class RsaEncrypt
{
private $_privateKey = false;
private $_publicKey = false;
/**
* 私钥解密
* @param $data 需解密的数据
* @return string 解密后的数据
*/
public function __construct()
{
//header('Content-Type:text/html;charset=utf-8');
}
/**
* @param $content
* @return string
* 解析字符串
*/
public function decryptByPrivate($content){
$rsa_bit = 2048;
$one = $rsa_bit/8;
$encrypted = hex2bin($content);
$decrytped = '';
$num = ceil(strlen($encrypted) / $one);
for($i = 0; $i < $num; $i++){
$data_part = substr($encrypted,$i * $one,$one);
$de = '';
if(openssl_private_decrypt($data_part,$de,$this->getPrivateKey())){
$decrytped .=$de;
}else{
print_r(openssl_error_string());exit;
};
}
return $decrytped;
}
/**
* 公钥解密
** @param $data 需解密的数据
* @return string 解密后的数据
*/
public function decryptByPublic($data){
$decrypted = '';
openssl_public_decrypt($data,$decrypted,$this->getPublicKey());
openssl_free_key($this->_publicKey);
return $decrypted;
}
/**
* 银联公钥解密
** @param $data 需解密的数据
* @return string 解密后的数据
*/
public function decryptByYinlianPublic($data){
$decrypted = '';
openssl_public_decrypt($data,$decrypted,$this->getYinlianPublicKey