| UBSEC(4) | Device Drivers Manual | UBSEC(4) | 
ubsec —
ubsec* at pci? dev ? function ?
ubsec driver supports cards containing any of the
  following chips:
The ubsec driver registers itself to
    accelerate DES, Triple-DES, MD5, SHA1, MD5-HMAC, and SHA1-HMAC operations
    for opencrypto(9), and
    thus for ipsec(4) and
    crypto(4). The driver also
    supports acceleration of AES-CBC with the BCM5823 or newer.
On those models which contain a public key engine (almost all of the more recent ones), this feature is registered with the crypto(4) subsystem.
On all models except the Bluesteel 5501 and Broadcom 5801, the driver registers itself to provide random data to the rnd(4) subsystem.
ubsec device driver appeared in
  OpenBSD 2.8. The ubsec device
  driver was imported to FreeBSD 5.0, back-ported to
  FreeBSD 4.8, and subsequently imported to
  NetBSD 2.0.
| June 13, 2018 | NetBSD 10.0 |