<?php
/**
 * 特約商店串接-直接交易-虛擬帳號
 */
final class StoreECollection
{
    /**
     * 特約商店商務代號
     * @var string
     */
    public $storeUid = "289151880002";
    /**
     * 特約商店金鑰或認證碼
     * @var string
     */
    public $storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    /**
     * 串接交易位置
     * @var string
     */
    public $url = "https://pay.usecase.cc/api/init";
    /**
     * 取得串接欄位資料
     * @return array
     */
    public function getRawData()
    {
        $rawData = array();
        $rawData['store_uid'] = $this->storeUid;
        $rawData['items'] = [['id' => '1',
            'name' => '商品名稱',
            'cost' => '10',
            'amount' => '1',
            'total' => '10']];
        $rawData['cost'] = 10;
        $rawData['user_id'] = "phper";
        $rawData['order_id'] = "1234567890";
        $rawData['ip'] = "127.0.0.1"; // 此為消費者IP，會做為驗證用
        $rawData['pfn'] = "E_COLLECTION";
        $rawData['limit_pay_days'] = 7;
        $rawData['supplier_code'] = "B2";

        return $rawData;
    }
    /**
     * 取得服務位置
     * @return array
     */
    public function getService()
    {
        return array(
            'service_name' => 'api',
            'cmd' => 'api/transaction'
        );
    }
    /**
     * AES 256 加密
     * @param array $fields
     * @param string $key
     * @return string
     */
    public function encrypt($fields, $key)
    {
        $data = json_encode($fields);
        $size = openssl_cipher_iv_length('AES-256-CBC');
        $iv   = openssl_random_pseudo_bytes($size);
        $data = openssl_encrypt($data, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
        $data = base64_encode($iv . $data);
        return $data;
    }
    /**
     * 資料 POST 到主機
     * @param array $postData
     * @return mixed
     */
    public function post($postData = [])
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, $this->url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }
    /**
     * 取得送出欄位資料
     * @return array
     */
    public function getPostData ()
    {
        $postData = array();
        $postData['store_uid'] = $this->storeUid;
        $postData['service'] = $this->encrypt($this->getService(), $this->storeKey);
        $postData['encry_data'] = $this->encrypt($this->getRawData(), $this->storeKey);
        return $postData;
    }
    /**
     * 執行
     */
    public function run()
    {
        $json = $this->post($this->getPostData());
        echo $json;
    }
}

$StoreECollection = new StoreECollection();
$StoreECollection->run();
?>

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Collections;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.Dynamic;
/// <summary>
/// 建議使用.net framework4.5以上版本
/// 1.請透過NuGet安裝Newtonsoft.Json，若.net framework小於4.5請安裝Newtonsoft.Json 7.0以下版本
/// 2.若貴司.net framework小於4 可能無法使用dynamic，若是自行組陣列
/// 3.若貴司.net framework小於3.5 可能無法使用AES類別，若是參閱微軟網站使用較舊方式進行加密
/// 4.若貴司.net framework小於3.5 可能沒有Linq可使用，故data只能組字串，Newtonsoft.Json也可能無法使用
/// </summary>
namespace MyPay {
    /// <summary>
    /// 特約商店串接-直接交易-虛擬帳號
    /// </summary>
    public class StoreECollection {
        /// <summary>
        /// 特約商店商務代號
        /// </summary>
        public string storeUid = "289151880002";
        /// <summary>
        /// 特約商店金鑰或認證碼
        /// </summary>
        public string storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
        /// <summary>
        /// 串接交易位置
        /// </summary>
        public string url = "https://pay.usecase.cc/api/init";
        /// <summary>
        /// 執行
        /// </summary>
        static void Main() {
            StoreECollection simulator = new StoreECollection();
            //僅限走https的Tls 1.2以上版本
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            //發送至遠端
            var result = simulator.Post(simulator.GetPostData());

            System.Console.WriteLine(result);
        }
        /// <summary>
        /// 取得串接欄位資料
        /// </summary>
        private dynamic GetRawData() {

            ArrayList items = new ArrayList();

            dynamic item = new ExpandoObject();
            item.id = "1";
            item.name = "商品名稱";
            item.cost = "10";
            item.amount = "1";
            item.total = "10";

            items.Add(item);

            dynamic rawData = new ExpandoObject();
            rawData.store_uid = this.storeUid;
            rawData.items = items;
            rawData.cost = "10";
            rawData.user_id = "phper";
            rawData.order_id = "1234567890";
            rawData.ip = "127.0.0.1"; // 此為消費者IP，會做為驗證用
            rawData.pfn = "E_COLLECTION";
            rawData.limit_pay_days = "7";
            rawData.supplier_code = "B2";

            return rawData;
        }
        /// <summary>
        /// 取得服務位置
        /// </summary>
        private ServiceRequest GetService() {
            ServiceRequest rawData = new ServiceRequest();
            rawData.service_name = "api";
            rawData.cmd = "api/transaction";
            return rawData;
        }
        /// <summary>
        /// 取得送出欄位資料
        /// </summary>
        private NameValueCollection GetPostData() {
            string data_json = JsonConvert.SerializeObject(GetRawData(), Formatting.None);
            string svr_json = JsonConvert.SerializeObject(GetService(), Formatting.None);; //依API種類調整

            //產生AES向量
            var IV = GetBytesIV();

            //進行加密
            var data_encode = Encrypt(data_json, this.storeKey, IV);
            var svr_encode = Encrypt(svr_json, this.storeKey, IV);

            //請注意使用的 Http Post 套件是否會自動加上UrlEncode，本Post範例為原始方式，故須加上UrlEncode
            //若自行使用的套件會自動補上UrlEncode，則請忽略下面的UrlEncode，避免做了兩次UrlEncode
            string data_toUrlEncode = HttpUtility.UrlEncode(data_encode);
            string svr_toUrlEncode = HttpUtility.UrlEncode(svr_encode);

