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PHP Math_BigInteger::setRandomGenerator方法代码示例

本文整理汇总了PHP中Math_BigInteger::setRandomGenerator方法的典型用法代码示例。如果您正苦于以下问题:PHP Math_BigInteger::setRandomGenerator方法的具体用法?PHP Math_BigInteger::setRandomGenerator怎么用?PHP Math_BigInteger::setRandomGenerator使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Math_BigInteger的用法示例。


在下文中一共展示了Math_BigInteger::setRandomGenerator方法的4个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的PHP代码示例。

示例1: array


//.........这里部分代码省略.........
     if ($i == count($kex_algorithms)) {
         user_error('No compatible key exchange algorithms found', E_USER_NOTICE);
         return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
     }
     switch ($kex_algorithms[$i]) {
         // see http://tools.ietf.org/html/rfc2409#section-6.2 and
         // http://tools.ietf.org/html/rfc2412, appendex E
         case 'diffie-hellman-group1-sha1':
             $p = pack('H256', 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' . '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF');
             $keyLength = $keyLength < 160 ? $keyLength : 160;
             $hash = 'sha1';
             break;
             // see http://tools.ietf.org/html/rfc3526#section-3
         // see http://tools.ietf.org/html/rfc3526#section-3
         case 'diffie-hellman-group14-sha1':
             $p = pack('H512', 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' . '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' . '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' . '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' . 'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' . '3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF');
             $keyLength = $keyLength < 160 ? $keyLength : 160;
             $hash = 'sha1';
     }
     $p = new Math_BigInteger($p, 256);
     //$q = $p->bitwise_rightShift(1);
     /* To increase the speed of the key exchange, both client and server may
                reduce the size of their private exponents.  It should be at least
                twice as long as the key material that is generated from the shared
                secret.  For more details, see the paper by van Oorschot and Wiener
                [VAN-OORSCHOT].
     
                -- http://tools.ietf.org/html/rfc4419#section-6.2 */
     $q = new Math_BigInteger(1);
     $q = $q->bitwise_leftShift(2 * $keyLength);
     $q = $q->subtract(new Math_BigInteger(1));
     $g = new Math_BigInteger(2);
     $x = new Math_BigInteger();
     $x->setRandomGenerator('crypt_random');
     $x = $x->random(new Math_BigInteger(1), $q);
     $e = $g->modPow($x, $p);
     $eBytes = $e->toBytes(true);
     $data = pack('CNa*', NET_SSH2_MSG_KEXDH_INIT, strlen($eBytes), $eBytes);
     if (!$this->_send_binary_packet($data)) {
         user_error('Connection closed by server', E_USER_NOTICE);
         return false;
     }
     $response = $this->_get_binary_packet();
     if ($response === false) {
         user_error('Connection closed by server', E_USER_NOTICE);
         return false;
     }
     extract(unpack('Ctype', $this->_string_shift($response, 1)));
     if ($type != NET_SSH2_MSG_KEXDH_REPLY) {
         user_error('Expected SSH_MSG_KEXDH_REPLY', E_USER_NOTICE);
         return false;
     }
     $temp = unpack('Nlength', $this->_string_shift($response, 4));
     $this->server_public_host_key = $server_public_host_key = $this->_string_shift($response, $temp['length']);
     $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
     $public_key_format = $this->_string_shift($server_public_host_key, $temp['length']);
     $temp = unpack('Nlength', $this->_string_shift($response, 4));
     $fBytes = $this->_string_shift($response, $temp['length']);
     $f = new Math_BigInteger($fBytes, -256);
     $temp = unpack('Nlength', $this->_string_shift($response, 4));
     $this->signature = $this->_string_shift($response, $temp['length']);
     $temp = unpack('Nlength', $this->_string_shift($this->signature, 4));
     $this->signature_format = $this->_string_shift($this->signature, $temp['length']);
     $key = $f->modPow($x, $p);
     $keyBytes = $key->toBytes(true);
     $this->exchange_hash = pack('Na*Na*Na*Na*Na*Na*Na*Na*', strlen($this->identifier), $this->identifier, strlen($this->server_identifier), $this->server_identifier, strlen($kexinit_payload_client), $kexinit_payload_client, strlen($kexinit_payload_server), $kexinit_payload_server, strlen($this->server_public_host_key), $this->server_public_host_key, strlen($eBytes), $eBytes, strlen($fBytes), $fBytes, strlen($keyBytes), $keyBytes);
开发者ID:grimsmath,项目名称:lavillafdn,代码行数:67,代码来源:SSH2.php

