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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	9.2		       January 16, 2004			   FreeBSD 9.2

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

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