Prioritize user privacy and data security in your app. Discuss best practices for data handling, user consent, and security measures to protect user information.

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ASCredentialProvider/ProvidesTextToInsert macOS support
Hi, ASCredentialProvider had been almost identically implemented on both iOS and macOS so far, but the ProvidesTextToInsert feature was only added to iOS. It would have been a crucial point to make Credential Providers available in all textfields, without users having to rely on developers correctly setting roles for their Text Fields. It's right now impossible to paste credentials into Notes, or some other non-password text box both in web and desktop apps for example, in a seamless, OS-supported way without abusing Accessibility APIs which are understandably disallowed in Mac App Store apps. Or just pasting an SSH key, or anything. On macOS this has so many possibilities. It could even have a terminal command. It's even more interesting that "Passwords..." is an option in macOS's AutoFill context menu, just like on iOS, however Credential Providers did not gain this feature on macOS, only on iOS. Is this an upcoming feature, or should we find alternatives? Or should I file a feature request? If it's already in the works, it's pointless to file it.
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487
Apr ’25
How to Restrict Passkey Authentication to FaceID or TouchID Only
Hi everyone, I'm looking for a way to configure Passkey on iOS so that authentication is only possible using FaceID or TouchID. Specifically, I want to disable the use of passcodes and QR codes for authentication. Additionally, is there a method to detect if the authentication was done using a passcode or QR code? Thanks for your help!
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568
Apr ’25
WebView-Based Authentication in macOS Authorization Plugin
I am developing an Authorization plugin for macOS that should be invoked when a user unlocks their device from the lock screen. Based on advice from the other threads in these forums, I have understood that: The plugin needs to use SFAuthorizationPluginView The auth db entries to modify are system.login.screensaver and authenticate I found the NameAndPassword sample and after making some tweaks to it was able to get it to work from screensaver unlock. I am trying to add Webview-based authentication to the plugin, but have not had any success. The plugin window's width does not change (though the height does) and only a small portion of the HTML gets rendered. Is Webview-based authentication supported with SFAuthorizationPluginView? Are there any alternatives?
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250
Mar ’25
Submission Rejected: Guideline 5.1.1 - Legal - Privacy - Data Collection and Storage
Hello Experts, I am in need of your help with this feedback from the App Reviewer. Issue Description: One or more purpose strings in the app do not sufficiently explain the use of protected resources. Purpose strings must clearly and completely describe the app's use of data and, in most cases, provide an example of how the data will be used. Next Steps: Update the location purpose string to explain how the app will use the requested information and provide a specific example of how the data will be used. See the attached screenshot. Resources: Purpose strings must clearly describe how an app uses the ability, data, or resource. The following are hypothetical examples of unclear purpose strings that would not pass review: "App would like to access your Contacts" "App needs microphone access" Feedback #2 "Regarding 5.1.1, we understand why your app needs access to location. However, the permission request alert does not sufficiently explain this to your users before accessing the location. To resolve this issue, it would be appropriate to revise the location permission request, specify why your app needs access, and provide an example of how your app will use the user's data. To learn more about purpose string requirements, watch a video from App Review with tips for writing clear purpose strings. We look forward to reviewing your app once the appropriate changes have been made." May I know how can I update my purpose string? I appealed on the first feedback by explaining what is the purpose of it but got the Feedback #2. TYIA!!
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256
Jun ’25
Validating Signature Of XPC Process
Quinn, you've often suggested that to validate the other side of an XPC connection, we should use the audit token. But that's not available from the XPC object, whereas the PID is. So everyone uses the PID. While looking for something completely unrelated, I found this in the SecCode.h file OSStatus SecCodeCreateWithXPCMessage(xpc_object_t message, SecCSFlags flags, SecCodeRef * __nonnull CF_RETURNS_RETAINED target); Would this be the preferred way to do this now? At least from 11.0 and up. Like I said, I was looking for something completely unrelated and found this and don't have the cycles right now to try it. But it looks promising from the description and I wanted to check in with you about it in case you can say yes or no before I get a chance to test it. Thanks
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8.2k
Aug ’25
ASWebAuthenticationSession + https iOS <17.4
Hi everyone, I am trying to use ASWebAuthenticationSession to authorize user using OAuth2. Service Webcredentials is set. /.well-known/apple-app-site-association file is set. When using API for iOS > 17.4 using new init with callback: .https(...) everything works as expected, however i cannot make .init(url: ,callbackURLScheme: ....) to work. How can i intercept callback using iOS <17.4? Do I really need to use universal links? callbackURL = https://mydomain.com/auth/callback
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488
Apr ’25
SFAuthorizationPluginView and MacOS Tahoe
Testing my security agent plugin on Tahoe and find that when unlocking the screen, I now get an extra window that pops up over the SFAuthorizationPluginView that says "macOS You must enter a password to unlock the screen" with a Cancel (enabled) and OK button (disabled). See the attached photo. This is new with Tahoe. When unlocking the screen, I see the standard username and password entry view and I enter my password and click OK. That is when this new view appears. I can only click cancel so there is no way to complete authenticating.
