Gecko [ beacons-mine.com ]

Name	Size	Permission	Date
aes.h	1.05 KB	-rw-r--r--	2025-11-06 13:15
app.h	10.23 KB	-rw-r--r--	2025-11-06 13:15
assertions.h	2.84 KB	-rw-r--r--	2025-11-06 13:15
atomic.h	4.07 KB	-rw-r--r--	2025-11-06 13:15
backtrace.h	3.8 KB	-rw-r--r--	2025-11-06 13:15
base32.h	4.35 KB	-rw-r--r--	2025-11-06 13:15
base64.h	2.8 KB	-rw-r--r--	2025-11-06 13:15
bind9.h	830 B	-rw-r--r--	2025-11-06 13:15
boolean.h	594 B	-rw-r--r--	2025-11-06 13:15
buffer.h	25.65 KB	-rw-r--r--	2025-11-06 13:15
bufferlist.h	1.42 KB	-rw-r--r--	2025-11-06 13:15
cmocka.h	1.35 KB	-rw-r--r--	2025-11-06 13:15
commandline.h	1.67 KB	-rw-r--r--	2025-11-06 13:15
condition.h	1.44 KB	-rw-r--r--	2025-11-06 13:15
counter.h	1.88 KB	-rw-r--r--	2025-11-06 13:15
crc64.h	998 B	-rw-r--r--	2025-11-06 13:15
deprecated.h	623 B	-rw-r--r--	2025-11-06 13:15
dir.h	1.56 KB	-rw-r--r--	2025-11-06 13:15
endian.h	4.67 KB	-rw-r--r--	2025-11-06 13:15
entropy.h	10.13 KB	-rw-r--r--	2025-11-06 13:15
errno.h	659 B	-rw-r--r--	2025-11-06 13:15
errno2result.h	902 B	-rw-r--r--	2025-11-06 13:15
error.h	1.4 KB	-rw-r--r--	2025-11-06 13:15
event.h	2.98 KB	-rw-r--r--	2025-11-06 13:15
eventclass.h	1.35 KB	-rw-r--r--	2025-11-06 13:15
file.h	11.39 KB	-rw-r--r--	2025-11-06 13:15
formatcheck.h	893 B	-rw-r--r--	2025-11-06 13:15
fsaccess.h	7.27 KB	-rw-r--r--	2025-11-06 13:15
hash.h	7.48 KB	-rw-r--r--	2025-11-06 13:15
heap.h	5.14 KB	-rw-r--r--	2025-11-06 13:15
hex.h	2.74 KB	-rw-r--r--	2025-11-06 13:15
hmacmd5.h	1.75 KB	-rw-r--r--	2025-11-06 13:15
hmacsha.h	4.41 KB	-rw-r--r--	2025-11-06 13:15
ht.h	4.29 KB	-rw-r--r--	2025-11-06 13:15
httpd.h	2.26 KB	-rw-r--r--	2025-11-06 13:15
int.h	1.06 KB	-rw-r--r--	2025-11-06 13:15
interfaceiter.h	3.05 KB	-rw-r--r--	2025-11-06 13:15
iterated_hash.h	1.02 KB	-rw-r--r--	2025-11-06 13:15
json.h	1.42 KB	-rw-r--r--	2025-11-06 13:15
keyboard.h	989 B	-rw-r--r--	2025-11-06 13:15
lang.h	637 B	-rw-r--r--	2025-11-06 13:15
lex.h	9.54 KB	-rw-r--r--	2025-11-06 13:15
lfsr.h	2.89 KB	-rw-r--r--	2025-11-06 13:15
lib.h	1.04 KB	-rw-r--r--	2025-11-06 13:15
likely.h	818 B	-rw-r--r--	2025-11-06 13:15
list.h	5.62 KB	-rw-r--r--	2025-11-06 13:15
log.h	28.06 KB	-rw-r--r--	2025-11-06 13:15
magic.h	994 B	-rw-r--r--	2025-11-06 13:15
md5.h	2.32 KB	-rw-r--r--	2025-11-06 13:15
mem.h	20.62 KB	-rw-r--r--	2025-11-06 13:15
meminfo.h	710 B	-rw-r--r--	2025-11-06 13:15
msgcat.h	2.66 KB	-rw-r--r--	2025-11-06 13:15
msgs.h	8.22 KB	-rw-r--r--	2025-11-06 13:15
