ProtectionProviderServiceController.cs

using Microsoft.AspNetCore.Mvc;

namespace DNTCommon.Web.Core.TestWebApp.Controllers;

public class TestModel
{
    public int Id { set; get; }
    public string Name { set; get; }
}

public class ProtectionProviderServiceController : Controller
{
    private readonly IProtectionProviderService _protectionProviderService;

    public ProtectionProviderServiceController(IProtectionProviderService protectionProviderService)
    {
        _protectionProviderService = protectionProviderService;
    }

    public IActionResult Index()
    {
        ViewBag.Msg = "This is a test";

        ViewBag.EncryptedMsg1 = _protectionProviderService.Encrypt(ViewBag.Msg);
        ViewBag.DecryptMsg1 = _protectionProviderService.Decrypt(ViewBag.EncryptedMsg1);

        ViewBag.EncryptedMsg2 = _protectionProviderService.Encrypt(ViewBag.Msg);
        ViewBag.DecryptMsg2 = _protectionProviderService.Decrypt(ViewBag.EncryptedMsg2);

        var model = new TestModel { Id = 1, Name = "Test" };
        ViewBag.EncryptedMsg3 = _protectionProviderService.EncryptObject(model);
        ViewBag.DecryptMsg3 = _protectionProviderService.DecryptObject<TestModel>(ViewBag.EncryptedMsg3).Name;

        return View();
    }
}