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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Even when calling the Apple Login Revoke API, the app still remains in the user's account.
Problem Situation User membership withdrawal request → revoke API call It always returns status code 200, but once out of 5~10, it remains an app linked to the user's Apple ID. Re-request user Apple login → Email is returned as null Currently, the only solution is for users to manually delete apps linked to their Apple ID. Email sent when re-requesting Apple login When the above problem occurs, even if the Revoke API is called multiple times, the app linked to the user's Apple ID is not deleted, and when requesting Refresh Token validation, it has already expired. Releated Issues https://forums.developer.apple.com/forums/thread/707181
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864
Nov ’24
Email is not included in id_token
We have a game that provides a mechanism to log into the game with Sign in with Apple in a direct integration between the game and Apple (first mechanism). We also provide a mechanism to log into the game using OpenID connect with authorization from Apple but using a server in the middle that drives the process (second mechanism). It is important to mention that both mechanisms use the same oauth client. We have been able to switch from the first mechanism to the second successfully, but there is a problem with id_token. In the second mechanism we request the scopes "email", "openid" and "name", but in the retrieved id_token there is no information about the email. It happens for all users who previously signed in with Apple using the first mechanism (therefore there is a current link between the game and the user in AppleId). It does not happen with users who had no link between the game and the user and use the second mechanism, in this case we can retrieve the user information in the callback of the first call and the email in the id_token, as stated in the documentation. However, if users who had a link between the game and the AppleId delete the app and then log back in using the second mechanism, then we can get the email information with the exact same request. The request we use to obtain the authorized endpoint information (https://appleid.apple.com/auth/authorize) has these parameters: response_mode: query scope: email openid profile nonce: ... state: ... response_type: code Then we get the authentication code and get an id_token like this: { "iss":"https://appleid.apple.com", "aud":"{aud}", "exp":1705584621, "iat":1705498221, "sub":"{sub}", "nonce":"7f-PqBoXgxeDMOEu5Ysov0FjE9GvSYfq", "at_hash":"3kLcPBlwZP6aj_mscww5zA", "authentication_time":1705498218, "nonce_supported":true } Is there a way to retrieve the email for users who had the link and don't want to delete it or log back into the app? In the official Apple documentation it is stated that the id_token should have the email but this is not the case. https://developer.apple.com/documentation/sign_in_with_apple/sign_in_with_apple_rest_api/authenticating_users_with_sign_in_with_apple#3383773
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1.5k
Nov ’24
Sign in with Apple invalid_client first time only
Hello, we implemented Apple Sign-In in our website long ago, and it worked well. Recently we have found a strange behaviour. The first time we make the request to the /auth/token endpoint we get an invalid_client error. Our client id is com.spicysparks.service.id If we make a request another time with exactly the same data it works fine. We noticed we get this error only when we try a newly generated client secret for the first time.
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878
Nov ’24
invalid_client Sign In With Apple
I'm trying to set up Sign In With Apple on my .NET 7 Web App (Not sure how many people here use this). I followed the guide by Scott Brady here: https://www.scottbrady91.com/openid-connect/implementing-sign-in-with-apple-in-aspnet-core It reaches Apple Sign In OK, authenticates, and passes back to my server, but the callback responds with this error. OpenIdConnectProtocolException: Message contains error: 'invalid_client', error_description: 'error_description is null', error_uri: 'error_uri is null'. Googling hasn't helped much, other than I saw a post saying to wait 48 hours, which I have now done (not that that makes sense anyway). Any idea whats been done wrong? Code below, replacing sensitive data. Startup.cs .AddOpenIdConnect("apple", async options => { options.Authority = "https://appleid.apple.com"; // disco doc: https://appleid.apple.com/.well-known/openid-configuration options.ClientId = "com.rackemapp.applelogin"; // Service ID options.CallbackPath = "/signin-apple"; // corresponding to your redirect URI options.ResponseType = "code id_token"; // hybrid flow due to lack of PKCE support options.ResponseMode = "form_post"; // form post due to prevent PII in the URL options.UsePkce = false; // apple does not currently support PKCE (April 2021) options.DisableTelemetry = true; options.Scope.Clear(); // apple does not support the profile scope options.Scope.Add("openid"); options.Scope.Add("email"); options.Scope.Add("name"); options.Events.OnAuthorizationCodeReceived = context => { context.TokenEndpointRequest.ClientSecret = AppleTokenGenerator.CreateNewToken(); return Task.CompletedTask; }; }); Apple Token Generator public static class AppleTokenGenerator { public static string CreateNewToken() { const string iss = "[MyTeamId]"; // your account's team ID found in the dev portal const string aud = "https://appleid.apple.com"; const string sub = "com.rackemapp.applelogin"; // same as client_id var now = DateTime.UtcNow; // contents of your .p8 file const string privateKey = "[MyKey]"; var ecdsa = ECDsa.Create(); ecdsa?.ImportPkcs8PrivateKey(Convert.FromBase64String(privateKey), out _); var handler = new JsonWebTokenHandler(); return handler.CreateToken(new SecurityTokenDescriptor { Issuer = iss, Audience = aud, Claims = new Dictionary<string, object> { { "sub", sub } }, Expires = now.AddMinutes(5), // expiry can be a maximum of 6 months - generate one per request or re-use until expiration IssuedAt = now, NotBefore = now, SigningCredentials = new SigningCredentials(new ECDsaSecurityKey(ecdsa), SecurityAlgorithms.EcdsaSha256) }); } } Also attached, images of my keys and setp in developer portal