            NameValueCollection postData = new NameValueCollection();
            postData["store_uid"] = this.storeUid;
            postData["service"] = svr_toUrlEncode;
            postData["encry_data"] = data_toUrlEncode;
            return postData;
        }
        /// <summary>
        /// AES 256 加密
        /// </summary>
        /// <param name="data"></param>
        /// <param name="key"></param>
        /// <param name="byteIV"></param>
        /// <returns></returns>
        private string Encrypt(string data, string key, byte[] byteIV) {
            var byteKey = System.Text.Encoding.UTF8.GetBytes(key);
            var enBytes = AES_Encrypt(data, byteKey, byteIV);
            return Convert.ToBase64String(BytesAdd(byteIV, enBytes));
        }
        /// <summary>
        /// AES 256 加密處理
        /// </summary>
        /// <param name="original"></param>
        /// <param name="key"></param>
        /// <param name="iv"></param>
        /// <returns></returns>
        private byte[] AES_Encrypt(string original, byte[] key, byte[] iv) {
            try {
                var data = Encoding.UTF8.GetBytes(original);

                var cipher = Aes.Create().CreateEncryptor(key, iv);

                var de = cipher.TransformFinalBlock(data, 0, data.Length);
                return de;
            } catch {
                return null;
            }
        }
        /// <summary>
        /// 轉換Bytes
        /// </summary>
        /// <param name="a"></param>
        /// <param name="arryB"></param>
        /// <returns></returns>
        private byte[] BytesAdd(byte[] a, params byte[][] arryB) {
            List < byte > c = new List < byte > ();
            c.AddRange(a);
            arryB.ToList().ForEach(b => {
                c.AddRange(b);
            });
            return c.ToArray();
        }
        /// <summary>
        /// 產生AES的IV
        /// </summary>
        /// <returns></returns>
        private static byte[] GetBytesIV() {
            var aes = System.Security.Cryptography.AesCryptoServiceProvider.Create();
            aes.KeySize = 256;
            aes.GenerateIV();
            return aes.IV;
        }
        /// <summary>
        /// 資料 POST 到主機
        /// </summary>
        /// <param name="pars"></param>
        /// <returns></returns>
        private string Post(NameValueCollection pars) {
            string result = string.Empty;
            string param = string.Empty;
            if (pars.Count > 0) {
                pars.AllKeys.ToList().ForEach(key => {
                    param += key + "=" + pars[key] + "&";
                });
                if (param[param.Length - 1] == '&') {
                    param = param.Remove(param.Length - 1);
                }
            }
            byte[] bs = Encoding.UTF8.GetBytes(param);

            try {
                HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create(this.url);
                req.Method = "POST";
                req.ContentType = "application/x-www-form-urlencoded";
                req.ContentLength = bs.Length;
                using(Stream reqStream = req.GetRequestStream()) {
                    reqStream.Write(bs, 0, bs.Length);
                }
                using(WebResponse wr = req.GetResponse()) {
                    Encoding myEncoding = Encoding.GetEncoding("UTF-8");
                    using(StreamReader myStreamReader = new StreamReader(wr.GetResponseStream(), myEncoding)) {
                        result = myStreamReader.ReadToEnd();
                    }
                }

                req = null;
            } catch (WebException ex) {
                throw new WebException(ex.Message + "params : " + param, ex, ex.Status, ex.Response);
            }
            return result;
        }


    }
    /// <summary>
    /// 串接服務請求欄位
    /// </summary>
    public class ServiceRequest {
        public string service_name { get; set; }
        public string cmd { get; set; }
    }
}

import com.fasterxml.jackson.databind.ObjectMapper;
import java.net.URLEncoder;
import java.util.*;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import static java.nio.charset.StandardCharsets.UTF_8;
import org.spongycastle.crypto.engines.AESEngine;
import org.spongycastle.crypto.modes.CBCBlockCipher;
import org.spongycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.spongycastle.crypto.params.KeyParameter;
import org.spongycastle.crypto.params.ParametersWithIV;
import java.security.SecureRandom;
/**
 * 特約商店串接-直接交易-虛擬帳號
 * 1. jackson-core 下載 https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core
 * 2. jackson-databind 下載 https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind
 * 3. jackson-annotations 下載 https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations
 * 4. Spongy Castle 下載 https://mvnrepository.com/artifact/com.madgag.spongycastle/core
 */
public class StoreECollection {
    /**
     * 特約商店商務代號
     */
    String storeUid = "289151880002";
    /**
     * 特約商店金鑰或認證碼
     */
    String storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    /**
     * 串接交易位置
     */
    String url = "https://pay.usecase.cc/api/init";
    /**
     * 執行
     * @param  args
     */
    public static void main(String[] args) {
        StoreECollection simulator = new StoreECollection();
        String json = simulator.post(simulator.getPostData());
        System.out.print(json);
    }

    @SuppressWarnings(value = { "unchecked", "deprecation" })
    /**
     * 取得串接欄位資料
     * @return 串接原始資料
     */
    public Map getRawData() {

        ArrayList items = new ArrayList();

        Map<Object, Object> item = new HashMap<Object, Object>();
        item.put("id", "1");
        item.put("name", "商品名稱");
        item.put("cost", "10");
        item.put("amount", "1");
        item.put("total", "10");
        items.add(item);

        Map<Object, Object> rawData = new HashMap<Object, Object>();
        rawData.put("store_uid", this.storeUid);
        rawData.put("items", items);
        rawData.put("cost", "10");
        rawData.put("user_id", "phper");
        rawData.put("order_id", "1234567890");
        rawData.put("ip", "127.0.0.1"); // 此為消費者IP，會做為驗證用
        rawData.put("pfn", "E_COLLECTION");
        rawData.put("limit_pay_days", "7");
        rawData.put("supplier_code", "B2");

        return rawData;
    }
    /**
     * 取得服務位置
     * @return 串接服務資料
     */
    public Map getService() {
        Map<Object, Object> rawData = new HashMap<Object, Object>();
        rawData.put("service_name", "api");
        rawData.put("cmd", "api/transaction");
        return rawData;
    }
    /**
     * AES 256 加密
     * @param rawData 原始資料
     * @param AesKey AES256金鑰字串
     * @return 轉換成Base64資料
     */
    public String encrypt(Map rawData, String AesKey) {

        try {
            ObjectMapper objMapper = new ObjectMapper();

            byte[] data = objMapper.writeValueAsString(rawData).getBytes(UTF_8);
            byte[] key = AesKey.getBytes(UTF_8);

            // 16 bytes is the IV size for AES256
            PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(
                    new CBCBlockCipher(new AESEngine()));
            // Random iv
            SecureRandom rng = new SecureRandom();
            byte[] ivBytes = new byte[16];
            rng.nextBytes(ivBytes);

            cipher.init(true, new ParametersWithIV(new KeyParameter(key),
                    ivBytes));
            byte[] outBuf = new byte[cipher.getOutputSize(data.length)];

            int processed = cipher
                    .processBytes(data, 0, data.length, outBuf, 0);
            processed += cipher.doFinal(outBuf, processed);

            byte[] outBuf2 = new byte[processed + 16]; // Make room for iv
            System.arraycopy(ivBytes, 0, outBuf2, 0, 16); // Add iv
            System.arraycopy(outBuf, 0, outBuf2, 16, processed);

