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CRYPTO(4)              FreeBSD Kernel Interfaces Manual              CRYPTO(4)

NAME
     crypto -- hardware crypto access driver

SYNOPSIS
     device crypto

DESCRIPTION
     The crypto driver provides userland applications access to hardware
     crypto support via the kernel.  The /dev/crypto device 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 ses-
                   sion.

FEATURES
     Depending on hardware being present, the following symmetric and asymmet-
     ric 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), safe(4), ubsec(4), crypto(9)

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

FreeBSD 4.10                   November 21, 2002                  FreeBSD 4.10

NAME | SYNOPSIS | DESCRIPTION | FEATURES | FILES | SEE ALSO | HISTORY

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