random.h File Reference

#include "crypto/chacha20.h"
#include "crypto/common.h"
#include "uint256.h"
#include <stdint.h>

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Classes
class	FastRandomContext
	Fast randomness source. More...

Functions
void	RandAddSeed ()
void	GetRandBytes (unsigned char *buf, int num)
	Functions to gather random data via the OpenSSL PRNG. More...
uint64_t	GetRand (uint64_t nMax)
int	GetRandInt (int nMax)
uint256	GetRandHash ()
void	RandAddSeedSleep ()
	Add a little bit of randomness to the output of GetStrongRangBytes. More...
void	GetStrongRandBytes (unsigned char *buf, int num)
	Function to gather random data from multiple sources, failing whenever any of those source fail to provide a result. More...
void	GetOSRand (unsigned char *ent32)
	Get 32 bytes of system entropy. More...
bool	Random_SanityCheck ()
	Check that OS randomness is available and returning the requested number of bytes. More...
void	RandomInit ()
	Initialize the RNG. More...

Function Documentation

GetOSRand()

void GetOSRand

(

unsigned char *

ent32

)

Get 32 bytes of system entropy.

Do not use this in application code: use GetStrongRandBytes instead.

Definition at line 203 of file random.cpp.

GetRand()

uint64_t GetRand

(

uint64_t

nMax

)

Definition at line 353 of file random.cpp.

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GetRandBytes()

void GetRandBytes	(	unsigned char *	buf,
		int	num
	)

Functions to gather random data via the OpenSSL PRNG.

Definition at line 274 of file random.cpp.

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GetRandHash()

uint256 GetRandHash

(

)

Definition at line 373 of file random.cpp.

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GetRandInt()

int GetRandInt

(

int

nMax

)

Definition at line 368 of file random.cpp.

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GetStrongRandBytes()

void GetStrongRandBytes	(	unsigned char *	buf,
		int	num
	)

Function to gather random data from multiple sources, failing whenever any of those source fail to provide a result.

Definition at line 318 of file random.cpp.

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RandAddSeed()

void RandAddSeed

(

)

Definition at line 131 of file random.cpp.

RandAddSeedSleep()

void RandAddSeedSleep

(

)

Add a little bit of randomness to the output of GetStrongRangBytes.

This sleeps for a millisecond, so should only be called when there is no other work to be done.

Definition at line 283 of file random.cpp.

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Random_SanityCheck()

bool Random_SanityCheck

(

)

Check that OS randomness is available and returning the requested number of bytes.

Definition at line 412 of file random.cpp.

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RandomInit()

void RandomInit

(

)

Initialize the RNG.

Definition at line 465 of file random.cpp.

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