CRYPTO(4) OpenBSD Programmer's Manual CRYPTO(4)NAMEcrypto - hardware crypto access driver
SYNOPSIS
pseudo-device crypto [count]
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 is 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 Set up a new crypto session for a new type of operation.
CIOCFSESSION Free a previously established session.
CIOCCRYPT Perform a crypto operation against a previously set up
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_MD5_HMAC
CRYPTO_SHA1_HMAC
CRYPTO_RIPEMD160_HMAC
CRYPTO_MD5_KPDK
CRYPTO_SHA1_KPDK
CRYPTO_AES_CBC
CRYPTO_AES_CTR
CRYPTO_AES_XTS
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 ALSOhifn(4), lofn(4), noct(4), nofn(4), safe(4), ubsec(4), crypto(9)HISTORY
The crypto driver appeared in OpenBSD 3.0.
OpenBSD 4.9 October 6, 2010 OpenBSD 4.9
