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# Randomization

Configure a device for the guest system to use to generate random numbers.

## Topics

### Configurations

[`class VZVirtioEntropyDeviceConfiguration`](/documentation/Virtualization/VZVirtioEntropyDeviceConfiguration)

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

[`class VZEntropyDeviceConfiguration`](/documentation/Virtualization/VZEntropyDeviceConfiguration)

The common configuration traits for entropy devices.


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