示例2: array


//.........这里部分代码省略.........
     if ($i == count($kex_algorithms)) {
         user_error('No compatible key exchange algorithms found', E_USER_NOTICE);
         return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
     }
     switch ($kex_algorithms[$i]) {
         // see http://tools.ietf.org/html/rfc2409#section-6.2 and
         // http://tools.ietf.org/html/rfc2412, appendex E
         case 'diffie-hellman-group1-sha1':
             $p = pack('H256', 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' . '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF');
             $keyLength = $keyLength < 160 ? $keyLength : 160;
             $hash = 'sha1';
             break;
             // see http://tools.ietf.org/html/rfc3526#section-3
         // see http://tools.ietf.org/html/rfc3526#section-3
         case 'diffie-hellman-group14-sha1':
             $p = pack('H512', 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' . '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' . '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' . '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' . 'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' . '3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF');
             $keyLength = $keyLength < 160 ? $keyLength : 160;
             $hash = 'sha1';
     }
     $p = new Math_BigInteger($p, 256);
     //$q = $p->bitwise_rightShift(1);
     /* To increase the speed of the key exchange, both client and server may
                reduce the size of their private exponents.  It should be at least
                twice as long as the key material that is generated from the shared
                secret.  For more details, see the paper by van Oorschot and Wiener
                [VAN-OORSCHOT].
     
                -- http://tools.ietf.org/html/rfc4419#section-6.2 */
     $q = new Math_BigInteger(1);
     $q = $q->bitwise_leftShift(2 * $keyLength);
     $q = $q->subtract(new Math_BigInteger(1));
     $g = new Math_BigInteger(2);
     $x = new Math_BigInteger();
     $x->setRandomGenerator('crypt_random');
     $x = $x->random(new Math_BigInteger(1), $q);
     $e = $g->modPow($x, $p);
     $eBytes = $e->toBytes(true);
     $data = pack('CNa*', NET_SSH2_MSG_KEXDH_INIT, strlen($eBytes), $eBytes);
     if (!$this->_send_binary_packet($data)) {
         user_error('Connection closed by server', E_USER_NOTICE);
         return false;
     }
     $response = $this->_get_binary_packet();
     if ($response === false) {
         user_error('Connection closed by server', E_USER_NOTICE);
         return false;
     }
     extract(unpack('Ctype', $this->_string_shift($response, 1)));
     if ($type != NET_SSH2_MSG_KEXDH_REPLY) {
         user_error('Expected SSH_MSG_KEXDH_REPLY', E_USER_NOTICE);
         return false;
     }
     $temp = unpack('Nlength', $this->_string_shift($response, 4));
     $this->server_public_host_key = $server_public_host_key = $this->_string_shift($response, $temp['length']);
     $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
     $public_key_format = $this->_string_shift($server_public_host_key, $temp['length']);
     $temp = unpack('Nlength', $this->_string_shift($response, 4));
     $fBytes = $this->_string_shift($response, $temp['length']);
     $f = new Math_BigInteger($fBytes, -256);
     $temp = unpack('Nlength', $this->_string_shift($response, 4));
     $signature = $this->_string_shift($response, $temp['length']);
     $temp = unpack('Nlength', $this->_string_shift($signature, 4));
     $signature_format = $this->_string_shift($signature, $temp['length']);
     $key = $f->modPow($x, $p);
     $keyBytes = $key->toBytes(true);
     $source = pack('Na*Na*Na*Na*Na*Na*Na*Na*', strlen($this->identifier), $this->identifier, strlen($this->server_identifier), $this->server_identifier, strlen($kexinit_payload_client), $kexinit_payload_client, strlen($kexinit_payload_server), $kexinit_payload_server, strlen($this->server_public_host_key), $this->server_public_host_key, strlen($eBytes), $eBytes, strlen($fBytes), $fBytes, strlen($keyBytes), $keyBytes);
开发者ID:helenadeus,项目名称:s3db.map,代码行数:67,代码来源:SSH2.php