            Base64.Encoder encoder = Base64.getEncoder();
            String base64 = encoder.encodeToString(outBuf2);
            return base64;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    /**
     * 資料 POST 到主機
     * @param qstr 串接資料
     * @return 服務回傳JSON資訊
     */
    public String post(String qstr) {
        String result = "";
        try {
            // 資料
            byte[] qstr_bytes = qstr.getBytes(StandardCharsets.UTF_8);

            URL iurl = new URL(this.url);
            SSLContext sc = SSLContext.getInstance("TLSv1.2"); // $NON-NLS-1$
            sc.init(null, null, new java.security.SecureRandom());

            HttpsURLConnection con = (HttpsURLConnection) iurl.openConnection();
            con.setSSLSocketFactory(sc.getSocketFactory());
            con.setRequestMethod("POST");
            con.setRequestProperty("Content-Type",
                    "application/x-www-form-urlencoded");
            con.setRequestProperty("Content-Length",
                    String.valueOf(qstr_bytes.length));
            con.setRequestProperty("Accept-Charset", "UTF-8");

            con.setDoOutput(true);
            con.setDoInput(true);

            con.getOutputStream()
                    .write(qstr.getBytes(Charset.forName("UTF-8")));
            con.getOutputStream().flush();

            BufferedReader in = new BufferedReader(new InputStreamReader(
                    con.getInputStream(), "UTF-8"));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine + "\r\n");
            }

            try {
                result = response.toString();
            } finally {
                in.close();
            }
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
        return result;
    }
    /**
     * 取得送出欄位資料
     * @return POST完整資料
     */
    public String getPostData() {
        String postData = "";
        try {
            // Base64需要使用UrlEncode做傳輸
            String data_toUrlEncode = URLEncoder.encode(
                    this.encrypt(this.getRawData(), this.storeKey), "UTF-8");
            String svr_toUrlEncode = URLEncoder.encode(
                    this.encrypt(this.getService(), this.storeKey), "UTF-8");

            postData = "store_uid=" + this.storeUid + "&service="
                    + svr_toUrlEncode + "&encry_data=" + data_toUrlEncode;
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
        return postData;
    }
}

const crypto = require('crypto');
const httpRequest = require('https');

/**
 * 特約商店串接-直接交易-虛擬帳號
 */
function StoreECollection() {
    // 特約商店商務代號
    this.storeUid = "289151880002";
    // 特約商店金鑰或認證碼
    this.storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    // 串接交易位置
    this.url = "https://pay.usecase.cc/api/init";
};
/**
 * 取得串接欄位資料
 */
StoreECollection.prototype.getRawData = function () {
    return {
        store_uid: this.storeUid,
        items: [{
            'id': "1",
            'name': "商品名稱",
            'cost': "10",
            'amount': "1",
            'total': "10"
        }],
        cost: "10",
        user_id: "phper",
        order_id: "1234567890",
        ip: "127.0.0.1",
        pfn: "E_COLLECTION",
        limit_pay_days: 7,
        supplier_code: "B2"
    };
};
/**
 * 取得服務位置
 */
StoreECollection.prototype.getService = function () {
    return {
        service_name: "api",
        cmd: "api/transaction"
    };
};
/**
 * AES 256 加密
 */
StoreECollection.prototype.encrypt = function (fields, key) {
    let eData = JSON.stringify(fields);
    const blockSize = 16;
    const iv = crypto.randomBytes(blockSize);
    const encryptor = crypto.createCipheriv('aes-256-cbc', key, iv);
    let tmpCipher = encryptor.update(Buffer.from(eData));
    let finalCipher = encryptor.final();
    const tempData = Buffer.concat([tmpCipher, finalCipher], tmpCipher.length + finalCipher.length);
    let data = Buffer.concat([iv, tempData], iv.length + tempData.length).toString('base64');
    return data;
};
/**
 * 資料 POST 到主機
 */
StoreECollection.prototype.post = function (postData) {
    return new Promise((res, rej) => {
        let options = {
            method: "POST",
            headers: {
                "Content-Type": "application/json"
            },
            rejectUnauthorized: false
        };

        let send_process = httpRequest.request(this.url, options, (api_res) => {
            let res_data = "";
            api_res.on('data', (tmp_data) => {
                res_data += tmp_data;
            });
            api_res.on('end', () => {
                res(res_data);
            });
        });

        send_process.write(JSON.stringify(postData));
        send_process.end();
    });
};
/**
 * 取得送出欄位資料
 */
StoreECollection.prototype.getPostData = function () {
    return {
        "store_uid": this.storeUid,
        "service": this.encrypt(this.getService(), this.storeKey),
        "encry_data": this.encrypt(this.getRawData(), this.storeKey)
    };
};
/**
 * 執行
 */
StoreECollection.prototype.run = async function () {
    json = await this.post(this.getPostData())
    console.log(json);
};

StoreECollection = new StoreECollection();
StoreECollection.run();

import json
import base64
import requests
from Crypto.Cipher import AES
from Crypto.Util import Padding
from Crypto.Random import get_random_bytes

"""特約商店串接-直接交易-超商代碼
"""
class StoreCStoreCode:
    # 特約商店商務代號
    storeUid = "289151880002"
    # 特約商店金鑰或認證碼
    storeKey = b"KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx"
    # 串接交易位置
    url = "https://pay.usecase.cc/api/init"

    def getRawData(self):
        """取得串接欄位資料

        Returns:
            {dict}: 欄位資料
        """
        rawData = {
            'store_uid': self.storeUid,
            'items': [{
                'id': "1",
                'name': "商品名稱",
                'cost': "10",
                'amount': "1",
                'total': "10"
            }],
            'cost': "10",
            'user_id': "phper",
            'order_id': "1234567890",
            'ip': "127.0.0.1",
            'pfn': "CSTORECODE",
            'limit_pay_days': "3",
            'supplier_code': "S0"
        }
        return rawData

    def getService(self):
        """取得服務位置

        Returns:
            {dict}: 服務位置資料
        """
        return {
            'service_name': 'api',
            'cmd': 'api/transaction'
        }

    def encrypt(self, fields, key):
        """AES 256 加密

        Args:
            fields {dict}: 欄位資料
            key {bytes}: AES金鑰

        Returns:
            {string}: 加密資料
        """
        data = json.dumps(fields, separators=(',', ':'))
        data = Padding.pad(data.encode('utf-8'), AES.block_size)
        iv = get_random_bytes(AES.block_size)
        cipher = AES.new(key, AES.MODE_CBC, iv)
        data = cipher.encrypt(data)
        data = base64.b64encode(iv + data)
        return data

    def post(self, postData):
        """資料 POST 到主機

        Args:
            postData {dict}: 欄位資料

        Returns:
            {string}: JSON資料
        """
        result = requests.post(self.url, postData)
        return result.text

    def getPostData(self):
        """取得送出欄位資料

        Returns:
            {dict}: 欄位資料
        """
        postData = {
            'store_uid': self.storeUid,
            'service': self.encrypt(self.getService(), self.storeKey),
            'encry_data': self.encrypt(self.getRawData(), self.storeKey)
        }
        return postData

    def run(self):
        """執行
        """
        json = self.post(self.getPostData())
        print(json)

