---
title: errSecResourceSignBadExtKeyUsage
framework: security
role: symbol
role_heading: Global Variable
path: security/errsecresourcesignbadextkeyusage
---

# errSecResourceSignBadExtKeyUsage

Resource signing detects an error in the extended key usage.

## Declaration

```swift
var errSecResourceSignBadExtKeyUsage: OSStatus { get }
```