# EncryptionKeyPair extends [KeyPair](KeyPair.md)

**Namespace**: `\ParagonIE\Halite`

This [`KeyPair`](KeyPair.md) class represents a secret key and public key used for deriving a
shared secret using X25519, which is then used for symmetric-key encryption.

* Secret Key: [`EncryptionSecretKey`](Asymmetric/EncryptionSecretKey.md)
* Public Key: [`EncryptionPublicKey`](Asymmetric/EncryptionPublicKey.md)

## Methods

### Constructor