[hcoop/debian/courier-authlib.git] / libs / random128 / random128binary.c

/*
** Copyright 2002 Double Precision, Inc.
** See COPYING for distribution information.
*/

#if	HAVE_CONFIG_H
#include	"config.h"
#endif

#if	HAVE_UNISTD_H
#include	<unistd.h>
#endif
#include	<ctype.h>
#include	<string.h>
#include	"random128.h"


static int nyb(char c)
{
	static const char xdigit[]="0123456789ABCDEF";

	const char *p=strchr(xdigit, c);

	if (p)
		return (p-xdigit);
	return 0;
}

void random128_binary(random128binbuf *bytes)
{
	char randombuf[ 128 / 8 * 2 + 1];
	int i;

	strcpy(randombuf, random128());

	for (i=0; i<128/8; i++)
		(*bytes)[i]=(nyb(randombuf[i*2]) << 4) | nyb(randombuf[i*2+1]);
}
Commit	Line	Data
d9898ee8	1	/*
	2	** Copyright 2002 Double Precision, Inc.
	3	** See COPYING for distribution information.
	4	*/
	5
	6	#if HAVE_CONFIG_H
	7	#include "config.h"
	8	#endif
	9
	10	#if HAVE_UNISTD_H
	11	#include <unistd.h>
	12	#endif
	13	#include <ctype.h>
	14	#include <string.h>
	15	#include "random128.h"
	16
d9898ee8	17
	18	static int nyb(char c)
	19	{
	20	static const char xdigit[]="0123456789ABCDEF";
	21
	22	const char *p=strchr(xdigit, c);
	23
	24	if (p)
	25	return (p-xdigit);
	26	return 0;
	27	}
	28
	29	void random128_binary(random128binbuf *bytes)
	30	{
	31	char randombuf[ 128 / 8 * 2 + 1];
	32	int i;
	33
	34	strcpy(randombuf, random128());
	35
	36	for (i=0; i<128/8; i++)
	37	(bytes)[i]=(nyb(randombuf[i2]) << 4) \| nyb(randombuf[i*2+1]);
	38	}