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# integrityAlgorithm

The algorithm used by the Security Association to verify the integrity of data.

```
var integrityAlgorithm: NEVPNIKEv2IntegrityAlgorithm { get set }
```

## Discussion

The default value of this property is [`NEVPNIKEv2IntegrityAlgorithm.SHA256`](/documentation/NetworkExtension/NEVPNIKEv2IntegrityAlgorithm/SHA256).

The system infers its IKE psedo-random number generation algorithm based on the integrity algorithm.

---

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