簽名生成

提示 (TIP)

商戶可按照以下步驟生成請求的簽名，平台在收到請求後會進行簽名驗證。如果簽名驗證失敗，請求將被拒絕，並返回相應的狀態碼 (status code)。

準備工作 (Preparation)

商戶需註冊商戶號，並透過商戶後台創建支付應用，以獲取 APP_ID 和 APP_SECRECT。

適用條件 (Condition)

本文檔中所有 POST 方法的接口都需要驗證簽名，其他接口暫時不需要驗證。

生成步驟 (Generation)

簽名字串共有四行，每行一個參數。行尾以 \n（換行符，ASCII 編碼值為 0x0A）結束，最後一行不添加 \n。如果參數本身以 \n 結尾，您仍需額外附加一個 \n。

URL\n
Request timestamp\n
Request random string\n
Request message body

以訂單查詢 (order inquiry) 為例。

第一步是獲取請求的絕對 URL，並移除域名部分，得到參與簽名的 URL。如果請求中包含查詢參數，需在 URL 後面追加 '? ' 及相應的查詢字串。

/v1/transaction/query

第二步是獲取發起請求時系統的當前時間戳（毫秒）。即從 1970 年 1 月 1 日 00:00:00 GMT 到現在的總秒數，作為請求時間戳。平台會拒絕處理很久以前發出的請求，請確保商戶自身系統時間的準確性。

1554208460

第三步是生成一個 32 位的 隨機字串 (random string)。

593BEC0C930BF1AFEB40B4A08C8FB242

第四步是獲取請求中的消息體 (request body)。

{
    "app_id": "8e4b8c2e7cxxxxxxxx1a1cbd3d59e0bd",
    "mch_id": "12345678",
    "transaction_id": "e98b30294xxxxxxxxxxxx97a9d9e09ce",
    "out_trade_no": "fb72xxxx-xxxx-xxxx-xxxx-xxxx8a7b52cb"
}

第五步是根據上述規則構造請求簽名字串，如下所示：

/v1/transaction/query\n
1554208460\n
593BEC0C930BF1AFEB40B4A08C8FB242\n
{"app_id":"8e4b8c2e7cxxxxxxxx1a1cbd3d59e0bd","mch_id":"12345678","transaction_id":"e98b30294xxxxxxxxxxxx97a9d9e09ce","out_trade_no":"fb72xxxx-xxxx-xxxx-xxxx-xxxx8a7b52cb"}

加密 (Encryption)

以 javascript 加密過程為例：

let cryptoJs = require("crypto-js");
let key = CryptoJS.enc.Utf8.parse("9db664697xxxxxxxxxxxx2d27a3c925c") //the secret key of APP
//AES encryption
let ciphertext = cryptoJs.AES.encrypt(Signature string, key, {
  mode: CryptoJS.mode.ECB,
  padding: CryptoJS.pad.Pkcs7,
}).toString();

加密後的示例：

QCwHvoBM9TJ2wokF8hhaoS34P0nkJpYMisBUizpOj5q/77I6+KFPVvFUCaaUiu+KFctisJFU1DfJdCHrLpJIx9CirX5ku3L9TMGihFcEG8MGoh2dwDvunH8JgJOVV9ClSkpXqjad4flSuYMoxPOZqPHr+ktOLZ3pPzs12BMqmbZVNIe+oOezTZsQ8xxxxRgOJzwU/AbouZSl2xto7DcYCjvNSnw7BkuzBFgTfxVXB3+R7e+1SpdeJajuCKGKvYMVTe7slS5j/4LQ4vcr1QqOPhpoemsOV92tPhgQ0iGw3GKpLIEOoDAwy2+ojzP5XERh

拼接 (Concatenate)

簽名資訊的拼接格式如下：

app_id=APP_ID, mch_id=商戶號, nonce_str=第三步生成的隨機字串, timestamp=第二步生成的時間戳, signature=加密後的簽名字串。

HTTP 標頭 (HTTP header)

文檔 API 透過 HTTP Authorization 標頭傳遞簽名。Authorization 由兩部分組成：認證類型 和 簽名資訊。認證類型 目前僅支援 TTPAY-AES-256-ECB。

