使用c#代码的用户登录模块，密码加密不起作用

using System;
using System.Security.Cryptography;

public class PasswordHasher
{
    public static string HashPassword(string password)
    {
        byte[] salt = GenerateSalt();
        byte[] hash = GenerateHash(password, salt);

        return Convert.ToBase64String(salt) + "|" + Convert.ToBase64String(hash);
    }

    public static bool VerifyPassword(string password, string hashedPassword)
    {
        string[] parts = hashedPassword.Split('|');
        byte[] salt = Convert.FromBase64String(parts[0]);
        byte[] hash = Convert.FromBase64String(parts[1]);

        byte[] newHash = GenerateHash(password, salt);

        return SlowEquals(hash, newHash);
    }

    private static byte[] GenerateSalt()
    {
        byte[] salt = new byte[16];
        using (var rng = new RNGCryptoServiceProvider())
        {
            rng.GetBytes(salt);
        }
        return salt;
    }

    private static byte[] GenerateHash(string password, byte[] salt)
    {
        using (var pbkdf2 = new Rfc2898DeriveBytes(password, salt, 10000))
        {
            return pbkdf2.GetBytes(32);
        }
    }

    private static bool SlowEquals(byte[] a, byte[] b)
    {
        uint diff = (uint)a.Length ^ (uint)b.Length;
        for (int i = 0; i < a.Length && i < b.Length; i++)
        {
            diff |= (uint)(a[i] ^ b[i]);
        }
        return diff == 0;
    }
}