示例3: count

 /**
  * Exponentiate with or without Chinese Remainder Theorem
  *
  * See {@link http://tools.ietf.org/html/rfc3447#section-5.1.1 RFC3447#section-5.1.2}.
  *
  * @access private
  * @param Math_BigInteger $x
  * @return Math_BigInteger
  */
 function _exponentiate($x)
 {
     if (empty($this->primes) || empty($this->coefficients) || empty($this->exponents)) {
         return $x->modPow($this->exponent, $this->modulus);
     }
     $num_primes = count($this->primes);
     if (defined('CRYPT_RSA_DISABLE_BLINDING')) {
         $m_i = array(1 => $x->modPow($this->exponents[1], $this->primes[1]), 2 => $x->modPow($this->exponents[2], $this->primes[2]));
         $h = $m_i[1]->subtract($m_i[2]);
         $h = $h->multiply($this->coefficients[2]);
         list(, $h) = $h->divide($this->primes[1]);
         $m = $m_i[2]->add($h->multiply($this->primes[2]));
         $r = $this->primes[1];
         for ($i = 3; $i <= $num_primes; $i++) {
             $m_i = $x->modPow($this->exponents[$i], $this->primes[$i]);
             $r = $r->multiply($this->primes[$i - 1]);
             $h = $m_i->subtract($m);
             $h = $h->multiply($this->coefficients[$i]);
             list(, $h) = $h->divide($this->primes[$i]);
             $m = $m->add($r->multiply($h));
         }
     } else {
         $smallest = $this->primes[1];
         for ($i = 2; $i <= $num_primes; $i++) {
             if ($smallest->compare($this->primes[$i]) > 0) {
                 $smallest = $this->primes[$i];
             }
         }
         $one = new Math_BigInteger(1);
         $one->setRandomGenerator('crypt_random');
         $r = $one->random($one, $smallest->subtract($one));
         $m_i = array(1 => $this->_blind($x, $r, 1), 2 => $this->_blind($x, $r, 2));
         $h = $m_i[1]->subtract($m_i[2]);
         $h = $h->multiply($this->coefficients[2]);
         list(, $h) = $h->divide($this->primes[1]);
         $m = $m_i[2]->add($h->multiply($this->primes[2]));
         $r = $this->primes[1];
         for ($i = 3; $i <= $num_primes; $i++) {
             $m_i = $this->_blind($x, $r, $i);
             $r = $r->multiply($this->primes[$i - 1]);
             $h = $m_i->subtract($m);
             $h = $h->multiply($this->coefficients[$i]);
             list(, $h) = $h->divide($this->primes[$i]);
             $m = $m->add($r->multiply($h));
         }
     }
     return $m;
 }
开发者ID:microcosmx,项目名称:experiments,代码行数:57,代码来源:RSA.php

