DE4A common specifications and components it2
This section provides an overview of the common components and specifications required for the evidence exchanges. The image bellow depictes the target, general infrastructure of the DE4A network.
The following table describes the common components in the above diagram, leaving out those components that are developed or deployed directly by each DE4A participant, namely the Data Evaluator, the Data Owner and the eIDAS Nodes.
| Component | Description |
|---|---|
| DE4A Connector | Technical proxy that allows the final participants to send requests for evidence or responses to other final participants over an eDelivery communication environment |
| SML | The Service Metadata Locator. Reference instance in the DE4A network |
| SMP | Service Metadata Publisher |
| AS4 Gateway | AS4 protocol implementation for the message exchange |
| Central IAL | Central component that allows to retrieve the information of the IAL functionality and the content of the MOR component |
| SSI Authority Agent | Enterprise-level solution that enables issuing and submitting diplomas in the form of verifiable credentials/presentations to Issuers/Verifiers. |
| SSI Edge Agent | Mobile digital wallet solution that enables users to manage their digital diplomas and interact with the Issuer's/Verifier's portals. |
Getting started guide
When starting with iteration 2 developments, every partner should follow the getting started guide.
Checklist for Connectathons
A quick guide of points to consider and review prior to the Connectathon sessions has been developed to make the Connectathon sessions more productive. It is available here.
Common specifications
Usage of third-party specifications and components
It comprises a list of elements and a description of the third-party libraries and components that have made it possible to build the DE4A components more quickly and allow them to be extended, thus increasing the stability and robustness of the system.
eDelivery
RegRep
Kafka
Directory
Common behaviour and interactions between components
Introduction to the chapter, highlighting the fact that the description of the behaviour is done through communication diagrams. Links to the five communication diagrams and the data dictionary.
Central IAL interface
Summary of software interfaces
REST APIs interfaces refer to most of the components involved in the exchange of messages.
DE4A Logs and error messages
Definition and reference of error coding and logs handling. It includes standardised log and error messages within the DE4A project to provide a good understanding of the different components regarding their points of failure and the different states in which each system is placed.
Common Components
DE4A Connector
The main component of the DE4A communication infrastructure for processing request and response messages from DP/DCs. The DE4A connector handles the message exchange process and obtains information from different nodes like IDK or SMP for this purpose. It implements the AS4 Gateway functionality, so it can undertake either Requestor or Transferor roles.
Installation and configuration guide of the DE4A Connector it2
Step by step guide to successful configure an instance of the DE4A Connector. Find in this section all aspects related to the different configuration scenarios and keypoints of the system.
Central IAL
DE4A SSI Authority Agent
The enterprise-level component of the SSI infrastructure for issuing and validating diplomas in the form of Verifiable Credentials.
Installation and configuration guide of the DE4A SSI Authority Agent it2
Step-by-step guide for a successful configuration of an Authority Agent instance. Find in this section all aspects related to the different configuration scenarios and REST API endpoint information.
DE4A SSI Edge Agent
Testing infrastructure
DE4A Playground
It comprises a set of components and utilities provided for pilots and partners for testing purposes. In addition it can be used to replace some components that might not yet be available or that they need to be tested in a "real" environment.
Sample datasets
This page contains the information for the test cases available in the playground environment.
DE4A Member States Infrastructure
Status of the DE4A Member States infrastructure for the second iteration of the pilots, along with some useful information to bear in mind when setting up such infrastructure.