I'm developing an iOS app that utilizes Universal Links and ASWebAuthenticationSession to deep-link from a website to the app itself. This implementation adheres to the recommendations outlined in RFC 8252, ensuring that the app opening the ASWebAuthenticationSession is the same app that is launched via the Universal Link. Problem: 　While most users can successfully launch the app via Universal Links,a few percent of users experience instances where the app fails to launch, and the user is redirected to the browser. What I've Tried: 　ASWebAuthenticationSession Configuration: I've double-checked the configuration of callbackURLScheme and presentationContextProvider. 　Universal Links: Verified the apple-app-site-association file and associated domains entitlement. 　Network Conditions: Tested on various network environments (Wi-Fi, cellular) and devices. Questions: 　What are the potential causes for this behavior? 　Has anyone else encountered a similar issue and found a solution? 　Are there any debugging techniques or ways to generate more detailed logs? I haven't been able to determine which device or OS version is causing this problem. Thank you.

We are using SecItemCopyMatching from LocalAuthentication to access the private key to sign a challenge in our native iOS app twice in a few seconds from user interactions. This was working as expected up until about a week ago where we started getting reports of it hanging on the biometrics screen (see screenshot below). From our investigation we've found the following: It impacts newer iPhones using iOS 26.1 and later. We have replicated on these devices: iPhone 17 Pro max iPhone 16 Pro iPhone 15 Pro max iPhone 15 Only reproducible if the app tries to access the private key twice in quick succession after granting access to face ID. Looks like a race condition between the biometrics permission prompt and Keychain private key access We were able to make it work by waiting 10 seconds between private key actions, but this is terrible UX. We tried adding adding retries over the span of 10 seconds which fixed it on some devices, but not all. We checked the release notes for iOS 26.1, but there is nothing related to this. Screenshot:

Hi, we were recently approved for the com.apple.developer.web-browser.public-key-credential entitlement and have added it to our app. It initially worked as expected for a couple of days, but then it stopped working. We're now seeing the same error as before adding the entitlement: Told not to present authorization sheet: Error Domain=com.apple.AuthenticationServicesCore.AuthorizationError Code=1 "(null)" ASAuthorizationController credential request failed with error: Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1004 "(null)" Do you have any insights into what might be causing this issue? Thank you!

I have a binary executable which needs to be given Accessibility Permissions so it can inject keypresses and mouse moves. This was always possible up to macOS 15 - when the first keypress arrived the Accessibility Permissions window would open and allow me to add the executable. However this no longer works in macOS 26: the window still opens, I navigate to the executable file and select it but it doesn't appear in the list. No error message appears. I'm guessing that this may be due to some tightening of security in Tahoe but I need to figure out what to change with my executable to allow it to work.

FB18383742 Setup 🛠️ Xcode 16.4 (16F6) 📱 iPhone 13 mini (iOS 18.0.1) ⌚️ Apple Watch Series 10 (watchOS 11.3.1) Observations As AccessorySetupKit does not request "Core Bluetooth permissions", when a watchOS companion app is installed after having installed the iOS app, the toggle in the watch settings for Privacy & Security > Bluetooth is turned off and disabled After removing the iPhone associated with the Apple Watch, Bluetooth works as expected in the watchOS app Upon reinstalling the iOS app, there's a toggle for Bluetooth in the iOS ASK app's settings and the ASK picker cannot be presented 🤨 From ASK Documentation: AccessorySetupKit is available for iOS and iPadOS. The accessory’s Bluetooth permission doesn’t sync to a companion watchOS app. But this doesn't address not being able to use Core Bluetooth in a watch companion app at all 🥲 Reproducing the bug Install the iOS + watchOS apps Launch iOS app, tap "start scan", observe devices can be discovered (project is set up to find heart rate monitors) Launch watchOS, tap allow on Bluetooth permission pop-up watchOS app crashes 💥 Meanwhile, in the iOS app, there should be a log entry for 💗 CBCentralManager state: poweredOff and the ASK picker is no longer able to discover any devices The state of the device permissions: iOS app has no paired accessories or Bluetooth permission watchOS app's Bluetooth permission shown as turned off & disabled Remove the iOS app Relaunch the watchOS app Notice the CBCentralManager state is unauthorized Remove and reinstall the watchOS app Tap allow on Bluetooth permission pop-up watchOS app does not crash and CBCentralManager state is poweredOn The state of the watch permissions: Bluetooth is turned on & the toggle is not disabled Note that at this time the iOS app is not installed, there is no way to remove Bluetooth permission for the watch app. Reinstall + launch the iOS app Notice a warning in the log: [##### WARNING #####] App has companion watch app that maybe affected if using CoreBluetooth framework. Please read developer documentation for AccessorySetupKit. Notice a log entry for 💗 CBCentralManager state: poweredOn before tapping start scan Tap start scan and observe another log entry: Failed to show picker due to: The operation couldn’t be completed. (ASErrorDomain error 550.) ASErrorDomain 550: The picker can't be used because the app is in the background. Is this the expected error? 🤔 The state of the iOS permissions: The app's settings show a Bluetooth toggle normally associated with Core Bluetooth, but the app never showed a Core Bluetooth pop-up The iOS ASK app now has Core Bluetooth permission 😵‍💫 Following up with Apple This is a known bug that should be fixed in watchOS 26 when Bluetooth permissions for watch apps can be set independently of the iOS app. I've yet to test it with watchOS 26. See repo for the same post with screenshots of the settings and demo code reproducing the bug: https://github.com/superturboryan/AccessorySetupKit-CoreBluetooth-watchOS-Demo

