Core Technologies and Key Components
Encryption and Privacy Protection Mechanisms
Zero-Knowledge Proof (ZKP)
The system leverages Zero-Knowledge Proof technology to enable "selective disclosure", allowing the Holder to prove that they meet specific conditions (e.g., age, identity status) without revealing their complete identity data. The verification process is securely executed on-chain, effectively preventing credential data from being copied or tampered with.
Threshold Keys and Multi-Party Computation (MPC)
To encrypt the Holder's original identity data, the system adopts threshold key technology, where the Holder retains a share of the key. Through Multi-Party Computation (MPC), data is encrypted while ensuring its integrity and confidentiality.
Efficient On-Chain Data Structure and Storage
Claim Tree (Merkle Tree) Structure
To reduce on-chain storage costs and enhance data verification efficiency, AIR Credential organizes credential data using a Merkle Tree structure. This design minimizes data redundancy while enabling fast verification of the consistency and authenticity of credentials through tree-based proofs.
Decentralized Storage
All encrypted credential data (including VCs, keys, and original data) is stored in dStorage. This ensures data privacy and enables seamless access across devices and applications without relying on centralized servers.