---
title: kSecTrustCertificateTransparency
framework: security
role: symbol
role_heading: Global Variable
path: security/ksectrustcertificatetransparency
---

# kSecTrustCertificateTransparency

A key whose value is a Boolean used to indicate Certificate Transparency.

## Declaration

```swift
let kSecTrustCertificateTransparency: CFString
```

## Discussion

Discussion When the key is present and the value set to kCFBooleanTrue, it indicates the chain is Certificate Transparency (CT) qualified.