C＃汽WebRequests

Question

我是初學者，我遇到嘗試登錄的水蒸汽時的一個問題：

public Steam(string password, string login) 
{ 
    Password = password; 
    Login = login; 
    _client.DefaultRequestHeaders.Add("User-Agent", 
     "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36"); 
    _rsa = new RSACryptoServiceProvider(); 
    _rsaParameters = new RSAParameters(); 
    _params = new Dictionary<string, string>(); 
} 
public async Task GetRsa() 
{ 
    var request = await _client.GetAsync($"https://steamcommunity.com/login/getrsakey?username=" + Login); 
    var content = await request.Content.ReadAsStringAsync();     
    Timestamp = content.Between("timestamp\":\"", "\"", StringComparison.InvariantCulture); 
    TokenGid = content.Between("token_gid\":\"", "\"", StringComparison.InvariantCulture); 
    Mod = content.Between("publickey_mod\":\"", "\"", StringComparison.InvariantCulture); 
    Exp = content.Between("publickey_exp\":\"", "\"", StringComparison.InvariantCulture); 
    _rsaParameters.Modulus = HexToByte(Mod); 
    _rsaParameters.Exponent = HexToByte(Exp); 
    _rsa.ImportParameters(_rsaParameters); 
    var bytePassword = Encoding.ASCII.GetBytes(Password); 
    var encodedPassword = _rsa.Encrypt(bytePassword, false); 
    EncryptedBase64Password = Convert.ToBase64String(encodedPassword); 
} 
public async Task TryLogin() 
{ 
    var unixTimestamp = (int)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds; 
    //_params["donotcache"] = unixTimestamp + "000"; 
    _params["username"] = Login; 
    _params["password"] = EncryptedBase64Password; 
    _params["twofactorcode"] = ""; 
    _params["emailauth"] = ""; 
    _params["loginfriendlyname"] = ""; 
    _params["captchagid"] = "-1"; 
    _params["captcha_text"] = ""; 
    _params["emailsteamid"] = ""; 
    _params["rsatimestamp"] = Timestamp; 
    _params["remember_login"] = "false"; 

    var responce2 = await _client.PostAsync($"https://steamcommunity.com/login/dologin/", new FormUrlEncodedContent(_params)); 
    var content2 = await responce2.Content.ReadAsStringAsync(); 
} 

我得到這樣的回答：

"success":false,"requires_twofactor":false,"message":"The account name or password that you have entered is incorrect.","clear_password_field":true,"captcha_needed":false,"captcha_gid":-1 

而且我不明白的地方是我的錯。也許我的RSA crypt是錯誤的，或者cookies有問題。

Answer 1

您的代碼看起來不錯。有些事情要檢查： 1.確保您的用戶名&密碼正確; 2.當你調用getRsaKey時，檢查你是否解析publickey_mod & publickey_exp correct;

Answer 2

檢查出我的類

using System; 
using System.Collections.Generic; 
using System.Globalization; 
using System.Linq; 
using System.Net; 
using System.Net.Http; 
using System.Numerics; 
using System.Threading.Tasks; 
using Newtonsoft.Json; 

class Web 
{ 
    public const string STEAM_COMMUNITY = "http://steamcommunity.com"; 
    public const string STEAM_COMMUNITY_GETRSA = "https://steamcommunity.com/login/getrsakey"; 
    public const string STEAM_COMMUNITY_LOGIN = "https://steamcommunity.com/login/dologin/"; 


    HttpClient m_HttpClient; 
    CookieContainer m_CookieContainer; 

    public Web() 
    { 
     m_CookieContainer = new CookieContainer(); 
     HttpClientHandler msgHandler = new HttpClientHandler { CookieContainer = m_CookieContainer }; 
     m_HttpClient = new HttpClient(msgHandler); 
    } 

    public async Task Login(string pUsername, string pPassword) 
    { 
     Console.WriteLine("Steamcommunity Login"); 

     //Get RSA 
     Dictionary<string, string> data = new Dictionary<string, string>(); 

     var request = await m_HttpClient.GetAsync(STEAM_COMMUNITY_GETRSA + "?username=" + pUsername); 
     var result = await request.Content.ReadAsStringAsync(); 
     RsaKey rsaKey = JsonConvert.DeserializeObject<RsaKey>(result); 

     if(!rsaKey.success) 
     { 
      Console.WriteLine("Unsuccessfull RSA Key request."); 
      return; 
     } 

