Cryptographic Schemes
| Scheme | Type | Security | Purpose |
|---|---|---|---|
| Blake3-512 | Hash | 256-bit PQ | Addresses, state roots, tx hashes |
| SHA-512 | Hash | 256-bit Classical | PoW mining algorithm |
| Secp256k1 | ECDSA | 128-bit Classical | Bitcoin-compatible signatures |
| Secp512r1 | ECDSA | 256-bit Classical | High-security signatures |
| SPHINCS+ | Hash-based PQ | 256-bit PQ | Post-quantum signatures |
| Dilithium3 | Lattice PQ | 192-bit PQ | Post-quantum signatures |
| Kyber1024 | KEM PQ | 256-bit PQ | Post-quantum key encapsulation |
| XChaCha20-Poly1305 | AEAD | 256-bit | Authenticated encryption |
| Argon2id | KDF | Memory-hard | Key derivation (GPU-resistant) |
Quantum Resistance Strategy
512-bit Security Model
- Address Format: 512-bit Blake3 hash (quantum-resistant)
- Transaction Hash: 512-bit Blake3 hash (quantum-resistant)
- State Root: 512-bit Blake3 hash (quantum-resistant)
- Signature Scheme: Hybrid classical + post-quantum for transition
- Post-Quantum Algorithms: SPHINCS+, Dilithium3, Kyber1024 (NIST PQC standards)
Key Management
HD Wallets
- Standard: BIP32/BIP39 extended to 512-bit derivation
- Mnemonic: 12, 15, 18, 21, or 24 words
- Entropy: 512-bit for maximum security
- Derivation: m/44'/0'/0'/0/n (standard path)
Key Encryption
- Encryption: XChaCha20-Poly1305 (256-bit)
- Key Encapsulation: Kyber1024 (post-quantum)
- Key Derivation: Argon2id (memory-hard, GPU-resistant)
- Multi-Signature: Support for m-of-n signatures
Security Analysis
Classical Security
- ECDSA (Secp256k1): 128-bit security (Bitcoin-compatible)
- ECDSA (Secp512r1): 256-bit security (high-security)
- SHA-512: 256-bit security (PoW mining)
Post-Quantum Security
- SPHINCS+: 256-bit security (hash-based, stateless)
- Dilithium3: 192-bit security (lattice-based, fast)
- Kyber1024: 256-bit security (lattice-based KEM)
Implementation Status
- ✅ Blake3-512: Production-ready
- ✅ SHA-512: Production-ready
- ✅ Secp256k1: Production-ready
- ✅ Secp512r1: Production-ready
- ✅ SPHINCS+: Production-ready
- ✅ Dilithium3: Production-ready
- ✅ Kyber1024: Production-ready
- ✅ XChaCha20-Poly1305: Production-ready
- ✅ Argon2id: Production-ready
Learn more about SilverBitcoin's security: