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# ASAuthorizationProviderExtensionKeyType

The key types for platform single sign-on.

```
enum ASAuthorizationProviderExtensionKeyType
```

## Topics

### Identifying the key types

[`case userDeviceEncryption`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/userDeviceEncryption)

The user device encryption key.

[`case userDeviceSigning`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/userDeviceSigning)

The user device signing key.

[`case userSecureEnclaveKey`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/userSecureEnclaveKey)

The user Secure Enclave key.

### Enumeration Cases

[`case currentDeviceEncryption`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/currentDeviceEncryption)

[`case currentDeviceSigning`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/currentDeviceSigning)

[`case sharedDeviceEncryption`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/sharedDeviceEncryption)

[`case sharedDeviceSigning`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/sharedDeviceSigning)

[`case userSmartCard`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/userSmartCard)

### Initializers

[`init?(rawValue: Int)`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionKeyType/init(rawValue:))

## Relationships

### Conforms To

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Sendable`](/documentation/Swift/Sendable)

---

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