Utility.php
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<?php
/**
* Utility, provide RSA public encrypt method and gzdecode function
*/
class RsaPublicEncrypt {
/**
* @var string
*/
private $publicKey;
/**
* @var string
*/
private $path;
/**
* construct
* @param string $path
*/
public function __construct($path)
{
if(empty($path) || !is_dir($path))
{
echo "[error] error public key path: {$path}" . PHP_EOL;
}
$this->path = $path;
}
/**
* setup public key
* @return boolean
*/
public function setupPublicKey()
{
if(is_resource($this->publicKey))
{
return true;
}
$file = $this->path . DIRECTORY_SEPARATOR . 'api_pub.key';
$puk = file_get_contents($file);
$this->publicKey = openssl_pkey_get_public($puk);
return true;
}
/**
* pub encrypt
* @param string $data
* @return string
*/
public function pubEncrypt($data)
{
if(!is_string($data))
{
return null;
}
$this->setupPublicKey();
$ret = openssl_public_encrypt($data, $encrypted, $this->publicKey);
if($ret)
{
return $encrypted;
}
else
{
return null;
}
}
/**
* destruct
*/
public function __destruct()
{
@fclose($this->publicKey);
}
}
if (!function_exists('gzdecode')) {
/**
* gzdecode
* @param string $data
* @return string
*/
function gzdecode($data) {
$flags = ord(substr($data, 3, 1));
$headerlen = 10;
$extralen = 0;
$filenamelen = 0;
if ($flags & 4) {
$extralen = unpack('v' ,substr($data, 10, 2));
$extralen = $extralen[1];
$headerlen += 2 + $extralen;
}
if ($flags & 8) {
$headerlen = strpos($data, chr(0), $headerlen) + 1;
}
if ($flags & 16) {
$headerlen = strpos($data, chr(0), $headerlen) + 1;
}
if ($flags & 2) {
$headerlen += 2;
}
$unpacked = @gzinflate(substr($data, $headerlen));
if ($unpacked === false) {
$unpacked = $data;
}
return $unpacked;
}
}