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<?php |
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/** |
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* sysPass |
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* |
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* @author nuxsmin |
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* @link https://syspass.org |
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* @copyright 2012-2018, Rubén Domínguez nuxsmin@$syspass.org |
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* |
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* This file is part of sysPass. |
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* |
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* sysPass is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* sysPass is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with sysPass. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace SP\Util; |
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use Defuse\Crypto\Core; |
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use Defuse\Crypto\Encoding; |
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/** |
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* Class PasswordUtil |
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* |
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* @package SP\Util |
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*/ |
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final class PasswordUtil |
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{ |
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const CHARS = 'abcdefghijklmnopqrstuwxyz'; |
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const CHARS_SPECIAL = '@$%&/()!_:.;{}^-'; |
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const CHARS_NUMBER = '0123456789'; |
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const FLAG_PASSWORD_NUMBER = 2; |
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const FLAG_PASSWORD_SPECIAL = 4; |
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const FLAG_PASSWORD_STRENGTH = 8; |
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/** |
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* Generate a ramdom password |
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* |
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* @param int $length Password length |
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* @param int $flags Password chars included and checking strength flags |
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* |
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* @return string |
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*/ |
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public static function randomPassword($length = 16, int $flags = null) |
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{ |
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if ($flags === null) { |
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$flags = self::FLAG_PASSWORD_SPECIAL | self::FLAG_PASSWORD_NUMBER | self::FLAG_PASSWORD_STRENGTH; |
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} |
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$useSpecial = ($flags & self::FLAG_PASSWORD_SPECIAL) > 0; |
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$useNumbers = ($flags & self::FLAG_PASSWORD_NUMBER) > 0; |
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$alphabet = self::CHARS . strtoupper(self::CHARS); |
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if ($useSpecial) { |
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$alphabet .= self::CHARS_SPECIAL; |
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} |
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if ($useNumbers) { |
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$alphabet .= self::CHARS_NUMBER; |
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} |
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/** |
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* @return array |
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*/ |
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$passGen = function () use ($alphabet, $length) { |
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$pass = []; |
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$alphaLength = strlen($alphabet) - 1; //put the length -1 in cache |
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for ($i = 0; $i < $length; $i++) { |
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$n = mt_rand(0, $alphaLength); |
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$pass[] = $alphabet[$n]; |
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} |
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return $pass; |
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}; |
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if ($flags & self::FLAG_PASSWORD_STRENGTH) { |
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do { |
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$pass = $passGen(); |
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$strength = self::checkStrength($pass); |
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$res = $strength['lower'] > 0 && $strength['upper'] > 0; |
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if ($useSpecial === true) { |
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$res = $res && $strength['special'] > 0; |
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} |
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if ($useNumbers === true) { |
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$res = $res && $strength['number'] > 0; |
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} |
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} while ($res === false); |
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return implode('', $pass); |
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} |
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return implode($passGen()); |
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} |
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/** |
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* @param array $pass |
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* |
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* @return array |
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*/ |
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public static function checkStrength(array $pass) |
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{ |
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$charsUpper = strtoupper(self::CHARS); |
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$strength = ['lower' => 0, 'upper' => 0, 'special' => 0, 'number' => 0]; |
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foreach ($pass as $char) { |
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$strength['lower'] += substr_count(self::CHARS, $char); |
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$strength['upper'] += substr_count($charsUpper, $char); |
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$strength['special'] += substr_count(self::CHARS_SPECIAL, $char); |
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$strength['number'] += substr_count(self::CHARS_NUMBER, $char); |
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} |
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return $strength; |
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} |
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/** |
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* Generar una cadena aleatoria usuando criptografía. |
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* |
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* @param int $length opcional, con la longitud de la cadena |
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* |
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* @return string |
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* @throws \Defuse\Crypto\Exception\EnvironmentIsBrokenException |
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*/ |
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public static function generateRandomBytes($length = 30) |
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{ |
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return Encoding::binToHex(Core::secureRandom($length)); |
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} |
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} |
nuxsmin /
sysPass
