Come posso crittografare e decifrare usando AES 128 senza IV?

Question

Attualmente sto cercando un modo per crittografare una stringa e decodificare un array di byte utilizzando la crittografia simmetrica AES-128, in C#. Non riesco a trovare un modo per farlo, ma forse mi sono perso qualcosa.

Answer 1

Import namespace

using System; 
using System.IO; 
using System.Text; 
using System.Security.Cryptography; 

    static void Main(string[] args) 
     { 
      string value = "@arifansari300<3>"; 

      string encryptedValue= EncryptDecrypt.Encrypt(value); 

      string decryptedValue = EncryptDecrypt.Decrypt(encryptedValue); 
     } 

    public static string Encrypt(string clearText) 
    { 
     string EncryptionKey = "MAKV2SPBNI99212"; 
     byte[] clearBytes = Encoding.Unicode.GetBytes(clearText); 
     using (Aes encryptor = Aes.Create()) 
     { 
      Rfc2898DeriveBytes pdb = new 
       Rfc2898DeriveBytes(EncryptionKey, new byte[] 
       { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 }); 
      encryptor.Key = pdb.GetBytes(32); 
      encryptor.IV = pdb.GetBytes(16); 
      using (MemoryStream ms = new MemoryStream()) 
      { 
       using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write)) 
       { 
        cs.Write(clearBytes, 0, clearBytes.Length); 
        cs.Close(); 
       } 
       clearText = Convert.ToBase64String(ms.ToArray()); 
      } 
     } 
     return clearText; 
    } 

    public static string Decrypt(string cipherText) 
    { 
     string EncryptionKey = "MAKV2SPBNI99212"; 
     byte[] cipherBytes = Convert.FromBase64String(cipherText); 
     using (Aes encryptor = Aes.Create()) 
     { 
      Rfc2898DeriveBytes pdb = new 
       Rfc2898DeriveBytes(EncryptionKey, new byte[] 
       { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 }); 
      encryptor.Key = pdb.GetBytes(32); 
      encryptor.IV = pdb.GetBytes(16); 
      using (MemoryStream ms = new MemoryStream()) 
      { 
       using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write)) 
       { 
        cs.Write(cipherBytes, 0, cipherBytes.Length); 
        cs.Close(); 
       } 
       cipherText = Encoding.Unicode.GetString(ms.ToArray()); 
      } 
     } 
     return cipherText; 
    }