using System;

using System.Collections.Generic;

using System.Linq;

using System.Security.Cryptography;

using System.Text;

public class Program

{

​

    public static void Main()

    {

        string testPassword = "YyH+p5dZws(sgfu$";

        var creds = EncryptionHelper.CreateHash(testPassword);

        Console.WriteLine($"Registered Password: {testPassword}\tSalt: {creds.salt}\tHash: {creds.hash}");

        var loginHash = EncryptionHelper.GetHash(creds.salt, testPassword);

        Console.WriteLine($"Original Hash: {creds.hash}");

        Console.WriteLine($"     New Hash: {loginHash}");

        Console.WriteLine($"Result: {loginHash == creds.hash}");

    }

​

}

​

public class EncryptionHelper

{

    public const int SALT_SIZE = 128;

    public const int HASH_SIZE = 128;

    public const int ITERATIONS = 100000;

​

    // On declaring a new password for example

    public static (string salt, string hash) CreateHash(string input)

    {

        var provider = new RNGCryptoServiceProvider();

        byte[] salt = new byte[SALT_SIZE];

        provider.GetBytes(salt);

​

        var pbkdf2 = new Rfc2898DeriveBytes(input, salt, ITERATIONS);

        var hash = pbkdf2.GetBytes(HASH_SIZE);

​

        var saltString = Convert.ToBase64String(salt);

        var hashString = Convert.ToBase64String(hash);

        return (saltString, hashString);

    }

​

    // To check if Users password input is correct for example

    public static string GetHash(string saltString, string passwordString)

    {

        byte[] salt = Convert.FromBase64String(saltString);       

        var pbkdf2 = new Rfc2898DeriveBytes(passwordString, salt, ITERATIONS);

        return Convert.ToBase64String(pbkdf2.GetBytes(HASH_SIZE));

    }

}