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Decentralized Identity (DID) & Self-Sovereign Identity - Coggle Diagram
Decentralized Identity (DID) & Self-Sovereign Identity
Problems with Traditional Identity
Centralized databases
Single point of failure
Data breaches
Identity theft
Lack of user control
Decentralized Identity (DID)
User-owned identity
No central authority
Decentralized identifiers
Self-Sovereign Identity (SSI)
Full user control
User-managed credentials
Consent-based data sharing
Core Components
Decentralized Identifiers
Globally unique identifiers
Cryptographically verifiable
Verifiable Credentials
Digitally signed claims
Issued by trusted authorities
Digital Wallets
Stores credentials
Manages private keys
Blockchain / Distributed Ledger
Stores DID documents
Ensures immutability
Cryptographic Algorithms
Public Key Algorithms
RSA
Elliptic Curve Cryptography (ECC)
Digital Signature Algorithms
ECDSA
EdDSA
Hash Algorithms
SHA-256
Keccak
Zero-Knowledge Proof Algorithms
zk-SNARKs
zk-STARKs
Security Goals
Confidentiality
Protect identity data
Integrity
Prevent data tampering
Authentication
Verify identity ownership
Authorization
Controlled data access
Non-repudiation
Proof of actions
Authentication Mechanism
Passwordless login
Cryptographic proof of identity
Selective disclosure
Security Threats
Private key theft
Phishing attacks
Malicious credential issuers
Sybil attacks
Replay attacks
Implementation Challenges
Secure key management
User-friendly wallet design
Scalability issues
Interoperability between platforms
Regulatory compliance
Real-World Applications
Digital KYC verification
E-governance services
Healthcare identity systems
Educational certificates
Blockchain and Web3 platforms
Advantages
User-centric identity control
Enhanced privacy
Reduced identity fraud
No centralized data storage