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- the triple equals in Math_BigIinteger::equals() made it so float(1) != int(1), so all instances where float(1) might occur have been removed
- Crypt_RSA::_blind() should now be faster. git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@95 21d32557-59b3-4da0-833f-c5933fad653e
This commit is contained in:
Jim Wigginton
parent
c0b0886762
commit
1539cd4a01
@ -62,7 +62,7 @@
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright MMIX Jim Wigginton
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* @license http://www.gnu.org/licenses/lgpl.txt
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* @version $Id: RSA.php,v 1.13 2010-02-28 06:57:00 terrafrost Exp $
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* @version $Id: RSA.php,v 1.14 2010-03-01 17:28:19 terrafrost Exp $
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* @link http://phpseclib.sourceforge.net
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*/
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@ -504,6 +504,7 @@ class Crypt_RSA {
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));
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}
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}
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if ($i == $num_primes) {
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list($min, $temp) = $absoluteMin->divide($n);
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if (!$temp->equals($this->zero)) {
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@ -1311,9 +1312,21 @@ class Crypt_RSA {
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$m = $m->add($r->multiply($h));
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}
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} else {
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$smallest = $this->primes[1];
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for ($i = 2; $i <= $num_primes; $i++) {
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if ($smallest->compare($this->primes[$i]) > 0) {
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$smallest = $this->primes[$i];
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}
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}
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$one = new Math_BigInteger(1);
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$one->setRandomGenerator('crypt_random');
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$r = $one->random($one, $smallest->subtract($one));
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$m_i = array(
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1 => $this->_blind($x, 1),
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2 => $this->_blind($x, 2)
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1 => $this->_blind($x, $r, 1),
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2 => $this->_blind($x, $r, 2)
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);
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$h = $m_i[1]->subtract($m_i[2]);
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$h = $h->multiply($this->coefficients[2]);
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@ -1322,7 +1335,7 @@ class Crypt_RSA {
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$r = $this->primes[1];
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for ($i = 3; $i <= $num_primes; $i++) {
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$m_i = $this->_blind($x, $i);
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$m_i = $this->_blind($x, $r, $i);
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$r = $r->multiply($this->primes[$i - 1]);
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@ -1345,18 +1358,12 @@ class Crypt_RSA {
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*
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* @access private
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* @param Math_BigInteger $x
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* @param Math_BigInteger $r
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* @param Integer $i
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* @return Math_BigInteger
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*/
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function _blind($x, $i)
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function _blind($x, $r, $i)
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{
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static $one;
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if (!isset($one)) {
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$one = new Math_BigInteger(1);
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$one->setRandomGenerator('crypt_random');
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}
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$r = $one->random($one, $this->primes[$i]->subtract($one));
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$x = $x->multiply($r->modPow($this->publicExponent, $this->primes[$i]));
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$x = $x->modPow($this->exponents[$i], $this->primes[$i]);
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@ -67,7 +67,7 @@
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright MMVI Jim Wigginton
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* @license http://www.gnu.org/licenses/lgpl.txt
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* @version $Id: BigInteger.php,v 1.30 2010-02-26 03:40:26 terrafrost Exp $
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* @version $Id: BigInteger.php,v 1.31 2010-03-01 17:28:19 terrafrost Exp $
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* @link http://pear.php.net/package/Math_BigInteger
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*/
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@ -862,7 +862,7 @@ class Math_BigInteger {
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$temp = (int) ($sum / 0x4000000);
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$value[$i] = $sum - 0x4000000 * $temp; // eg. a faster alternative to fmod($sum, 0x4000000)
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$value[$i] = (int) ($sum - 0x4000000 * $temp); // eg. a faster alternative to fmod($sum, 0x4000000)
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$value[$j] = $temp;
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}
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@ -998,7 +998,7 @@ class Math_BigInteger {
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$temp = (int) ($sum / 0x4000000);
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$x_value[$i] = $sum - 0x4000000 * $temp;
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$x_value[$i] = (int) ($sum - 0x4000000 * $temp);
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$x_value[$j] = $temp;
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}
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@ -1145,7 +1145,7 @@ class Math_BigInteger {
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for ($j = 0; $j < $x_length; ++$j) { // ie. $i = 0
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$temp = $x_value[$j] * $y_value[0] + $carry; // $product_value[$k] == 0
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$carry = (int) ($temp / 0x4000000);
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$product_value[$j] = $temp - 0x4000000 * $carry;
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$product_value[$j] = (int) ($temp - 0x4000000 * $carry);
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}
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$product_value[$j] = $carry;
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@ -1158,7 +1158,7 @@ class Math_BigInteger {
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for ($j = 0, $k = $i; $j < $x_length; ++$j, ++$k) {
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$temp = $product_value[$k] + $x_value[$j] * $y_value[$i] + $carry;
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$carry = (int) ($temp / 0x4000000);
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$product_value[$k] = $temp - 0x4000000 * $carry;
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$product_value[$k] = (int) ($temp - 0x4000000 * $carry);
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}
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$product_value[$k] = $carry;
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@ -1246,13 +1246,13 @@ class Math_BigInteger {
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$temp = $square_value[$i2] + $value[$i] * $value[$i];
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$carry = (int) ($temp / 0x4000000);
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$square_value[$i2] = $temp - 0x4000000 * $carry;
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$square_value[$i2] = (int) ($temp - 0x4000000 * $carry);
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// note how we start from $i+1 instead of 0 as we do in multiplication.
