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📄 Makefile.am(3.27 KB)
📄 Makefile.in(105.83 KB)
📄 README(272 B)
📄 a_md5encrypt.c(6.76 KB)
📄 adjtime.c(10.29 KB)
📄 adjtimex.c(334 B)
📄 atoint.c(801 B)
📄 atolfp.c(1.88 KB)
📄 atouint.c(885 B)
📄 audio.c(13.09 KB)
📄 authkeys.c(19.92 KB)
📄 authreadkeys.c(9.06 KB)
📄 authusekey.c(748 B)
📄 bsd_strerror.c(1.35 KB)
📄 buftvtots.c(643 B)
📄 caljulian.c(891 B)
📄 caltontp.c(2.25 KB)
📄 calyearstart.c(2.1 KB)
📄 clocktime.c(4.49 KB)
📄 clocktypes.c(3.69 KB)
📄 decodenetnum.c(3.93 KB)
📄 dofptoa.c(2.19 KB)
📄 dolfptoa.c(3.14 KB)
📄 emalloc.c(3.4 KB)
📄 findconfig.c(1.46 KB)
📄 getopt.c(2.21 KB)
📄 hextoint.c(673 B)
📄 hextolfp.c(1.35 KB)
📄 humandate.c(1.1 KB)
📄 icom.c(4.22 KB)
📄 iosignal.c(12.27 KB)
📄 is_ip_address.c(2.02 KB)
📄 lib_strbuf.c(633 B)
📄 libssl_compat.c(6.13 KB)
📄 machines.c(13.05 KB)
📄 mktime.c(8.29 KB)
📄 modetoa.c(507 B)
📄 mstolfp.c(2.01 KB)
📄 msyslog.c(12.67 KB)
📄 netof.c(1.17 KB)
📄 ntp_calendar.c(58.49 KB)
📄 ntp_calgps.c(15.73 KB)
📄 ntp_crypto_rnd.c(2.11 KB)
📄 ntp_intres.c(28.64 KB)
📄 ntp_libopts.c(1.27 KB)
📄 ntp_lineedit.c(3.88 KB)
📄 ntp_random.c(17.63 KB)
📄 ntp_rfc2553.c(14.85 KB)
📄 ntp_worker.c(7.21 KB)
📄 numtoa.c(963 B)
📄 numtohost.c(908 B)
📄 octtoint.c(578 B)
📄 prettydate.c(5.53 KB)
📄 recvbuff.c(7.3 KB)
📄 refidsmear.c(1.05 KB)
📄 refnumtoa.c(673 B)
📄 snprintf.c(52.56 KB)
📄 socket.c(4.88 KB)
📄 socktoa.c(2.88 KB)
📄 socktohost.c(2.54 KB)
📄 ssl_init.c(5.09 KB)
📄 statestr.c(11.4 KB)
📄 strdup.c(854 B)
📄 strl_obsd.c(3.65 KB)
📄 syssignal.c(2.69 KB)
📄 systime.c(17.51 KB)
📄 systime_s.c(33 B)
📄 timespecops.c(4.27 KB)
📄 timetoa.c(2.75 KB)
📄 timevalops.c(12.97 KB)
📄 timexsup.c(1.17 KB)
📄 uglydate.c(958 B)
📄 vint64ops.c(5.1 KB)
📄 work_fork.c(12.73 KB)
📄 work_thread.c(22.88 KB)
📄 xsbprintf.c(2.06 KB)
📄 ymd2yd.c(582 B)

Editing: ntp_crypto_rnd.c

/*
 * Crypto-quality random number functions
 *
 * Author: Harlan Stenn, 2014
 *
 * This file is Copyright (c) 2014 by Network Time Foundation.
 * BSD terms apply: see the file COPYRIGHT in the distribution root for details.
 */

#include "config.h"
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdio.h>

#include <l_stdlib.h>
#include <ntp_random.h>
#include "safecast.h"

#ifdef USE_OPENSSL_CRYPTO_RAND
#include <openssl/err.h>
#include <openssl/rand.h>

int crypto_rand_init = 0;
#else

# ifndef HAVE_ARC4RANDOM_BUF
static void
arc4random_buf(void *buf, size_t nbytes);

void
evutil_secure_rng_get_bytes(void *buf, size_t nbytes);

static void
arc4random_buf(void *buf, size_t nbytes)
{
	evutil_secure_rng_get_bytes(buf, nbytes);
	return;
}
# endif
#endif

/*
 * As of late 2014, here's how we plan to provide cryptographic-quality
 * random numbers:
 * 
 * - If we are building with OpenSSL, use RAND_poll() and RAND_bytes().
 * - Otherwise, use arc4random().
 * 
 * Use of arc4random() can be forced using configure --disable-openssl-random
 *
 * We can count on arc4random existing, thru the OS or thru libevent.
 * The quality of arc4random depends on the implementor.
 * 
 * RAND_poll() doesn't show up until XXX.  If it's not present, we
 * need to either provide our own or use arc4random().
 */

/*
 * ntp_crypto_srandom:
 *
 * Initialize the random number generator, if needed by the underlying
 * crypto random number generation mechanism.
 */

void
ntp_crypto_srandom(
	void
	)
{
#ifdef USE_OPENSSL_CRYPTO_RAND
	if (!crypto_rand_init) {
		RAND_poll();
		crypto_rand_init = 1;
	}
#else
	/* No initialization needed for arc4random() */
#endif
}

/*
 * ntp_crypto_random_buf:
 *
 * Returns 0 on success, -1 on error.
 */
int
ntp_crypto_random_buf(
	void *buf,
	size_t nbytes
	)
{
#ifdef USE_OPENSSL_CRYPTO_RAND
	int rc;

rc = RAND_bytes(buf, size2int_chk(nbytes));
	if (1 != rc) {
		unsigned long err;
		char *err_str;

err = ERR_get_error();
		err_str = ERR_error_string(err, NULL);
		/* XXX: Log the error */
		(void)&err_str;

return -1;
	}
	return 0;
#else
	arc4random_buf(buf, nbytes);
	return 0;
#endif
}

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Editing: ntp_crypto_rnd.c

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