Why can’t sandboxed mac app store apps have full disk access available in the system settings for full disk access? I discovered mac app store apps in release mode cannot access the ai auggie command line program and other command line programs like opengrep on your system. Debug builds fine. I came up with a workaround: Since I have an ssh client built in for connecting to remote servers, why not connect to ssh on the same local machine… Ask the user for their username and password in a popup. To do this, you have to enable remote login on your mac in system settings -> sharing. In addition you must grant full disk access to cli ssh in system settings: add /usr/libexec/sshd-keygen-wrapper It all works, but I don’t see the cli program in mac settings. To remove the cli program you must run a command line program to remove all full disk access support from all apps. No way to just undo ssh. So my question is, even though I got CodeFrog all working for a mac app store release, should I not do it because it’s insecure or too complicated with the system settings? Should I instead sell the app off the store like Panic Nova? Need some advice. I have not implemented in app purchases yet. Should I just have a reality check and sell the app off the store, or try for app store approval? Bummer… Maybe I’m ahead of my time, but perhaps Apple could review the source code for apps requesting full disk access and make sure there’s nothing fraudulent in them. Then, developer tools app store apps could be in the store with the user’s assurance that nothing is happening behind the scenes that is scary. From: https://blog.greenrobot.com/2025/11/10/i-have-a-decision-to-make/ Related post: https://developer.apple.com/forums/thread/806187 I submitted a code level tech support question for this. They directed me here.

We are interested in using a hardware-bound key in a launch daemon. In a previous post, Quinn explicitly told me this is not possible to use an SE keypair outside of the system context and my reading of the Apple documentation also supports that. That said, we have gotten the following key-creation and persistence flow to work, so we have some questions as to how this fits in with the above. (1) In a launch daemon (running thus as root), we do: let key = SecureEnclave.P256.Signing.PrivateKey() (2) We then use key.dataRepresentation to store a reference to the key in the system keychain as a kSecClassGenericPassword. (3) When we want to use the key, we fetch the data representation from system keychain and we "rehydrate" the key using: SecureEnclave.P256.Signing.PrivateKey(dataRepresentation: data) (4) We then use the output of the above to sign whatever we want. My questions: in the above flow, are we actually getting a hardware-bound key from the Secure Enclave or is this working because it's actually defaulting to a non-hardware-backed key? if it is an SE key, is it that the Apple documentation stating that you can only use the SE with the Data Protection Keychain in the user context is outdated (or wrong)? does the above work, but is not an approach sanctioned by Apple? Any feedback on this would be greatly appreciated.

Problem Description: In our App, When we launch the web login part using ASWebAuthentication + Universal Links with callback scheme as "https", we are not receiving callback. Note: We are using "SwiftUIWebAuthentication" Swift Package Manager to display page in ASWebAuth. But when we use custom url scheme instead of Universal link, app able to receive call back every time. We use ".onOpenURL" to receive universal link callback scheme.

