Mentorship Spotlight - Hyperledger AnonCreds v2 ZKP-based Credential Revocation Manager Implementation 2025 Update: Off to a Fast Start! Read on → Search Join About About Explore membership Members Technical Advisory Council Governing Board Speakers Bureau Staff FAQ Store Contact us Technologies Ledger technologies Interoperability Integration & implementation Decentralized identity Cryptographic tools & protocols Project matrix Labs All projects Deploy Certified service providers Vendor directory Training partners Participate Why get involved? How to contribute Contribute to code Host your project with us Regional chapters Special interest groups Job board Resources Linux Foundation ID Logos & guidelines Trademarks & guidelines Charter Code of conduct Github repos Discord Wiki Mailing lists Report a security bug Learn Case studies Training & certifications Use case tracker Member webinars Insights News Blog Announcements Newsletters Events Events Meetups Meeting calendar Join Follow Us Hyperledger AnonCreds | Mentorship Program Mentorship Spotlight - Hyperledger AnonCreds v2 ZKP-based Credential Revocation Manager Implementation Victor Huang | Jan 17, 2025 Project: Hyperledger AnonCreds v2 ZKP-based Credential Revocation Manager Implementation In today's digital world, privacy and security are more crucial than ever. Anonymous credentials, such as those provided by Hyperledger AnonCreds v2, an LF Decentralized Trust project, offer a powerful solution for maintaining user privacy while ensuring the integrity and verifiability of digital identities. It enables individuals to prove their qualifications, memberships, or other attributes without revealing any additional personal information. Building on the foundation of AnonCreds v2, the AnonCreds v2 ZKP-based Credential Revocation Manager is a significant leap forward in the realm of verifiable credentials. This mentorship project set out to enhance the scalability and privacy of credential revocation to enable efficient management even in systems handling millions of credentials. It aimed to develop a more secure and private framework for credential revocation, crucial for maintaining trust and compliance in digital interactions. What I Worked On and Accomplished As a mentee in the revocation project, my role involved several areas of developments that bridged cutting-edge cryptography with practical software solutions. Firstly, I engineered Foreign Function Interface (FFI) functions to integrate the revocation algorithm seamlessly between Rust and Python. This ensures that the complex cryptographic operations are abstracted away, which enhances the system's user-friendliness while maintaining security. Additionally, I developed the backend API calls using FastAPI. This Python-based framework facilitated the creation of scalable web services that are essential for managing the complex interactions within the revocation process. Through these APIs, the system could handle requests for updating credential and user statuses and fetching updated revocation proofs which are key operations that ensure credentials remain valid or are flagged when revoked. To support the deployment and scalability of these services, I also crafted Dockerfiles for both the revocation manager and witness manager components. These Docker containers simplified deployment across various environments and ensured consistent, isolated execution of services, which is crucial for maintaining the integrity and security of the revocation process. One of the key challenges I encountered during the project was to effectively handle the FFI calls between Rust and Python. The intricate details of Rust’s strict type system and ownership model, with its implications for memory safety and resource management being critical in the cryptographic domain we were navigating, required a significant adjustment on my part. Integrating Rust with Python, especially in managing byte streams and buffers for secure data transfer, added another layer of complexity to the project. Fortunately, my mentors, Mike and Stephen, were instrumental in guiding me through these challenges. They provided access to a reference code repository that served as a crucial learning tool, and dedicated many hours to explaining the nuances of the code and assisting in debugging sessions. Their hands-on support was vital in helping me navigate the complexities of cross-language integration and in understanding how to effectively manage data between Rust and Python. What’s Next This collaborative effort led to significant personal and professional growth that equips me with the skills to tackle similar challenges in the future and leaves me with a profound sense of accomplishment. Looking ahead, my experience with the project has shaped my career trajectory and professional aspirations. Having tackled the complexities, I am eager to embrace further challenges in these areas. As I move forward, I am committed to contributing to the community that has given me so much. I look forward to being part of solutions that shape the future of digital identity security, aiming to make a meaningful impact on how privacy and trust are managed in our increasingly digital world. View previous blog post Back to all blog posts View next blog post The latest community news in your inbox Select the checkboxes below for the monthly decentralized digest and dev/weekly newsletters About LF Decentralized Trust The Linux Foundation's flagship organization for the development and deployment of decentralized systems and technologies. About Members TAC Governing board Speakers bureau Staff FAQ Contact us Technologies Ledger technologies Interoperability Integration & implementation Decentralized identity Cryptographic tools & protocols Project matrix Labs Participate Why get involved? How to contribute Contribute to code Host your project with us Regional chapters Special interest groups Job board Deploy Certified service providers Vendor directory Training partners Resources Linux Foundation ID Logos & guidelines Trademarks & guidelines Charter Code of conduct Github repos Discord Wiki Mailing lists Report a security bug Learn Case studies Training & certifications Use case tracker Member webinars Insights Events Events Meetups Meeting calendar News Blog Announcements Newsletters Meeting Calendar Copyright © 2025 The Linux Foundation®. All rights reserved. LF Decentralized Trust is a trademark of The Linux Foundation. For a list of LF Decentralized Trust's trademarks, please see our Trademark Usage page. Linux is a registered trademark of Linus Torvalds. Privacy Policy and Terms of Use.