如何解密密码

Question

这是我的.NET核心API控制器。

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Linq;
using Vantage.Core.Direct.BL;
using Vantage.Core.Direct.DAL.Models;
using VANTAGE_Dashboard.API.Helper;

namespace Vantage.Core.Direct.API.Controllers
{
    [Route("[controller]")]
     
    [ApiController]
    public class LoginController : ControllerBase
    {
        private readonly VantageContext _context;
        public LoginController(VantageContext context)
        {
            _context = context;
        }
        [HttpPost("login")]
         
        public IActionResult Login([FromBody] AvLogin avLogin)
        {
            if (avLogin == null)
            {
                return BadRequest();
            }

            else {
                // var user = _context.AvLogins.Where(a => a.Id == avLogin.Id).FirstOrDefault();
                var user = _context.AvLogins.Where(a =>
                 a.Id == avLogin.Id && a.PasswordHash == avLogin.PasswordHash).FirstOrDefault();
                if (user != null)
                {
                    return Ok(new
                    {
                        StatusCode = 200,
                        Message = "Logged in Successfully"

                    });
                }
                else 
                
                {
                    return NotFound(new
                    {
                        StatusCode = 404,
                        Message= "User Not Found"
                    }) ;
                }
            }
        }
    }
}

这是我的解密类，

using System.Security.Cryptography;
using System.Text;
using System;
using System.Configuration;

namespace Vantage.DataAccessLayer
{
    public class MD5Encryption
    {
        private static readonly string SecurityKey = "http://www.2am5ana.c0m";
        // Hash an input string and return the hash as
        // a 32 character hexadecimal string.
        public static string GetMd5Hash(string input)
        {
            // Create a new instance of the MD5CryptoServiceProvider object.
            MD5 md5Hasher = MD5.Create();

            // Convert the input string to a byte array and compute the hash.
            byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));

            // Create a new Stringbuilder to collect the bytes
            // and create a string.
            StringBuilder sBuilder = new StringBuilder();

            // Loop through each byte of the hashed data 
            // and format each one as a hexadecimal string.
            for (int i = 0; i < data.Length; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }

            // Return the hexadecimal string.
            return sBuilder.ToString();
        }

        public static string Encrypt(string toEncrypt, bool useHashing)
        {
            byte[] keyArray;
            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);

            //System.Windows.Forms.MessageBox.Show(key);
            //If hashing use get hashcode regards to your key
            if (useHashing)
            {
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(SecurityKey));
                //Always release the resources and flush data
                // of the Cryptographic service provide. Best Practice

                hashmd5.Clear();
            }
            else
                keyArray = UTF8Encoding.UTF8.GetBytes(SecurityKey);

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
            //set the secret key for the tripleDES algorithm
            tdes.Key = keyArray;
            //mode of operation. there are other 4 modes.
            //We choose ECB(Electronic code Book)
            tdes.Mode = CipherMode.ECB;
            //padding mode(if any extra byte added)

            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateEncryptor();
            //transform the specified region of bytes array to resultArray
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0,
              toEncryptArray.Length);
            //Release resources held by TripleDes Encryptor
            tdes.Clear();
            //Return the encrypted data into unreadable string format
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        public static string Decrypt(string cipherString, bool useHashing)
        {
            byte[] keyArray;
            //get the byte code of the string

            byte[] toEncryptArray = Convert.FromBase64String(cipherString);            

            if (useHashing)
            {
                //if hashing was used get the hash code with regards to your key
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(SecurityKey));
                //release any resource held by the MD5CryptoServiceProvider

                hashmd5.Clear();
            }
            else
            {
                //if hashing was not implemented get the byte code of the key
                keyArray = UTF8Encoding.UTF8.GetBytes(SecurityKey);
            }

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
            //set the secret key for the tripleDES algorithm
            tdes.Key = keyArray;
            //mode of operation. there are other 4 modes. 
            //We choose ECB(Electronic code Book)

            tdes.Mode = CipherMode.ECB;
            //padding mode(if any extra byte added)
            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(
                                 toEncryptArray, 0, toEncryptArray.Length);
            //Release resources held by TripleDes Encryptor                
            tdes.Clear();
            //return the Clear decrypted TEXT
            return UTF8Encoding.UTF8.GetString(resultArray);
        }

        public static string DecryptEntityCon()
        {
            string connectionString = new System.Data.EntityClient.EntityConnectionStringBuilder
            {
                Metadata = "res://*/VantageModel.csdl|res://*/VantageModel.ssdl|res://*/VantageModel.msl",
                Provider = "System.Data.SqlClient",
                ProviderConnectionString = MD5Encryption.Decrypt(ConfigurationManager.ConnectionStrings["VantageConnectionString"].ConnectionString, true) + ";MultipleActiveResultSets=true"
            }.ConnectionString;

            return connectionString;
        }
    }
}

现在可以使用用户名登录：admin，密码 - ：2FE3CB9E21922819E79A2781AF74E36D，但没有解密值。如何连接两个文件Decypt密码？