Difference between revisions of "WISE-PaaS/Single Sign-On(SSO)"

Revision as of 09:39, 16 January 2017

Introduction

Single Sign-On (SSO) is part of Advantech WISE-PaaS cloud solution and  plays an important role in the interoperability of Internet identity. It provides a central login mechanism.

WISE-PaaS/Single Sign-On utilizes Keycloak which is an open source identity and access management for modern applications and services.

API Protocol Flow

The following is a basic standard workflow. It presents the key concept of Singn-On between each other.

• User/Resource owner : Who authorizes others to access Protected Resource. If the role is human, it means the end-user.
• Application/Client/Browser : An application ,client or a browser page represents the Resource Owner to access the Protected Resource.
• Authorize Server : The server issues the Access Token after user are authenticated. (WISE-PaaS/Single Sign-On server)
• Resource Server : The server hosting Protected Resource accept requests according to Access Token.

Here is a more detailed explanation of the steps in the diagram:

1. The application requests authorization to access service resources from the user
2. If the user authorized the request, the application receives an authorization grant
3. The application requests an access token from the authorization server (API) by presenting authentication of its own identity, and the authorization grant
4. If the application identity is authenticated and the authorization grant is valid, the authorization server (API) issues an access token to the application. Authorization is complete.
5. The application requests the resource from the resource server (API) and presents the access token for authentication
6. If the access token is valid, the resource server (API) serves the resource to the application

Another more detailed flow chart:

Features Overview

WISE-PaaS/Single Sign-On(SSO) which base on keycloak has the following features.

• Single-Sign On : Login once to multiple applications

• Standard Protocols : OpenID Connect, OAuth 2.0 and SAML 2.0

• Centralized Management : For admins and users

• Adapters : Secure applications and services easily

• High Performance : Lightweight, fast and scalable

• Clustering : For scalability and availability

• Themes : Customize look and feel

• Extensible : Customize through code

• Password Policies : Customize password policies

Components

WISE-PaaS/Single Sign-On plays as a public web server and provide client Adapters makes it really easy to secure applications. 

• OpenID Connect Server based on OAuth 2.0

    OpenID Connect 1.0 is a simple identity layer on top of the OAuth 2.0 protocol. It allows Clients to verify the identity of the End-User based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the End-User in an interoperable and REST-like manner.

• OpenID Connect Client

    OpenID Connect allows clients of all types, including Web-based, mobile, and JavaScript clients, to request and receive information about authenticated sessions and end-users. The specification suite is extensible, allowing participants to use optional features such as encryption of identity data, discovery of OpenID Providers, and session management, when it makes sense for them.

Implementation

WISE-PaaS provides a complete service for Single Sign-On. There are tree sections for developer to implement.

1. 'Settings on 'WISE-PaaS/Single Sign-On server
   •  Apply a realm administrator account for WISE-PaaS/Single Sign-On server. Please sen a request to WISE-Paas/OpenID Connect service manager by E-mail. And provide the following information
     1. ​Service name : [RMM] as your realm.
     2. Client name : [RMMClient] a client definition for a app to login in.
     3. User registration : [True/False] Enable/Disable user registeration.
     4. Administrator account : [RMMAdmin] Use this account to manage this realm. The default password is same as account name. Change password after first login
   • Setting your service on WISE-PaaS/Single Sign-On server
     1. Login WISE-PaaS Single Sign-On server
     2. Authorization Setting  Media:User Guide Authorization Setting
        • Enabled authorization on client setting.
        • Create a Resource : Creating the resources that you want to protect.
        • Create a Permission : A permission associates the object being protected and the policies that must be evaluated to decide whether access should be granted.
        • Create a Role : Use this type of policy to define conditions for your permissions where a set of one or more roles is permitted to access an object.
        • Create a User : Craete a login account for SSO with role mapping of client.
        • Evaluate : When designing your policies, you can simulate authorization requests to test how your policies are being evaluated with a json format result.
     3. Get Client App setting
        • Realm Public Key : Get the public key from Realms setting-> [Realm]->Keys-> Public key.
        • Client Credentials Secret : Get Secret from Clients->Credentials->Secret
2. Application for end user
   • Copy the json , html sample code to your local web site.
   • Modify json setting.
   • Once the test HTML page is opened, it is automatically directed to OpenID Connect Server.
   • While login success, it will automatically lead back to test page.
3. Verify Access Token on Resource Server
   • ​​Decode JWT access tokens
   • Response to client

Document

• WISE-PaaS/Single_Sign-On(SSO)_server_setting
• Application(Client)_Sample_code_(json)
• Application(Client)_Sample_code_(HTML)
• Resource_Server_jwt_Sample_code