---
title: kSecPolicyKU_DecipherOnly
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecpolicyku_decipheronly
---

# kSecPolicyKU_DecipherOnly

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

## Declaration

```swift
let kSecPolicyKU_DecipherOnly: CFString
```