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1.1k
Nov ’24
Email Delivery Issue via Private Relay Service
Hello community, In our application, we've implemented Apple ID for user authentication. Unfortunately, we forgot to register the associated domains and communication email addresses. This oversight has led to complications in email delivery via the private relay service. We've taken steps to fix the issue by reconfiguring the domains and communication email addresses. Post-adjustment, new user registrations are functioning properly. However, for users who registered before this fix, the problem persists. We followed the instructions provided on https://developer.apple.com/documentation/sign_in_with_apple/sign_in_with_apple_js/communicating_using_the_private_email_relay_service, and we also have SPF configured, which has passed validation in our administration. Has anyone encountered a similar issue, and if so, how did you resolve it? Any insights or guidance would be greatly appreciated.
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898
Nov ’24
apple login TypeError
hello. I am using the app with webview. When I log in to Apple, a typeerror appears. How can I solve this? TypeError: this.attr(...).serialize is not a function at u.get (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:691:77511) at t.getValueAndBind (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:145:1485) at e.Compute._on (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:3608) at e.Compute.<anonymous> (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:2378) at e.Compute._bindsetup (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:145:3277) at e.bindAndSetup [as bind] (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:131:200) at e.Compute.temporarilyBind (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:3888) at e.Compute.get (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:2827) at Object.u [as compute] (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:117:194) at u.___get (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:59:1930) TypeError: Cannot read properties of undefined (reading 'serialize') at u.inserted (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:691:116897) at HTMLElement.<anonymous> (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:187:673) at HTMLElement.dispatch (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:39204) at v.handle (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:37199) at Object.trigger (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:67752) at Object.trigger (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:224:258) at e.inserted (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:290:412) at t.each.e.fn.<computed> [as append] (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:224:2129) at O.fn.init.<anonymous> (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:46985) at W (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:28565)
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902
Nov ’24
appleid login TypeError
hello. I am using the app with webview. When I log in to Apple, a typeerror appears. How can I solve this? TypeError: this.attr(...).serialize is not a function at u.get (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:691:77511) at t.getValueAndBind (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:145:1485) at e.Compute._on (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:3608) at e.Compute.<anonymous> (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:2378) at e.Compute._bindsetup (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:145:3277) at e.bindAndSetup [as bind] (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:131:200) at e.Compute.temporarilyBind (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:3888) at e.Compute.get (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:311:2827) at Object.u [as compute] (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:117:194) at u.___get (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:59:1930) TypeError: Cannot read properties of undefined (reading 'serialize') at u.inserted (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:691:116897) at HTMLElement.<anonymous> (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:187:673) at HTMLElement.dispatch (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:39204) at v.handle (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:37199) at Object.trigger (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:67752) at Object.trigger (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:224:258) at e.inserted (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:290:412) at t.each.e.fn.<computed> [as append] (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:224:2129) at O.fn.init.<anonymous> (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:46985) at W (https://appleid.cdn-apple.com/appleauth/static/jsj/N1506946403/profile/app.js:248:28565)
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865
Nov ’24
The application "Finder" does not have permission to open "(null)“ error message in macOS 15.1 when trying to open unsigned application
We get a "The application "Finder" does not have permission to open "(null)“" error message in macOS 15.1 when trying to open unsigned applications. Is this a known bug in macOS 15.1 ? If so any indications of whether it will be fixed in the future. In macOS 15.0.1 the workaround for launching unsigned applications still worked.