StoreCStoreCode = StoreCStoreCode()
StoreCStoreCode.run()

{
    "code": "270",
    "msg": "執行成功。",
    "uid": 75568,
    "key": "3bb205d8f2c315d073fc62c5de8d9761",
    "finishtime": "",
    "cardno": "",
    "acode": "",
    "order_id": "1234567890",
    "user_id": "phper",
    "cost": 10,
    "currency": "TWD",
    "actual_cost": 0,
    "actual_currency": "TWD",
    "pfn": "E_COLLECTION",
    "trans_type": 1,
    "result_type": 4,
    "result_content": "{\n    \"PinCode\": \"1255100349000018\",\n    \"LimitDate\": \"20201214113117\",\n    \"BankCode\": \"006\"\n}",
    "echo_0": "",
    "echo_1": "",
    "echo_2": "",
    "echo_3": "",
    "echo_4": ""
}

<?php
/**
 * 特約商店串接-直接交易-超商代碼
 */
final class StoreCStoreCode
{
    /**
     * 特約商店商務代號
     * @var string
     */
    public $storeUid = "289151880002";
    /**
     * 特約商店金鑰或認證碼
     * @var string
     */
    public $storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    /**
     * 串接交易位置
     * @var string
     */
    public $url = "https://pay.usecase.cc/api/init";
    /**
     * 取得串接欄位資料
     * @return array
     */
    public function getRawData()
    {
        $rawData = array();
        $rawData['store_uid'] = $this->storeUid;
        $rawData['items'] = [['id' => '1',
            'name' => '商品名稱',
            'cost' => '10',
            'amount' => '1',
            'total' => '10']];
        $rawData['cost'] = 10;
        $rawData['user_id'] = "phper";
        $rawData['order_id'] = "1234567890";
        $rawData['ip'] = "127.0.0.1"; // 此為消費者IP，會做為驗證用
        $rawData['pfn'] = "CSTORECODE";
        $rawData['limit_pay_days'] = 3;
        $rawData['supplier_code'] = "S0";

        return $rawData;
    }
    /**
     * 取得服務位置
     * @return array
     */
    public function getService()
    {
        return array(
            'service_name' => 'api',
            'cmd' => 'api/transaction'
        );
    }
    /**
     * AES 256 加密
     * @param array $fields
     * @param string $key
     * @return string
     */
    public function encrypt($fields, $key)
    {
        $data = json_encode($fields);
        $size = openssl_cipher_iv_length('AES-256-CBC');
        $iv   = openssl_random_pseudo_bytes($size);
        $data = openssl_encrypt($data, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
        $data = base64_encode($iv . $data);
        return $data;
    }
    /**
     * 資料 POST 到主機
     * @param array $postData
     * @return mixed
     */
    public function post($postData = [])
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, $this->url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }
    /**
     * 取得送出欄位資料
     * @return array
     */
    public function getPostData ()
    {
        $postData = array();
        $postData['store_uid'] = $this->storeUid;
        $postData['service'] = $this->encrypt($this->getService(), $this->storeKey);
        $postData['encry_data'] = $this->encrypt($this->getRawData(), $this->storeKey);
        return $postData;
    }
    /**
     * 執行
     */
    public function run()
    {
        $json = $this->post($this->getPostData());
        echo $json;
    }
}

$StoreCStoreCode = new StoreCStoreCode();
$StoreCStoreCode->run();
?>

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Collections;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.Dynamic;
/// <summary>
/// 建議使用.net framework4.5以上版本
/// 1.請透過NuGet安裝Newtonsoft.Json，若.net framework小於4.5請安裝Newtonsoft.Json 7.0以下版本
/// 2.若貴司.net framework小於4 可能無法使用dynamic，若是自行組陣列
/// 3.若貴司.net framework小於3.5 可能無法使用AES類別，若是參閱微軟網站使用較舊方式進行加密
/// 4.若貴司.net framework小於3.5 可能沒有Linq可使用，故data只能組字串，Newtonsoft.Json也可能無法使用
/// </summary>
namespace MyPay {
    /// <summary>
    /// 特約商店串接-直接交易-虛擬帳號
    /// </summary>
    public class StoreCStoreCode {
        /// <summary>
        /// 特約商店商務代號
        /// </summary>
        public string storeUid = "289151880002";
        /// <summary>
        /// 特約商店金鑰或認證碼
        /// </summary>
        public string storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
        /// <summary>
        /// 串接交易位置
        /// </summary>
        public string url = "https://pay.usecase.cc/api/init";
        /// <summary>
        /// 執行
        /// </summary>
        static void Main() {
            StoreCStoreCode simulator = new StoreCStoreCode();
            //僅限走https的Tls 1.2以上版本
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            //發送至遠端
            var result = simulator.Post(simulator.GetPostData());

            System.Console.WriteLine(result);
        }
        /// <summary>
        /// 取得串接欄位資料
        /// </summary>
        private dynamic GetRawData() {

            ArrayList items = new ArrayList();

            dynamic item = new ExpandoObject();
            item.id = "1";
            item.name = "商品名稱";
            item.cost = "10";
            item.amount = "1";
            item.total = "10";

            items.Add(item);

            dynamic rawData = new ExpandoObject();
            rawData.store_uid = this.storeUid;
            rawData.items = items;
            rawData.cost = "10";
            rawData.user_id = "phper";
            rawData.order_id = "1234567890";
            rawData.ip = "127.0.0.1"; // 此為消費者IP，會做為驗證用
            rawData.pfn = "CSTORECODE";
            rawData.limit_pay_days = "3";
            rawData.supplier_code = "S0";

            return rawData;
        }
        /// <summary>
        /// 取得服務位置
        /// </summary>
        private ServiceRequest GetService() {
            ServiceRequest rawData = new ServiceRequest();
            rawData.service_name = "api";
            rawData.cmd = "api/transaction";
            return rawData;
        }
        /// <summary>
        /// 取得送出欄位資料
        /// </summary>
        private NameValueCollection GetPostData() {
            string data_json = JsonConvert.SerializeObject(GetRawData(), Formatting.None);
            string svr_json = JsonConvert.SerializeObject(GetService(), Formatting.None);; //依API種類調整

