Python blockchain-based Decentralized Identity Management (DID) system
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A Blockchain-based Decentralized Identity Management (DID) system enables individuals to own and control their identities without relying on a central authority.
To build a simple implementation of a basic DID system, we can use blockchain technology to store identity-related information, ensuring transparency, security, and privacy.
We'll use hashlib for cryptographic hashing and json for storing identity data and ed25519 elliptic curve signature cryptographic algorithm, which is known for its security, efficiency, and faster operations.
Key Components:
- Blockchain: A basic blockchain structure that stores identity information in blocks.
- Identity Management: An identity will be associated with a DID and stored in the blockchain.
- Public/Private Key: The DID will use asymmetric encryption (public/private key pairs) for managing identity-related actions securely.
Notes:
Security Considerations: This is a simplified implementation for demonstration purposes. In a real-world system, additional features like secure key storage, encryption, and more robust identity verification mechanisms would be required.
Scalability: This example uses a simple blockchain. For production systems, you would want to use a more advanced and scalable solution, such as Ethereum or Hyperledger Indy, which provide specialized DID frameworks.
Signature Generation: The signature verification here is a placeholder, as generating and verifying RSA signatures requires using the private key to sign messages and the public key to verify them.
This implementation provides a foundation for understanding how a decentralized identity management system works using blockchain, but it would need further expansion for use in a real-world scenario.
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To get a local copy up and running follow these simple example steps.
This example requires Python 3.10 or higher version.
Install the ed25519 library using pip3 tool.
- pip or pip3
pip3 install ed25519
- Clone the repo
git clone https://github.com/ralucanegre/pydids.git
- Install python packages
pip3 install -r requirements.txt
- Change git remote url to avoid accidental pushes to base project
git remote set-url origin ralucanegre/pydids git remote -v # confirm the changes - Run python app
python did_runner.py
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See the open issues for a full list of proposed features (and known issues).
Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.
If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement". Don't forget to give the project a star! Thanks again!
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git checkout -b feature/AmazingFeature) - Commit your Changes (
git commit -m 'Add some AmazingFeature') - Push to the Branch (
git push origin feature/AmazingFeature) - Open a Pull Request
Distributed under the Unlicense License. See LICENSE.txt for more information.