Express Cookie Session Generate Keys

Posted By admin On 10.04.20
  1. Express Cookie Session Generate Keys 2017
  2. Express Cookie Session Generate Keys Download
  3. Express Cookie Session

Parse Cookie header and populate req.cookies with an object keyed by the cookie names. Optionally you may enable signed cookie support by passing a secret string, which assigns req.secret so it may be used by other middleware. OAS 3 This page applies to OpenAPI 3 – the latest version of the OpenAPI Specification. Cookie Authentication Cookie authentication uses HTTP cookies to authenticate client requests and maintain session information. It works as follows: The client sends a login request to the server. On the successful login, the server response includes the Set-Cookie header that contains the cookie name.

We can then look up among all the sessions, and pick the right session, and hand them in to PHP as $session, okay? So the cookie chooses the session for us. So, PHP has good support for sessions built in. We basically establish or create a new PHP session by calling sessionstart before any output. If we have multiple objects pushed in cookies then we can access specific cookie using req.cookie.cookiename. Adding Cookie with expiration Time We can add a cookie with some expiration time i.e. After that time cookies will be destroyed automatically. For this, we need to pass an extra property to the res.cookie object while setting the cookies. Aug 24, 2018  A user session can be stored in two main ways with cookies: on the server or on the client. This module stores the session data on the client within a cookie, while a module like express-session stores only a session identifier on the client within a cookie and stores the session data on the server, typically in a database.

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By Rick Anderson

I am making a part of this chapter available in the form of a tutorial on Express.js sessions for those who haven’t bought the book yet. Sessions in Express.js. There are two broad ways of implementing sessions in Express – using cookies and using a session store at the backend. Mar 25, 2015  NodeJS & Express Tutorial series! Tutorial 4: Cookie Parser & Express session. Viewing and signing cookies for authentication Tutorial Source can be found @.

Websites often consist of individual web apps working together. To provide a single sign-on (SSO) experience, web apps within a site must share authentication cookies. To support this scenario, the data protection stack allows sharing Katana cookie authentication and ASP.NET Core cookie authentication tickets.

In the examples that follow:

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  • The authentication cookie name is set to a common value of .AspNet.SharedCookie.
  • The AuthenticationType is set to Identity.Application either explicitly or by default.
  • A common app name is used to enable the data protection system to share data protection keys (SharedCookieApp).
  • Identity.Application is used as the authentication scheme. Whatever scheme is used, it must be used consistently within and across the shared cookie apps either as the default scheme or by explicitly setting it. The scheme is used when encrypting and decrypting cookies, so a consistent scheme must be used across apps.
  • A common data protection key storage location is used.
    • In ASP.NET Core apps, PersistKeysToFileSystem is used to set the key storage location.
    • In .NET Framework apps, Cookie Authentication Middleware uses an implementation of DataProtectionProvider. DataProtectionProvider provides data protection services for the encryption and decryption of authentication cookie payload data. The DataProtectionProvider instance is isolated from the data protection system used by other parts of the app. DataProtectionProvider.Create(System.IO.DirectoryInfo, Action<IDataProtectionBuilder>) accepts a DirectoryInfo to specify the location for data protection key storage.
  • DataProtectionProvider requires the Microsoft.AspNetCore.DataProtection.Extensions NuGet package:
    • In ASP.NET Core 2.x apps, reference the Microsoft.AspNetCore.App metapackage.
    • In .NET Framework apps, add a package reference to Microsoft.AspNetCore.DataProtection.Extensions.
  • SetApplicationName sets the common app name.
Cookie

Share authentication cookies with ASP.NET Core Identity

When using ASP.NET Core Identity:

  • Data protection keys and the app name must be shared among apps. A common key storage location is provided to the PersistKeysToFileSystem method in the following examples. Use SetApplicationName to configure a common shared app name (SharedCookieApp in the following examples). For more information, see Configure ASP.NET Core Data Protection.
  • Use the ConfigureApplicationCookie extension method to set up the data protection service for cookies.
  • The default authentication type is Identity.Application.

In Startup.ConfigureServices:

Share authentication cookies without ASP.NET Core Identity

When using cookies directly without ASP.NET Core Identity, configure data protection and authentication in Startup.ConfigureServices. In the following example, the authentication type is set to Identity.Application:

Share cookies across different base paths

An authentication cookie uses the HttpRequest.PathBase as its default Cookie.Path. If the app's cookie must be shared across different base paths, Path must be overridden:

Share cookies across subdomains

When hosting apps that share cookies across subdomains, specify a common domain in the Cookie.Domain property. To share cookies across apps at contoso.com, such as first_subdomain.contoso.com and second_subdomain.contoso.com, specify the Cookie.Domain as .contoso.com:

Encrypt data protection keys at rest

For production deployments, configure the DataProtectionProvider to encrypt keys at rest with DPAPI or an X509Certificate. For more information, see Key encryption At rest in ASP.NET Core. In the following example, a certificate thumbprint is provided to ProtectKeysWithCertificate:

Share authentication cookies between ASP.NET 4.x and ASP.NET Core apps

ASP.NET 4.x apps that use Katana Cookie Authentication Middleware can be configured to generate authentication cookies that are compatible with the ASP.NET Core Cookie Authentication Middleware. This allows upgrading a large site's individual apps in several steps while providing a smooth SSO experience across the site.

Cookie

When an app uses Katana Cookie Authentication Middleware, it calls UseCookieAuthentication in the project's Startup.Auth.cs file. ASP.NET 4.x web app projects created with Visual Studio 2013 and later use the Katana Cookie Authentication Middleware by default. Although UseCookieAuthentication is obsolete and unsupported for ASP.NET Core apps, calling UseCookieAuthentication in an ASP.NET 4.x app that uses Katana Cookie Authentication Middleware is valid.

An ASP.NET 4.x app must target .NET Framework 4.5.1 or later. Otherwise, the necessary NuGet packages fail to install.

To share authentication cookies between an ASP.NET 4.x app and an ASP.NET Core app, configure the ASP.NET Core app as stated in the Share authentication cookies among ASP.NET Core apps section, then configure the ASP.NET 4.x app as follows.

Confirm that the app's packages are updated to the latest releases. Install the Microsoft.Owin.Security.Interop package into each ASP.NET 4.x app.

Locate and modify the call to UseCookieAuthentication:

  • Change the cookie name to match the name used by the ASP.NET Core Cookie Authentication Middleware (.AspNet.SharedCookie in the example).
  • In the following example, the authentication type is set to Identity.Application.
  • Provide an instance of a DataProtectionProvider initialized to the common data protection key storage location.
  • Confirm that the app name is set to the common app name used by all apps that share authentication cookies (SharedCookieApp in the example).

If not setting http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier and http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider, set UniqueClaimTypeIdentifier to a claim that distinguishes unique users.

App_Start/Startup.Auth.cs:

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When generating a user identity, the authentication type (Identity.Application) must match the type defined in AuthenticationType set with UseCookieAuthentication in App_Start/Startup.Auth.cs.

Models/IdentityModels.cs:

Use a common user database

When apps use the same Identity schema (same version of Identity), confirm that the Identity system for each app is pointed at the same user database. Otherwise, the identity system produces failures at runtime when it attempts to match the information in the authentication cookie against the information in its database.

When the Identity schema is different among apps, usually because apps are using different Identity versions, sharing a common database based on the latest version of Identity isn't possible without remapping and adding columns in other app's Identity schemas. It's often more efficient to upgrade the other apps to use the latest Identity version so that a common database can be shared by the apps.

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