arc4random.c File Reference

#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/random.h>
#include <sys/libkern.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/time.h>

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Macros
#define	ARC4_RESEED_BYTES   65536
#define	ARC4_RESEED_SECONDS   300
#define	ARC4_KEYBYTES   (256 / 8)

Functions
	__FBSDID ("$BSDSUniX$")
static u_int8_t	arc4_randbyte (void)
static __inline void	arc4_swap (u_int8_t *a, u_int8_t *b)
static void	arc4_randomstir (void)
static void	arc4_init (void)
	SYSINIT (arc4_init, SI_SUB_LOCK, SI_ORDER_ANY, arc4_init, NULL)
void	arc4rand (void *ptr, u_int len, int reseed)
uint32_t	arc4random (void)

Variables
int	arc4rand_iniseed_state = ARC4_ENTR_NONE
static u_int8_t	arc4_i
static u_int8_t	arc4_j
static int	arc4_numruns = 0
static u_int8_t	arc4_sbox [256]
static time_t	arc4_t_reseed
static struct mtx	arc4_mtx

Macro Definition Documentation

#define ARC4_KEYBYTES   (256 / 8)

Definition at line 25 of file arc4random.c.

Referenced by arc4_randomstir().

#define ARC4_RESEED_BYTES   65536

Definition at line 23 of file arc4random.c.

Referenced by arc4rand().

#define ARC4_RESEED_SECONDS   300

Definition at line 24 of file arc4random.c.

Referenced by arc4_randomstir().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

static void arc4_init ( void  )

static

Definition at line 94 of file arc4random.c.

References arc4_i, arc4_j, arc4_mtx, arc4_sbox, and arc4_t_reseed.

static u_int8_t arc4_randbyte ( void  )

static

Definition at line 112 of file arc4random.c.

References arc4_i, arc4_j, arc4_sbox, and arc4_swap().

Referenced by arc4_randomstir(), and arc4rand().

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static void arc4_randomstir ( void  )

static

Definition at line 51 of file arc4random.c.

References arc4_i, arc4_j, ARC4_KEYBYTES, arc4_mtx, arc4_numruns, arc4_randbyte(), ARC4_RESEED_SECONDS, arc4_sbox, arc4_swap(), and arc4_t_reseed.

Referenced by arc4rand().

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static __inline void arc4_swap ( u_int8_t *  a, u_int8_t *  b  )

static

Definition at line 38 of file arc4random.c.

References c.

Referenced by arc4_randbyte(), and arc4_randomstir().

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void arc4rand	(	void *	ptr,
		u_int	len,
		int	reseed
	)

Definition at line 129 of file arc4random.c.

References arc4_mtx, arc4_numruns, arc4_randbyte(), arc4_randomstir(), ARC4_RESEED_BYTES, arc4_t_reseed, and arc4rand_iniseed_state.

Referenced by arc4random().

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uint32_t arc4random

(

void

)

Definition at line 150 of file arc4random.c.

References arc4rand().

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SYSINIT	(	arc4_init	,
		SI_SUB_LOCK	,
		SI_ORDER_ANY	,
		arc4_init	,
		NULL
	)

Variable Documentation

u_int8_t arc4_i

static

Definition at line 29 of file arc4random.c.

Referenced by arc4_init(), arc4_randbyte(), and arc4_randomstir().

u_int8_t arc4_j

static

Definition at line 29 of file arc4random.c.

Referenced by arc4_init(), arc4_randbyte(), and arc4_randomstir().

struct mtx arc4_mtx

static

Definition at line 33 of file arc4random.c.

Referenced by arc4_init(), arc4_randomstir(), and arc4rand().

int arc4_numruns = 0

static

Definition at line 30 of file arc4random.c.

Referenced by arc4_randomstir(), and arc4rand().

u_int8_t arc4_sbox[256]

static

Definition at line 31 of file arc4random.c.

Referenced by arc4_init(), arc4_randbyte(), and arc4_randomstir().

time_t arc4_t_reseed

static

Definition at line 32 of file arc4random.c.

Referenced by arc4_init(), arc4_randomstir(), and arc4rand().

int arc4rand_iniseed_state = ARC4_ENTR_NONE

Definition at line 27 of file arc4random.c.

Referenced by arc4rand().