Authorization: authentication type  signature information

Authorization 標頭如下：（註：因排版可能包含換行，此為示例，實際數據應在同一行）

Authorization: TTPAY-AES-256-ECB app_id=8e4b8c2e7cxxxxxxxx1a1cbd3d59e0bd,mch_id=12345678,nonce_str=593BEC0C930BF1AFEB40B4A08C8FB242,timestamp=1554208460,signature=QCwHvoBM9TJ2wokF8hhaoS34P0nkJpYMisBUizpOj5q/77I6+KFPVvFUCaaUiu+KFctisJFU1DfJdCHrLpJIx9CirX5ku3L9TMGihFcEG8MGoh2dwDvunH8JgJOVV9ClSkpXqjad4flSuYMoxPOZqPHr+ktOLZ3pPzs12BMqmbZVNIe+oOezTZsQ8xxxxRgOJzwU/AbouZSl2xto7DcYCjvNSnw7BkuzBFgTfxVXB3+R7e+1SpdeJajuCKGKvYMVTe7slS5j/4LQ4vcr1QqOPhpoemsOV92tPhgQ0iGw3GKpLIEOoDAwy2+ojzP5XERh"

最後，我們可以創建一個包含簽名的 HTTP 請求。

$ curl https://api.tokenpay.me/v1/transaction/query -H "Content-Type: application/json" -H 'Authorization: TTPAY-AES-256-ECB
 app_id=8e4b8c2e7cxxxxxxxx1a1cbd3d59e0bd,mch_id=12345678,nonce_str=593BEC0C930BF1AFEB40B4A08C8FB242,timestamp=1554208460,signature=QCwHvoBM9TJ2wokF8hhaoS34P0nkJpYMisBUizpOj5q/77I6+KFPVvFUCaaUiu+KFctisJFU1DfJdCHrLpJIx9CirX5ku3L9TMGihFcEG8MGoh2dwDvunH8JgJOVV9ClSkpXqjad4flSuYMoxPOZqPHr+ktOLZ3pPzs12BMqmbZVNIe+oOezTZsQ8xxxxRgOJzwU/AbouZSl2xto7DcYCjvNSnw7BkuzBFgTfxVXB3+R7e+1SpdeJajuCKGKvYMVTe7slS5j/4LQ4vcr1QqOPhpoemsOV92tPhgQ0iGw3GKpLIEOoDAwy2+ojzP5XERh' -X POST -d '{"out_trade_no": "fb72xxxx-xxxx-xxxx-xxxx-xxxx8a7b52cb", "transaction_id":"e98b30294xxxxxxxxxxxx97a9d9e09ce", "app_id":"8e4b8c2e7cxxxxxxxx1a1cbd3d59e0bd", "mch_id":"12345678" }'

示例代碼 (Demo code)

Java

package com.example.http;

import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;
import com.sun.istack.internal.NotNull;
import okhttp3.*;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.security.Security;
import java.util.Base64;

public class HttpApplication {
    private static String SECRET = "AES";
    private static String CIPHER_ALGORITHM = "AES/ECB/PKCS7Padding";
    private static String schema = "TTPAY-AES-256-ECB ";

    public static void main(String[] args) throws Exception {
        String key = "xxxxxxxx";    // AppSecret
        String reqURL = "/v1/transaction/query";    // Request interface

        OkHttpClient client = new OkHttpClient();
        JSONObject params = new JSONObject();

        try {
            params.put("app_id", "xxxxxxxx");           // Application ID
            params.put("mch_id", "xxxxxxxx");           // Merchat ID
            params.put("transaction_id", "xxxxxxxx");   // Platform order number
            params.put("out_trade_no", "xxxxxxxx");     // Merchat order number
        } catch (JSONException e) {
            e.printStackTrace();
        }

        Security.addProvider(new BouncyCastleProvider());

        // Signature
        String auth = auth(reqURL, params, key);

        RequestBody body = RequestBody.create(MediaType.parse("application/json;charset=utf-8"), params.toString());
        Request request = new Request.Builder()
        .header("Authorization", auth)
        .url(reqURL)
        .post(body)
        .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                System.out.println("http request error");
            }

            @Override
            public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
                System.out.println(response.body().string());
            }
        });
    }

