m_sToken = $token; $this->m_sEncodingAesKey = $encodingAesKey; $this->m_sReceiveId = $receiveId; } /* *验证URL *@param sMsgSignature: 签名串,对应URL参数的msg_signature *@param sTimeStamp: 时间戳,对应URL参数的timestamp *@param sNonce: 随机串,对应URL参数的nonce *@param sEchoStr: 随机串,对应URL参数的echostr *@param sReplyEchoStr: 解密之后的echostr,当return返回0时有效 *@return:成功0,失败返回对应的错误码 */ public function VerifyURL($sMsgSignature, $sTimeStamp, $sNonce, $sEchoStr, &$sReplyEchoStr) { if (strlen($this->m_sEncodingAesKey) != 43) { return ErrorCode::$IllegalAesKey; } $pc = new Prpcrypt($this->m_sEncodingAesKey); //verify msg_signature $sha1 = new SHA1; $array = $sha1->getSHA1($this->m_sToken, $sTimeStamp, $sNonce, $sEchoStr); $ret = $array[0]; if ($ret != 0) { return $ret; } $signature = $array[1]; if ($signature != $sMsgSignature) { return ErrorCode::$ValidateSignatureError; } $result = $pc->decrypt($sEchoStr, $this->m_sReceiveId); if ($result[0] != 0) { return $result[0]; } $sReplyEchoStr = $result[1]; return ErrorCode::$OK; } /** * 将公众平台回复用户的消息加密打包. *
    *
  1. 对要发送的消息进行AES-CBC加密
  2. *
  3. 生成安全签名
  4. *
  5. 将消息密文和安全签名打包成xml格式
  6. *
* * @param $replyMsg string 公众平台待回复用户的消息,xml格式的字符串 * @param $timeStamp string 时间戳,可以自己生成,也可以用URL参数的timestamp * @param $nonce string 随机串,可以自己生成,也可以用URL参数的nonce * @param &$encryptMsg string 加密后的可以直接回复用户的密文,包括msg_signature, timestamp, nonce, encrypt的xml格式的字符串, * 当return返回0时有效 * * @return int 成功0,失败返回对应的错误码 */ public function EncryptMsg($sReplyMsg, $sTimeStamp, $sNonce, &$sEncryptMsg) { $pc = new Prpcrypt($this->m_sEncodingAesKey); //加密 $array = $pc->encrypt($sReplyMsg, $this->m_sReceiveId); $ret = $array[0]; if ($ret != 0) { return $ret; } if ($sTimeStamp == null) { $sTimeStamp = time(); } $encrypt = $array[1]; //生成安全签名 $sha1 = new SHA1; $array = $sha1->getSHA1($this->m_sToken, $sTimeStamp, $sNonce, $encrypt); $ret = $array[0]; if ($ret != 0) { return $ret; } $signature = $array[1]; //生成发送的xml $xmlparse = new XMLParse; $sEncryptMsg = $xmlparse->generate($encrypt, $signature, $sTimeStamp, $sNonce); return ErrorCode::$OK; } /** * 检验消息的真实性,并且获取解密后的明文. *
    *
  1. 利用收到的密文生成安全签名,进行签名验证
  2. *
  3. 若验证通过,则提取xml中的加密消息
  4. *
  5. 对消息进行解密
  6. *
* * @param $msgSignature string 签名串,对应URL参数的msg_signature * @param $timestamp string 时间戳 对应URL参数的timestamp * @param $nonce string 随机串,对应URL参数的nonce * @param $postData string 密文,对应POST请求的数据 * @param &$msg string 解密后的原文,当return返回0时有效 * * @return int 成功0,失败返回对应的错误码 */ public function DecryptMsg($sMsgSignature, $sTimeStamp = null, $sNonce, $sPostData, &$sMsg) { if (strlen($this->m_sEncodingAesKey) != 43) { return ErrorCode::$IllegalAesKey; } $pc = new Prpcrypt($this->m_sEncodingAesKey); //提取密文 $xmlparse = new XMLParse; $array = $xmlparse->extract($sPostData); $ret = $array[0]; if ($ret != 0) { return $ret; } if ($sTimeStamp == null) { $sTimeStamp = time(); } $encrypt = $array[1]; //验证安全签名 $sha1 = new SHA1; $array = $sha1->getSHA1($this->m_sToken, $sTimeStamp, $sNonce, $encrypt); $ret = $array[0]; if ($ret != 0) { return $ret; } $signature = $array[1]; if ($signature != $sMsgSignature) { return ErrorCode::$ValidateSignatureError; } $result = $pc->decrypt($encrypt, $this->m_sReceiveId); if ($result[0] != 0) { return $result[0]; } $sMsg = $result[1]; return ErrorCode::$OK; } }