EbRGmtuh

1using System;
2using System.Collections.Generic;
3using System.Security.Cryptography;
4using System.Text;
5
6namespace PasswordHashing
7{
8    class Program
9    {
10        static readonly List<string> storedHashes = new List<string>();
11
12        static void Main(string[] args)
13        {
14            Console.Write("Введите пароль: ");
15            string password = Console.ReadLine();
16
17            string hash = HashPassword(password);
18            storedHashes.Add(hash);
19
20            Console.WriteLine($"Пароль: {password}");
21            Console.WriteLine($"Хэш: {hash}");
22
23            Console.Write("\nВведите пароль для проверки:");
24            string input = Console.ReadLine();
25
26            if (VerifyPassword(input))
27            {
28                Console.ForegroundColor = ConsoleColor.Green;
29                Console.WriteLine("Пароль верный!");
30            }
31            else
32            {
33                Console.ForegroundColor = ConsoleColor.Red;
34                Console.WriteLine("Неверный пароль!");
35            }
36
37            Console.ResetColor();
38        }
39
40        static string HashPassword(string password)
41        {
42            using (SHA256 sha256 = SHA256.Create())
43            {
44                byte[] bytes = Encoding.UTF8.GetBytes(password);
45                byte[] hashBytes = sha256.ComputeHash(bytes);
46
47                StringBuilder builder = new StringBuilder();
48
49                foreach (byte b in hashBytes)
50                {
51                    builder.Append(b.ToString("x2"));
52                }
53                
54                return builder.ToString();
55            }
56        }
57
58        static bool VerifyPassword(string inputPassword)
59        {
60            string inputHash = HashPassword(inputPassword);
61            return storedHashes.Contains(inputHash);
62        }
63    }
64}