# ClientKey
## Properties
**client_key** | Option<**String**> | A Base64-encoded X25519 public key that can be used with a [libsodium-compatible sealed box](https://libsodium.gitbook.io/doc/public-key_cryptography/sealed_boxes) to encrypt secrets before upload. |
**signature** | Option<**String**> | A Base64-encoded signature of the client key. The signature is generated using the signing key and must be verified before using the client key. |
**expires_at** | Option<**String**> | Date and time in ISO 8601 format. | [readonly]
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