    /**
    * Signature
    * @param reqURL Request URL
    * @param raw Message body
    * @param key AppSecret
    * @return Signature information
    */
    public static String auth(String reqURL, JSONObject raw, String key) throws Exception {
        HttpUrl parseReqURL = HttpUrl.parse(reqURL);
        String url = parseReqURL.encodedPath();
        String appID = raw.getString("app_id");
        String mchID = raw.getString("mch_id");
        long currentTimeMillis = System.currentTimeMillis();
        String timestamp = String.valueOf(currentTimeMillis);
        String nonceStr = randomString(32);
        String message = url + "\n" + timestamp + "\n" + nonceStr + "\n" + raw.toString();
        String aes256ECBPkcs7PaddingEncrypt = aes256ECBPkcs7PaddingEncrypt(message, key);

        return schema + "app_id=" + appID + ",mch_id=" + mchID + ",nonce_str=" + nonceStr + ",timestamp=" + timestamp + ",signature=" + aes256ECBPkcs7PaddingEncrypt;
    }

    /**
    * Generate random string
    * @param len String length
    * @return Random string
    */
    public static String randomString(Integer ...len) {
        int e = len.length <= 0 ? 32 : len[0];
        String str = "ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678";
        int strLen = str.length();
        StringBuilder stringBuilder = new StringBuilder();

        for (int i = 0; i < e; i++) {
            double random = Math.random();
            int v = (int) Math.floor(random * strLen);
            char charAt = str.charAt(v);

            stringBuilder.append(charAt);
        }

        return stringBuilder.toString();
    }

    /**
    * AES encryption
    * @param str String
    * @param key Secret key
    * @return Cryptographic string
    * @throws Exception Abnormal information
    */
    public static String aes256ECBPkcs7PaddingEncrypt(String str, String key) throws Exception {
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        byte[] keyBytes = key.getBytes(StandardCharsets.UTF_8);

        cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keyBytes, SECRET));

        byte[] doFinal = cipher.doFinal(str.getBytes(StandardCharsets.UTF_8));

        return new String(Base64.getEncoder().encode(doFinal));
    }

    /**
    * AES encryption
    * @param str String
    * @param key Secret key
    * @return Decryption string
    * @throws Exception Abnormal information
    */
    public static String aes256ECBPkcs7PaddingDecrypt(String str, String key) throws Exception {
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        byte[] keyBytes = key.getBytes(StandardCharsets.UTF_8);

        cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(keyBytes, SECRET));

        byte[] doFinal = cipher.doFinal(Base64.getDecoder().decode(str));

        return new String(doFinal);
    }
}

Go

package main

import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"io"
	"math/rand"
	"net/http"
	"time"

	"github.com/forgoer/openssl"
)

const (
	SignatureMessageFormat = "%s\n%d\n%s\n%s" // The original format of the digital signature
	HeaderAuthorizationFormat = "%s app_id=%s,mch_id=%s,nonce_str=%s,timestamp=%d,signature=%s"
)

type QueryReq struct {
	AppID         string `json:"app_id"`
	MchID         string `json:"mch_id"`
	TransactionID string `json:"transaction_id,omitempty"`
	OutTradeNo    string `json:"out_trade_no,omitempty"`
}

func main() {

	appSecret := "**********"           // AppSecret
	reqPath := "/v1/transaction/query"  // Request interface path
	queryReq := QueryReq{
		AppID:         "**********",    // Application ID
		MchID:         "**********",    // Merchat ID
		TransactionID: "**********",    // Platform order number
		OutTradeNo:    "**********",    // Merchat order number
	}

	b, _ := json.Marshal(queryReq)

    // Signature
	authorization, err := GenerateAuthorizationHeader(queryReq.AppID, queryReq.MchID, reqPath, string(b), appSecret)
	if err != nil {
		panic(err)
	}

    // Request interface
	url := "" + reqPath

	payload := bytes.NewBuffer(b)

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Set("Accept", "application/json")
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", authorization)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))
}

// Signature
func GenerateAuthorizationHeader(appID, mchID, reqURL, signBody, appSecret string) (string, error) {
	nonceStr := RandomString(32)
	timestamp := time.Now().Unix()
	message := fmt.Sprintf(SignatureMessageFormat, reqURL, timestamp, nonceStr, signBody)

	signatureResult, err := AesECBEncrypt(message, appSecret)
	if err != nil {
		return "", err
	}
	authorization := fmt.Sprintf(
		HeaderAuthorizationFormat, getAuthorizationType(), appID,
		mchID, nonceStr, timestamp, signatureResult,
	)
	return authorization, nil
}

// AES encryption
func AesECBEncrypt(orig, key string) (string, error) {
	dst, _ := openssl.AesECBEncrypt([]byte(orig), []byte(key), openssl.PKCS7_PADDING)
	return base64.StdEncoding.EncodeToString(dst), nil
}

