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# kSecTrustExtendedValidation

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

```
let kSecTrustExtendedValidation: CFString
```

## Discussion

When the key is present and the value set to <doc://com.apple.documentation/documentation/CoreFoundation/kCFBooleanTrue>, it indicates the chain is validated for Extended Validation (EV).

---

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