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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 assymet-
     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), ubsec(4),	crypto(9)

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

FreeBSD	10.1			October	3, 2002			  FreeBSD 10.1

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

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