Cisco 4

<?php

/**
 * Encodes data in base64.
 *
 * @param string $data    - Binary data.
 * @param string $charSet - Base 64 character set.
 * @return string         - Base64 encoded data with $charSet.
 */
function base64Encode($data, $charSet = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
{
    $ret = '';
    $len = strlen($data);

    for ($i = 0; $i < $len; $i += 3)
    {
        // Get 1st byte of input
        $ch  = ord($data{$i});
        $tmp = $charSet{$ch >> 2};
        $ch  = ($ch & 0x03) << 8;
        if ($i + 1 >= $len)
        {
            // End of string
            $ret .= $tmp . $charSet{$ch >> 8};
            break;
        }

        // Get 2nd byte of input
        $ch  |= ord($data{$i + 1});
        $tmp .= $charSet{$ch >> 4};
        $ch   = ($ch & 0x0f) << 8;
        if ($i + 2 >= $len)
        {
            // End of string
            $ret .= $tmp . $charSet{$ch >> 6};
            break;
        }

        // Get 3rd byte of input
        $ch  |= ord($data{$i + 2});
        $ret .= $tmp .
            $charSet{$ch >> 6} .
            $charSet{$ch & 0x3f};
    }
    return $ret;
}

die(base64Encode(hash('sha256', 'password', true)));

?>