/**
* {@inheritDoc}
* @see \Mdanter\Ecc\RandomNumberGeneratorInterface::generate()
*/
public function generate($max)
{
$random = gmp_strval(gmp_random());
$small_rand = rand();
while (gmp_cmp($random, $max) > 0) {
$random = gmp_div($random, $small_rand, GMP_ROUND_ZERO);
}
return gmp_strval($random);
}
function randomBytes($length = 16, $secure = true, $raw = true, $startEntropy = "", &$rounds = 0, &$drop = 0)
{
static $lastRandom = "";
$output = "";
$length = abs((int) $length);
$secureValue = "";
$rounds = 0;
$drop = 0;
while (!isset($output[$length - 1])) {
//some entropy, but works ^^
$weakEntropy = array(is_array($startEntropy) ? implode($startEntropy) : $startEntropy, serialize(stat(__FILE__)), __DIR__, PHP_OS, microtime(), (string) lcg_value(), (string) PHP_MAXPATHLEN, PHP_SAPI, (string) PHP_INT_MAX . "." . PHP_INT_SIZE, serialize($_SERVER), serialize(get_defined_constants()), get_current_user(), serialize(ini_get_all()), (string) memory_get_usage() . "." . memory_get_peak_usage(), php_uname(), phpversion(), extension_loaded("gmp") ? gmp_strval(gmp_random(4)) : microtime(), zend_version(), (string) getmypid(), (string) getmyuid(), (string) mt_rand(), (string) getmyinode(), (string) getmygid(), (string) rand(), function_exists("zend_thread_id") ? (string) zend_thread_id() : microtime(), var_export(@get_browser(), true), function_exists("getrusage") ? @implode(getrusage()) : microtime(), function_exists("sys_getloadavg") ? @implode(sys_getloadavg()) : microtime(), serialize(get_loaded_extensions()), sys_get_temp_dir(), (string) disk_free_space("."), (string) disk_total_space("."), uniqid(microtime(), true), file_exists("/proc/cpuinfo") ? file_get_contents("/proc/cpuinfo") : microtime());
shuffle($weakEntropy);
$value = hash("sha512", implode($weakEntropy), true);
$lastRandom .= $value;
foreach ($weakEntropy as $k => $c) {
//mixing entropy values with XOR and hash randomness extractor
$value ^= hash("sha256", $c . microtime() . $k, true) . hash("sha256", mt_rand() . microtime() . $k . $c, true);
$value ^= hash("sha512", (string) lcg_value() . $c . microtime() . $k, true);
}
unset($weakEntropy);
if ($secure === true) {
$strongEntropyValues = array(is_array($startEntropy) ? hash("sha512", $startEntropy[($rounds + $drop) % count($startEntropy)], true) : hash("sha512", $startEntropy, true), file_exists("/dev/urandom") ? fread(fopen("/dev/urandom", "rb"), 64) : str_repeat("", 64), (function_exists("openssl_random_pseudo_bytes") and version_compare(PHP_VERSION, "5.3.4", ">=")) ? openssl_random_pseudo_bytes(64) : str_repeat("", 64), function_exists("mcrypt_create_iv") ? mcrypt_create_iv(64, MCRYPT_DEV_URANDOM) : str_repeat("", 64), $value);
$strongEntropy = array_pop($strongEntropyValues);
foreach ($strongEntropyValues as $value) {
$strongEntropy = $strongEntropy ^ $value;
}
$value = "";
//Von Neumann randomness extractor, increases entropy
$bitcnt = 0;
for ($j = 0; $j < 64; ++$j) {
$a = ord($strongEntropy[$j]);
for ($i = 0; $i < 8; $i += 2) {
$b = ($a & 1 << $i) > 0 ? 1 : 0;
if ($b != (($a & 1 << $i + 1) > 0 ? 1 : 0)) {
$secureValue |= $b << $bitcnt;
if ($bitcnt == 7) {
$value .= chr($secureValue);
$secureValue = 0;
$bitcnt = 0;
} else {
++$bitcnt;
}
++$drop;
} else {
$drop += 2;
}
}
}
}
$output .= substr($value, 0, min($length - strlen($output), $length));
unset($value);
++$rounds;
}
$lastRandom = hash("sha512", $lastRandom, true);
