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

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, permit-
     ting 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
     fast_ipsec(4), hifn(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.

FreeBSD 6.2                    January 16, 2004                    FreeBSD 6.2

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

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