Provided by: freebsd-manpages_7.0-2_all bug

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_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

     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.