AbstractSalt.php

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<?php
namespace TYPO3\CMS\Saltedpasswords\Salt;

abstract class AbstractSalt {

    abstract protected function applySettingsToSalt($salt);

    abstract protected function getGeneratedSalt();

    abstract protected function getItoa64();

    abstract protected function getSetting();

    public function base64Encode($input, $count) {
        $output = '';
        $i = 0;
        $itoa64 = $this->getItoa64();
        do {
            $value = ord($input[$i++]);
            $output .= $itoa64[$value & 63];
            if ($i < $count) {
                $value |= ord($input[$i]) << 8;
            }
            $output .= $itoa64[$value >> 6 & 63];
            if ($i++ >= $count) {
                break;
            }
            if ($i < $count) {
                $value |= ord($input[$i]) << 16;
            }
            $output .= $itoa64[$value >> 12 & 63];
            if ($i++ >= $count) {
                break;
            }
            $output .= $itoa64[$value >> 18 & 63];
        } while ($i < $count);
        return $output;
    }

    protected function getLengthBase64FromBytes($byteLength) {
        // Calculates bytes in bits in base64
        return (int)ceil($byteLength * 8 / 6);
    }

}