---
title: VZVirtioEntropyDeviceConfiguration
framework: virtualization
role: symbol
role_heading: Class
path: virtualization/vzvirtioentropydeviceconfiguration
---

# VZVirtioEntropyDeviceConfiguration

A source of entropy for the guest’s random number generator.

## Declaration

```swift
class VZVirtioEntropyDeviceConfiguration
```

## Mentioned in

Creating and Running a Linux Virtual Machine

## Overview

Overview Use a VZVirtioEntropyDeviceConfiguration object to expose a source of entropy for the guest operating system’s random-number generator. When you create this object and add it to your virtual machine’s configuration, the virtual machine configures a Virtio-compliant entropy device. The guest operating system uses this device as a seed to generate random numbers. Create a VZVirtioEntropyDeviceConfiguration object and add it to the entropyDevices property of your virtual machine’s configuration.

## Topics

### Creating the configuration object

- [init()](virtualization/vzvirtioentropydeviceconfiguration/init().md)

## Relationships

### Inherits From

- [VZEntropyDeviceConfiguration](virtualization/vzentropydeviceconfiguration.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Configurations

- [VZEntropyDeviceConfiguration](virtualization/vzentropydeviceconfiguration.md)