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

# glxsb(4)

Geode LX Security Block crypto accelerator

## NAME

**glxsb** – Geode LX Security Block crypto accelerator

## SYNOPSIS

**glxsb\* at pci?**

## DESCRIPTION

The **glxsb** driver supports the security block of the Geode LX series processors. The Geode LX is a member of the AMD Geode family of integrated x86 system chips.

Driven by periodic checks for available data from the generator, **glxsb** supplies entropy to the [random(4)](/random/4.md) driver for common usage.

**glxsb** also supports acceleration of AES-CBC operations for [ipsec(4)](/ipsec/4.md).

## SEE ALSO

[intro(4)](/intro/4.md), [ipsec(4)](/ipsec/4.md), [pci(4)](/pci/4.md), [random(4)](/random/4.md), [crypto(9)](/crypto/9.md)

## HISTORY

Support for **glxsb** was added in OpenBSD 4.1.

## AUTHORS

The **glxsb** driver was written by Tom Cosgrove.