n2rng(7d)							      Devices								 n2rng(7d)

NAME

       n2rng - Ultra-SPARC T2 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 CMT processor.

       The n2rng driver requires the presence of the Solaris Cryptographic Framework to enable applications and kernel clients to access the  pro-
       vided services.

CONFIGURATION

       You configure the n2rng driver by defining properties in /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,  how-
				   ever, this may inhibit support personnel.

CRYPTO STATISTICS

       Solaris crypto drivers must implement statistics variables. Statistics are reported by n2rng using  the kstat(7D) 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(7D) 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

       /kernel/drv/sparcv9/n2rng

	   64-bit ELF kernel driver.

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

	   Configuration file.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |SPARC			   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcakr.v		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Committed 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cryptoadm(1M), kstat(1M), printers.conf(4), attributes(5)

       Solaris Cryptographic Framework - Solaris Software Developer Collection

       Solaris Security for Developer's Guide - Solaris Software Developer Collection

SunOS 5.11							    20 Oct 208								 n2rng(7d)