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Sep ’25
Request for manual on interpreting Security Authorization Plugin authentication failure codes
Using the SDK, I've printed out some log messages when I enter the wrong password: 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] invoke 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] general: 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] progname: 'SecurityAgentHelper-arm64' 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] OS version: 'Version 15.5 (Build 24F74)' 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] pid: '818' 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] ppid: '1' 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] euid: '92' 2025-08-20 15:58:14.086 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] uid: '92' 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] session: 0x186e9 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] attributes: 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] is root: f 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] has graphics: t 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] has TTY: t 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] is remote: f 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] auth session: 0x0 2025-08-20 15:58:14.087 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] context: 2025-08-20 15:58:14.088 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] authentication-failure: --S -14090 2025-08-20 15:58:14.088 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] pam_result: X-S 9 2025-08-20 15:58:14.089 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] hints: 2025-08-20 15:58:14.089 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] authorize-right: "system.login.console" 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] client-path: "/System/Library/CoreServices/loginwindow.app" 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] client-pid: 807 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] client-type: 'LDNB' 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] client-uid: 0 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] creator-audit-token: 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 ................ 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] 00 00 00 00 27 03 00 00 e9 86 01 00 68 08 00 00 ....'.......h... 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] creator-pid: 807 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] flags: 259 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] reason: 0 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] tries: 1 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] immutable hints: 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] client-apple-signed: true 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] client-firstparty-signed: true 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] creator-apple-signed: true 2025-08-20 15:58:14.090 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] creator-firstparty-signed: true 2025-08-20 15:58:14.091 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] arguments: 2025-08-20 15:58:14.091 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] none 2025-08-20 15:58:14.108 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] LAContext: LAContext[4:8:112] 2025-08-20 15:58:14.119 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] token identities: 0 2025-08-20 15:58:14.120 Db SecurityAgentHelper-arm64[818:1efd] [com.example.apple-samplecode.LoggingAuthPlugin:mechanism] token watcher: <TKTokenWatcher: 0x11410ee70> Specifically, is there a manual/link somewhere that can allow me to interpret: authentication-failure: --S -14090 and pam_result: X-S 9
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325
Aug ’25
Custom Authorization Plugin in Login Flow
What Has Been Implemented Replaced the default loginwindow:login with a custom authorization plugin. The plugin: Performs primary OTP authentication. Displays a custom password prompt. Validates the password using Open Directory (OD) APIs. Next Scenario was handling password change Password change is simulated via: sudo pwpolicy -u robo -setpolicy "newPasswordRequired=1" On next login: Plugin retrieves the old password. OD API returns kODErrorCredentialsPasswordChangeRequired. Triggers a custom change password window to collect and set new password. Issue Observed : After changing password: The user’s login keychain resets. Custom entries under the login keychain are removed. We have tried few solutions Using API, SecKeychainChangePassword(...) Using CLI, security set-keychain-password -o oldpwd -p newpwd ~/Library/Keychains/login.keychain-db These approaches appear to successfully change the keychain password, but: On launching Keychain Access, two password prompts appear, after authentication, Keychain Access window doesn't appear (no app visibility). Question: Is there a reliable way (API or CLI) to reset or update the user’s login keychain password from within the custom authorization plugin, so: The keychain is not reset or lost. Keychain Access works normally post-login. The password update experience is seamless. Thank you for your help and I appreciate your time and consideration
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297
Jun ’25
SSL Pinning in iOS Without Bundled Certificates
Hello, We recently implemented SSL pinning in our iOS app (Objective-C) using the common approach of embedding the server certificate (.cer) in the app bundle and comparing it in URLSession:didReceiveChallenge:. This worked fine initially, but when our backend team updated the server certificate (same domain, new cert from CA), the app immediately started failing because the bundled certificate no longer matched. We’d like to avoid shipping and updating our app every time the server’s certificate changes. Instead, we are looking for the Apple-recommended / correct approach to implement SSL pinning without embedding the actual certificate file in the app bundle. Specifically: . Is there a supported way to implement pinning based on the public key hash or SPKI hash (like sha256/... pins) rather than the full certificate? . How can this be safely implemented using NSURLSession / SecTrustEvaluate (iOS 15+ APIs, considering that SecTrustGetCertificateAtIndex is deprecated)? . Are there Apple-endorsed best practices for handling certificate rotation while still maintaining strong pinning? Any guidance or code samples would be greatly appreciated. We want to make sure we are following best practices and not relying on brittle implementations. Thanks in advance!
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480
Aug ’25
ASWebAuthenticationSession password autofill iOS 18.5 broken
I have been implementing an sdk for authenticating a user. I have noticed that on iOS 18.5, whether using SFSafariViewController, or the sdk (built on ASWebAuthenticationSession), password autofill does not work. I have confirmed it works on a different device running iOS 18.0.1. Are there any work arounds for this at this time? Specifically for ASWebAuthenticationSession?
