---
title: errSecSMIMEBadKeyUsage
framework: security
role: symbol
role_heading: Global Variable
path: security/errsecsmimebadkeyusage
---

# errSecSMIMEBadKeyUsage

The key usage is not compatible with SMIME.

## Declaration

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