在asp.net中加密和解密查詢字符串

有人可以告訴我加密和解密查詢字符串的最佳方式是什麼？什麼算法最好？對稱算法，不對稱算法，數字簽名，或者其他的算法，我不知道請幫在asp.net中加密和解密查詢字符串

2014-05-09 MiladCr7

來源是什麼？目的是什麼？它是爲了內部製作的網址，還是爲了驗證來自第三方的推介？ – sisve

此外，什麼是「最好」的資格？它是最快的嗎？它是最複雜的（最難破解的）它是否會產生最美麗的琴絃？除此之外，我認爲這個問題比http://programmers.stackexchange.com/更適合。 – DrCopyPaste

用於傳輸重要信息 – MiladCr7

對稱加密，請查看MSDN文檔和示例：

System.Security.Cryptography.Aes 
System.Security.Cryptography.DES 
System.Security.Cryptography.RC2 
System.Security.Cryptography.Rijndael 
System.Security.Cryptography.TripleDES

對於非對稱加密，查看MSDN文檔和示例：

System.Security.Cryptography.DSA 
System.Security.Cryptography.ECDiffieHellman 
System.Security.Cryptography.ECDsa 
System.Security.Cryptography.RSA

示例：

你可以改變這些

static readonly string PasswordHash = "[email protected]@Sw0rd"; 
static readonly string SaltKey = "[email protected]&KEY"; 
static readonly string VIKey = "@1B2c3D4e5F6g7H8";

加密：

public static string Encrypt(string plainText) 
     { 
      byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText); 

      byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256/8); 
      var symmetricKey = new RijndaelManaged() { Mode = CipherMode.CBC, Padding = PaddingMode.Zeros }; 
      var encryptor = symmetricKey.CreateEncryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey)); 

      byte[] cipherTextBytes; 

      using (var memoryStream = new MemoryStream()) 
      { 
       using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write)) 
       { 
        cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length); 
        cryptoStream.FlushFinalBlock(); 
        cipherTextBytes = memoryStream.ToArray(); 
        cryptoStream.Close(); 
       } 
       memoryStream.Close(); 
      } 
      return Convert.ToBase64String(cipherTextBytes); 
     }

解密：

public static string Decrypt(string encryptedText) 
     { 
      byte[] cipherTextBytes = Convert.FromBase64String(encryptedText); 
      byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256/8); 
      var symmetricKey = new RijndaelManaged() { Mode = CipherMode.CBC, Padding = PaddingMode.None }; 

      var decryptor = symmetricKey.CreateDecryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey)); 
      var memoryStream = new MemoryStream(cipherTextBytes); 
      var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read); 
      byte[] plainTextBytes = new byte[cipherTextBytes.Length]; 

      int decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length); 
      memoryStream.Close(); 
      cryptoStream.Close(); 
      return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount).TrimEnd("\0".ToCharArray()); 
     }

以上功能的使用：

string strvalue=Encrypt(someid); 
Response.Redirect("yourpage.aspx?id=strvalue");

有關重定向頁面：

if(Request.QueryString["id"]!=null) 
{ 
    string decryptval=Decrypt(Request.QueryString["id"].ToString()); 
}

View other Encryption Methods

希望這有助於！

來源

2014-05-09 08:26:56

在asp.net中加密和解密查詢字符串

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