The
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, 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
device is created.
The following
ioctl(2)
calls apply only to the
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 session.
FEATURES
Depending on hardware being present, the following symmetric and
asymmetric cryptographic features are potentially available from
/dev/crypto
