NAME

       crypto, cryptodev — hardware crypto access driver

SYNOPSIS

       device crypto
       device cryptodev

DESCRIPTION

       The  crypto  driver  provides  a  device-independent framework to support cryptographic operations in the
       kernel.  The cryptodev  driver  provides  userland  applications  access  to  this  support  through  the
       /dev/crypto  device.   This  node  primarily operates in an ioctl(2) based model, permitting a variety of
       applications to query device capabilities, submit transactions, and get results.

       If count given in the specification, and is greater than 0, a maximum of one crypto device is created.

       The following ioctl(2) calls apply only to the crypto devices:

       CIOCGSESSION  Setup a new crypto session for a new type of operation.

       CIOCFSESSION  Free a previously established session.

       CIOCCRYPT     Perform a crypto operation against a previously setup session.

FEATURES

       Depending on hardware being present, the following symmetric and asymmetric  cryptographic  features  are
       potentially available from /dev/crypto:

             CRYPTO_DES_CBC
             CRYPTO_3DES_CBC
             CRYPTO_BLF_CBC
             CRYPTO_CAMELLIA_CBC
             CRYPTO_CAST_CBC
             CRYPTO_SKIPJACK_CBC
             CRYPTO_MD5_HMAC
             CRYPTO_SHA1_HMAC
             CRYPTO_RIPEMD160_HMAC
             CRYPTO_MD5_KPDK
             CRYPTO_SHA1_KPDK
             CRYPTO_AES_CBC
             CRYPTO_ARC4
             CRYPTO_MD5
             CRYPTO_SHA1
             CRK_MOD_EXP
             CRK_MOD_EXP_CRT
             CRK_DSA_SIGN
             CRK_DSA_VERIFY
             CRK_DH_COMPUTE_KEY

FILES

       /dev/crypto  crypto access device

SEE ALSO

       aesni(4), glxsb(4), hifn(4), ipsec(4), padlock(4), safe(4), ubsec(4), geli(8), crypto(9)

HISTORY

       The crypto driver first appeared in OpenBSD 3.0.  The crypto driver was imported to FreeBSD 5.0.

Debian                                          September 7, 2010                                      CRYPTO(4)