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6.5k
Nov ’24
Storing Password in System keychain (File-Based Keychain) for MFA Authorization Plugin
Hi everyone, I’m currently developing an MFA authorization plugin for macOS and am looking to implement a passwordless feature. The goal is to store the user's password securely when they log into the system through the authorization plugin. However, I’m facing an issue with using the system's login keychain (Data Protection Keychain), as it runs in the user context, which isn’t suitable for my case. Therefore, I need to store the password in a file-based keychain instead. Does anyone have experience or code snippets for objective-c for securely storing passwords in a file-based keychain (outside of the login keychain) on macOS? Specifically, I'm looking for a solution that would work within the context of a system-level authorization plugin. Any advice or sample code would be greatly appreciated! Thanks in advance!
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552
Nov ’24
Shipping Contact
Hello, I'm having a problem with taxes calculation for US, the thing is, for some very specific addresses the taxes are coming wrong because we don't have the full address before the authorization with Adyen (our payment provider), for example, when I put the address "1 Infinite Loop, CA, US, 95014" in my wallet, I'm not receiving the value "1 Infinite Loop" (addressLines[0]) in backend until we authorize in Adyen, but I need this field to calculate the taxes and show to the customer before the authorization. My question is, is there any way to have this field before the authorization? If not, you have any idea how other ecommerces that use ApplePay and Adyen handle with this problem? Thanks in advance!
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303
Nov ’24
Crash in SecItemCopyMatching under C++
I'm extending a C++ library to gather some data from the keychain, I have a prototype code written in Swift that works just fine: import Security; import Foundation; let query: [String: Any] = [ kSecClass as String: kSecClassCertificate, kSecReturnData as String: true, kSecMatchLimit as String: kSecMatchLimitAll ] var items: CFTypeRef?; let status = SecItemCopyMatching(query as CFDictionary, &items); However trying to do the same in C++ crashes: #include <security/SecItem.h> int main() { static const void* keys[] = { kSecClass, kSecMatchLimit, kSecReturnData, }; static const void* values[] = { kSecClassCertificate, kSecMatchLimitOne, kCFBooleanTrue, }; static_assert(sizeof(keys) == sizeof(values), "Key-value lengths mismatch for query dictionary constructor!"); CFDictionaryRef query = CFDictionaryCreate(kCFAllocatorDefault, keys, values, sizeof(keys), nullptr, nullptr); SecItemCopyMatching(query, nullptr); return 0; } With the backtrace of: Thread 1 Queue : com.apple.main-thread (serial) #0 0x0000000191a7f1b8 in objc_retain () #1 0x0000000191ed9e0c in -[__NSDictionaryM __setObject:forKey:] () #2 0x0000000191f3ae28 in __CFDictionaryApplyFunction_block_invoke () #3 0x0000000191effbb0 in CFBasicHashApply () #4 0x0000000191ef2ccc in CFDictionaryApplyFunction () #5 0x0000000194cdafc4 in SecCFDictionaryCOWGetMutable () #6 0x0000000194cdf3e8 in SecItemCopyMatching_ios () #7 0x0000000194e79754 in SecItemCopyMatching () #8 0x0000000100003f68 in main at /Users/kkurek/whatever/whatever/main.cpp:15 #9 0x0000000191acf154 in start () I don't have much experience with MacOS so I'm not sure how to analyze this situation. I have tried running with sanitizers enabled but somehow the crash doesn't occur at all when running with them.
