crsyspqc::Rng Class Reference

Random Number Generator to NIST SP800-90. More...

Public Types
enum	Opts : unsigned int
	Rng options More...

Static Public Member Functions
static bvec_t	Bytes (int n)
	Generate an array of random bytes. More...
static int	Initialize (const std::string &seedFile)
	Initialize the RNG generator using a seed file. More...
static int	InitializeEx (Opts opts=Opts::Default)
	Query and initialize the RNG generator using Intel(R) DRNG, if available. More...

Detailed Description

Random Number Generator to NIST SP800-90.

Member Enumeration Documentation

Opts

enum crsyspqc::Rng::Opts : unsigned int

Rng options

Enumerator
Default	Default options.
NoIntelDrng	Turn off support for INTEL(R) DRNG for the current session.

Member Function Documentation

Bytes()

static bvec_t crsyspqc::Rng::Bytes ( int  n )

static

Generate an array of random bytes.

Parameters

n	Required number of random bytes

Returns

Array of random bytes

Initialize()

static int crsyspqc::Rng::Initialize ( const std::string &  seedFile )

static

Initialize the RNG generator using a seed file.

Parameters

seedFile

Full path name of seed file.

Returns

Zero on success.

Remarks

If the seed file does not exist, it will be created. If it exists, it will be automatically updated with more entropy.

InitializeEx()

static int crsyspqc::Rng::InitializeEx ( Opts  opts = Opts::Default )

static

Query and initialize the RNG generator using Intel(R) DRNG, if available.

Parameters

opts	Option flags (optional)

Returns

Support status for Intel(R) DRNG. If available, then returns a positive value 1 or greater; else a negative error code.

Remarks

Use the Rng.Opts.NoIntelDrng option if for some reason it is interfering with your application.