Я пытаюсь передать сообщение XML из моего консольного приложения C # в сторонний API с использованием шифрования AES (Advance Encryption Security) и получить ответ с аутентификацией с помощью ключа и IV, а затем выполнить дешифрование и декодировать эту строку изатем необходимо создать синтаксический анализатор, который шифрует каждый раздел сообщения, так что мое консольное приложение и обратный конец с этим сторонним API.
Я написал свой код ниже, но я не знаю, какой потокя могу написать код, а также меня смущает то, как я могу открыть сокет SSL TCP и отправить сообщение с запросом в API!
Я написал здесь некоторый код, но мог бы использовать некоторую помощь.
Спасибо!
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
namespace ConsoleApp
{
public class Program
{
public static void Main()
{
try
{
const string xmlString =
@"< Message >
< Request >
< Detail >
< TranType > Credit </ TranType >
< TranAction > Sale </ TranAction >
< Amount > 15.67 </ Amount >
< CurrencyCode > 840 </ CurrencyCode >
</ Detail >
< IndustryData >
< Industry > CardNotPresent </ Industry >
< Eci > 7 </ Eci >
< MarketSpecificId > B </ MarketSpecificId >
</ IndustryData >
< Account >
< Pan > 4111111111111111 </ Pan >
< Expiration > 1117 </ Expiration >
< Postal > 197222234 </ Postal >
< Address > 123 Fake Street</Address>
</Account>
<Authentication>
<Client>ABC</Client>
<Source>xyz</Source>
</Authentication>
</Request>
</Message>";
// Create a new instance of the Aes class. This generates a new key and initialization vector (IV).
using (Aes myAes = Aes.Create())
{
// Encrypt the string to an array of bytes.
var algoKey = ConvertHexStringToByteArray("8FDFC56F3F87C9BD53A58C34BEBE27CABC4944BF26A711E5539F03742033F270");
var algoIv = ConvertHexStringToByteArray("B751B5FCAC067336D2E7CEEBF9CF590D");
byte[] myAes.Key = algoKey;
byte[] myAes.IV = algoIv;
byte[] encrypted = EncryptStringToBytes_Aes(xmlString, myAes.Key, myAes.IV);
string base64 = Convert.ToBase64String(encrypted);
XDocument message = new XDocument(
new XElement("Message",
new XElement("Request", base64),
new XElement("Authentication",
new XElement("Client", "ABC"),
new XElement("Source", "XYZ")))
);
//transmit to api
var t = new Task(HTTPS_POST);
t.Start();
t.Start();
Console.Write(message);
Console.ReadKey();
// Decrypt the bytes to a string.
string roundtrip = DecryptStringFromBytes_Aes(encrypted, myAes.Key, myAes.IV);
//Display the original data and the decrypted data.
Console.WriteLine("Round Trip: {0}", roundtrip);
console.ReadLine();
}
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e.Message);
}
}
private static async void HTTPS_POST()
{
const string apiUrl = "https://10.7.6.70";
var handler = new HttpClientHandler
{
Proxy = new WebProxy("http://127.0.0.1:8888"),
UseProxy = false
};
// force tls 1.2
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
ServicePointManager.ServerCertificateValidationCallback = ((send, certificate, chain, sslPolicyErrors) => true);
Console.WriteLine("Posting a credit transaction to: " + apiUrl);
var client = new HttpClient(handler);
var response = await client.PostAsync(apiUrl, new StringContent(message));
var content = response.Content;
Console.WriteLine("Response Status Code: " + (int)response.StatusCode);
var result = await content.ReadAsStringAsync();
if (result.Length > 50)
{
Console.WriteLine("Response: " + result);
// TODO Decryption logic
}
}
private static byte[] EncryptStringToBytes_Aes(string plainText, byte[] Key, byte[] IV)
{
// Check arguments.
if (plainText == null || plainText.Length <= 0)
throw new ArgumentNullException("plainText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("IV");
byte[] encrypted;
// Create an Aes object with the specified key and IV.
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Key;
aesAlg.IV = IV;
// Create a decrytor to perform the stream transform.
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
// Create the streams used for encryption.
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
encrypted = msEncrypt.ToArray();
}
}
}
// Return the encrypted bytes from the memory stream.
return encrypted;
}
private static byte[] ConvertHexStringToByteArray(string sHex)
{
byte[] yKey;
try
{
// set byte length
yKey = new byte[sHex.Length / 2];
for (int i = 0, j = 0; j < yKey.Length; i += 2, j++)
{
yKey[j] = Convert.ToByte(sHex.Substring(i, 2), 16);
}
}
catch (Exception e)
{
throw new Exception(e.Message, e);
}
return yKey;
}
}
private static string DecryptStringFromBytes_Aes(byte[] cipherText, byte[] Key, byte[] IV)
{
// Check arguments.
if (cipherText == null || cipherText.Length <= 0)
throw new ArgumentNullException("cipherText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("IV");
// Declare the string used to hold
// the decrypted text.
string roundtrip = null;
// Create an Aes object
// with the specified key and IV.
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Key;
aesAlg.IV = IV;
// Create a decrytor to perform the stream transform.
ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
// Create the streams used for decryption.
using (MemoryStream msDecrypt = new MemoryStream(cipherText))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
// Read the decrypted bytes from the decrypting stream
// and place them in a string.
roundtrip = srDecrypt.ReadToEnd();
}
}
}
}
return roundtrip;
}
}