Copyright (c) 2001 Theo de Raadt
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$FreeBSD: head/share/man/man4/crypto.4 171696 2007-08-02 08:04:48Z bz $
.Dd August 1, 2007 .Dt CRYPTO 4 .Os .Sh NAME .Nm crypto , .Nm cryptodev .Nd hardware crypto access driver .Sh SYNOPSIS .Cd device crypto .Cd device cryptodev .Sh DESCRIPTION The .Nm driver provides a device-independent framework to support cryptographic operations in the kernel. The .Nm cryptodev driver provides userland applications access to this support through the
a /dev/crypto device. This node primarily operates in an .Xr ioctl 2 based model, permitting a variety of applications to query device capabilities, submit transactions, and get results.
p If .Ar count given in the specification, and is greater than 0, a maximum of one .Nm device is created.
p The following .Xr ioctl 2 calls apply only to the .Nm devices: l -tag -width ".Dv CIOCGSESSION" t Dv CIOCGSESSION Setup a new crypto session for a new type of operation. t Dv CIOCFSESSION Free a previously established session. t Dv CIOCCRYPT Perform a crypto operation against a previously setup session. .El .Sh FEATURES Depending on hardware being present, the following symmetric and asymmetric cryptographic features are potentially available from
p l -tag -width ".Dv CRYPTO_RIPEMD160_HMAC" -offset indent -compact t Dv CRYPTO_DES_CBC t Dv CRYPTO_3DES_CBC t Dv CRYPTO_BLF_CBC t Dv CRYPTO_CAST_CBC t Dv CRYPTO_SKIPJACK_CBC t Dv CRYPTO_MD5_HMAC t Dv CRYPTO_SHA1_HMAC t Dv CRYPTO_RIPEMD160_HMAC t Dv CRYPTO_MD5_KPDK t Dv CRYPTO_SHA1_KPDK t Dv CRYPTO_AES_CBC t Dv CRYPTO_ARC4 t Dv CRYPTO_MD5 t Dv CRYPTO_SHA1 t Dv CRK_MOD_EXP t Dv CRK_MOD_EXP_CRT t Dv CRK_DSA_SIGN t Dv CRK_DSA_VERIFY t Dv CRK_DH_COMPUTE_KEY .El .Sh FILES l -tag -width ".Pa /dev/crypto" -compact t Pa /dev/crypto crypto access device .El .Sh SEE ALSO .Xr hifn 4 , .Xr ipsec 4 , .Xr padlock 4 , .Xr safe 4 , .Xr ubsec 4 , .Xr geli 8 , .Xr crypto 9 .Sh HISTORY The .Nm driver first appeared in .Ox 3.0 . The .Nm driver was imported to .Fx 5.0 .