using System;

using System.IO;

using System.Security.Cryptography;

public class Program

{

    public static void Main()

    {

        string token = "4444444444444444";

        Console.WriteLine(token);

        var encreptedToken = EncryptTextWithPassword(token);

        Console.WriteLine(encreptedToken);

        var decryptedToken = DecryptTextWithPassword(encreptedToken);

        Console.WriteLine(decryptedToken);

    }

    public static string EncryptTextWithPassword(string value)

{

    string password = "your-encryption-password"; // Replace with your actual password

​

    // Generate a random Salt

    var salt = Guid.NewGuid().ToByteArray();

    using var aes = Aes.Create();

    var key = new Rfc2898DeriveBytes(password, salt, 10000, HashAlgorithmName.SHA256).GetBytes(32);

    aes.Key = key;

    aes.GenerateIV();

    var iv = aes.IV;

​

    using var encryptor = aes.CreateEncryptor(aes.Key, iv);

    using var ms = new MemoryStream();

    using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))

    using (var sw = new StreamWriter(cs))

    {

        sw.Write(value);

    }

​

    var encryptedContent = ms.ToArray();

​

    // Combine Salt, IV, and encrypted content

    var result = new byte[salt.Length + iv.Length + encryptedContent.Length];

    Buffer.BlockCopy(salt, 0, result, 0, salt.Length);

    Buffer.BlockCopy(iv, 0, result, salt.Length, iv.Length);

    Buffer.BlockCopy(encryptedContent, 0, result, salt.Length + iv.Length, encryptedContent.Length);

​

    return Convert.ToBase64String(result);

}

​

public static string DecryptTextWithPassword(string value)

{

    string password = "your-encryption-password"; // Replace with your actual password

    var fullCipher = Convert.FromBase64String(value);

​

    using var aes = Aes.Create();

​

    // Extract Salt, IV, and encrypted content

    var saltLength = 16; // Assuming GUID (128 bits = 16 bytes)

    var ivLength = aes.BlockSize / 8;

    var salt = new byte[saltLength];

    var iv = new byte[ivLength];

    var cipher = new byte[fullCipher.Length - saltLength - ivLength];

​

    Buffer.BlockCopy(fullCipher, 0, salt, 0, saltLength);

    Buffer.BlockCopy(fullCipher, saltLength, iv, 0, ivLength);

    Buffer.BlockCopy(fullCipher, saltLength + ivLength, cipher, 0, cipher.Length);

​

    var key = new Rfc2898DeriveBytes(password, salt, 10000, HashAlgorithmName.SHA256).GetBytes(32);

    aes.Key = key;

    aes.IV = iv;

​

    using var decryptor = aes.CreateDecryptor(aes.Key, aes.IV);

    using var ms = new MemoryStream(cipher);

    using var cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read);

    using var sr = new StreamReader(cs);

​

    return sr.ReadToEnd();

}

​

}