示例4: createKey

 /**
  * Create public / private key pair
  *
  * Returns an array with the following three elements:
  *  - 'privatekey': The private key.
  *  - 'publickey':  The public key.
  *  - 'partialkey': A partially computed key (if the execution time exceeded $timeout).
  *                  Will need to be passed back to Crypt_RSA::createKey() as the third parameter for further processing.
  *
  * @access public
  * @param optional Integer $bits
  * @param optional Integer $timeout
  * @param optional Math_BigInteger $p
  */
 function createKey($bits = 1024, $timeout = false, $primes = array())
 {
     if (CRYPT_RSA_MODE == CRYPT_RSA_MODE_OPENSSL) {
         $rsa = openssl_pkey_new(array('private_key_bits' => $bits));
         openssl_pkey_export($rsa, $privatekey);
         $publickey = openssl_pkey_get_details($rsa);
         $publickey = $publickey['key'];
         if ($this->privateKeyFormat != CRYPT_RSA_PRIVATE_FORMAT_PKCS1) {
             $privatekey = call_user_func_array(array($this, '_convertPrivateKey'), array_values($this->_parseKey($privatekey, CRYPT_RSA_PRIVATE_FORMAT_PKCS1)));
             $publickey = call_user_func_array(array($this, '_convertPublicKey'), array_values($this->_parseKey($publickey, CRYPT_RSA_PUBLIC_FORMAT_PKCS1)));
         }
         return array('privatekey' => $privatekey, 'publickey' => $publickey, 'partialkey' => false);
     }
     static $e;
     if (!isset($e)) {
         if (!defined('CRYPT_RSA_EXPONENT')) {
             // http://en.wikipedia.org/wiki/65537_%28number%29
             define('CRYPT_RSA_EXPONENT', '65537');
         }
         if (!defined('CRYPT_RSA_COMMENT')) {
             define('CRYPT_RSA_COMMENT', 'phpseclib-generated-key');
         }
         // per <http://cseweb.ucsd.edu/~hovav/dist/survey.pdf#page=5>, this number ought not result in primes smaller
         // than 256 bits.
         if (!defined('CRYPT_RSA_SMALLEST_PRIME')) {
             define('CRYPT_RSA_SMALLEST_PRIME', 4096);
         }
         $e = new Math_BigInteger(CRYPT_RSA_EXPONENT);
     }
     extract($this->_generateMinMax($bits));
     $absoluteMin = $min;
     $temp = $bits >> 1;
     if ($temp > CRYPT_RSA_SMALLEST_PRIME) {
         $num_primes = floor($bits / CRYPT_RSA_SMALLEST_PRIME);
         $temp = CRYPT_RSA_SMALLEST_PRIME;
     } else {
         $num_primes = 2;
     }
     extract($this->_generateMinMax($temp + $bits % $temp));
     $finalMax = $max;
     extract($this->_generateMinMax($temp));
     $exponents = $coefficients = array();
     $generator = new Math_BigInteger();
     $generator->setRandomGenerator('crypt_random');
     $n = $this->one->copy();
     $lcm = array('top' => $this->one->copy(), 'bottom' => false);
     $start = time();
     $i0 = count($primes) + 1;
     do {
         for ($i = $i0; $i <= $num_primes; $i++) {
             if ($timeout !== false) {
                 $timeout -= time() - $start;
                 $start = time();
                 if ($timeout <= 0) {
                     return array('privatekey' => '', 'publickey' => '', 'partialkey' => $primes);
                 }
             }
             if ($i == $num_primes) {
                 list($min, $temp) = $absoluteMin->divide($n);
                 if (!$temp->equals($this->zero)) {
                     $min = $min->add($this->one);
                     // ie. ceil()
                 }
                 $primes[$i] = $generator->randomPrime($min, $finalMax, $timeout);
             } else {
                 $primes[$i] = $generator->randomPrime($min, $max, $timeout);
             }
             if ($primes[$i] === false) {
                 // if we've reached the timeout
                 return array('privatekey' => '', 'publickey' => '', 'partialkey' => array_slice($primes, 0, $i - 1));
             }
             // the first coefficient is calculated differently from the rest
             // ie. instead of being $primes[1]->modInverse($primes[2]), it's $primes[2]->modInverse($primes[1])
             if ($i > 2) {
                 $coefficients[$i] = $n->modInverse($primes[$i]);
             }
             $n = $n->multiply($primes[$i]);
             $temp = $primes[$i]->subtract($this->one);
             // textbook RSA implementations use Euler's totient function instead of the least common multiple.
             // see http://en.wikipedia.org/wiki/Euler%27s_totient_function
             $lcm['top'] = $lcm['top']->multiply($temp);
             $lcm['bottom'] = $lcm['bottom'] === false ? $temp : $lcm['bottom']->gcd($temp);
             $exponents[$i] = $e->modInverse($temp);
         }
         list($lcm) = $lcm['top']->divide($lcm['bottom']);
         $gcd = $lcm->gcd($e);
//.........这里部分代码省略.........
开发者ID:alpacaaa,项目名称:simpledb-backup,代码行数:101,代码来源:RSA.php


注:本文中的Math_BigInteger::setRandomGenerator方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。