I. Interface Request：

Interface parameters

Sequence Number	Domain Name	Variable Name	Required	Type	Remarks
1	Version Number	version	M	String(6)	1.0.0
2	Merchant Number	userNo	M	Number	Unique number provided to merchants
3	Type	dataType	M	String(8)	Business Type
4	Datagram	dataContent	M	String(2048)	Data Content

Convert dataContent to a JSON string
Base64 encode a JSON string
Use RSA 1024 to asymmetrically encrypt the Base64-encoded string into a byte array
Convert a byte array to a hexadecimal string

II. Interface Return：

Sequence Number	Domain Name	Variable Name	Required	Type	Remarks
1	Success Identifier	success	M	boolean	Return true (success) or false
2	Error Code	errorCode	O	String(6)	success is false, errorCode has a value. For details, see the error code description.
3	Error Description	errorMsg	O	String(256)	Error description, not empty when success is false
4	Return result information	result	O	String(1024)	SUCCESS is empty when it is false, and not empty otherwise
5	Merchant Number	userNo	M	String(11)	Unique number provided to merchants
6	Is it asynchronous	async	M	Boolean	True indicates that the callback notification result will be called in business processing, false indicates synchronous processing, and result

1、The returned data format is the same as that of the merchant's JSON. After decrypting with the public key, and then decoding Base64, you can obtain it.

Encryption code：

public void encryptByPfxTest(){
  String path = this.getClass().getClassLoader().getResource("test_pri.pfx").getPath();
  Map<String,String> req = new HashMap<>();
  req.put("dataType","json");
  req.put("version","1.0.0");
  req.put("userNo","***");
  OpenapiDptPaymentBillTransactionReq data = new OpenapiDptPaymentBillTransactionReq();
  data.setAmount(new BigDecimal(5));
  data.setCurrency("USDT");
  data.setChain("TRON");
  data.setSerialNumber("TEST_BILL" + System.currentTimeMillis());
  System.out.println("before encrypt request param: " + JSON.toJSONString(data));
  String encryptData = FormatUtil.byte2Hex(RsaUtil.encryptToBytes(Base64.encode(JSON.toJSONString(data)), RsaUtil.initPrivateKey(path,"123456")));
  System.out.println("encrypt data: " + encryptData);
  req.put("dataContent", encryptData);
  System.out.println("request body: " + JSON.toJSONString(req));
}

Decryption code (decrypt using public key)：

private static final String PLATFORM_PUB_KEY = "***";

public void decryptByStringPublicKeyTest(){
  String str = "{\"result\":\"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\",\"async\":false,\"success\":true,\"userNo\":\"***\"}";
  JSONObject jsonObject = JSON.parseObject(str);
  String result = RsaUtil.decryptToString(jsonObject.getString("result"), RsaUtil.getPublicKey(PLATFORM_PUB_KEY));
  System.out.println("decrypt response: " + result);
}

Decryption code (using certificate decryption)：

public void decryptByCerTest(){
  String path = this.getClass().getClassLoader().getResource("test_pub.cer").getPath();
  String str = "{\"result\":\"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\",\"async\":false,\"success\":true,\"userNo\":\"***\"}";
  JSONObject jsonObject = JSON.parseObject(str);
  String result = RsaUtil.decryptToString(jsonObject.getString("result"), RsaUtil.initPublicKey(path));
  System.out.println("decrypt response: " + result);
}