DID - Galactic-Code-Developers/NovaNet GitHub Wiki

Decentralized Identity (DID): Quantum-Resistant Self-Sovereign Identity

Introduction

Decentralized Identity (DID) is a self-sovereign identity (SSI) model that allows users to own, control, and verify their digital identities without relying on centralized authorities.

In traditional identity systems, users must trust governments, corporations, or third parties to manage their personal data, making them vulnerable to hacks, data breaches, and identity theft. DID eliminates these risks by utilizing blockchain technology, post-quantum cryptography (PQC), and zero-knowledge proofs (ZKPs) to secure identity verification.

  • Ensures privacy and control over identity credentials.
  • Prevents identity fraud, phishing, and centralized data breaches.
  • Enables secure and instant KYC/AML verification without third-party trust.

1. How DID Works

DID enables users to generate, store, and manage digital identities using blockchain-based cryptographic proofs. A DID consists of:

  1. Decentralized Identifiers (DIDs) – Unique, cryptographically verifiable IDs.
  2. Verifiable Credentials (VCs) – Signed attestations issued by trusted entities.
  3. Zero-Knowledge Proofs (ZKPs) – Privacy-preserving verification of credentials.
  • Users have complete control over their personal data.
  • No centralized authority can revoke or alter identity records.

1.1 DID Structure

A Decentralized Identifier (DID) follows a standard format:

{
  "id": "did:novanet:123456abcdef",
  "controller": "0xA3F1...BC8D",
  "authentication": [
    {
      "type": "QuantumResistantSignature",
      "publicKey": "KJSD8723HJS8...",
      "algorithm": "CRYSTALS-DILITHIUM"
    }
  ],
  "service": [
    {
      "type": "KYCVerification",
      "serviceEndpoint": "https://kyc.novanet.org/verify"
    }
  ]
}
  • Users control their DID with cryptographic keys.
  • Identity verification occurs without exposing sensitive personal data.

2. DID Security with Post-Quantum Cryptography

DID security depends on Post-Quantum Digital Signatures (PQDS) to protect against quantum-based attacks.

2.1 Lattice-Based Cryptography for DID Security

NovaNet utilizes lattice-based cryptography such as CRYSTALS-DILITHIUM and FALCON to secure digital identity records.

Mathematical Model for Lattice-Based DID Signatures

$$\sigma = H_{LBC}(DID) \cdot S + e$$

Where:

  • $$H_{LBC}$$ = Lattice-based cryptographic hash function
  • $$DID$$ = Decentralized Identity Document
  • $$S$$ = Private signing key
  • $$e$$ = Error vector ensuring quantum resistance
  • Ensures DID signatures remain secure against quantum attacks.

3. DID and Verifiable Credentials (VCs)

A Verifiable Credential (VC) is a digitally signed proof of identity issued by trusted entities. Examples include:

  • Government IDs
  • University Degrees
  • Professional Certifications
  • KYC/AML Compliance Proofs

3.1 Example of a Verifiable Credential

A VC is issued and stored on NovaNet’s blockchain:

{
  "id": "vc:novanet:987654xyz",
  "issuer": "did:novanet:gov123",
  "credentialSubject": {
    "id": "did:novanet:abc456",
    "name": "John Doe",
    "dateOfBirth": "1995-05-20"
  },
  "proof": {
    "type": "QuantumResistantSignature",
    "signature": "LKJS8723JHS...",
    "algorithm": "FALCON-1024"
  }
}
  • Users can prove identity without exposing personal data.
  • Zero-Knowledge Proofs (ZKPs) allow private verification.

4. Zero-Knowledge Proofs (ZKPs) for DID Privacy

DID uses Post-Quantum Zero-Knowledge Proofs (PQ-ZKPs) to allow users to prove identity without revealing sensitive details.

  • No need to disclose full name, birth date, or ID number.
  • Only the required proof is shared, ensuring privacy.

Mathematical Model for PQ-ZKP Identity Verification

$$ZK_{proof} = H_q(DID, R_{challenge})$$

Where:

  • $$H_q$$ = Quantum-secure hash function
  • $$DID$$ = Decentralized Identity Document
  • $$R_{challenge}$$ = Random challenge for proof verification
  • Enables secure, private identity verification for KYC, voting, and DeFi applications.

5. DID Use Cases

  • Decentralized KYC (Know Your Customer) – Provides private identity verification for DeFi and financial institutions.

  • Cross-Border Digital Identity – Allows global users to verify credentials without relying on governments.

  • Private Voting Systems – Ensures secure and anonymous elections without identity fraud.

  • Access Control & Authentication – Enables passwordless login using blockchain-based identity.

  • Healthcare & Medical Records – Patients control access to their health data securely.

  • DID is a universal identity solution that ensures security, privacy, and control.

6. DID Implementation in NovaNet

NovaNet integrates DID into its Quantum Blockchain Infrastructure using:

  1. Layer-1 Blockchain: Immutable, quantum-resistant storage for identities.
  2. Post-Quantum Cryptography: Prevents quantum-based attacks on digital signatures.
  3. Zero-Knowledge Proofs: Ensures privacy and confidentiality in identity verification.
  • A fully decentralized and quantum-secure identity ecosystem.

7. Advantages of DID Over Traditional Identity Systems

Feature Centralized Identity Decentralized Identity (DID)
Data Ownership Controlled by governments & corporations Owned & managed by users
Security Vulnerable to hacking & leaks Quantum-resistant encryption
Privacy User data exposed to third parties Zero-Knowledge Proofs ensure confidentiality
Verification Requires third-party validation Blockchain-based, self-verifiable
Interoperability Limited to issuing authority Cross-chain & global compatibility
  • DID empowers users with full control over their identity.

8. Future of DID: Quantum-Resistant, AI-Powered Identity

NovaNet is pioneering the future of Decentralized Identity (DID) by integrating:

  • Quantum-Secure Digital Signatures – Post-quantum cryptography ensures future-proof identity.

  • AI-Driven Identity Fraud Detection – Detects anomalies in digital identity verification.

  • Interoperability with Web3 & Metaverse – Secure digital identity for decentralized applications.

  • DID is the foundation of secure, verifiable, and self-sovereign identity.

9. Related Links

πŸ”— NovaNet Whitepaper
πŸ”— Quantum-Resistant Digital Signatures (PQDS)
πŸ”— Post-Quantum Zero-Knowledge Proofs (PQ-ZKPs)
πŸ”— Self-Sovereign Identity (SSI) Framework

πŸ“’ Join the NovaNet Community!
πŸ’¬ Discord: Join Discussion
πŸ“’ Twitter: @NovaNet_Official
πŸ‘¨β€πŸ’» Telegram: Community Chat

🌍 DID is the future of decentralized identityβ€”secure, private, and quantum-resistant!