Iden3

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Frequently asked questions

What is iden3?

iden3 is a next-generation private access control protocol based on self-sovereign identity. It is designed for decentralised and trust-minimised environments. The protocol aims to empower individuals and create a more inclusive and egalitarian foundation for human relationships through open-source cryptography and decentralised technologies. It is based on Ethereum, inheriting its properties of decentralisation and security. The protocol includes an ID sponsor module, allowing developers to design applications where a developer-run account covers the costs of interacting with the blockchain for users. It also utilizes zkRollup technology for scalability at Layer 2, enabling high capacity at low cost on a public and permissionless infrastructure. The protocol uses Zero-Knowledge Proofs based on zk-SNARK, which provides a leading security standard and powerful privacy protection. Circom is a circuit programming language and compiler used in the protocol to define arithmetic circuits for Zero-Knowledge Proofs. The protocol's libraries, including CircomLib, SnarkJS, wasmsnark, and rapidSnark, provide templates and implementations for practitioners and developers.

What are the main features of iden3?

The main features of iden3 are:

1. Self-sovereign identity: iden3 is based on self-sovereign identity, allowing individuals to have control over their own identity and access rights.

2. Privacy-focused: iden3 prioritizes privacy for all users, aiming to create a more inclusive and egalitarian foundation for human relationships through open-source cryptography and decentralized technologies.

3. Decentralized: The iden3 protocol is built on Ethereum, inheriting its properties of high decentralization and security.

4. Open source: The protocol is open source, allowing for transparency and community collaboration.

5. Censorship-resistant infrastructure: iden3 is designed to be resistant to censorship, ensuring that access to the protocol is not controlled or restricted.

6. ID sponsor module: The protocol includes an ID sponsor module that allows developers to design applications in a way that a developer-run account covers the costs of interacting with the blockchain for users.

7. Scalability at Layer 2: The protocol will soon be scalable at Layer 2 using zkRollup technology, enabling high capacity at low cost on a public and permissionless infrastructure.

8. Battle-tested cryptography: iden3 utilizes the Zero-Knowledge proving system zk-SNARK, which provides a high level of security and privacy protection.

9. Efficient and flexible: The protocol is designed to be efficient, flexible, and developer-friendly, simplifying the construction process of arithmetic circuits in a reliable manner.

10. Expressivity and balance: iden3 aims to strike a balance between flexibility and control of arithmetic circuit designs, making privacy-preserving technologies more accessible to developers.

How does iden3 ensure privacy for all?

iden3 ensures privacy for all through its decentralized and trust-minimized approach to self-sovereign identity. The protocol is based on Ethereum, inheriting its properties of decentralization and security. It utilizes battle-tested cryptography, specifically the Zero-Knowledge proving system zk-SNARK, which is known for its scalability and privacy protection capabilities. This allows for the representation of any computational condition by an arithmetic circuit, enabling the generation of Zero-Knowledge Proofs to prove anything about identity with quick verification time. The protocol also includes an ID sponsor module, which allows developers to cover the costs of interacting with the blockchain for users, making self-sovereign identity accessible to all. Additionally, the protocol is designed to be scalable at Layer 2 using zkRollup technology, ensuring high capacity at low cost on a public and permissionless infrastructure. Circom, the framework used by iden3, simplifies the construction process of arithmetic circuits, bridging the gap between developers and privacy-preserving technologies and promoting the adoption of privacy by design.

Is iden3 an open-source protocol?

Yes, iden3 is an open-source protocol. Their website states that the aim of the iden3 protocol is to empower people and create a more inclusive and egalitarian foundation through open-source cryptography and decentralised technologies. Additionally, Circom, the circuit programming language and compiler used in the iden3 protocol, is an open-source library of templates that is publicly available to practitioners and developers.

What is the tech stack used by iden3 for self-sovereign identity?

The tech stack used by iden3 for self-sovereign identity includes the following components:

1. Ethereum: The iden3 protocol is based on Ethereum, which provides a high degree of decentralization and security.

2. ID Sponsor Module: This component allows developers to design their applications in a way that a developer-run account covers all the costs of interacting with the blockchain for users, ensuring accessibility for all.

3. zkRollup Technology: The protocol will soon be scalable at Layer 2 using zkRollup technology, enabling high capacity at ultra-low cost on a public and permissionless infrastructure.

4. Zero-Knowledge Proofs (zk-SNARK): The use of zk-SNARK, a Zero-Knowledge proving system, ensures security and privacy. It allows any computational condition to be represented by an arithmetic circuit, offering universality and flexibility for zkProof.

5. Circom: Circom is a circuit programming language and compiler used to design and create arithmetic circuits for Zero-Knowledge proofs. It is written in Rust and provides an efficient circuit framework for programmable zero-knowledge.

6. CircomLib: CircomLib is an open-source library of templates containing multiple circuit templates that have been reviewed and proven to work. It is publicly available to practitioners and developers.

7. Proving Systems: The implementations of proving systems, such as SnarkJS (JavaScript), wasmsnark (Web Assembly), and rapidSnark (C++ and Intel Assembly), are available in iden3's libraries. The team is also working on the development of RapidPLONK and a run-time architecture for ARM processors.

How does iden3 achieve decentralisation?

iden3 achieves decentralisation through several key factors:

1. Based on Ethereum: The iden3 protocol is built on the Ethereum blockchain, which is known for its high degree of decentralisation and security.

2. Open-source: The protocol is open-source, meaning that the code is publicly available and can be audited by anyone. This promotes transparency and allows for community participation in the development and improvement of the protocol.

3. Censorship-resistant infrastructure: The iden3 protocol is designed to be resistant to censorship, meaning that it cannot be easily controlled or manipulated by any central authority. This further enhances decentralisation and ensures that users have control over their own identities.

4. ID sponsor module: The protocol includes an ID sponsor module that allows developers to cover the costs of interacting with the blockchain for users. This ensures that access to self-sovereign identity is available to all, regardless of financial resources.

5. Scalability at Layer 2: The protocol is designed to be scalable at Layer 2 using zkRollup technology. This enables high capacity at low cost on a public and permissionless infrastructure, making it accessible to a larger number of users.

6. Zero-Knowledge Proofs: The iden3 protocol utilizes Zero-Knowledge Proofs based on zk-SNARK, which is a leading cryptographic system for blockchain scalability and privacy protection. This allows for efficient and secure verification of identity-related computations.

Overall, iden3 achieves decentralisation by leveraging the properties of Ethereum, incorporating open-source principles, ensuring censorship resistance, providing accessibility through the ID sponsor module, enabling scalability at Layer 2, and utilizing battle-tested cryptography.

Is iden3 scalable?

iden3 protocol will soon be scalable at Layer 2 thanks to zkRollup technology. This technology enables high capacity at ultra-low cost on a public and permissionless infrastructure, ensuring access for all. Therefore, based on this information, it can be concluded that iden3 is scalable.