return $raw === false ? bin2hex($output) : $output;
}
public static function generateNewS()
{
// S is a random 32 byte array
// gmp_random generates 16 bit per limiter; 32byte/16bit = 32*8/16 = 16
$random = gmp_random(16);
$random_str = gmp_strval($random, 16);
$s_str = sha1($random_str);
// sha1 is just 20 bytes long, add 12 more bytes = 24 (hexencoded)
$s_str .= substr($random_str, 0, 24);
return $s_str;
}
public static function gmp_random($n)
{
if (extension_loaded('gmp') && USE_EXT == 'GMP') {
$random = gmp_strval(gmp_random());
$small_rand = rand();
while (gmp_cmp($random, $n) > 0) {
$random = gmp_div($random, $small_rand, GMP_ROUND_ZERO);
}
return gmp_strval($random);
} else {
throw new Exception("PLEASE INSTALL GMP");
}
}
/**
* Large random number generator
*
* @param integer $powerOfTwo
* @return string
*/
public function random($powerOfTwo)
{
$prefix = 'P';
if (extension_loaded('bcmath')) {
OauthHelper::log($prefix . OauthHelper::bcrandom(1, bcpow(2, $powerOfTwo)));
return $prefix . OauthHelper::bcrandom(1, bcpow(2, $powerOfTwo));
}
if (extension_loaded('gmp')) {
$limbOp = round($powerOfTwo / 32);
OauthHelper::log($prefix . gmp_strval(gmp_random($limbOp)));
return $prefix . gmp_strval(gmp_random($limbOp));
}
return $prefix . rand(0, pow(2, $powerOfTwo));
}
function _getRandomString($length)
{
assert('$length >= 0');
$rv = '';
$len = 0;
while ($len < $length) {
$a = unpack('C*', pack('L2', gmp_random(2)));
// untested
for ($i = 1; $i < 9; ++$i) {
$rv .= chr($a[$i] & 0xff);
if (++$len == $length) {
return $rv;
}
}
}
return $rv;
}
/**
* Constructor
*
* @param String Private key, if not included one shall be generated
*/
function Diffie_Hellman_GMP($privkey = "")
{
if (empty($privkey)) {
$privkey = gmp_random(5);
}
$this->privatekey = $privkey;
}
function random($minval)
{
if (function_exists('gmp_random')) {
$limb_cnt = 31;
do {
$rdm = gmp_random($limb_cnt--);
} while (gmp_cmp($minval, $rdm) > 0);
return gmp_strval($rdm);
} else {
// FIXME: does not honor minval
return rand(0, getrandmax());
}
}
#echo "New dIC : $deviceID\n";
$changed = $dbHandle->exec("UPDATE {$dbTable} SET {$dbIDCol} = " . $dbHandle->quote($deviceID) . " WHERE {$dbEmailCol} = " . $email . " AND {$dbKeyCol} = " . $cdkey);
#echo "Changed rows : $changed\n";
$cdKeyResponse = $cdKeyPositive;
} else {
$cdKeyResponse = $cdKeyNegative;
}
}
}
if (!file_exists($client_pub_file)) {
exit("Decoder : client keys are missing!");
}
$cpb = explode(" ", file_get_contents($client_pub_file));
$cp = gmp_init($cpb[0]);
$cg = gmp_init($cpb[1]);
$cy = gmp_init($cpb[2]);
$cdKeyResponse = mb_convert_encoding($cdKeyResponse, "UTF-8");
$cdKeyCode = "";
for ($i = 0; $i < strlen($cdKeyResponse); $i++) {
$charCode = unpack("N", mb_convert_encoding($cdKeyResponse[$i], "UCS-4BE", "UTF-8"));
$cc = decbin(reset($charCode));
while (strlen($cc) < 8) {
$cc = "0" . $cc;
}
$cdKeyCode = $cdKeyCode . $cc;
}
$cdKeyCode = gmp_init($cdKeyCode, 2);
$cdKeyCodeK = gmp_add(gmp_random(31), "2");
$cdKeyCodeA = gmp_powm($cg, $cdKeyCodeK, $cp);
$cdKeyCodeB = gmp_mod(gmp_mul(gmp_powm($cy, $cdKeyCodeK, $cp), $cdKeyCode), $cp);
echo gmp_strval($cdKeyCodeA) . " " . gmp_strval($cdKeyCodeB);
function __construct($I, $P)
{
parent::__construct($I, $P);
$this->a = gmp_random();
$this->A = gmp_strval(gmp_powm($this->g, $this->a, $this->N), 16);
}
/**
* This method returns a random number with the range of x and y.
