order_no': 'xxxx'}