---
name: "bcmrng"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/bcmrng"
---

# bcmrng(4)

Broadcom BCM2835/BCM2836/BCM2837 random number generator

## NAME

**bcmrng** – Broadcom BCM2835/BCM2836/BCM2837 random number generator

## SYNOPSIS

**bcmrng\* at fdt?**

## DESCRIPTION

The **bcmrng** driver provides support for the random number generator found on the Broadcom BCM2835/BCM2836/BCM2837 SoC.

It feeds the random subsystem's entropy pool with up to 128 bits of random data every second.

## SEE ALSO

[intro(4)](/intro/4.md), [random(4)](/random/4.md), [arc4random(9)](/arc4random/9.md)

## HISTORY

The **bcmrng** driver first appeared in OpenBSD 6.3.

## AUTHORS

The **bcmrng** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.