     RsaParameters rsaParam = new RsaParameters 
     { 
      Exponent = rsaKey.publickey_exp, 
      Modulus = rsaKey.publickey_mod, 
      Password = pPassword 
     }; 

     var encrypted = string.Empty; 
     while (encrypted.Length < 2 || encrypted.Substring(encrypted.Length - 2) != "==") 
     { 
      encrypted = EncryptPassword(rsaParam); 
     } 

     data.Add("username", pUsername); 
     data.Add("password", encrypted); 
     data.Add("twofactorcode", ""); 
     data.Add("emailauth", ""); 
     data.Add("loginfriendlyname", ""); 
     data.Add("captchagid", "-1"); 
     data.Add("captcha_text", ""); 
     data.Add("emailsteamid", ""); 
     data.Add("rsatimestamp", rsaKey.timestamp); 
     data.Add("remember_login", "false"); 

     request = await m_HttpClient.PostAsync(STEAM_COMMUNITY_LOGIN, new FormUrlEncodedContent(data)); 
     result = await request.Content.ReadAsStringAsync(); 

     LoginResult loginResult = JsonConvert.DeserializeObject<LoginResult>(result); 

     if(loginResult.success) 
     { 
      IEnumerable<Cookie> responseCookies = m_CookieContainer.GetCookies(new Uri(STEAM_COMMUNITY)).Cast<Cookie>(); 

      foreach(var cookie in responseCookies) 
      { 
       Console.WriteLine("Name {0}, {1}", cookie.Name, cookie.Value); 
      } 

      Console.WriteLine("Successfully logged in."); 

      //SendCookies 
     } 
     else 
     { 
      Console.WriteLine("Couldn't login..."); 
      Console.WriteLine(result); 
     } 

    } 

    private string EncryptPassword(RsaParameters rsaParam) 
    { 
     // Convert the public keys to BigIntegers 
     var modulus = CreateBigInteger(rsaParam.Modulus); 
     var exponent = CreateBigInteger(rsaParam.Exponent); 

     // (modulus.ToByteArray().Length - 1) * 8 
     //modulus has 256 bytes multiplied by 8 bits equals 2048 
     var encryptedNumber = Pkcs1Pad2(rsaParam.Password, (2048 + 7) >> 3); 

     // And now, the RSA encryption 
     encryptedNumber = BigInteger.ModPow(encryptedNumber, exponent, modulus); 

     //Reverse number and convert to base64 
     var encryptedString = Convert.ToBase64String(encryptedNumber.ToByteArray().Reverse().ToArray()); 

     return encryptedString; 
    } 

    public static BigInteger Pkcs1Pad2(string data, int keySize) 
    { 
     if (keySize < data.Length + 11) 
      return new BigInteger(); 

     var buffer = new byte[256]; 
     var i = data.Length - 1; 

     while (i >= 0 && keySize > 0) 
     { 
      buffer[--keySize] = (byte)data[i--]; 
     } 

     // Padding, I think 
     var random = new Random(); 
     buffer[--keySize] = 0; 
     while (keySize > 2) 
     { 
      buffer[--keySize] = (byte)random.Next(1, 256); 
      //buffer[--keySize] = 5; 
     } 

     buffer[--keySize] = 2; 
     buffer[--keySize] = 0; 

     Array.Reverse(buffer); 

     return new BigInteger(buffer); 
    } 

    public static BigInteger CreateBigInteger(string hex) 
    { 
     return BigInteger.Parse("00" + hex, NumberStyles.AllowHexSpecifier); 
    } 
} 

public class LoginResult 
{ 
    public bool success; 
    public bool emailauth_needed; 
    public bool captcha_needed; 

    public string message; 
    public string captcha_gid; 
    public string emailsteamid; 
} 

public class RsaParameters 
{ 
    public string Exponent; 
    public string Modulus; 
    public string Password; 
} 

public class RsaKey 
{ 
    public bool success; 

    public string publickey_mod; 
    public string publickey_exp; 
    public string timestamp; 
} 

希望它有助於