C#下Base64、MD5、AES加密

柔情只为你懂 2022-08-10 03:41 169阅读 0赞

using System;
    using System.Collections.Generic;
    using System.Security.Cryptography;
    using System.Linq;
    using System.Text;
    
    namespace ConsoleApplication1
    {
        class Program
        {
            static void Main(string[] args)
            {
    			
                string s="abcdef1234567890";
    
                try
                {
                    Console.WriteLine("Base64加密");
    				string key = System.Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(s));
                    Console.WriteLine(key);
                    Console.WriteLine();
                    Console.WriteLine("Base64解码");
    				string enkey = System.Text.Encoding.Default.GetString(System.Convert.FromBase64String(key));
                    Console.WriteLine(enkey);
                    Console.WriteLine();
                }catch(Exception e){
                }
    
                MD5 md5Hash = MD5.Create();
                
                string hash = GetMd5Hash(md5Hash, s);
                Console.WriteLine("The MD5 hash of " + s + " is:\n" + hash + ".");
                Console.WriteLine();
    
                Console.WriteLine("AES加密");
                Console.WriteLine(Encrypt(s));
                Console.WriteLine();
    
                Console.WriteLine("AES解密");
                Console.WriteLine(Decrypt(Encrypt(s)));
    
                Console.ReadKey();
            }
    		//MD5加密
            static string GetMd5Hash(MD5 md5Hash, string input)
            {
    
                byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));
    
                StringBuilder sBuilder = new StringBuilder();
    
                for (int i = 0; i < data.Length; i++)
                {
                    sBuilder.Append(data[i].ToString("x2"));
                }
    
                return sBuilder.ToString();
            }
            // AES-256 加密
            public static string Encrypt(string toEncrypt)
            {
                // 256-AES key    
                byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012");
                byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
    
                RijndaelManaged rDel = new RijndaelManaged();
                rDel.Key = keyArray;
                rDel.Mode = CipherMode.ECB;
                rDel.Padding = PaddingMode.PKCS7;
    
                ICryptoTransform cTransform = rDel.CreateEncryptor();
                byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
    
                return Convert.ToBase64String(resultArray, 0, resultArray.Length);
            }
            //AES-256 解密
            public static string Decrypt(string toDecrypt)
            {
                // 256-AES key    
                byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012");
                byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);
    
                RijndaelManaged rDel = new RijndaelManaged();
                rDel.Key = keyArray;
                rDel.Mode = CipherMode.ECB;
                rDel.Padding = PaddingMode.PKCS7;
    
                ICryptoTransform cTransform = rDel.CreateDecryptor();
                byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
    
                return UTF8Encoding.UTF8.GetString(resultArray);
            }
        }
    }