            //產生AES向量
            var IV = GetBytesIV();

            //進行加密
            var data_encode = Encrypt(data_json, this.storeKey, IV);
            var svr_encode = Encrypt(svr_json, this.storeKey, IV);

            //請注意使用的 Http Post 套件是否會自動加上UrlEncode，本Post範例為原始方式，故須加上UrlEncode
            //若自行使用的套件會自動補上UrlEncode，則請忽略下面的UrlEncode，避免做了兩次UrlEncode
            string data_toUrlEncode = HttpUtility.UrlEncode(data_encode);
            string svr_toUrlEncode = HttpUtility.UrlEncode(svr_encode);

            NameValueCollection postData = new NameValueCollection();
            postData["store_uid"] = this.storeUid;
            postData["service"] = svr_toUrlEncode;
            postData["encry_data"] = data_toUrlEncode;
            return postData;
        }
        /// <summary>
        /// AES 256 加密
        /// </summary>
        /// <param name="data"></param>
        /// <param name="key"></param>
        /// <param name="byteIV"></param>
        /// <returns></returns>
        private string Encrypt(string data, string key, byte[] byteIV) {
            var byteKey = System.Text.Encoding.UTF8.GetBytes(key);
            var enBytes = AES_Encrypt(data, byteKey, byteIV);
            return Convert.ToBase64String(BytesAdd(byteIV, enBytes));
        }
        /// <summary>
        /// AES 256 加密處理
        /// </summary>
        /// <param name="original"></param>
        /// <param name="key"></param>
        /// <param name="iv"></param>
        /// <returns></returns>
        private byte[] AES_Encrypt(string original, byte[] key, byte[] iv) {
            try {
                var data = Encoding.UTF8.GetBytes(original);

                var cipher = Aes.Create().CreateEncryptor(key, iv);

                var de = cipher.TransformFinalBlock(data, 0, data.Length);
                return de;
            } catch {
                return null;
            }
        }
        /// <summary>
        /// 轉換Bytes
        /// </summary>
        /// <param name="a"></param>
        /// <param name="arryB"></param>
        /// <returns></returns>
        private byte[] BytesAdd(byte[] a, params byte[][] arryB) {
            List < byte > c = new List < byte > ();
            c.AddRange(a);
            arryB.ToList().ForEach(b => {
                c.AddRange(b);
            });
            return c.ToArray();
        }
        /// <summary>
        /// 產生AES的IV
        /// </summary>
        /// <returns></returns>
        private static byte[] GetBytesIV() {
            var aes = System.Security.Cryptography.AesCryptoServiceProvider.Create();
            aes.KeySize = 256;
            aes.GenerateIV();
            return aes.IV;
        }
        /// <summary>
        /// 資料 POST 到主機
        /// </summary>
        /// <param name="pars"></param>
        /// <returns></returns>
        private string Post(NameValueCollection pars) {
            string result = string.Empty;
            string param = string.Empty;
            if (pars.Count > 0) {
                pars.AllKeys.ToList().ForEach(key => {
                    param += key + "=" + pars[key] + "&";
                });
                if (param[param.Length - 1] == '&') {
                    param = param.Remove(param.Length - 1);
                }
            }
            byte[] bs = Encoding.UTF8.GetBytes(param);

            try {
                HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create(this.url);
                req.Method = "POST";
                req.ContentType = "application/x-www-form-urlencoded";
                req.ContentLength = bs.Length;
                using(Stream reqStream = req.GetRequestStream()) {
                    reqStream.Write(bs, 0, bs.Length);
                }
                using(WebResponse wr = req.GetResponse()) {
                    Encoding myEncoding = Encoding.GetEncoding("UTF-8");
                    using(StreamReader myStreamReader = new StreamReader(wr.GetResponseStream(), myEncoding)) {
                        result = myStreamReader.ReadToEnd();
                    }
                }

                req = null;
            } catch (WebException ex) {
                throw new WebException(ex.Message + "params : " + param, ex, ex.Status, ex.Response);
            }
            return result;
        }


    }
    /// <summary>
    /// 串接服務請求欄位
    /// </summary>
    public class ServiceRequest {
        public string service_name { get; set; }
        public string cmd { get; set; }
    }
}

import com.fasterxml.jackson.databind.ObjectMapper;
import java.net.URLEncoder;
import java.util.*;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import static java.nio.charset.StandardCharsets.UTF_8;
import org.spongycastle.crypto.engines.AESEngine;
import org.spongycastle.crypto.modes.CBCBlockCipher;
import org.spongycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.spongycastle.crypto.params.KeyParameter;
import org.spongycastle.crypto.params.ParametersWithIV;
import java.security.SecureRandom;
/**
 * 特約商店串接-直接交易-超商代碼
 * 1. jackson-core 下載 https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core
 * 2. jackson-databind 下載 https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind
 * 3. jackson-annotations 下載 https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations
 * 4. Spongy Castle 下載 https://mvnrepository.com/artifact/com.madgag.spongycastle/core
 */
public class StoreCStoreCode {
    /**
     * 特約商店商務代號
     */
    String storeUid = "289151880002";
    /**
     * 特約商店金鑰或認證碼
     */
    String storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    /**
     * 串接交易位置
     */
    String url = "https://pay.usecase.cc/api/init";
    /**
     * 執行
     * @param  args
     */
    public static void main(String[] args) {
        StoreCStoreCode simulator = new StoreCStoreCode();
        String json = simulator.post(simulator.getPostData());
        System.out.print(json);
    }

    @SuppressWarnings(value = { "unchecked", "deprecation" })
    /**
     * 取得串接欄位資料
     * @return 串接原始資料
     */
    public Map getRawData() {

        ArrayList items = new ArrayList();

        Map<Object, Object> item = new HashMap<Object, Object>();
        item.put("id", "1");
        item.put("name", "商品名稱");
        item.put("cost", "10");
        item.put("amount", "1");
        item.put("total", "10");
        items.add(item);

