---
title: kSecTrustRevocationValidUntilDate
framework: security
role: symbol
role_heading: Global Variable
path: security/ksectrustrevocationvaliduntildate
---

# kSecTrustRevocationValidUntilDate

A key whose value indicates the earliest date at which revocation information becomes stale.

## Declaration

```swift
let kSecTrustRevocationValidUntilDate: CFString
```

## Discussion

Discussion This key is only present if the kSecTrustRevocationChecked key has a value of kCFBooleanTrue. The value is a CFDate representing the earliest date at which the revocation information for one of the certificates in this chain might change.