---
name: "ccp"
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/ccp"
---

# ccp(4)

AMD cryptographic co-processor

## NAME

**ccp** – AMD cryptographic co-processor

## SYNOPSIS

**ccp\* at acpi?** **ccp\* at fdt?** **ccp\* at pci?**

## DESCRIPTION

AMD cryptographic co-processor devices provide offload for various cryptographic algorithms, offload of zlib compression and decompression, and a random number generator.

The **ccp** driver supports feeding output of the random number generator into the kernel entropy pool.

## SEE ALSO

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

## HISTORY

The **ccp** driver first appeared in OpenBSD 6.4.

## AUTHORS

The **ccp** driver was written by David Gwynne ⟨*dlg@openbsd.org*⟩.