---
title: kSecPolicyKU_KeyAgreement
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecpolicyku_keyagreement
---

# kSecPolicyKU_KeyAgreement

If true, the certificate’s key usage must allow it to be used for key agreement.

## Declaration

```swift
let kSecPolicyKU_KeyAgreement: CFString
```