        Map<Object, Object> rawData = new HashMap<Object, Object>();
        rawData.put("store_uid", this.storeUid);
        rawData.put("items", items);
        rawData.put("cost", "10");
        rawData.put("user_id", "phper");
        rawData.put("order_id", "1234567890");
        rawData.put("ip", "127.0.0.1"); // 此為消費者IP，會做為驗證用
        rawData.put("pfn", "CSTORECODE");
        rawData.put("limit_pay_days", "3");
        rawData.put("supplier_code", "S0");

        return rawData;
    }
    /**
     * 取得服務位置
     * @return 串接服務資料
     */
    public Map getService() {
        Map<Object, Object> rawData = new HashMap<Object, Object>();
        rawData.put("service_name", "api");
        rawData.put("cmd", "api/transaction");
        return rawData;
    }
    /**
     * AES 256 加密
     * @param rawData 原始資料
     * @param AesKey AES256金鑰字串
     * @return 轉換成Base64資料
     */
    public String encrypt(Map rawData, String AesKey) {

        try {
            ObjectMapper objMapper = new ObjectMapper();

            byte[] data = objMapper.writeValueAsString(rawData).getBytes(UTF_8);
            byte[] key = AesKey.getBytes(UTF_8);

            // 16 bytes is the IV size for AES256
            PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(
                    new CBCBlockCipher(new AESEngine()));
            // Random iv
            SecureRandom rng = new SecureRandom();
            byte[] ivBytes = new byte[16];
            rng.nextBytes(ivBytes);

            cipher.init(true, new ParametersWithIV(new KeyParameter(key),
                    ivBytes));
            byte[] outBuf = new byte[cipher.getOutputSize(data.length)];

            int processed = cipher
                    .processBytes(data, 0, data.length, outBuf, 0);
            processed += cipher.doFinal(outBuf, processed);

            byte[] outBuf2 = new byte[processed + 16]; // Make room for iv
            System.arraycopy(ivBytes, 0, outBuf2, 0, 16); // Add iv
            System.arraycopy(outBuf, 0, outBuf2, 16, processed);

            Base64.Encoder encoder = Base64.getEncoder();
            String base64 = encoder.encodeToString(outBuf2);
            return base64;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    /**
     * 資料 POST 到主機
     * @param qstr 串接資料
     * @return 服務回傳JSON資訊
     */
    public String post(String qstr) {
        String result = "";
        try {
            // 資料
            byte[] qstr_bytes = qstr.getBytes(StandardCharsets.UTF_8);

            URL iurl = new URL(this.url);
            SSLContext sc = SSLContext.getInstance("TLSv1.2"); // $NON-NLS-1$
            sc.init(null, null, new java.security.SecureRandom());

            HttpsURLConnection con = (HttpsURLConnection) iurl.openConnection();
            con.setSSLSocketFactory(sc.getSocketFactory());
            con.setRequestMethod("POST");
            con.setRequestProperty("Content-Type",
                    "application/x-www-form-urlencoded");
            con.setRequestProperty("Content-Length",
                    String.valueOf(qstr_bytes.length));
            con.setRequestProperty("Accept-Charset", "UTF-8");

            con.setDoOutput(true);
            con.setDoInput(true);

            con.getOutputStream()
                    .write(qstr.getBytes(Charset.forName("UTF-8")));
            con.getOutputStream().flush();

            BufferedReader in = new BufferedReader(new InputStreamReader(
                    con.getInputStream(), "UTF-8"));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine + "\r\n");
            }

            try {
                result = response.toString();
            } finally {
                in.close();
            }
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
        return result;
    }
    /**
     * 取得送出欄位資料
     * @return POST完整資料
     */
    public String getPostData() {
        String postData = "";
        try {
            // Base64需要使用UrlEncode做傳輸
            String data_toUrlEncode = URLEncoder.encode(
                    this.encrypt(this.getRawData(), this.storeKey), "UTF-8");
            String svr_toUrlEncode = URLEncoder.encode(
                    this.encrypt(this.getService(), this.storeKey), "UTF-8");

            postData = "store_uid=" + this.storeUid + "&service="
                    + svr_toUrlEncode + "&encry_data=" + data_toUrlEncode;
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
        return postData;
    }
}

const crypto = require('crypto');
const httpRequest = require('https');

/**
 * 特約商店串接-直接交易-超商代碼
 */
function StoreCStoreCode() {
    // 特約商店商務代號
    this.storeUid = "289151880002";
    // 特約商店金鑰或認證碼
    this.storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    // 串接交易位置
    this.url = "https://pay.usecase.cc/api/init";
};
/**
 * 取得串接欄位資料
 */
StoreCStoreCode.prototype.getRawData = function () {
    return {
        store_uid: this.storeUid,
        items: [{
            'id': "1",
            'name': "商品名稱",
            'cost': "10",
            'amount': "1",
            'total': "10"
        }],
        cost: "10",
        user_id: "phper",
        order_id: "1234567890",
        ip: "127.0.0.1",
        pfn: "CSTORECODE",
        limit_pay_days: "3",
        supplier_code: "S0"
    };
};
/**
 * 取得服務位置
 */
StoreCStoreCode.prototype.getService = function () {
    return {
        service_name: "api",
        cmd: "api/transaction"
    };
};
/**
 * AES 256 加密
 */
StoreCStoreCode.prototype.encrypt = function (fields, key) {
    let eData = JSON.stringify(fields);
    const blockSize = 16;
    const iv = crypto.randomBytes(blockSize);
    const encryptor = crypto.createCipheriv('aes-256-cbc', key, iv);
    let tmpCipher = encryptor.update(Buffer.from(eData));
    let finalCipher = encryptor.final();
    const tempData = Buffer.concat([tmpCipher, finalCipher], tmpCipher.length + finalCipher.length);
    let data = Buffer.concat([iv, tempData], iv.length + tempData.length).toString('base64');
    return data;
};
/**
 * 資料 POST 到主機
 */
StoreCStoreCode.prototype.post = function (postData) {
    return new Promise((res, rej) => {
        let options = {
            method: "POST",
            headers: {
                "Content-Type": "application/json"
            },
            rejectUnauthorized: false
        };

        let send_process = httpRequest.request(this.url, options, (api_res) => {
            let res_data = "";
            api_res.on('data', (tmp_data) => {
                res_data += tmp_data;
            });
            api_res.on('end', () => {
                res(res_data);
            });
        });

        send_process.write(JSON.stringify(postData));
        send_process.end();
    });
};
/**
 * 取得送出欄位資料
 */
StoreCStoreCode.prototype.getPostData = function () {
    return {
        "store_uid": this.storeUid,
        "service": this.encrypt(this.getService(), this.storeKey),
        "encry_data": this.encrypt(this.getRawData(), this.storeKey)
    };
};
/**
 * 執行
 */
StoreCStoreCode.prototype.run = async function () {
    json = await this.post(this.getPostData())
    console.log(json);
};