mutex.h	3.44 KB	-rw-r--r--	2025-11-06 13:15
mutexblock.h	1.34 KB	-rw-r--r--	2025-11-06 13:15
net.h	10.29 KB	-rw-r--r--	2025-11-06 13:15
netaddr.h	4.48 KB	-rw-r--r--	2025-11-06 13:15
netdb.h	863 B	-rw-r--r--	2025-11-06 13:15
netscope.h	967 B	-rw-r--r--	2025-11-06 13:15
offset.h	700 B	-rw-r--r--	2025-11-06 13:15
once.h	983 B	-rw-r--r--	2025-11-06 13:15
ondestroy.h	2.73 KB	-rw-r--r--	2025-11-06 13:15
os.h	671 B	-rw-r--r--	2025-11-06 13:15
parseint.h	1.51 KB	-rw-r--r--	2025-11-06 13:15
platform.h	9.49 KB	-rw-r--r--	2025-11-06 13:15
pool.h	3.42 KB	-rw-r--r--	2025-11-06 13:15
portset.h	3.22 KB	-rw-r--r--	2025-11-06 13:15
print.h	2.42 KB	-rw-r--r--	2025-11-06 13:15
queue.h	5.08 KB	-rw-r--r--	2025-11-06 13:15
quota.h	2.38 KB	-rw-r--r--	2025-11-06 13:15
radix.h	6.34 KB	-rw-r--r--	2025-11-06 13:15
random.h	3.5 KB	-rw-r--r--	2025-11-06 13:15
ratelimiter.h	3.42 KB	-rw-r--r--	2025-11-06 13:15
refcount.h	8 KB	-rw-r--r--	2025-11-06 13:15
regex.h	767 B	-rw-r--r--	2025-11-06 13:15
region.h	1.99 KB	-rw-r--r--	2025-11-06 13:15
resource.h	2.79 KB	-rw-r--r--	2025-11-06 13:15
result.h	4.87 KB	-rw-r--r--	2025-11-06 13:15
resultclass.h	1.56 KB	-rw-r--r--	2025-11-06 13:15
rwlock.h	3.72 KB	-rw-r--r--	2025-11-06 13:15
safe.h	1.32 KB	-rw-r--r--	2025-11-06 13:15
serial.h	1.34 KB	-rw-r--r--	2025-11-06 13:15
sha1.h	1.52 KB	-rw-r--r--	2025-11-06 13:15
sha2.h	5.6 KB	-rw-r--r--	2025-11-06 13:15
siphash.h	734 B	-rw-r--r--	2025-11-06 13:15
sockaddr.h	5.9 KB	-rw-r--r--	2025-11-06 13:15
socket.h	35.8 KB	-rw-r--r--	2025-11-06 13:15
stat.h	806 B	-rw-r--r--	2025-11-06 13:15
stats.h	3.62 KB	-rw-r--r--	2025-11-06 13:15
stdatomic.h	5.13 KB	-rw-r--r--	2025-11-06 13:15
stdio.h	1.75 KB	-rw-r--r--	2025-11-06 13:15
stdlib.h	704 B	-rw-r--r--	2025-11-06 13:15
stdtime.h	1.04 KB	-rw-r--r--	2025-11-06 13:15
strerror.h	777 B	-rw-r--r--	2025-11-06 13:15
string.h	5.88 KB	-rw-r--r--	2025-11-06 13:15
symtab.h	4.22 KB	-rw-r--r--	2025-11-06 13:15
syslog.h	844 B	-rw-r--r--	2025-11-06 13:15
task.h	21.04 KB	-rw-r--r--	2025-11-06 13:15
taskpool.h	3.62 KB	-rw-r--r--	2025-11-06 13:15
thread.h	1.47 KB	-rw-r--r--	2025-11-06 13:15
time.h	8.67 KB	-rw-r--r--	2025-11-06 13:15
timer.h	10.54 KB	-rw-r--r--	2025-11-06 13:15
tm.h	895 B	-rw-r--r--	2025-11-06 13:15
types.h	5.64 KB	-rw-r--r--	2025-11-06 13:15
utf8.h	928 B	-rw-r--r--	2025-11-06 13:15
util.h	10.29 KB	-rw-r--r--	2025-11-06 13:15
version.h	689 B	-rw-r--r--	2025-11-06 13:15
xml.h	1.07 KB	-rw-r--r--	2025-11-06 13:15

