MetaMUI Classical Suite

Blockchain-optimized algorithms for current deployment

The MetaMUI Classical Suite represents our current recommended algorithms, extending DJB’s foundational work with blockchain-specific optimizations.

Core Algorithms

AEAD: ChaCha20-Poly1305

Pure DJB design representing the pinnacle of AEAD performance

  • Design Origin: Direct implementation of Daniel J. Bernstein’s AEAD construction
  • Performance: ~1,200 MB/s software performance without hardware dependencies
  • Use Cases: TLS 1.3, mobile applications, universal deployment
  • Security: 256-bit keys provide ~128-bit post-quantum security
  • Advantage: Software-optimized for consistent performance across all platforms

Key Exchange: X25519

DJB ecosystem consistency and software optimization

  • Design Origin: Bernstein’s Curve25519 Diffie-Hellman
  • Performance: 2-3x faster than traditional ECDH in software
  • Use Cases: Key agreement, forward secrecy protocols
  • Security: 128-bit classical, ~64-bit post-quantum security
  • Advantage: Constant-time implementation, immunity to many side-channel attacks

Signatures: Sr25519

Blockchain batch verification extension of DJB principles

  • Design Origin: Extension of Ed25519 with Ristretto group and batch verification
  • Performance: Exceptional batch verification capabilities for blockchain consensus
  • Use Cases: Blockchain transactions, batch signature verification, Substrate-based networks
  • Security: 128-bit classical security level
  • Advantage: Optimized for blockchain infrastructure throughput

Hashing: Blake3

Parallel performance champion aligned with DJB philosophy

  • Design Origin: Evolution of Blake2 with extreme parallelization
  • Performance: 2-4x faster than SHA-256 on modern multi-core CPUs
  • Use Cases: Merkle trees, content addressing, high-throughput hashing
  • Security: 256-bit output, collision-resistant
  • Advantage: Parallel processing and streaming capabilities

Performance Characteristics

Throughput Comparison (MB/s on modern CPU)

Algorithm MetaMUI Classical Traditional Alternative Performance Gain
AEAD ChaCha20-Poly1305: ~1,200 AES-GCM: ~800 (software) 1.5x software
Key Exchange X25519: ~50k ops/sec ECDH P-256: ~20k ops/sec 2.5x operations
Signatures Sr25519: ~15k batch/sec Ed25519: ~8k individual/sec ~2x throughput
Hashing Blake3: ~2,000 SHA-256: ~800 2.5x parallel

Memory Efficiency

Algorithm State Size Memory Advantage
ChaCha20-Poly1305 ~200 bytes Minimal state, cache-friendly
X25519 ~64 bytes Compact key representation
Sr25519 ~64 bytes Same as Ed25519, batch benefits
Blake3 ~54 bytes Smaller than SHA-256 state

Blockchain Optimization Features

Transaction Processing

  • Sr25519: Batch verification reduces validation time by ~60%
  • Blake3: Parallel Merkle tree construction for faster block building
  • ChaCha20-Poly1305: Efficient encrypted communication between nodes

Mobile Wallet Performance

  • X25519: Fast key agreement for wallet-to-wallet communication
  • ChaCha20-Poly1305: Battery-efficient encryption for mobile devices
  • Blake3: Quick address generation and transaction hashing

Network Protocol Efficiency

  • All algorithms: Software-optimized for consistent performance across diverse hardware
  • Reduced dependencies: No hardware acceleration requirements
  • Universal deployment: Same performance characteristics across platforms

Integration Examples

Basic Usage Pattern

from metamui_crypto import ClassicalSuite

# Initialize the classical suite
suite = ClassicalSuite()

# Key exchange
shared_secret = suite.key_exchange.x25519(private_key, public_key)

# Message encryption
ciphertext, tag = suite.aead.chacha20_poly1305_encrypt(
    plaintext, nonce, shared_secret
)

# Digital signature
signature = suite.signatures.sr25519_sign(message, signing_key)

# Hashing
hash_value = suite.hashing.blake3(data)

Blockchain Transaction Example

# High-performance transaction processing
signatures = [sr25519_sign(tx, key) for tx, key in transactions]
valid = suite.signatures.sr25519_batch_verify(signatures, transactions, public_keys)

# Parallel block hash computation
block_hash = suite.hashing.blake3_parallel(block_data, num_threads=8)

Security Properties

Classical Security Levels

  • ChaCha20-Poly1305: 256-bit security against classical attacks
  • X25519: 128-bit security level (equivalent to 3072-bit RSA)
  • Sr25519: 128-bit security level with batch verification integrity
  • Blake3: 256-bit collision resistance, 128-bit preimage resistance

Side-Channel Resistance

  • Constant-time implementations: All algorithms resist timing attacks
  • Memory access patterns: Uniform memory access to prevent cache attacks
  • Branch prediction: No secret-dependent branching in critical paths

Use Case Recommendations

High-Performance Blockchain Networks

Primary Choice: Full classical suite

  • Sr25519 for consensus signatures
  • Blake3 for block and transaction hashing
  • X25519 for peer-to-peer key exchange
  • ChaCha20-Poly1305 for network encryption

Mobile Wallet Applications

Primary Choice: Classical suite with battery optimization

  • ChaCha20-Poly1305 for message encryption (battery efficient)
  • X25519 for key derivation (fast on mobile CPUs)
  • Blake3 for address generation (parallel utilization)
  • Sr25519 for transaction signing (when batch verification available)

Enterprise Integration

Primary Choice: Classical suite for gradual adoption

  • Proven algorithms with extensive analysis
  • Software performance without hardware requirements
  • Clear migration path to post-quantum when needed

Migration Timeline

Current (2024-2025)

  • Full classical suite deployment for maximum performance
  • Hybrid testing with post-quantum algorithms in development environments
  • Infrastructure preparation for future PQC migration

Transition (2025-2030)

  • Gradual introduction of post-quantum algorithms alongside classical
  • Hybrid mode operations maintaining backward compatibility
  • Performance monitoring to optimize transition timing

Post-Quantum (2030+)

  • Migration to PQC suite as quantum computing threat materializes
  • Maintained API compatibility ensuring smooth application updates
  • Performance optimization of post-quantum implementations