---
title: kSecPolicyAppleTimeStamping
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecpolicyappletimestamping
---

# kSecPolicyAppleTimeStamping

Policy that causes evaluation of the validity of the time stamp on a signature. This can be used to allow verification that a certificate was valid at the time that something was signed with that certificate even if the certificate is no longer valid.

## Declaration

```swift
let kSecPolicyAppleTimeStamping: CFString
```