*
* @access public
* @static
* @param IInteger\Type $x the min operand
* @param IInt32\Type $y the max operand
* @return IInteger\Type the result
*/
public static function random(IInteger\Type $x = null, IInt32\Type $y = null) : IInteger\Type
{
return IInteger\Type::box(gmp_strval(gmp_random(IInt32\Module::nvl($y, IInt32\Type::one())->unbox())));
}
function generatePrivate()
{
return gmp_random(60);
}
/**
* associate
*
* The Relying Party and the OP establish an association -- a shared secret
* established using Diffie-Hellman Key Exchange [RFC2631].
*
* @see 8. Establishing Associations
*/
protected function associate()
{
/**
* check if we have an association in the cache
* @return array Association
*/
if ($association = $this->cache($this->provider)) {
return $association;
}
$private_key = gmp_random(16);
$public_key = base64_encode($this->btwocEncode(gmp_strval(gmp_powm(self::OPENID_DH_GEN, $private_key, self::OPENID_DH_MODULUS))));
/**
* @see 8.1.1. Common Request Parameters
*/
$params = array('openid.ns' => self::OPENID_NS_2_0, 'openid.mode' => 'associate', 'openid.assoc_type' => 'HMAC-SHA256', 'openid.session_type' => 'DH-SHA256', 'openid.dh_consumer_public' => $public_key);
if ($this->request($this->provider, false, 'POST', $params)) {
if (isset($this->headers['dh_server_public'], $this->headers['enc_mac_key'])) {
$dh_server_public = base64_decode($this->headers['dh_server_public']);
$enc_mac_key = $this->headers['enc_mac_key'];
$ZZ = $this->btwocEncode(gmp_strval(gmp_powm($this->btwocDecode($dh_server_public), $private_key, self::OPENID_DH_MODULUS)));
/**
* decrypt & return the mac_key (shared secret)
*/
$secret = $this->openidXOR(hash('sha256', $ZZ, true), base64_decode($enc_mac_key));
/**
* store association in cache
*/
if ($this->cache($this->provider, json_encode(array_merge($this->headers, array('op_endpoint' => $this->provider, 'mac_key' => base64_encode($secret)))), $this->headers['expires_in'])) {
return array('assoc_handle' => $this->headers['assoc_handle']);
} else {
return false;
}
} else {
return false;
}
} else {
return false;
}
}
<?php
var_dump(gmp_strval(gmp_random()));
var_dump(gmp_strval(gmp_random(-1)));
var_dump(gmp_strval(gmp_random(0)));
var_dump(gmp_strval(gmp_random(10)));
var_dump(gmp_strval(gmp_random("-10")));
var_dump(gmp_strval(gmp_random(-10)));
var_dump(gmp_random(array()));
var_dump(gmp_random(array(), 1));
var_dump(gmp_random(""));
var_dump(gmp_random("test"));
echo "Done\n";
public static function nextPrimeBetween($lo = self::LO_MAX, $hi = self::HI_MAX)
{
# Sanitize PHP Bullfrogs
$lo = preg_replace("[^0-9]", '', "{$lo}");
$hi = preg_replace("[^0-9]", '', "{$hi}");
if ($lo == $hi) {
return $lo;
} else {
if ($lo < $hi || $hi > $lo) {
# Swappish Sanity
$t = $lo;
$lo = $hi;
$hi = $t;
}
}
# Still unused :)
if ($lo < self::LO_MAX || $hi > self::HI_MAX) {
# Your prime is not in range!
return self::NO_NO_NOOOO;
}
# Check how cool you are
switch (GWF_Random::rand(0, 4)) {
case 0:
return self::NO_PRIME;
case 1:
return self::NO_CLUE;
# case 2: return self::NO_NEO;
# case 2: return self::NO_NEO;
case 3:
return self::NO_NO_NO;
case 4:
case 2:
# Good Enough :)
$the_value = '1';
while ($the_value < self::HI_MAX) {
$the_value = gmp_strval(gmp_nextprime(gmp_random(2)));
}
return $the_value;
}
}
function __construct()
{
$this->N = gmp_init('ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff', 16);
$this->badb = gmp_random();
$this->badB = gmp_strval(gmp_powm('2', $this->badb, $this->N), 16);
}
