Asp.Net Web Api基于令牌的授权,没有OWIN和AspNet.Identity

我打算使用下面的代码来实现我的web api安全性,但我不确定这是否足够安全和??合理.我不想使用OWIN和AspNet.Identity,因为它对我来说非常复杂,我不完全理解,我不知道我如何定制数据库表,用户角色等.但我的方式很简单,非常可定制我.

这是CustomAuthorizeAttribute;

public class CustomAuthorize : AuthorizeAttribute
{
    public override void OnAuthorization(HttpActionContext actionContext)
    {
        if ((actionContext.Request.Headers.GetValues("Host").FirstOrDefault().Contains("localhost:15742")))
        {
            IEnumerable<string> access_token;
            if (actionContext.Request.Headers.TryGetValues("Authorization",out access_token))
            {
                var user = GetUserByToken(access_token);
                if (user!=null && !user.TokenIsExpired)
                {
                    HttpContext.Current.Response.AddHeader("WWW-Authenticate","Custom " + access_token.FirstOrDefault());
                    return;
                }
                else
                {
                    actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized);
                    HttpContext.Current.Response.AddHeader("WWW-Authenticate","Custom");
                    return;
                }
            }
            else
            {
                actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized);
            }
        }
        else
        {
            actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Forbidden);
        }
    }
}

这是前端使用

<script type="text/javascript">
    $(function () {
        var access_token = $.cookie('access_token');
        if (access_token == undefined) {
            $.cookie('access_token','test-token');
        }


        $.ajax({
            url: '/api/account',headers: { access_token: access_token },success: function (data) {
                document.write(data.name + " " + data.lastname);
            }
        });
    });
</script>

顺便说一句,我为我的英语感到抱歉.我希望你理解我的问题,我在等你的建议.

public override void OnAuthorization(HttpActionContext actionContext)
    {
        IEnumerable<string> access_token;

        if (!actionContext.Request.Headers.TryGetValues("Authorization",out access_token))
        {
            actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized);
            return;
        }

        var user = GetUserByToken(access_token);

        if (user == null || user.TokenIsExpired)
        {
            actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized);                
            return;
        }

        // OK
        return;
    }

public void ConfigureAuth(IAppBuilder app)
{
     app.UseGoogleAuthentication(
         clientId: "000-000.apps.googleusercontent.com",clientSecret: "00000000000");
}