---
title: kSecTrustExtendedValidation
framework: security
role: symbol
role_heading: Global Variable
path: security/ksectrustextendedvalidation
---

# kSecTrustExtendedValidation

A key whose value is a Boolean used to indicate Extended Validation.

## Declaration

```swift
let kSecTrustExtendedValidation: CFString
```

## Discussion

Discussion When the key is present and the value set to kCFBooleanTrue, it indicates the chain is validated for Extended Validation (EV).