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# SecurityMessage.CipherSuite.p256

A cipher suite that uses NIST P-256 elliptic curve cryptography.

```
case p256
```

## Discussion

Use this cipher suite as a fallback for Bluetooth only. The [`AccessoryTransport.internet`](/documentation/AccessoryTransportExtension/AccessoryTransport/internet) or [`AccessoryTransport.localNetwork`](/documentation/AccessoryTransportExtension/AccessoryTransport/localNetwork) transport types require [`SecurityMessage.CipherSuite.xWing`](/documentation/AccessoryTransportExtension/SecurityMessage/CipherSuite-swift.enum/xWing) instead.

---

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