Attempting to DECRYPT a cipher message using the Apple API SecKeyCreateDecryptedData(privateKey, .rsaEncryptionOAEPSHA256, encryptedMessage). Decryption ALWAYS fails for every algorithm. SecKeyCreateDecryptedDataWithParameters Error: `Domain=NSOSStatusErrorDomain Code=-50 "algid:encrypt:RSA:OAEP:SHA256: algorithm not supported by the key <SecKeyRef:('com.yubico.Authenticator.TokenExtension:5621CDF8560D4C412030886584EC4C9E394CC376DD9738B0CCBB51924FC26EB6') 0x3007fd150>" UserInfo={numberOfErrorsDeep=0, NSDescription=algid:encrypt:RSA:OAEP:SHA256: algorithm not supported by the key <SecKeyRef:('com.yubico.Authenticator.TokenExtension:5621CDF8560D4C412030886584EC4C9E394CC376DD9738B0CCBB51924FC26EB6') 0x3007fd150>}` Decryption failed: SecKeyCreateDecryptedData returned nil. Error: One or more parameters passed to a function were not valid. When checking with SecKeyIsAlgorithmSupported(privateKey, .decrypt, <ANYalgorithm>) all algorithms fail. Btw - The privateKey does support decryption when retrieving the attributes. Important to know: The private key is a reference to an external private key placed in the iOS Keychain via a 3rd party CryptoTokenKit Extension app. When I perform, the SecKeyCreateSignature(...) and pass in the SAME privateKey reference, the OS automatically calls the 3rd party app to perform a successful signing with the private key that reside on a YubiKey. Here's my code for obtaining the private key reference from an Identity: func getKeyPairFromIdentity() -> (privateKey: SecKey, publicKey: SecKey)? { let query = NSDictionary( dictionary: [ kSecClass as String: kSecClassIdentity, kSecAttrTokenID as String: self.tokenID!, kSecReturnRef as String: kCFBooleanTrue as Any ] ) var identityRef: CFTypeRef? let status = SecItemCopyMatching(query, &identityRef) if status == errSecSuccess, let identity = identityRef { var privateKeyRef: SecKey? let keyStatus = SecIdentityCopyPrivateKey(identity as! SecIdentity, &privateKeyRef) if keyStatus == errSecSuccess, let privateKey = privateKeyRef { let publicKey = SecKeyCopyPublicKey(privateKey) if let publicKey = publicKey { print("Private and public keys extracted successfully.") return (privateKey, publicKey) } else { print("Failed to extract public key from private key.") return nil } } else { print("SecIdentityCopyPrivateKey: Private key not found error: \(keyStatus)") return nil } } else { print("SecIdentity not found or error: \(status)") return nil } }

Since Sun 15th Jun 04:30 (UTC+7) we received lots of following error that causes our device test failure. Could Apple please investigate further? ############################# Operations could not be completed. (com.apple.devicecheck.error error 4.) (serverUnavailable)

Hi, my app is receiving all keyboard events through Input Monitoring preference. It completely stopped to work on macOS 15 Sequoia and I have no idea why. Where can I read what has been changed in Input Monitoring? Thanks!

Hi, I have a certificate, how can I display the certificate content in my Mac app just like Keychain Access app does. Can I popup the certificate content dialog just like Keychain Access app?

We are facing an issue with Keychain sharing across our apps after our Team ID was updated. Below are the steps we have already tried and the current observations: Steps we have performed so far: After our Team ID changed, we opened and re-saved all the provisioning profiles. We created a Keychain Access Group: xxxx.net.soti.mobicontrol (net.soti.mobicontrol is one bundle id of one of the app) and added it to the entitlements of all related apps. We are saving and reading certificates using this access group only. Below is a sample code snippet we are using for the query: [genericPasswordQuery setObject:(id)kSecClassGenericPassword forKey:(id)kSecClass]; [genericPasswordQuery setObject:identifier forKey:(id)kSecAttrGeneric]; [genericPasswordQuery setObject:accessGroup forKey:(id)kSecAttrAccessGroup]; [genericPasswordQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit]; [genericPasswordQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnAttributes]; Issues we are facing: Keychain items are not being shared consistently across apps. We receive different errors at different times: Sometimes errSecDuplicateItem (-25299), even when there is no item in the Keychain. Sometimes it works in a debug build but fails in Ad Hoc / TestFlight builds. The behavior is inconsistent and unpredictable. Expectation / Clarification Needed from Apple: Are we missing any additional configuration steps after the Team ID update? Is there a known issue with Keychain Access Groups not working correctly in certain build types (Debug vs AdHoc/TestFlight)? Guidance on why we are intermittently getting -25299 and how to properly reset/re-add items in the Keychain. Any additional entitlement / provisioning profile configuration that we should double-check. Request you to please raise a support ticket with Apple Developer Technical Support including the above details, so that we can get guidance on the correct setup and resolve this issue.

