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# kSecTrustRevocationChecked

A key whose value indicates the outcome of revocation checking during trust evaluation.

```
let kSecTrustRevocationChecked: CFString
```

## Discussion

This key is only present if the evaluation process conducted revocation checking on the chain. The value is a Boolean set to <doc://com.apple.documentation/documentation/CoreFoundation/kCFBooleanTrue> if revocation checking was successful and none of the certificates in the chain were revoked. The value is <doc://com.apple.documentation/documentation/CoreFoundation/kCFBooleanFalse> if no current revocation status could be obtained for one or more certificates in the chain due to connection problems or timeouts. You can take this outcome as a hint to retry revocation checking again at a later time.

---

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