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491
Nov ’24
Intercepting incoming video and/or audio for stopping scams
I'm trying to make an app that is able to quietly run in the background. It needs to detect other apps' or the system's incoming video and/or audio, using only on-device resources to determine if it might be a scam caller. It will tap into an escalating cascade of resources to do so. For video/image scam detection, it uses OpenCV to detect faces, then refers to a known database of reported scam imagery. For audio scam calls, we defer to known techniques of voice modulation in frequency and/or amplitude. Each video and/or audio result will be relayed via notification banner as well as recorded in-app. Crucially, if the results are uncertain, users have the option to submit it to a global collaborative cloud database for investigative teams; 60 second audio snippets or series of images where faces were detected (60 second equivalent). In the end, we expect to deploy this app across most parts of Asia and Africa, thereby protecting generations of iPhone and iPad users. However, we have not been able to find a method that does this, and there is no known correspondance able to provide such technical guidance. Please assist.
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441
Nov ’24
Unity Analytics for Kids category
Has anyone launched a game for kids using Unity Analytics? I am not understanding if Unity Analytics is considered a "third party". And has anyone successfully shipped a game for kids with Unity Analytics? And if not, has anyone solved the issue Apple rejecting submission?
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200
Nov ’24
Collecting device model which box do we check in App Privacy?
If we record the user's Device Model (ie. iPhone 15), what checkbox do we need to select under Data Collection in App Privacy? Device model is not a unique identifier, we do not use it for tracking. We use it to know in aggregate which phone models are using our app the most so we can prioritize our QA to focus on the top devices. Please note: we DO NOT access Device ID, as we DO NOT use it.
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288
Nov ’24
Statistical Data Collection in an SMS Filter Extension.
I am currently developing an SMS filter extension and would like to clarify certain aspects of App Store policies and Apple's privacy guidelines regarding data collection. In my extension, SMS messages are filtered using the deferQueryRequestToNetwork method to perform server-based filtering. While I understand and respect Apple’s prohibition on transmitting or storing sensitive data such as message content or sender information, I am considering collecting non-personally identifiable statistical data related to the filtering process, such as: The total number of messages filtered via the extension. Hourly statistics of filtered messages. Category-based statistics (e.g., promotion, phishing, transaction). This statistical data would be: Fully anonymized, ensuring no personally identifiable information (PII) is collected or stored. Used exclusively for providing users with aggregated insights, such as daily or weekly filtering statistics, and improving the filtering process. Given that the filtering occurs via the deferQueryRequestToNetwork mechanism, the data collection would involve the server but would remain strictly limited to anonymized statistics. Furthermore: Users would be fully informed about this data collection via a transparent privacy policy and in-app notification. Explicit user consent would be obtained before collecting or transmitting any data. Data transmission would be secured, and no raw message content or sender details would ever be stored or transmitted. Could you confirm if this practice complies with Apple’s policies? Are there any additional requirements or recommendations for handling anonymized statistical data collected via server-based filtering in an SMS filter extension?
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416
Nov ’24
Declare user data tracking if it's disabled completely in third-party SDK
I have an app where I'm integrating the Branch.io SDK for deeplinks. I plan to use it just for deeplinks and that's it. The SDK provides it's own privacy manifest file with privacy tracking domains defined and some collected data types with "Used for Tracking" set to YES. Does anyone know if I can keep tracking disabled in the App Store Connect - App Privacy section in case if I'll configure the SDK to disable tracking completely without asking users with the ATT permission request?
