using Newtonsoft.Json;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.Text;

using System.Threading.Tasks;

​

namespace ConsoleApp1

{

    [AttributeUsage(AttributeTargets.Property, Inherited = false)]

    public class SecureSerializationAttribute : Attribute

    {

​

    }

​

​

​

    public class ObjectBase

    {

        [OnSerializing()]

        internal void OnSerializingMethod(StreamingContext context)

        {

            var props = this.GetType().GetProperties().Where(

                prop => Attribute.IsDefined(prop, typeof(SecureSerializationAttribute)));

​

            foreach (var prop in props)

            {

                var propValue = prop.GetValue(this).ToString();

                var newValue = propValue.GetHashCode().ToString();

                Program2._cache.Add(prop.Name, propValue);

                prop.SetValue(this, newValue);

            }

        }

​

        [OnSerialized()]

        internal void OnSerializedMethod(StreamingContext context)

        {

​

        }

​

        [OnDeserializing()]

        internal void OnDeserializingMethod(StreamingContext context)

        {

        }

​

        [OnDeserialized()]

        internal void OnDeserializedMethod(StreamingContext context)

        {

            var props = this.GetType().GetProperties().Where(

                prop => Attribute.IsDefined(prop, typeof(SecureSerializationAttribute)));

​

            foreach (var prop in props)

            {

                var newValue = Program2._cache[prop.Name];

                prop.SetValue(this, newValue);

            }

        }

    }

​

    public class MyObject : ObjectBase

    {

        [SecureSerializationAttribute]

        public string MyProperty { get; set; }

    }

​

​

​

    public class Program2

    {

        internal static Dictionary<string, string> _cache = new Dictionary<string, string>();

        public static void Main(string[] args)

        {

            var myObject = new MyObject()

            {

                MyProperty = "serdar"

            };

            var json = JsonConvert.SerializeObject(myObject);

            Console.WriteLine(json);

​

            var obj = JsonConvert.DeserializeObject<MyObject>(json);

            Console.WriteLine(obj.MyProperty);

        }

    }

}

​