如何使用AES 128加密和解密？ [英] How can I encrypt and decrypt using AES 128 without an IV?

问题描述

我正在C＃中使用AES-128对称加密方法来加密一个字符串并解密一个字节数组。我找不到办法，但也许我错过了一些东西。

解决方案

导入命名空间

  using System; 
使用System.IO; 
使用System.Text; 
使用System.Security.Cryptography; 
 
 static void Main（string [] args）
 {
 string value =@ arifansari300< 3>; 
 
 string encryptedValue = EncryptDecrypt.Encrypt（value）; 
 
 string decryptptedValue = EncryptDecrypt.Decrypt（encryptedValue）; 
} 
 
 public static string Encrypt（string clearText）
 {
 string EncryptionKey =MAKV2SPBNI99212; 
 byte [] clearBytes = Encoding.Unicode.GetBytes（clearText）; 
使用（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）; 
使用（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）; 
使用（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; 
} 
  

I'm currently needing a way to encrypt a string and decrypt a byte array using AES-128 symmetrical encryption, in C#. I can't find a way how to do this, but maybe I've missed something.

解决方案

Import namespaces

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;
    }

这篇关于如何使用AES 128加密和解密？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！