---
name: "wlan_ccmp"
section: "4"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/wlan_ccmp"
---

# wlan\_ccmp(4)

AES-CCMP crypto support for 802.11 devices

## NAME

**wlan\_ccmp** – AES-CCMP crypto support for 802.11 devices

## SYNOPSIS

**device wlan\_ccmp**

## DESCRIPTION

The **wlan\_ccmp** module handles the AES-CCMP cryptographic requirements of the WPA and 802.11i protocols. It does encapsulation and decapsulation of CCMP-encoded 802.11 frames and optionally calculates the AES-CCMP cipher. The **wlan\_ccmp** module is an 802.11 cryptographic plugin module for use by the [wlan(4)](/wlan/4.md) module. This module is automatically loaded if an AES-CCMP key is configured; typically by a WPA supplicant program such as wpa\_supplicant, or a WPA authenticator program such as **hostapd**. Should the underlying network device not be capable of doing the AES-CCMP calculations in hardware, the **wlan\_ccmp** module will do the work.

## SEE ALSO

[wlan(4)](/wlan/4.md), [wlan\_tkip(4)](/wlan_tkip/4.md), [wlan\_wep(4)](/wlan_wep/4.md)

## STANDARDS

More information can be found in the IEEE 802.11, WPA, and 802.11i Standards.

## HISTORY

The **wlan\_ccmp** driver first appeared in FreeBSD 6.0.