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Ada Security Library

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Ada Security provides a security framework which allows applications to define and enforce security policies. This framework allows users to authenticate by using OpenID Authentication 2.0 as well as OAuth 2.0 protocol. It allows a web application to integrate easily with Yahoo!, Facebook and Google+ authentication systems. The Ada05 library includes:

  • An OpenID client authentication,
  • An OAuth 2.0 client authentication,
  • An OpenID Connect authentication framework,
  • An OAuth 2.0 server authentication framework,
  • A policy based security framework to protect the resources

Ada Security Overview

The Ada Security library is used by the Ada Web Application to provide authentication and access control to users within the web applications.

Version 1.3.0 - May 2020

  • Add support to extend the authenticate manager and allow to use custom authentication through the Set_Default_Factory operation.

List all versions


To use Ada Security library, configure as follows:


The unit tests are built and executed with:

   make test

For the installation, use the following command:

   make install

The package provides a simple AWS server that illustrates the OpenID and OpenConnect authentication. Because OAuth2 relies exclusively on HTTPS, you must use an AWS server that has the SSL support. Build it as follows:

   gprbuild -Psamples

Before launching the demo server, you must update the '' file and change the lines that contain PUT-HERE-YOUR-FACEBOOK-xxx with your client ID and client secrets. This change is required by the OAuth and OpenID Connect framework only. Then, run the server:


and redirect your browser to:



The Ada Security sources as well as a wiki documentation is provided on:

Other Documentation

The OAuth literature is quite complete on the Internet and there are several good tutorials and documentation.


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