---
title: EphemeralPrivateKey
framework: cryptokit
role: symbol
role_heading: Associated Type
path: cryptokit/hpkediffiehellmanpublickey/ephemeralprivatekey
---

# EphemeralPrivateKey

The type of the ephemeral private key.

## Declaration

```swift
associatedtype EphemeralPrivateKey : HPKEDiffieHellmanPrivateKeyGeneration where Self == Self.EphemeralPrivateKey.PublicKey
```