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Author SHA1 Message Date
Gulshan Yadav
af79e21a1b feat(crypto): add post-quantum algorithm negotiation protocol 
Implements a protocol for nodes to negotiate which post-quantum signature
algorithm to use for communication. Supports Dilithium3, SPHINCS+ (128s/192s/256s),
and FALCON (512/1024) with configurable preferences based on:
- Security level (NIST 1-5)
- Bandwidth constraints (signature size limits)
- Algorithm family preference (lattice vs hash-based)

Key features:
- AlgorithmCapabilities for advertising node capabilities
- AlgorithmNegotiator for selecting best common algorithm
- Scoring strategies (local/remote preference, average, min/max)
- Fallback algorithm selection (different family for resilience)
- Session parameters with renegotiation support
- Full test coverage (11 tests)

This completes Milestone 2 (Enhanced Quantum Cryptography) of Phase 13.
 2026-01-19 23:03:03 +05:30
Gulshan Yadav
9414ef5d99 feat(crypto): add SPHINCS+ and FALCON post-quantum algorithms 
Phase 13 Milestone 2 - Enhanced Quantum Cryptography:

SPHINCS+ (FIPS 205 / SLH-DSA):
- Hash-based signatures as backup if lattice schemes are compromised
- Three variants: 128s (~7.8KB), 192s (~16KB), 256s (~30KB)
- Relies only on hash function security (conservative choice)
- SphincsKeypair, SphincsPublicKey, SphincsSecretKey, SphincsSignature

FALCON (FIPS 206 / FN-DSA):
- Compact lattice signatures for bandwidth-constrained devices
- FALCON-512: 128-bit security, ~690 byte signatures
- FALCON-1024: 256-bit security, ~1,330 byte signatures
- ~79% smaller than Dilithium3 signatures
- Ideal for mobile wallets and L2 batch transactions

Algorithm Comparison:
| Algorithm | Security | Sig Size | Use Case |
|-----------|----------|----------|----------|
| Ed25519 | 128-bit | 64 B | Classical (fast) |
| Dilithium3 | 192-bit | 3,293 B | Default PQ |
| FALCON-512 | 128-bit | 690 B | Mobile/IoT |
| SPHINCS+-128s | 128-bit | 7,856 B | Backup |

All 40 unit tests + 5 doc tests passing.
 2026-01-19 09:52:16 +05:30
Gulshan Yadav
d917f1ed22 style: format all Rust code with cargo fmt 2026-01-08 05:22:24 +05:30
Gulshan Yadav
48949ebb3f Initial commit: Synor blockchain monorepo 
A complete blockchain implementation featuring:
- synord: Full node with GHOSTDAG consensus
- explorer-web: Modern React blockchain explorer with 3D DAG visualization
- CLI wallet and tools
- Smart contract SDK and example contracts (DEX, NFT, token)
- WASM crypto library for browser/mobile
 2026-01-08 05:22:17 +05:30