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# NEVPNIKEAuthenticationMethod.certificate

Use a certificate and private key as the authentication credential. The certificate and private key set in the [`identityReference`](/documentation/NetworkExtension/NEVPNProtocol/identityReference) or [`identityData`](/documentation/NetworkExtension/NEVPNProtocol/identityData) property will be used.

```
case certificate
```

---

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