<?php
namespace Common\Org;
class RsaCrypt {
 const CERPATH ='../Application/Runtime/Data/server.cer'; //生成证书路径
 const PFXPATH = '../Application/Runtime/Data/server.pfx'; //秘钥文件路径
 const FILEDIR = '../Application/Runtime/Data/';
  /**
  * 生成公钥私钥
  */
  public static function generateCertKey()
  {
  $dn = array('countryName'=>'CN', 'stateOrProvinceName'=>'beijing', 'localityName'=>'beijing','organizationName'=>'clcw',
    'organizationalUnitName'=>'clcw', 'commonName'=>'clcw', 'emailAddress'=>'service@clcw.com.cn');
  $privkeypass = 'secret';  //私钥密码
  $numberOfDays = 365;   //有效时长，单位为天
  //生成证书
  $privkey = openssl_pkey_new();
  $csr = openssl_csr_new($dn, $privkey);
  $sscert = openssl_csr_sign($csr, null, $privkey, $numberOfDays);
  openssl_x509_export_to_file($sscert, self::CERPATH);
  openssl_pkcs12_export_to_file($sscert, self::PFXPATH, $privkey, $privkeypass);
  (file_exists(self::CERPATH)) or die('公钥的文件路径错误');
  (file_exists(self::PFXPATH)) or die('密钥的文件路径错误');
  }
  public static function verifyData($originData, $decryptData)
  {
  $cer_key = file_get_contents(self::$cerpath);
  $cer = openssl_x509_read($cer_key);
  $res = openssl_verify($originData, $decryptData, $cer);
  var_dump($res);
  }
  /**
  * 生成公钥私钥文件
  * @param $appName string 应用名称
  */
  public static function generateKey($appName='')
  {
  $result = ['status'=>0, 'msg'=>''];
  if (!extension_loaded('openssl') ) {
   $result['msg'] = 'php需要openssl支持';
  }
  //创建公钥
  $res = openssl_pkey_new();//array('private_key_bits'=>512) 这一串参数不加，否则只能加密54个长度的字符串
  //提取私钥
  openssl_pkey_export($res, $privatekey);
  //生成公钥
  $public_key = openssl_pkey_get_details($res);
  $publickey = $public_key['key'];
  // $path = self::FILEDIR.$appName;
  try{
   // file_put_contents($path.'_public.pem', $publickey);
   // file_put_contents($path.'_private.pem', $privatekey);
   $result['status'] = 1;
   $result['publickey'] = $publickey;
   $result['privatekey'] = $privatekey;
  }catch(\Exception $e) {
   // throw new \Exception($e->getMessage());
   $result['msg'] = $e->getMessage();
  }
  return $result;
  }
  /**
  * 用私钥加密数据
  * @param $data string 需要加密的字符串(最好不要超过200个字符)
  * @param $appName string 应用名称
  */
  public static function privateEncrypt($data, $appName)
  {
  $result = ['status'=>0, 'msg'=>''];
  $privatekey = C($appName.'.PRIVATE_KEY');
  $myinfo = 'In '.__METHOD__.',privatekey:'.$privatekey."\n";
  file_put_contents('/tmp/shiyf.log', $myinfo, FILE_APPEND);
  //生成resource类型的密钥，如果密钥文件内容被破坏，openssl_pkey_get_private函数返回false
  $privatekey = openssl_pkey_get_private($privatekey);
  if (empty($privatekey)) {
   $result['msg'] = '密钥不可用';
  }
  $encryptData = '';
  //用私钥加密
  if (openssl_private_encrypt($data, $encryptData, $privatekey)) {
   $result['msg'] = base64_encode($encryptData);
   $result['status'] = 1;
  } else {
   $result['msg'] = '加密失败！';
  }
  return $result;
  }
  /**
  * 用公钥解密数据
  * @param $data string 需要解密的字符串(最好不要超过200个字符)
  * @param $appName string 应用名称
  */
  public static function publicDecrypt($data, $appName)
  {
  $result = ['status'=>0, 'msg'=>''];
  $data = base64_decode($data);
  $publickey = C($appName.'.PUBLIC_KEY');
  //生成resource类型的公钥，如果公钥文件内容被破坏，openssl_pkey_get_public函数返回false
  $publickey = openssl_pkey_get_public($publickey);
  if (empty($publickey)) {
   $result['msg'] = '公钥不可用';
  }
  //解密数据
  $decryptData = '';
  if (openssl_public_decrypt($data, $decryptData, $publickey)) {
   $result['msg'] = $decryptData;
   $result['status'] = 1;
  } else {
   $result['msg'] = '解密失败';
  }
  return $result;
  }
  /**
  * 用公钥加密数据
  * @param $data string 需要加密的字符串(最好不要超过200个字符)
  * @param $appName string 应用名称
  */
  public static function publicEncrypt($data, $publickey)
  {
  $result = ['status'=>0, 'msg'=>''];
  //生成resource类型的公钥，如果公钥文件内容被破坏，openssl_pkey_get_private函数返回false
  $publickey = openssl_pkey_get_public($publickey);
  if (empty($publickey)) {
   $result['msg'] = '公钥不可用';
  }
  $encryptData = '';
  //用私钥加密
  if (openssl_public_encrypt($data, $encryptData, $publickey)) {
   $result['msg'] = base64_encode($encryptData);
   $result['status'] = 1;
  } else {
   $result['msg'] = '加密失败！';
  }
  return $result;
  }
  /**
  * 用私钥加密数据
  * @param $data string 需要解密的字符串(最好不要超过200个字符)
  * @param $appName string 应用名称
  */
  public static function privateDecrypt($data, $appName)
  {
  $result = ['status'=>0, 'msg'=>''];
  $data = base64_decode($data);
  $privatekey = C($appName.'.PRIVATE_KEY');
  //生成resource类型的私钥，如果私钥文件内容被破坏，openssl_pkey_get_public函数返回false
  $privatekey = openssl_pkey_get_private($privatekey);
  if (empty($privatekey)) {
   $result['msg'] = '私钥不可用';
  }
  //解密数据
  $decryptData = '';
  if (openssl_private_decrypt($data, $decryptData, $privatekey)) {
   $result['msg'] = $decryptData;
   $result['status'] = 1;
  } else {
   $result['msg'] = '解密失败';
  }
  return $result;
  }
}