// AES encryption
func AesECBDecrypt(crypted, key string) (string, error) {
	x := len(crypted) * 3 % 4
	switch {
	case x == 2:
		crypted += "=="
	case x == 1:
		crypted += "="
	}
	crytedByte, err := base64.StdEncoding.DecodeString(crypted)
	if err != nil {
		return "", err
	}
	origData, err := openssl.AesECBDecrypt(crytedByte, []byte(key), openssl.PKCS7_PADDING)
	if err != nil {
		return "", err
	}
	return string(origData), err
}

// Generate random character
func RandomString(length int) string {
	str := []byte("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
	var result []byte
	rnd := rand.New(rand.NewSource(time.Now().UnixNano()))
	for i := 0; i < length; i++ {
		result = append(result, str[rnd.Intn(len(str))])
	}
	return string(result)
}

func getAuthorizationType() string {
	return "TTPAY-AES-256-ECB"
}

PHP

<?php
$key = "xxxxxxxx";                //  AppSecret
$APP_ID = "xxxxxxxx";              // Application ID
$mchID = "xxxxxxxx";              // Merchat ID
$transactionID = "xxxxxxxx";      // Platform order number
$outTradeNo = "xxxxxxxx";         // Merchat order number
$url = "/v1/transaction/query";   // Interface path
$timestamp = time();              // Current timestamp
$nonce = generateStr(32);         // 32-bit random string

// Generate random string
function generateStr($length) {
  $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
  $res ='';

  for ( $i = 0; $i < $length; $i++ ) {
    $res .= $chars[ mt_rand(0, strlen($chars) - 1) ];
  }

  return $res;
}

// Message body
$body = '{"app_id":"'.$APP_ID.'","mch_id":"'.$mchID.'","transaction_id":"'.$transactionID.'","out_trade_no":"'.$outTradeNo.'"}';

// Construct signature string
$message = $url."\n".$timestamp."\n".$nonce."\n".$body;

// Encrypt signature string
$cipher = "aes-256-ecb";
$sign = openssl_encrypt($message, $cipher, $key);

// Split signature information
$schema = 'TTPAY-AES-256-ECB';
$authorization = sprintf('%s app_id=%s,mch_id=%s,nonce_str=%s,timestamp=%d,signature=%s', $schema, $APP_ID, $mchID, $nonce, $timestamp, $sign);

// Set HTTP header
$header[] = "Accept: application/json";
$header[] = "Content-Type: application/json";
$header[] = "Authorization: $authorization";

// Request interface
$curl = curl_init();
curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
curl_setopt($curl, CURLOPT_URL, "".$url);
curl_setopt($curl, CURLOPT_POSTFIELDS, $body);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
curl_close($curl);

var_export($result);

JavaScript

let cryptoJs = require("crypto-js");

let jsonObj = JSON.parse(pm.request.body.raw); //Convert the submitted body string into an object
let jsonStr = JSON.stringify(jsonObj)//Turn the object back into a string to compress, avoiding line breaks in the body that affect signature compression.
let appID = jsonObj.app_id;
let mchID = jsonObj.mch_id;

// Generate the current timestamp
let timestamp = Math.round(new Date() / 1000).toString()

//Define random string
var nonceStr = randomString(); // Random string
function randomString(e) {
    e = e || 32;
    var t = "ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678",
    a = t.length,
    n = "";
    for (i = 0; i < e; i++) n += t.charAt(Math.floor(Math.random() * a));
    return n
}

//Get the full path
var reqURL = "/" + pm.request.url.path.join("/");

//Splice signature plaintext
message = reqURL + "\n" + timestamp + "\n" + nonceStr + "\n" + jsonStr

let key = CryptoJS.enc.Utf8.parse("********************************") // AppSecret
//AES encryption
let ciphertext = cryptoJs.AES.encrypt(message, key, {
    mode: CryptoJS.mode.ECB,
    padding: CryptoJS.pad.Pkcs7,
  }).toString();

//Splice on the authorization of Header, TTPAY-{EncryMode)},currently supports only AES-256-ECB
let authorization = 'TTPAY-AES-256-ECB app_id=' + appID + ',mch_id=' + mchID + ',nonce_str=' + nonceStr + ',timestamp=' + timestamp + ',signature=' + ciphertext

pm.request.headers.upsert({ key: "authorization", value: authorization })