Difference between revisions of "DE4A Common Components"
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Revision as of 15:50, 22 February 2022
This section provides an overview of the common components and specifications required for the evidence exchanges. A high-level conceptual diagram of the envisaged infrastructure, containing the main software components required for the first iteration of the pilots, is presented in the image below.
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 |
| Mocked IDK | Testing component for the IAL definition |
| 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. |
Common specifications
Third party specifications and components
It comprises a list of elements and a description of the third party libraries and components that have allowed to build the DE4A components faster and allowing expandability, therefore increasing the stability and robustness of the system.
Description of common software interfaces
REST APIs interfaces reference for most of the components involved in the message exchanging.
DE4A Logs and error messages
Definition and reference of the error coding and logs handling. Includes an standarised log and error messages within the DE4A project to provide a well understanding among the different components regarding their points of failure and 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.
DE4A SSI Authority Agent
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.
DE4A Playground joining stages for the first iteration
Besides the Playground as testbed, the final components developments and deployments had to be done, so this sections defines the different stages or milestones set from the Pilots perspective while they were gradually increasing their own infrastructure, and so stepping out from the Playground.