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253
Jul ’25
How to Localize Biometric Prompt for SecKeyCreateSignature with Secure Enclave
I'm using Secure Enclave to generate and use a private key like this: let access = SecAccessControlCreateWithFlags(nil, kSecAttrAccessibleWhenUnlockedThisDeviceOnly, [.privateKeyUsage, .biometryAny], nil) let attributes: [String: Any] = [ kSecAttrKeyType as String: kSecAttrKeyTypeECSECPrimeRandom, kSecAttrKeySizeInBits as String: 256, kSecAttrTokenID as String: kSecAttrTokenIDSecureEnclave, kSecAttrAccessControl as String: access as Any, kSecAttrApplicationTag as String: "com.example.key".data(using: .utf8)!, kSecReturnRef as String: true ] let privateKey = SecKeyCreateRandomKey(attributes as CFDictionary, nil) Later, I use this key to sign a message: let signature = SecKeyCreateSignature(privateKey, .ecdsaSignatureMessageX962SHA256, dataToSign as CFData, nil) This prompts for biometric authentication, but shows the default system text. How can I customize or localize the biometric prompt (e.g., title, description, button text) shown during SecKeyCreateSignature? Thanks!
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111
Apr ’25
Multiple views in SFAuthorizationPluginView
Hi there, I'm trying to use SFAuthorizationPluginView in order to show some fields in the login screen, have the user click the arrow, then continue to show more fields as a second step of authentication. How can I accomplish this? Register multiple SecurityAgentPlugins each with their own mechanism and nib? Some how get MacOS to call my SFAuthorizationPluginView::view() and return a new view? Manually remove text boxes and put in new ones when button is pressed I don't believe 1 works, for the second mechanism ended up calling the first mechanism's view's view() Cheers, -Ken
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232
May ’25
Permission requirements for LAContext's canEvaluatePolicy
Hi, I am developing an app that checks if biometric authentication capabilities (Face ID and Touch ID) are available on a device. I have a few questions: Do I need to include a privacy string in my app to use the LAContext's canEvaluatePolicy function? This function checks if biometric authentication is available on the device, but does not actually trigger the authentication. From my testing, it seems like a privacy declaration is only required when using LAContext's evaluatePolicy function, which would trigger the biometric authentication. Can you confirm if this is the expected behavior across all iOS versions and iPhone models? When exactly does the biometric authentication permission pop-up appear for users - is it when calling canEvaluatePolicy or evaluatePolicy? I want to ensure my users have a seamless experience. Please let me know if you have any insights on these questions. I want to make sure I'm handling the biometric authentication functionality correctly in my app. Thank you!
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162
Jun ’25
Issue with record.changePassword Clearing Keychain Information Hello,
I am developing a sample authorization plugin to sync the user’s local password to the network password. During the process, I prompt the user to enter both their old and new passwords in custom plugin. After the user enters the information, I use the following code to sync the passwords: try record.changePassword(oldPssword, toPassword: newPassword) However, I have noticed that this is clearing all saved keychain information, such as web passwords and certificates. Is it expected behavior for record.changePassword to clear previously stored keychain data? If so, how can I overcome this issue and ensure the keychain information is preserved while syncing the password? Thank you for your help!
1
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162
Mar ’25
iOS 18.3.1 - App shows multiple Face ID checks issue when launched
Our app uses Face ID to optionally secure access to the app for device owner. This not the new 'Require Face ID' feature of iOS 18 - this is our own custom implementation that has some other related logic for authentication handling. Starting in iOS 18.3.1, starting the app results in multiple Face Id checks being fired - sometimes just a couple but sometimes many more. Curiously, this is happening even when I completely disable any code we have that prompts for Face ID. It appears to come from nowhere. This does not happen on prior iOS 18 releases so, while I might be doing something improper in the code, something specific has changed in iOS 18.3.1 to cause this issue to manifest. I'm looking for advice as to what could be occurring here, how to debug a Face Id check that appears to come from nowhere, and what, if any, workarounds exist.
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969
Mar ’25
Proper Approach to Programmatically Determine SIP State
Hello, I have encountered several challenges related to System Integrity Protection (SIP) state detection and code signing requirements. I would like to seek clarification and guidance on the proper approach to programmatically determine the SIP state. Here are the issues I’ve encountered: XPC Code Signing Check APIs: APIs like setCodeSigningRequirement and setConnectionCodeSigningRequirement do not work when SIP disabled and that's ok given what SIP is. LaunchCodeRequirement API: When using Process.launchRequirement, the LaunchCodeRequirement API does not function anymore when SIP disabled. The IsSIPProtected requirement behaves in a way that is not clearly documented -- it appears to only apply to pre-installed Apple apps. Legacy APIs: Older APIs like SecCodeCheckValidity are likely to be non-functional, though I haven’t had the chance to validate this yet. Private API Concerns: So to mitigate those limitations I prefer my app to not even try to connect to untrusted XPC or launch untrusted Processes when SIP is disabled. The only way to determine SIP state I could find is a low-level C function csr_get_active_config. However, this function is not declared in any publicly available header file, indicating that it is a private API. Since private APIs cannot be used in App Store-distributed apps and are best avoided for Developer ID-signed apps, this does not seem like a viable solution. Given these limitations, what is the recommended and proper approach to programmatically determine the SIP state in a macOS application? Any insights or guidance would be greatly appreciated. Thank you!
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218
May ’25