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Diffstat (limited to 'library/vendor/Zend/Crypt/Math/BigInteger/Gmp.php')
| -rw-r--r-- | library/vendor/Zend/Crypt/Math/BigInteger/Gmp.php | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/library/vendor/Zend/Crypt/Math/BigInteger/Gmp.php b/library/vendor/Zend/Crypt/Math/BigInteger/Gmp.php new file mode 100644 index 0000000..1912be7 --- /dev/null +++ b/library/vendor/Zend/Crypt/Math/BigInteger/Gmp.php @@ -0,0 +1,219 @@ +<?php +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Crypt + * @subpackage Math + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id$ + */ + +/** + * @see Zend_Crypt_Math_BigInteger_Interface + */ + +/** + * Support for arbitrary precision mathematics in PHP. + * + * Zend_Crypt_Math_BigInteger_Gmp is a wrapper across the PHP BCMath + * extension. + * + * @category Zend + * @package Zend_Crypt + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Crypt_Math_BigInteger_Gmp implements Zend_Crypt_Math_BigInteger_Interface +{ + + /** + * Initialise a big integer into an extension specific type. + * @param string $operand + * @param int $base + * @return string + */ + public function init($operand, $base = 10) + { + return $operand; + } + + /** + * Adds two arbitrary precision numbers + * + * @param resource $left_operand + * @param resource $right_operand + * @return string + */ + public function add($left_operand, $right_operand) + { + $result = gmp_add($left_operand, $right_operand); + return gmp_strval($result); + } + + /** + * Subtract numbers + * + * @param resource $left_operand + * @param resource $right_operand + * @return string + */ + public function subtract($left_operand, $right_operand) + { + $result = gmp_sub($left_operand, $right_operand); + return gmp_strval($result); + } + + /** + * Compare two big integers and returns result as an integer where 0 means + * both are identical, 1 that left_operand is larger, or -1 that + * right_operand is larger. + * + * @param resource $left_operand + * @param resource $right_operand + * @return int + */ + public function compare($left_operand, $right_operand) + { + $result = gmp_cmp($left_operand, $right_operand); + return gmp_strval($result); + } + + /** + * Divide two big integers and return result or NULL if the denominator + * is zero. + * + * @param resource $left_operand + * @param resource $right_operand + * @return string|null + */ + public function divide($left_operand, $right_operand) + { + $result = gmp_div($left_operand, $right_operand); + return gmp_strval($result); + } + + /** + * Modulo operation + * + * @param resource $left_operand + * @param resource $modulus + * @internal param string $right_operand + * @return string + */ + public function modulus($left_operand, $modulus) + { + $result = gmp_mod($left_operand, $modulus); + return gmp_strval($result); + } + + /** + * Multiply numbers + * + * @param resource $left_operand + * @param resource $right_operand + * @return string + */ + public function multiply($left_operand, $right_operand) + { + $result = gmp_mul($left_operand, $right_operand); + return gmp_strval($result); + } + + /** + * Raise number into power + * + * @param resource $left_operand + * @param int $right_operand + * @return string + */ + public function pow($left_operand, $right_operand) + { + $result = gmp_pow($left_operand, $right_operand); + return gmp_strval($result); + } + + /** + * Raise number into power with modulo + * + * @param resource $left_operand + * @param resource $right_operand + * @param resource $modulus + * @return string + */ + public function powmod($left_operand, $right_operand, $modulus) + { + $result = gmp_powm($left_operand, $right_operand, $modulus); + return gmp_strval($result); + } + + /** + * Calculate square root + * + * @param $operand + * @return string + */ + public function sqrt($operand) + { + $result = gmp_sqrt($operand); + return gmp_strval($result); + } + + /** + * @param string $operand + * @return string + */ + public function binaryToInteger($operand) + { + $result = '0'; + while (strlen($operand)) { + $ord = ord(substr($operand, 0, 1)); + $result = gmp_add(gmp_mul($result, 256), $ord); + $operand = substr($operand, 1); + } + return gmp_strval($result); + } + + /** + * @param resource $operand GMP number resource + * @return string + */ + public function integerToBinary($operand) + { + $bigInt = gmp_strval($operand, 16); + if (strlen($bigInt) % 2 != 0) { + $bigInt = '0' . $bigInt; + } else if ($bigInt[0] > '7') { + $bigInt = '00' . $bigInt; + } + $return = pack("H*", $bigInt); + return $return; + } + + /** + * @param string $operand + * @return string + */ + public function hexToDecimal($operand) + { + $return = '0'; + while(strlen($hex)) { + $hex = hexdec(substr($operand, 0, 4)); + $dec = gmp_add(gmp_mul($return, 65536), $hex); + $operand = substr($operand, 4); + } + return $return; + } + +} |