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466
Nov ’24
Swift AES CBC 256 Encryption With Static 32bit Key and 32bit IV
We have the below Implementation in Android and the same has to be integrated into Swift. Key :- "d95acd54b4a821ff32c52825q931c194" IV :- "687b9509c25a34b8ad076346s8353d67" Here Both the Key and IV are 32 bits and below is the android code. public class AESEncryption { private static final String key = "d95acd54c6a821ff32c52825b931c194"; private static final String initVector = "687b9509c25a14b8ad076346d8353d67"; static byte[] bte = hexToBytes(initVector); public static String encrypt(String strToEncrypt) { try { CommonCode.showLog("log", bte.toString()); IvParameterSpec iv = new IvParameterSpec(bte); SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING"); CommonCode.showLog("IV after logs", iv.toString()); cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); byte[] encrypted = cipher.doFinal(strToEncrypt.getBytes()); if (Build.VERSION.SDK_INT &gt;= Build.VERSION_CODES.O) { return Base64.getEncoder().encodeToString(encrypted).trim(); } else { return android.util.Base64.encodeToString(encrypted, android.util.Base64.DEFAULT).trim(); } } catch (Exception e) { CommonCode.showLog("Error while encrypting: ", e.toString()); } return null; } public static String decrypt(String strToDecrypt) { try { IvParameterSpec iv = new IvParameterSpec(bte); SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING"); cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); if (android.os.Build.VERSION.SDK_INT &gt;= android.os.Build.VERSION_CODES.O) { return new String(cipher.doFinal(Base64.getDecoder().decode(strToDecrypt))); } else { return new String(cipher.doFinal(android.util.Base64.decode(strToDecrypt, android.util.Base64.DEFAULT))); } } catch (Exception e) { CommonCode.showLog("Error while decrypting: " , e.toString()); } return null; } } How can we mimic the above in Swift? Here in Android they are using static byte[] bte = hexToBytes(initVector); to convert the 32bit IV into 16 bit Bytes Array I Have Tried the same approach on Swift below are the code snippet [Contents.swift](https://developer.apple.com/forums/content/attachment/60fab4f2-1496-4003-9f37-c195de95e94a)
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10k
Dec ’24
Can't send email to Apple Private Relay
I am trying to send email from our internal server. We are using gmail as smtp client. Gmail is bound to a domain hosted on squarespace. I have all the required DNS records - DKIM, DMARC, SPF configured in squarespace. In the Apple Developer Portal, I have also added allowed domains and email addresses in the Sign In with Apple settings. SPF verification passed. The problem is that emails sent to @privaterelay.appleid.com are not reaching the final recipient. On our end, the emails are sent and there are no errors. In the email signature the DKIM domain and the domain in the From: address match completely. Domain on tools like mxtoolbox passes all checks. Also, there is no response from the gmail server that the email was not delivered. To all other emails the emails are being sent with no problems. Please help me figure this out, maybe I am missing something.
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911
Dec ’24
Password autofill not working on iPhone simulator
When tapping on "password" in the accessory view above the keyboard, no password manger is opened. The keyboard just closes and re-opens. I have made sure a password exists and is available to be used. I have replicated this within my own app, but also from within the Settings app on the simulator (see attached gif) so I am confident it is not a coding issue on my side. I have replicated it on both iOS 17 and iOS 18 I am using Xcode Version 16.0 (16A242d) I am running macOS Sonoma Version 14.7 (23H124) I am fairly confident I have not experienced this when working on another clients app. I was using Xcode 15 for that so not sure if this is something introduced with Xcode 16.
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717
Dec ’24
What information does FIDO2 url contain and how can we decode it in Swift?
0 In WWDC 2022 Apple launched GA of Passkeys which will enable FIDO2 authentication in iOS ecosystem, the next gen open standards based authentication mechanism to replace passwords. On a Relying Party (RP) server supporting FIDO2 when a user registration is initiated, the browser generates a QR code to register a phone as platform authenticator. I am trying to build an app which opens up a QR scanner view and I want to register for the FIDO credential from the app by scanning the QR code generated by the browser. The parsed string is of the format - FIDO:/090409094349049349....... What information does this FIDO:/090409094349049349....... url protocol contain relating to the RP? Also, is there a way to decode this in Swift to get that information in json or string format? Since the camera app on iPhone is able to scan the QR and generate information like RP domain name and user being registered, I believe there should be a way to do this from a QR scanner inside an app as well. Or are these APIs private in nature only for usage of Camera app?
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1.9k
Dec ’24