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for ($j = $i + 1, $k = $i2 + 1; $j <= $max_index; ++$j, ++$k) {
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$temp = $square_value[$k] + 2 * $value[$j] * $value[$i] + $carry;
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$carry = (int) ($temp / 0x4000000);
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$square_value[$k] = $temp - 0x4000000 * $carry;
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$square_value[$k] = (int) ($temp - 0x4000000 * $carry);
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}
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// the following line can yield values larger 2**15. at this point, PHP should switch
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@ -1520,7 +1520,7 @@ class Math_BigInteger {
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for ($i = count($dividend) - 1; $i >= 0; --$i) {
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$temp = 0x4000000 * $carry + $dividend[$i];
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$result[$i] = (int) ($temp / $divisor);
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$carry = $temp - $divisor * $result[$i];
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$carry = (int) ($temp - $divisor * $result[$i]);
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}
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return array($result, $carry);
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@ -2090,7 +2090,7 @@ class Math_BigInteger {
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for ($j = 0; $j < $x_length; ++$j) { // ie. $i = 0, $k = $i
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$temp = $x_value[$j] * $y_value[0] + $carry; // $product_value[$k] == 0
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$carry = (int) ($temp / 0x4000000);
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$product_value[$j] = $temp - 0x4000000 * $carry;
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$product_value[$j] = (int) ($temp - 0x4000000 * $carry);
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}
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if ($j < $stop) {
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@ -2106,7 +2106,7 @@ class Math_BigInteger {
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for ($j = 0, $k = $i; $j < $x_length && $k < $stop; ++$j, ++$k) {
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$temp = $product_value[$k] + $x_value[$j] * $y_value[$i] + $carry;
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$carry = (int) ($temp / 0x4000000);
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$product_value[$k] = $temp - 0x4000000 * $carry;
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$product_value[$k] = (int) ($temp - 0x4000000 * $carry);
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}
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if ($k < $stop) {
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@ -2154,7 +2154,7 @@ class Math_BigInteger {
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for ($i = 0; $i < $k; ++$i) {
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$temp = $result[MATH_BIGINTEGER_VALUE][$i] * $cache[MATH_BIGINTEGER_DATA][$key];
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$temp = $temp - 0x4000000 * ((int) ($temp / 0x4000000));
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$temp = (int) ($temp - 0x4000000 * ((int) ($temp / 0x4000000)));
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$temp = $this->_regularMultiply(array($temp), $n);
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$temp = array_merge($this->_array_repeat(0, $i), $temp);
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$result = $this->_add($result[MATH_BIGINTEGER_VALUE], false, $temp, false);
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@ -2206,9 +2206,9 @@ class Math_BigInteger {
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$a = array(MATH_BIGINTEGER_VALUE => $this->_array_repeat(0, $n + 1));
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for ($i = 0; $i < $n; ++$i) {
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$temp = $a[MATH_BIGINTEGER_VALUE][0] + $x[$i] * $y[0];
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$temp = $temp - 0x4000000 * ((int) ($temp / 0x4000000));
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$temp = (int) ($temp - 0x4000000 * ((int) ($temp / 0x4000000)));
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$temp = $temp * $cache[MATH_BIGINTEGER_DATA][$key];
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$temp = $temp - 0x4000000 * ((int) ($temp / 0x4000000));
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$temp = (int) ($temp - 0x4000000 * ((int) ($temp / 0x4000000)));
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$temp = $this->_add($this->_regularMultiply(array($x[$i]), $y), false, $this->_regularMultiply(array($temp), $m), false);
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$a = $this->_add($a[MATH_BIGINTEGER_VALUE], false, $temp[MATH_BIGINTEGER_VALUE], false);
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$a[MATH_BIGINTEGER_VALUE] = array_slice($a[MATH_BIGINTEGER_VALUE], 1);
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@ -3316,7 +3316,7 @@ class Math_BigInteger {
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for ($i = 0; $i < count($this->value); ++$i) {
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$temp = $this->value[$i] * $shift + $carry;
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$carry = (int) ($temp / 0x4000000);
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$this->value[$i] = $temp - $carry * 0x4000000;
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$this->value[$i] = (int) ($temp - $carry * 0x4000000);
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}
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if ( $carry ) {
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