---
title: keySystem
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcontentkeyspecifier/keysystem
---

# keySystem

The key system that generates content keys.

## Declaration

```swift
var keySystem: AVContentKeySystem { get }
```

## See Also

### Inspecting a specifier

- [identifier](avfoundation/avcontentkeyspecifier/identifier.md)
- [options](avfoundation/avcontentkeyspecifier/options.md)