net80211 can not load wlan_ccmp.ko

I am using atheros AR5211 802.11a+b card bus WLAN adapter.
And installed ports/security/wpa_supplicant, It required wlan_ccmp
module loaded when I need AES encryption.
Every time I load wlan_ccmp will failed, like this:

# kldload wlan_ccmp
link_elf: symbol _rijndael_set_key undefined
#

It seems function _rijndael_set_key() not loaded.