<?php
    namespace fdd;
    require_once "FddConfig.php";
    /**
     * 3DES加解密类
     */
    class FddEncryption{

        public $key =FddConfig::AppSecret;

        /**
         * 兼容PHP7.2 3DES加密
         * @param $message
         * @return string
         */
        public  function encrypt($message){
            return $str  = bin2hex(openssl_encrypt($message, "des-ede3", $this->key,1));
        }
        /**
         * 通用msg_digest加密函数
         * @param $param
         * @param $enc
         * @return string
         */
        public static function GeneralDigest($param,$enc)
        {
            $value = $param->GetValues();
            $md5Str = $param->GetTimestamp();
            $sha1Str = FddConfig::AppSecret;
            foreach ($enc as $k => $v)
            {
                switch ($k){
                    case "md5":
                        foreach ($v as $md5Key => $md5Value){
                            if(isset($value[$md5Value])){
                                $md5Str.= $value[$md5Value];
                            }
                        }
                        break;
                    case "sha1":
                        foreach ($v as $sha1Key => $sha1Value){
                            if(isset($value[$sha1Value])) {
                                $sha1Str .= $value[$sha1Value];
                            }
                        }
                        break;
                }
            }
            $enc = base64_encode(strtoupper(sha1(FddConfig::AppId.strtoupper(md5($md5Str)).strtoupper(sha1($sha1Str)))));
         
            return $enc;
        }
        /**
         * 数组参数转字符串格式
         * @param $Array
         * @return string
         */
        public function ArrayParamToStr($Array)
        {
            $Str = "?";
            if (!empty($Array))
            {
                foreach($Array as $k => $v){
                    $Str .= $k."=".$v."&";
                }
            }
            return trim($Str,"&");

        }

    
    /**
     * 合同生成msg_digest加密
     * @param FddTemplate $param
     * @return string
     */
    public static function ContractDigest(FddTemplate $param)
    {
        $sha1 = FddConfig::AppSecret.$param->GetTemplate_id().$param->GetContract_id();
        $enc = base64_encode(strtoupper(sha1(FddConfig::AppId.strtoupper(md5($param->GetTimestamp())).strtoupper(sha1($sha1)).$param->GetParameter_map())));
        return $enc;
    }
    
    /**
     * 文档签署接口（手动签） msg_digest加密 
     * @param FddSignContract $param
     * @return string
     */
    public static function ExtsignDigest(FddSignContract $param)
    {
        $sha1 = FddConfig::AppSecret.$param->GetCustomer_id();
        $enc = base64_encode(strtoupper(sha1(FddConfig::AppId.strtoupper(md5($param->GetTransaction_id().$param->GetTimestamp())).strtoupper(sha1($sha1)))));
        return $enc;
    }
    
    /**
     * 文档签署接口（含有效期和次数限制） msg_digest加密 
     * @param FddSignContract $param
     * @return string
     */
    public static function ExtsignValiityDigest(FddSignContract $param)
    {
        $sha1 = FddConfig::AppSecret.$param->GetCustomer_id();
        $enc = base64_encode(strtoupper(sha1(FddConfig::AppId.strtoupper(md5($param->GetTransaction_id().$param->GetTimestamp().$param->GetValidity().$param->GetQuantity())).strtoupper(sha1($sha1)))));
        return $enc;
    }
    
    }
?>