StoreCStoreCode = new StoreCStoreCode();
StoreCStoreCode.run();

import json
import base64
import requests
from Crypto.Cipher import AES
from Crypto.Util import Padding
from Crypto.Random import get_random_bytes

"""特約商店串接-直接交易-虛擬帳號
"""
class StoreECollection:
    # 特約商店商務代號
    storeUid = "289151880002"
    # 特約商店金鑰或認證碼
    storeKey = b"KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx"
    # 串接交易位置
    url = "https://pay.usecase.cc/api/init"

    def getRawData(self):
        """取得串接欄位資料

        Returns:
            {dict}: 欄位資料
        """
        rawData = {
            'store_uid': self.storeUid,
            'items': [{
                'id': "1",
                'name': "商品名稱",
                'cost': "10",
                'amount': "1",
                'total': "10"
            }],
            'cost': "10",
            'user_id': "phper",
            'order_id': "1234567890",
            'ip': "127.0.0.1",
            'pfn': "E_COLLECTION",
            'limit_pay_days': 7,
            'supplier_code': "B2"
        }
        return rawData

    def getService(self):
        """取得服務位置

        Returns:
            {dict}: 服務位置資料
        """
        return {
            'service_name': 'api',
            'cmd': 'api/transaction'
        }

    def encrypt(self, fields, key):
        """AES 256 加密

        Args:
            fields {dict}: 欄位資料
            key {bytes}: AES金鑰

        Returns:
            {string}: 加密資料
        """
        data = json.dumps(fields, separators=(',', ':'))
        data = Padding.pad(data.encode('utf-8'), AES.block_size)
        iv = get_random_bytes(AES.block_size)
        cipher = AES.new(key, AES.MODE_CBC, iv)
        data = cipher.encrypt(data)
        data = base64.b64encode(iv + data)
        return data

    def post(self, postData):
        """資料 POST 到主機

        Args:
            postData {dict}: 欄位資料

        Returns:
            {string}: JSON資料
        """
        result = requests.post(self.url, postData)
        return result.text

    def getPostData(self):
        """取得送出欄位資料

        Returns:
            {dict}: 欄位資料
        """
        postData = {
            'store_uid': self.storeUid,
            'service': self.encrypt(self.getService(), self.storeKey),
            'encry_data': self.encrypt(self.getRawData(), self.storeKey)
        }
        return postData

    def run(self):
        """執行
        """
        json = self.post(self.getPostData())
        print(json)

StoreECollection = StoreECollection()
StoreECollection.run()

{
    "code": "260",
    "msg": "執行成功。",
    "uid": 75569,
    "key": "0696b3e97553b8b2d4bdd845e2663aec",
    "finishtime": "",
    "cardno": "",
    "acode": "",
    "order_id": "1234567890",
    "user_id": "phper",
    "cost": 10,
    "currency": "TWD",
    "actual_cost": 0,
    "actual_currency": "TWD",
    "pfn": "CSTORECODE",
    "trans_type": 1,
    "result_type": 4,
    "result_content": "{\n    \"PinCode\": \"201231V0000156\",\n    \"BarCode1\": \"091207KK1\",\n    \"BarCode2\": \"00201231V0000156\",\n    \"BarCode3\": \"114332000000010\",\n    \"LimitDate\": \"20201210113252\"\n}",
    "echo_0": "",
    "echo_1": "",
    "echo_2": "",
    "echo_3": "",
    "echo_4": ""
}

<?php
/**
 * 特約商店串接-直接交易-WebATM
 */
final class StoreWebATM
{
    /**
     * 特約商店商務代號
     * @var string
     */
    public $storeUid = "289151880002";
    /**
     * 特約商店金鑰或認證碼
     * @var string
     */
    public $storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
    /**
     * 串接交易位置
     * @var string
     */
    public $url = "https://pay.usecase.cc/api/init";
    /**
     * 取得串接欄位資料
     * @return array
     */
    public function getRawData()
    {
        $rawData = array();
        $rawData['store_uid'] = $this->storeUid;
        $rawData['items'] = [['id' => '1',
            'name' => '商品名稱',
            'cost' => '10',
            'amount' => '1',
            'total' => '10']];
        $rawData['cost'] = 10;
        $rawData['user_id'] = "phper";
        $rawData['order_id'] = "1234567890";
        $rawData['ip'] = "127.0.0.1"; // 此為消費者IP，會做為驗證用
        $rawData['pfn'] = "WEBATM";
        $rawData['supplier_code'] = "B2";

        return $rawData;
    }
    /**
     * 取得服務位置
     * @return array
     */
    public function getService()
    {
        return array(
            'service_name' => 'api',
            'cmd' => 'api/transaction'
        );
    }
    /**
     * AES 256 加密
     * @param array $fields
     * @param string $key
     * @return string
     */
    public function encrypt($fields, $key)
    {
        $data = json_encode($fields);
        $size = openssl_cipher_iv_length('AES-256-CBC');
        $iv   = openssl_random_pseudo_bytes($size);
        $data = openssl_encrypt($data, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
        $data = base64_encode($iv . $data);
        return $data;
    }
    /**
     * 資料 POST 到主機
     * @param array $postData
     * @return mixed
     */
    public function post($postData = [])
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, $this->url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }
    /**
     * 取得送出欄位資料
     * @return array
     */
    public function getPostData ()
    {
        $postData = array();
        $postData['store_uid'] = $this->storeUid;
        $postData['service'] = $this->encrypt($this->getService(), $this->storeKey);
        $postData['encry_data'] = $this->encrypt($this->getRawData(), $this->storeKey);
        return $postData;
    }
    /**
     * 執行
     */
    public function run()
    {
        $json = $this->post($this->getPostData());
        echo $json;
    }
}

