Apple account password auto fill

One 、 solve the problem

in order to app Login process user experience problems , Record and automatically fill in the password of the user's login account , Fast... For users 、 A convenient way to log in , Let the user select an account to fill in the account password

Two 、 Overview of new technologies

This feature has been available for a long time , stay WWDC17 On , Apple released iOS11, Which brings App The password is automatically filled in this new API. The implementation of this function can make it more convenient for users to manage passwords , It's easier to login on our app .

Automatic password filling simplifies iOS Application and web page login and account creation tasks . Just a few clicks , Your users can create and save new passwords or log in to existing accounts . Users don't even need to know their passwords ; The system handles everything . This convenience increases the likelihood that users will complete the application login or registration process and start using your application faster . Besides , By encouraging users to choose a unique strong password , You can improve the security of your application . By default , Automatic password filling saves the user's login credentials in their current iOS On the device . iOS have access to iCloud Keychain Securely synchronize these credentials on the user's device . Password auto fill only recommends credentials for the application's associated domain , And the user must use... Before accessing these credentials Face ID or Touch ID Authentication . Password autopopulation also provides credentials for third-party password managers that implement the credential provider extension .

WWDC17 Related video address ：Introducing Password AutoFill for Apps

3、 ... and 、 Benefits

Use the technology , Will remember the user's account and password , Allows users to create and save new passwords or log in to existing accounts , Solve the login problem caused by the user who cannot remember the password or enters the wrong password , Greatly improve users' use of app Convenience and fluency .

Four 、 risk assessment

The technology was officially launched by apple , And explain it at the Developer Conference , The technology is mature enough , And there are many in the market APP Or the website has implemented this function , There is no risk at present .

5、 ... and 、 Detailed instructions

1、 Project configuration

Open... In the project Associated Domains, Or directly at https://developer.apple.com/ Log in to your developer account , Then enter Certificates, Identifiers & Profiles, Choose your Identifiers, Click edit , Check Associated Domains

Click the Add button to directly add a webcredentials:example.com, The official format is ： <service>:<fully qualified domain>:<port number> . And in the picture webcredentials It is a service for web pages and applications to share certificates , As follows ：

applinks:  Universal link service 
webcredentials： Web pages and applications share certificate credential Services 
activitycontinuation：HandOff service 

If the website needs to adapt example.com Subdomain name of , Then for .example.com , And ensure that every addition should have **webcredentials: ** Head .

2、 Server configuration

Create a file called apple-app-site-association Of json file ( Don't add json suffix ), Then fill in the following information ：

• TeamId by , The developer account of the project TeamId, You can check it on the developer account
• BundleId by , The project Bundle identifier, View on the project

{"webcredentials":{  
        "apps": ["$TeamId.$Bundle id" ]}
}

And then put this json Put the file in the root directory of the server domain name , perhaps .well-known Below directory , As long as access is available
Then the server personnel give us the domain name we visit , We put its domain name , Add to the above Associated Domains in , The format is
webcredentials:$ domain name , such as webcredentials:api.yolanda.hk
app Set screenshot

3、 Code settings

Will login the registered account and password UITextfield Of textContentType Set to username perhaps emailAddress、password
And then run the project , See the effect
1、 function app, Enter account number and password , Click login , After logging in , Whether to save the password will pop up

2、 After clicking save , Log out , On the login page , Click on the account and password input boxes , The saved account and password will pop up on the keyboard , After clicking , Carry out facial appearance Id Or after fingerprint recognition , Automatically fill in the account and password

3、 After changing the password , Update the password reminder of the original account
Manually set the account and password saving code

NSString *server = @"oversea-sit.yolanda.hk";
NormalUser *loginUser = [[UserTool sharedUserTool] getLoginUser];
SecAddSharedWebCredential( (**__bridge** CFStringRef)server, (**__bridge** CFStringRef)loginUser.email, (**__bridge** CFStringRef)_newPwdTextField.textField.text, ^(CFErrorRef  **_Nullable** error) {
});

Then the system will pop up a pop-up box to confirm whether to update the password saved by the original account , Click update password , After logging out , The filled password is the modified password