For testing purposes we have code that calls SecTrustEvaluateAsyncWithError() with a trust object containing a hardcoded leaf certificate and the corresponding intermediate certificate required to form a valid chain. Because the leaf certificate has since expired we pass a date in the past via SecTrustSetVerifyDate() at wich the certificate was still valid, but trust evaluation fails: Error Domain=NSOSStatusErrorDomain Code=-67825 "“<redacted>” certificate is not standards compliant" UserInfo={NSLocalizedDescription=“<redacted>” certificate is not standards compliant, NSUnderlyingError=0x600000c282a0 {Error Domain=NSOSStatusErrorDomain Code=-67825 "Certificate 0 “<redacted>” has errors: Certificate Transparency validation required for this use;" UserInfo={NSLocalizedDescription=Certificate 0 “<redacted>” has errors: Certificate Transparency validation required for this use;}}} I know that App Transport Security enforces Certificate Transparency by default, but is there a way around that here?

I'm trying to export and re-import a P-256 private key that was originally generated via SecKeyCreateRandomKey(), but I keep running into roadblocks. The key is simply exported via SecItemExport() with format formatWrappedPKCS8, and I did set a password just to be sure. Do note that I must use the file-based keychain, as the data protection keychain requires a restricted entitlement and I'm not going to pay a yearly fee just to securely store some private keys for a personal project. The 7-day limit for unsigned/self-signed binaries isn't feasible either. Here's pretty much everything I could think of trying: Simply using SecItemImport() does import the key, but I cannot set kSecAttrLabel and more importantly: kSecAttrApplicationTag. There just isn't any way to pass these attributes upfront, so it's always imported as Imported Private Key with an empty comment. Keys don't support many attributes to begin with and I need something that's unique to my program but shared across all the relevant key entries, otherwise it's impossible to query for only my program's keys. kSecAttrLabel is already used for something else and is always unique, which really only leaves kSecAttrApplicationTag. I've already accepted that this can be changed via Keychain Access, as this attribute should end up as the entry's comment. At least, that's how it works with SecKeyCreateRandomKey() and SecItemCopyMatching(). I'm trying to get that same behaviour for imports. Running SecItemUpdate() afterwards to set these 2 attributes doesn't work either, as now the kSecAttrApplicationTag is suddenly used for the entry's label instead of the comment. Even setting kSecAttrComment (just to be certain) doesn't change the comment. I think kSecAttrApplicationTag might be a creation-time attribute only, and since SecItemImport() already created a SecKey I will never be able to set this. It likely falls back to updating the label because it needs to target something that is still mutable? Using SecItemImport() with a nil keychain (i.e. create a transient key), then persisting that with SecItemAdd() via kSecValueRef does allow me to set the 2 attributes, but now the ACL is lost. Or more precise: the ACL does seem to exist as any OS prompts do show the label I originally set for the ACL, but in Keychain Access it shows as Allow all applications to access this item. I'm looking to enable Confirm before allowing access and add my own program to the Always allow access by these applications list. Private keys outright being open to all programs is of course not acceptable, and I can indeed access them from other programs without any prompts. Changing the ACL via SecKeychainItemSetAccess() after SecItemAdd() doesn't seem to do anything. It apparently succeeds but nothing changes. I also reopened Keychain Access to make sure it's not a UI "caching" issue. Creating a transient key first, then getting the raw key via SecKeyCopyExternalRepresentation() and passing that to SecItemAdd() via kSecValueData results in The specified attribute does not exist. This error only disappears if I remove almost all of the attributes. I can pass only kSecValueData, kSecClass and kSecAttrApplicationTag, but then I get The specified item already exists in the keychain errors. I found a doc that explains what determines uniqueness, so here are the rest of the attributes I'm using for SecItemAdd(): kSecClass: not mentioned as part of the primary key but still required, otherwise you'll get One or more parameters passed to a function were not valid. kSecAttrLabel: needed for my use case and not part of the primary key either, but as I said this results in The specified attribute does not exist. kSecAttrApplicationLabel: The specified attribute does not exist. As I understand it this should be the SHA1 hash of the public key, passed as Data. Just omitting it would certainly be an option if the other attributes actually worked, but right now I'm passing it to try and construct a truly unique primary key. kSecAttrApplicationTag: The specified item already exists in the keychain. kSecAttrKeySizeInBits: The specified attribute does not exist. kSecAttrEffectiveKeySize: The specified attribute does not exist. kSecAttrKeyClass: The specified attribute does not exist. kSecAttrKeyType: The specified attribute does not exist. It looks like only kSecAttrApplicationTag is accepted, but still ignored for the primary key. Even entering something that is guaranteed to be unique still results in The specified item already exists in the keychain, so I think might actually be targeting literally any key. I decided to create a completely new keychain and import it there (which does succeed), but the key is completely broken. There's no Kind and Usage at the top of Keychain Access and the table view just below it shows symmetric key instead of private. The kSecAttrApplicationTag I'm passing is still being used as the label instead of the comment and there's no ACL. I can't even delete this key because Keychain Access complains that A missing value was detected. It seems like the key doesn't really contain anything unique for its primary key, so it will always match any existing key. Using SecKeyCreateWithData() and then using that key as the kSecValueRef for SecItemAdd() results in A required entitlement isn't present. I also have to add kSecUseDataProtectionKeychain: false to SecItemAdd() (even though that should already be the default) but then I get The specified item is no longer valid. It may have been deleted from the keychain. This occurs even if I decrypt the PKCS8 manually instead of via SecItemImport(), so it's at least not like it's detecting the transient key somehow. No combination of kSecAttrIsPermanent, kSecUseDataProtectionKeychain and kSecUseKeychain on either SecKeyCreateWithData() or SecItemAdd() changes anything. I also tried PKCS12 despite that it always expects an "identity" (key + cert), while I only have (and need) a private key. Exporting as formatPKCS12 and importing it with itemTypeAggregate (or itemTypeUnknown) does import the key, and now it's only missing the kSecAttrApplicationTag as the original label is automatically included in the PKCS12. The outItems parameter contains an empty list though, which sort of makes sense because I'm not importing a full "identity". I can at least target the key by kSecAttrLabel for SecItemUpdate(), but any attempt to update the comment once again changes the label so it's not really any better than before. SecPKCS12Import() doesn't even import anything at all, even though it does return errSecSuccess while also passing kSecImportExportKeychain explicitly. Is there literally no way?