$StoreWebATM = new StoreWebATM();
$StoreWebATM->run();
?>

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Collections;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.Dynamic;
/// <summary>
/// 建議使用.net framework4.5以上版本
/// 1.請透過NuGet安裝Newtonsoft.Json，若.net framework小於4.5請安裝Newtonsoft.Json 7.0以下版本
/// 2.若貴司.net framework小於4 可能無法使用dynamic，若是自行組陣列
/// 3.若貴司.net framework小於3.5 可能無法使用AES類別，若是參閱微軟網站使用較舊方式進行加密
/// 4.若貴司.net framework小於3.5 可能沒有Linq可使用，故data只能組字串，Newtonsoft.Json也可能無法使用
/// </summary>
namespace MyPay {
    /// <summary>
    /// 特約商店串接-直接交易-WebATM
    /// </summary>
    public class StoreWebATM {
        /// <summary>
        /// 特約商店商務代號
        /// </summary>
        public string storeUid = "289151880002";
        /// <summary>
        /// 特約商店金鑰或認證碼
        /// </summary>
        public string storeKey = "KYTjd9ACcjGaTK6V3zWmMkyrQS08Ndcx";
        /// <summary>
        /// 串接交易位置
        /// </summary>
        public string url = "https://pay.usecase.cc/api/init";
        /// <summary>
        /// 執行
        /// </summary>
        static void Main() {
            StoreWebATM simulator = new StoreWebATM();
            //僅限走https的Tls 1.2以上版本
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            //發送至遠端
            var result = simulator.Post(simulator.GetPostData());

            System.Console.WriteLine(result);
        }
        /// <summary>
        /// 取得串接欄位資料
        /// </summary>
        private dynamic GetRawData() {

            ArrayList items = new ArrayList();

            dynamic item = new ExpandoObject();
            item.id = "1";
            item.name = "商品名稱";
            item.cost = "10";
            item.amount = "1";
            item.total = "10";

            items.Add(item);

            dynamic rawData = new ExpandoObject();
            rawData.store_uid = this.storeUid;
            rawData.items = items;
            rawData.cost = "10";
            rawData.user_id = "phper";
            rawData.order_id = "1234567890";
            rawData.ip = "127.0.0.1"; // 此為消費者IP，會做為驗證用
            rawData.pfn = "WEBATM";
            rawData.supplier_code = "B2";

            return rawData;
        }
        /// <summary>
        /// 取得服務位置
        /// </summary>
        private ServiceRequest GetService() {
            ServiceRequest rawData = new ServiceRequest();
            rawData.service_name = "api";
            rawData.cmd = "api/transaction";
            return rawData;
        }
        /// <summary>
        /// 取得送出欄位資料
        /// </summary>
        private NameValueCollection GetPostData() {
            string data_json = JsonConvert.SerializeObject(GetRawData(), Formatting.None);
            string svr_json = JsonConvert.SerializeObject(GetService(), Formatting.None);; //依API種類調整

            //產生AES向量
            var IV = GetBytesIV();

            //進行加密
            var data_encode = Encrypt(data_json, this.storeKey, IV);
            var svr_encode = Encrypt(svr_json, this.storeKey, IV);

            //請注意使用的 Http Post 套件是否會自動加上UrlEncode，本Post範例為原始方式，故須加上UrlEncode
            //若自行使用的套件會自動補上UrlEncode，則請忽略下面的UrlEncode，避免做了兩次UrlEncode
            string data_toUrlEncode = HttpUtility.UrlEncode(data_encode);
            string svr_toUrlEncode = HttpUtility.UrlEncode(svr_encode);

            NameValueCollection postData = new NameValueCollection();
            postData["store_uid"] = this.storeUid;
            postData["service"] = svr_toUrlEncode;
            postData["encry_data"] = data_toUrlEncode;
            return postData;
        }
        /// <summary>
        /// AES 256 加密
        /// </summary>
        /// <param name="data"></param>
        /// <param name="key"></param>
        /// <param name="byteIV"></param>
        /// <returns></returns>
        private string Encrypt(string data, string key, byte[] byteIV) {
            var byteKey = System.Text.Encoding.UTF8.GetBytes(key);
            var enBytes = AES_Encrypt(data, byteKey, byteIV);
            return Convert.ToBase64String(BytesAdd(byteIV, enBytes));
        }
        /// <summary>
        /// AES 256 加密處理
        /// </summary>
        /// <param name="original"></param>
        /// <param name="key"></param>
        /// <param name="iv"></param>
        /// <returns></returns>
        private byte[] AES_Encrypt(string original, byte[] key, byte[] iv) {
            try {
                var data = Encoding.UTF8.GetBytes(original);

                var cipher = Aes.Create().CreateEncryptor(key, iv);

                var de = cipher.TransformFinalBlock(data, 0, data.Length);
                return de;
            } catch {
                return null;
            }
        }
        /// <summary>
        /// 轉換Bytes
        /// </summary>
        /// <param name="a"></param>
        /// <param name="arryB"></param>
        /// <returns></returns>
        private byte[] BytesAdd(byte[] a, params byte[][] arryB) {
            List < byte > c = new List < byte > ();
            c.AddRange(a);
            arryB.ToList().ForEach(b => {
                c.AddRange(b);
            });
            return c.ToArray();
        }
        /// <summary>
        /// 產生AES的IV
        /// </summary>
        /// <returns></returns>
        private static byte[] GetBytesIV() {
            var aes = System.Security.Cryptography.AesCryptoServiceProvider.Create();
            aes.KeySize = 256;
            aes.GenerateIV();
            return aes.IV;
        }
        /// <summary>
        /// 資料 POST 到主機
        /// </summary>
        /// <param name="pars"></param>
        /// <returns></returns>
        private string Post(NameValueCollection pars) {
            string result = string.Empty;
            string param = string.Empty;
            if (pars.Count > 0) {
                pars.AllKeys.ToList().ForEach(key => {
                    param += key + "=" + pars[key] + "&";
                });
                if (param[param.Length - 1] == '&') {
                    param = param.Remove(param.Length - 1);
                }
            }
            byte[] bs = Encoding.UTF8.GetBytes(param);

            try {
                HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create(this.url);
                req.Method = "POST";
                req.ContentType = "application/x-www-form-urlencoded";
                req.ContentLength = bs.Length;
                using(Stream reqStream = req.GetRequestStream()) {
                    reqStream.Write(bs, 0, bs.Length);
                }
                using(WebResponse wr = req.GetResponse()) {
                    Encoding myEncoding = Encoding.GetEncoding("UTF-8");
                    using(StreamReader myStreamReader = new StreamReader(wr.GetResponseStream(), myEncoding)) {
                        result = myStreamReader.ReadToEnd();
                    }
                }

                req = null;
            } catch (WebException ex) {
                throw new WebException(ex.Message + "params : " + param, ex, ex.Status, ex.Response);
            }
            return result;
        }


    }
    /// <summary>
    /// 串接服務請求欄位
    /// </summary>
    public class ServiceRequest {
        public string service_name { get; set; }
        public string cmd { get; set; }
    }
}