Pseudo Random Number Generator (PRNG) More...

Detailed Description

Pseudo Random Number Generator (PRNG)

Modules
	SHAX random number generator
	SHA based random number generator implementation(CSPRNG).

Files
file	random.h
	Common interface to the software PRNG.

Macros
#define	RANDOM_SEED_DEFAULT (1)
	Seed selected when all tries to collect seeds from a random source failed.

#define	PRNG_FLOAT (0)
	Enables support for floating point random number generation.

Functions
void	random_init (uint32_t s)
	initializes PRNG with a seed More...

void	random_init_by_array (uint32_t init_key[], int key_length)
	initialize by an array with array-length init_key is the array for initializing keys key_length is its length slight change for C++, 2004/2/26 More...

uint32_t	random_uint32 (void)
	generates a random number on [0,0xffffffff]-interval More...

void	random_bytes (uint8_t *buf, size_t size)
	writes random bytes in the [0,0xff]-interval to memory

uint32_t	random_uint32_range (uint32_t a, uint32_t b)
	generates a random number r with a <= r < b. More...

Function Documentation

void random_init ( uint32_t s )

initializes PRNG with a seed

Warning: Currently, the random module uses a global state => multiple calls to random_init will reset the existing state of the PRNG.

Parameters

s	seed for the PRNG

initialize by an array with array-length init_key is the array for initializing keys key_length is its length slight change for C++, 2004/2/26

Parameters

init_key	array of keys (seeds) to initialize the PRNG
key_length	number of lements in init_key

uint32_t random_uint32 ( void )

generates a random number on [0,0xffffffff]-interval

generates a random number r with a <= r < b.

Parameters

[in]	a	minimum for random number
[in]	b	upper bound for random number