Rename

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef ISC_LFSR_H
#define ISC_LFSR_H 1

/*! \file isc/lfsr.h */

#include <inttypes.h>

#include <isc/lang.h>
#include <isc/types.h>

typedef struct isc_lfsr isc_lfsr_t;

/*%
 * This function is called when reseeding is needed.  It is allowed to
 * modify any state in the LFSR in any way it sees fit OTHER THAN "bits".
 *
 * It MUST set "count" to a new value or the lfsr will never reseed again.
 *
 * Also, a reseed will never occur in the middle of an extraction.  This
 * is purely an optimization, and is probably what one would want.
 */
typedef void (*isc_lfsrreseed_t)(isc_lfsr_t *, void *);

/*%
 * The members of this structure can be used by the application, but care
 * needs to be taken to not change state once the lfsr is in operation.
 */
struct isc_lfsr {
	uint32_t		state;	/*%< previous state */
	unsigned int		bits;	/*%< length */
	uint32_t		tap;	/*%< bit taps */
	unsigned int		count;	/*%< reseed count (in BITS!) */
	isc_lfsrreseed_t	reseed;	/*%< reseed function */
	void		       *arg;	/*%< reseed function argument */
};

ISC_LANG_BEGINDECLS

void
isc_lfsr_init(isc_lfsr_t *lfsr, uint32_t state, unsigned int bits,
		   uint32_t tap, unsigned int count,
		   isc_lfsrreseed_t reseed, void *arg);
/*%<
 * Initialize an LFSR.
 *
 * Note:
 *
 *\li	Putting untrusted values into this function will cause the LFSR to
 *	generate (perhaps) non-maximal length sequences.
 *
 * Requires:
 *
 *\li	lfsr != NULL
 *
 *\li	8 <= bits <= 32
 *
 *\li	tap != 0
 */

void
isc_lfsr_generate(isc_lfsr_t *lfsr, void *data, unsigned int count);
/*%<
 * Returns "count" bytes of data from the LFSR.
 *
 * Requires:
 *
 *\li	lfsr be valid.
 *
 *\li	data != NULL.
 *
 *\li	count > 0.
 */

void
isc_lfsr_skip(isc_lfsr_t *lfsr, unsigned int skip);
/*%<
 * Skip "skip" states.
 *
 * Requires:
 *
 *\li	lfsr be valid.
 */

uint32_t
isc_lfsr_generate32(isc_lfsr_t *lfsr1, isc_lfsr_t *lfsr2);
/*%<
 * Given two LFSRs, use the current state from each to skip entries in the
 * other.  The next states are then xor'd together and returned.
 *
 * WARNING:
 *
 *\li	This function is used only for very, very low security data, such
 *	as DNS message IDs where it is desired to have an unpredictable
 *	stream of bytes that are harder to predict than a simple flooding
 *	attack.
 *
 * Notes:
 *
 *\li	Since the current state from each of the LFSRs is used to skip
 *	state in the other, it is important that no state be leaked
 *	from either LFSR.
 *
 * Requires:
 *
 *\li	lfsr1 and lfsr2 be valid.
 *
 *\li	1 <= skipbits <= 31
 */

ISC_LANG_ENDDECLS

#endif /* ISC_LFSR_H */