vrng(4)

vrng4

Virtual random number generator

Usage

vrng0 at vbus?

Overview

The vrng driver provides support for the random number generation service provided by the UltraSPARC Hypervisor as found on sun4v systems.

Driven by periodic checks for available data from the generator, vrng supplies entropy to the random(4) driver for common usage.

History

The vrng driver first appeared in OpenBSD 4.5.

Authors

The vrng driver was written by Mark Kettenis ⟨[email protected]⟩.

Bugs

The vrng driver should probably do periodic “health checks” when running in a Trusted Domain, but currently does not.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.