/**
* RSA算法類
* 簽名及密文編碼:base64字符串/十六進制字符串/二進制字符串流
* 填充方式: PKCS1Padding(加解密)/NOPadding(解密)
*
* Notice:Only accepts a single block. Block size is equal to the RSA key size!
* 如密鑰長度爲1024 bit,則加密時數據需小於128字節,加上PKCS1Padding本身的11字節信息,所以明文需小於117字節,支持分段加密
*/
class RSA
{
private $pubKey = null;
private $priKey = null;
/**
* 構造函數
*
* @param string 公鑰文件(驗籤和加密時傳入)
* @param string 私鑰文件(簽名和解密時傳入)
*/
public function __construct($pubKey = '', $priKey = '')
{
$this->pubKey=$pubKey;
$this->priKey=$priKey;
}
// 私有方法
/**
* 自定義錯誤處理
*/
private function _error($msg)
{
die('RSA Error:' . $msg); //TODO
}
/**
* 檢測填充類型
* 加密只支持PKCS1_PADDING
* 解密支持PKCS1_PADDING和NO_PADDING
*
* @param int 填充模式
* @param string 加密en/解密de
* @return bool
*/
private function _checkPadding($padding, $type)
{
if ($type == 'en') {
switch ($padding) {
case OPENSSL_PKCS1_PADDING:
$ret = true;
break;
default:
$ret = false;
}
} else {
switch ($padding) {
case OPENSSL_PKCS1_PADDING:
case OPENSSL_NO_PADDING:
$ret = true;
break;
default:
$ret = false;
}
}
return $ret;
}
private function _encode($data, $code)
{
switch (strtolower($code)) {
case 'base64':
$data = base64_encode('' . $data);
break;
case 'hex':
$data = bin2hex($data);
break;
case 'bin':
default:
}
return $data;
}
private function _decode($data, $code)
{
switch (strtolower($code)) {
case 'base64':
$data = base64_decode($data);
break;
case 'hex':
$data = $this->_hex2bin($data);
break;
case 'bin':
default:
}
return $data;
}
private function _readFile($file)
{
$ret = false;
if (!file_exists($file)) {
$this->_error("The file {$file} is not exists");
} else {
$ret = file_get_contents($file);
}
return $ret;
}
private function _hex2bin($hex = false)
{
$ret = $hex !== false && preg_match('/^[0-9a-fA-F]+$/i', $hex) ? pack("H*", $hex) : false;
return $ret;
}
/**
* 生成簽名
*
* @param string 簽名材料
* @param string 簽名編碼(base64/hex/bin)
* @return 簽名值
*/
public function sign($data, $code = 'base64')
{
$ret = false;
if (openssl_sign($data, $ret, $this->priKey)) {
$ret = $this->_encode($ret, $code);
}
return $ret;
}
/**
* 驗證簽名
*
* @param string 簽名材料
* @param string 簽名值
* @param string 簽名編碼(base64/hex/bin)
* @return bool
*/
public function verify($data, $sign, $code = 'base64')
{
$ret = false;
$sign = $this->_decode($sign, $code);
if ($sign !== false) {
switch (openssl_verify($data, $sign, $this->pubKey)) {
case 1:
$ret = true;
break;
case 0:
case -1:
default:
$ret = false;
}
}
return $ret;
}
/**
* 加密
*
* @param string 明文
* @param string 密文編碼(base64/hex/bin)
* @param int 填充方式(貌似php有bug,所以目前僅支持OPENSSL_PKCS1_PADDING)
* @return string 密文
*/
public function encrypt($data, $code = 'base64', $padding = OPENSSL_PKCS1_PADDING)
{
$ret = false;
if (!$this->_checkPadding($padding, 'en')) $this->_error('padding error');
$crypto = '';
foreach (str_split($data, 117) as $chunk) {
$encryptData = '';
if(openssl_public_encrypt($chunk, $encryptData, $this->pubKey,$padding)){
$crypto .= $encryptData;
}else{
die('加密失敗');
}
}
return $this->_encode($crypto, $code);
}
/**
* 解密
*
* @param string 密文
* @param string 密文編碼(base64/hex/bin)
* @param int 填充方式(OPENSSL_PKCS1_PADDING / OPENSSL_NO_PADDING)
* @param bool 是否翻轉明文(When passing Microsoft CryptoAPI-generated RSA cyphertext, revert the bytes in the block)
* @return string 明文
*/
public function decrypt($data, $code = 'base64', $padding = OPENSSL_PKCS1_PADDING, $rev = false)
{
$ret = false;
$data = $this->_decode($data, $code);
if (!$this->_checkPadding($padding, 'de')) $this->_error('padding error');
if ($data !== false) {
$crypto = '';
foreach (str_split($data, 128) as $chunk) {
if(openssl_private_decrypt($chunk, $decryptData, $this->priKey,$padding)){
$decryptData = $rev ? rtrim(strrev($decryptData), "\0") : '' . $decryptData;
$crypto .= $decryptData;
}else{
die('解密失敗');
}
}
return $crypto;
}
return $ret;
}
}
$rsa = new RSA(PLATFORM_PUB_KEY, RSA_PRI);
$body = array();
$body['orderId']=uniqid();
$body['amount']=1;
$body['account']='6223190222754761';
$body['phone']='18669723768';
$body['bankName']="山東省農村信用社";
$body['accName']='王曉東';
$body['agentType']=0;
$body['settleType']=0;
$body['ppType']=1;
$body['memo']=1;
//要加密的數據組成查詢字符串
$str = urldecode(http_build_query($body)) ;
//公鑰加密
$req_arr['cipher'] = $rsa->encrypt($str);
$req_arr['sign'] = $rsa->sign($sign_str); //使用商戶私鑰簽名
以上是我在對接騰付通api寫的php 部分代碼