did:m2m

M2M DID Method is a decentralized identifier solution designed for enterprise blockchain environments, specifically integrated with Blockchain as a Service (BaaS) platforms. Built on Hyperledger Indy and Hyperledger Fabric, this method is part of the ACCIO platform which provides Self-Sovereign Identity (SSI) and Verifiable Credentials capabilities.

The method enables secure digital identity management through a combination of blockchain-based authentication and credential verification. Each DID is uniquely generated using ECC (Elliptic-curve Cryptography) and encoded in Base58 format. The system supports both ed25519 and secp256r1 cryptographic algorithms for key generation.

Key features include:

• Multi-tenancy support for enterprise environments
• Agent-based architecture for credential management
• Integration with BaaS platforms
• Support for DIDComm V2 protocol
• Privacy-preserving design that keeps personal data off-chain

The method is particularly notable for its:

• Enterprise-focused implementation
• Integration with cloud services through BYOC/BYOS capabilities
• Comprehensive mediator infrastructure for agent communication
• Support for both JWT and AnonCreds credential formats

Technical Implementation:

1. DID Generation and Structure:

• Format: did:m2m:<base58-encoded-id>
• The identifier uses a 22-character Base58 encoding
• Generated from ECC public keys

  Example: did:m2m:Th7MpTaRZVRYnPiabds81Y

2. Resolution Process:

• Follows W3C DIDs v1.0 specification
• Implements DIF DID Resolution v0.3
• Resolves through ACCIO Platform infrastructure

3. Key Management:

• Supports multiple verification methods
• Uses Ed25519VerificationKey2018 for key representation
• Enables key rotation and updates
• Implements deactivation mechanism through key nullification

4. Security Features:

• Private key isolation
• No personal data storage in DID Documents
• Encrypted personal data storage on user devices
• Agent-based security model

5. Technology Stack:

• Built on Hyperledger Indy blockchain
• Implements DIDComm V2 protocol
• Uses Scala-based agent implementation
• Supports HTTP event notifications
• Integrates with BaaS infrastructure

The method includes comprehensive CRUD operations:

1. Create: Generates keypairs, DID, and DID Document
2. Read: Resolves DID Documents per W3C specifications
3. Update: Modifies document properties and verification methods
4. Deactivate: Permanently disables DIDs through key nullification