Introduction to Decentralized Identifiers (DIDs)
If you’re delving into decentralized digital identity (SSI), understanding Decentralized Identifiers (DIDs) is crucial. DIDs are unique identifiers that users can create and control without relying on third parties. They use cryptographic elements (public and private keys) to demonstrate ownership. At Extrimian, we provide comprehensive guidance to help you choose the right DID method for your needs.
Disclaimer
This article covers only a few of the many points to consider when choosing a DID method. For a deeper understanding, we invite you to watch the following Extrimian Academy Masterclass: What to consider before choosing a DID Method.
Understanding DID Documents
Each DID comes with a DID document. This is a standard file that contains the DID controller’s public key, possibly other keys, and relevant metadata. This document is key for verifying the DID’s authenticity and enabling digital authentication and signing.
What Is a DID Method?
A DID method is a technical specification detailing how DIDs and their documents are created, resolved, and managed across systems. DID methods can vary, catering to different functionalities and infrastructure needs.
Learn more about DIDs or Decentralized Identifiers with this: DIDs Wiki
Key Factors to Consider When Choosing a DID Method
Subject of the DID
- Individuals: Data protection regulations like GDPR impose strict requirements that DID methods must meet, including the ability to delete personal data.
- Organizations: Often require advanced functionalities like managing multiple authorized signatories.
- Objects (IoT): Need to support a high volume of transactions and secure interactions.
Legal and Regulatory Framework
The legal and regulatory environment is crucial when selecting a DID method. Privacy and data protection laws vary across jurisdictions and can influence the choice of method and infrastructure used.
Required Functionality vs. Technical Complexity
It’s important to balance the functionality you need against the technical complexity and infrastructure requirements. Some DID methods offer advanced features like key rotation and designated signatories but may be more costly to implement and maintain.
Regulation Compatibility
To comply with data protection regulations, it’s essential to choose a DID method that allows for efficient modification or deletion of personal information to respect privacy rights like the right to be forgotten.
Examples of DID Methods
- DID Web: Uses standard URLs for resolvability via HTTP/S. Ideal for web interoperability.
- DID Key: Creates DIDs directly from cryptographic keys. Suitable for straightforward setups.
- DID ION: Based on Bitcoin, it offers a scalable and secure solution. Recommended for high-security needs.
- DID QuarkID: A decentralized, open, extensible, and multi-chain SSI protocol. Perfect for flexible digital identity management in Latin America.
For more examples, visit the DIF documentation.
Quick Guide: 10 Questions to Choose a DID Method
Here’s a quick guide from Extrimian with key questions to help you select a DID method that fits your legal, security, and functionality needs:
- What type of entity does the DID represent (individual, organization, IoT device)?
- What are the legal and regulatory requirements in the entity’s jurisdiction?
- Does the DID method allow for data deletion to comply with regulations like GDPR?
- What level of security is required for the specific application?
- What advanced functionalities are needed (key rotation, multiple signatories, etc.)?
- What is the estimated cost of implementation and maintenance of the DID method?
- Is it necessary for the DID method to support a high volume of transactions?
- How critical are ease of resolution and web interoperability for the application?
- Does the DID method allow for efficient modification or deletion of personal information?
- How flexible is the DID method to adapt to future needs and technological changes?
Conclusion
Choosing a DID method involves a detailed understanding of the subject, legal and regulatory requirements, and specific functional needs against technical complexity and costs. At Extrimian, we can assist you with our expertise in defining and implementing suitable solutions. Contact us for more information and support.
Read mroa abour this technology and how to build a DID with teh Extrimian Technical Documentation: How to Create a DID.
