Xcode 27 Beta 3: Enterprise Security and Identity Integration Updates for iOS 18/macOS 15

What’s New in Xcode 27 Beta 3 (27A5218g): Apple Identity and Security APIs

Xcode 27 Beta 3, released July 2024, supports developer builds for iOS 18, macOS 15, watchOS 11, and tvOS 18. This release enables several new and updated APIs critical for enterprise identity and security integration, including:

• AuthenticationServices updates for Passkeys and Sign in with Apple
• Enhanced LocalAuthentication framework with improved biometrics and Secure Enclave key management
• MDM and SSO Extension enhancements for managed device fleets
• Support for ISO 18013-5 mobile driver’s licenses and Verifiable Credentials in Wallet

API and Platform Version Requirements

• AuthenticationServices: New Passkey APIs require iOS 18/macOS 15
• LocalAuthentication: Improved biometric enrollment detection requires iOS 18/macOS 15
• SSO Extension: Kerberos and enterprise SSO profile changes require macOS 15/iOS 18
• MDM: Declarative Device Management payloads and new restrictions are supported on iOS 18/macOS 15

What’s Coming: WWDC 2024 and Beta Roadmap Highlights

• Passkey Synchronization Expansion: iCloud Keychain Passkey sync now supports cross-platform sign-in flows, including new QR-based device pairing (see WWDC24 session 10145).
• Managed Apple ID SCIM Enhancements: Apple Business Manager will support granular role assignments and federation improvements with Entra ID and Okta (preview documentation).
• MDM Declarative Management: Declarative device management profiles will gain device posture reporting, supported in iOS 18/macOS 15 and Xcode 27+.
• Sign in with Apple for Enterprise Apps: OIDC flows now support enterprise SSO extensions, allowing managed Apple ID federation for internal apps.
• Digital Credentials in Wallet: Developers can now issue and verify ISO 18013-5 driver’s licenses, student IDs, and Verifiable Credentials using Apple Wallet APIs (WWDC24 session 10167).

Why This Is Better: Concrete Improvements Over Previous Releases

• Passkeys: iOS 18/macOS 15 resolve previous limitations with third-party browser support and cross-device authentication, closing gaps with Android/Windows FIDO2 implementations.
• MDM Declarative Management: IT admins can now set compliance states and trigger device actions without full profile push, speeding up remediation and improving zero-touch onboarding.
• Sign in with Apple: OIDC support for enterprise SSO lets internal apps leverage managed Apple ID federation, reducing bespoke SAML/LDAP infrastructure.
• Biometric Authentication: Improved Secure Enclave APIs allow stronger key isolation and detection of device tampering, raising security compared to legacy Touch ID/Face ID flows.
• Digital Credentials: Mobile driver’s license and Verifiable Credentials in Wallet now match regulatory requirements (ISO 18013-5, NIST 800-63-3), enabling compliant eID workflows.

How to Implement or Respond: Dev and Admin Steps

Passkey Integration (AuthenticationServices, iOS 18/macOS 15)

To adopt platform passkey sign-in with cross-device support, update your sign-in flow using the new ASAuthorizationPlatformPublicKeyCredentialProvider APIs:

import AuthenticationServices

let provider = ASAuthorizationPlatformPublicKeyCredentialProvider(relyingPartyIdentifier: "example.com")
let request = provider.createCredentialRegistrationRequest()
request.userVerificationPreference = .required

let controller = ASAuthorizationController(authorizationRequests: [request])
controller.delegate = self
controller.performRequests()

For cross-device passkey pairing, use the new QR flow:

let pairingRequest = ASAuthorizationDevicePairingRequest(qrCode: scannedQRCode)
let controller = ASAuthorizationController(authorizationRequests: [pairingRequest])
controller.performRequests()

Enable Declarative Device Management in MDM (iOS 18/macOS 15)

Deploy new declarative management payloads to automate compliance and device actions:

  PayloadType
  com.apple.declarative.management
  PayloadVersion
  1
  DevicePosture
  
    RequirePasscode
    
    RequireBiometrics
    
  

Kerberos SSO Extension Updates (macOS 15/iOS 18)

To update your enterprise SSO extension for managed Apple IDs:

  PayloadType
  com.apple.sso.extension.kerberos
  PayloadVersion
  1
  Realm
  EXAMPLE.COM
  ManagedAppleIDSupport
  

Digital Credentials in Wallet (iOS 18)

Issue a driver’s license credential using the new Wallet API:

import PassKit

let credential = PKDigitalCredential(type: .driversLicense, issuer: issuer)
credential.issue(to: user, completion: { result in
  switch result {
    case .success(let credential): print("Credential issued: \(credential)")
    case .failure(let error): print("Error: \(error)")
  }
})

What to Check: Verification Steps

• Passkey Support: Confirm device enrollment in iCloud Keychain on iOS 18/macOS 15 and test cross-device sign-in with your app.
• MDM Declarative Management: In your MDM console, verify device posture compliance state updates in real-time for newly enrolled devices.
• Kerberos SSO Profile: On macOS 15, check System Settings > Profiles and confirm SSO extension profile is active and includes Managed Apple ID support.
• Digital Credentials: Issue a test credential to Apple Wallet and verify it displays as ISO-compliant (see Wallet > ID tab).

Bottom Line: Prioritised Recommendation

Enterprise IT admins and Apple developers must immediately begin testing Xcode 27 Beta 3 and iOS 18/macOS 15 features for Passkeys, SSO extensions, and declarative MDM. Update sign-in flows to leverage platform passkeys and OIDC SSO, deploy updated MDM payloads, and validate digital credential issuance in Wallet. Target full migration by December 2024 to avoid legacy security gaps and ensure regulatory compliance.