Simple Password Manager Using System.Security

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System.Security;
using System.Runtime.InteropServices;

namespace Aleph.SSM
{
    [Serializable]
    public class Storage
    {
        [Serializable]
        public struct Entry
        {
            string name;
            public string Name
            {
                get { return this.name; }
                set { this.name = value; }
            }
            string user;
            public string User
            {
                get { return this.user; }
                set { this.user = value; }
            }
            string password;
            public string Password
            {
                get { return this.password; }
            }
            string site;
            public string Site
            {
                get { return this.site; }
                set { this.site = value; }
            }
            string comment;
            
            public string Comment
            {
                get { return this.comment; }
                set { this.comment = value; }
            }

            public Entry(string name, string user, SecureString password, string site, string comment)
            {
                this.name = name;
                this.user = user;
                this.comment = comment;
                this.site = site;
                using (CryptoCore cryptor = new CryptoCore())
                {
                    IntPtr ptr = Marshal.SecureStringToBSTR(password);
                    this.password = cryptor.EncryptString(Marshal.PtrToStringAuto(ptr));
                    Marshal.ZeroFreeBSTR(ptr);
                }
            }

            public void UpdatePassword(SecureString password)
            {
                using (CryptoCore cryptor = new CryptoCore())
                {
                    IntPtr ptr = Marshal.SecureStringToBSTR(password);
                    this.password = cryptor.EncryptString(Marshal.PtrToStringAuto(ptr));
                    Marshal.ZeroFreeBSTR(ptr);
                }
            }
        }

        public List<Entry> Entries;

        public Storage()
        {
            Entries = new List<Entry>();
        }

        public Storage(string filePath)
        {
            Entries = new List<Entry>();
            using (CryptoCore cryptor = new CryptoCore())
            {
                byte[] storage = cryptor.DecryptBuffer(File.ReadAllBytes(filePath));
                using (MemoryStream ms = new MemoryStream(storage))
                {
                    BinaryFormatter bf = new BinaryFormatter();
                    Entries = ((Storage)bf.Deserialize(ms)).Entries;
                }
            }
        }

        public void Serialize(string filePath)
        {
            byte[] storage;
            using (MemoryStream ms = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(ms, this);
                storage = ms.ToArray();
            }
            using (CryptoCore cryptor = new CryptoCore())
            {
                File.WriteAllBytes(filePath, cryptor.EncryptBuffer(storage));
            }
        }
    }
}