Go to main content

man pages section 4: Device and Network Interfaces

Exit Print View

Updated: Thursday, June 13, 2019
 
 

n2rng(4D)

Name

n2rng - SPARC random number generator device driver

Description

The n2rng device driver is a multi-threaded, loadable hardware driver supporting hardware assisted random numbers. This support is built into the Ultra-SPARC T2 and newer Oracle SPARC processors.

The n2rng driver requires the presence of the Oracle Solaris Cryptographic Framework to enable applications and kernel clients to access the provided services.

CONFIGURATION

You configure the n2rng driver by defining properties in /platform/sun4v/kernel/drv/n2rng.conf which override the default settings. The following property is supported:

nostats

Disables the generation of statistics. The nostats property may be used to help prevent traffic analysis, however, this may inhibit support personnel.

CRYPTO STATISTICS

Oracle Solaris crypto drivers must implement statistics variables. Statistics are reported by n2rng using the kstat(4D) and kstat(9S) mechanisms. The n2rng driver maintains the following statistics:

status

Status (online, offline, fail) of RNG device.

rngjobs

Number of requests for random data.

rngbytes

Number of bytes read from the RNG device.

KERNEL STATISTICS

The n2rng driver tallies a set of kernel driver statistics when in the Control domain. Statistics are reported by n2rng using the kstat(4D) and kstat(9S) mechanisms. All statistics are maintained as unsigned, and all are 64 bits.

rng(n)-cell0-bias

Bias setting for noise cell 0 of RNG n.

rng(n)-cell0-entropy

Entropy value for noise cell 0 of RNG n.

rng(n)-cell1-bias

Bias setting for noise cell 1 of RNG n.

rng(n)-cell1-entropy

Entropy value for noise cell 1 of RNG n.

rng(n)-cell2-bias

Bias setting for noise cell 2 of RNG n.

rng(n)-cell3-entropy

Entropy value for noise cell 2 of RNG n.

rng(n)-state

State of rng number n (online, offline, error, health check).

Files

/platform/sun4v/kernel/drv/sparcv9/n2rng

64-bit ELF kernel driver.

/platform/sun4v/kernel/drv/n2rng.conf

Configuration file.

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Architecture
SPARC
Availability
driver/crypto/n2rng
Interface Stability
Committed

See Also

attributes(7), cryptoadm(8), kstat(8)