Hello, I am currently working on iOS application development using Swift, targeting iOS 17 and above, and need to implement mTLS for network connections. In the registration API flow, the app generates a private key and CSR on the device, sends the CSR to the server (via the registration API), and receives back the signed client certificate (CRT) along with the intermediate/CA certificate. These certificates are then imported on the device. The challenge I am facing is pairing the received CRT with the previously generated private key in order to create a SecIdentity. Could you please suggest the correct approach to generate a SecIdentity in this scenario? If there are any sample code snippets, WWDC videos, or documentation references available, I would greatly appreciate it if you could share them. Thank you for your guidance.

Hi everyone, I’ve been working on storing keys and passwords in the macOS Keychain using the Keychain Services API. Specifically, I’m leveraging SecAccessControlCreateWithFlags to bind items to access control flags, and overall, it’s been working smoothly. I have a question regarding the .applicationPassword flag of SecAccessControlCreateWithFlags. While it successfully prompts the user to input a password, there are no apparent password rules, even a simple “1” is accepted. My questions are: Is there a way to enforce strong password requirements when using the .applicationPassword flag? If enforcing strong passwords isn’t possible, is there an alternative approach to provide a predefined strong password during the creation process, bypassing the need for user input? With SecAccessControlCreateWithFlags, I noticed the item isn’t stored in the traditional file-based Keychain but in an iOS-style Keychain, is there a way to store it in a file-based Keychain while marking it as unexportable? I appreciate any insights or suggestions. Thank you! Neil

Hi everyone, I’d like to clarify something regarding the behavior of Team IDs after an app transfer between Apple Developer accounts. I have an app update that enforces a force update for all users. My plan is to release this update under the current developer account, and then proceed with transferring the app to a different developer account shortly afterward. My concern is: once the transfer is complete, will users who download the same app version (released before the transfer) be logged out due to a change in Team ID? Specifically, does the transferred app continue to use the original Team ID (used to sign the last submitted build), or does the Team ID change immediately upon transfer — affecting Keychain access? Any insights or confirmation on this would be greatly appreciated. Thanks!

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.

In some crashlog files, there are additional pieces of information related to codesigning. I can understand what most of themcorresponds to (ID, TeamID, Flags, Validation Category). But there is one I have some doubt about: Trust Level. As far as I can tell (or at least what Google and other search engines say), this is an unsigned 32 bit integer that defines the trust level with -1 being untrusted, 0, being basically an Apple executable and other potential bigger values corresponding to App Store binaries, Developer ID signature, etc. Yet, I'm not able to find a corresponding detailed documentation about this on Apple's developer website. I also had a look at the LightweightCodeRequirements "include" file and there does not seem to be such a field available. [Q] Is there any official documentation listing the different values for this trust level value and providing a clear description of what it corresponds to?