GitHub - luxfi/session: SessionVM - Post-quantum secure messaging VM for Lux blockchain

Post-quantum secure messaging VM for the Lux blockchain ecosystem.

Overview

SessionVM is a pluggable virtual machine that provides end-to-end encrypted, post-quantum secure private messaging. It can be integrated into any Lux-based chain to enable secure communication.

Features

Post-Quantum Security: ML-KEM-768 (FIPS 203) and ML-DSA-65 (FIPS 204)
Forward Secrecy: Fresh KEM encapsulation per message
Authenticated Encryption: XChaCha20-Poly1305 AEAD
Pluggable Architecture: Integrate into any Lux SDK chain
High Performance: Optimized for low-latency messaging

Installation

go get github.com/luxfi/session

Quick Start

import (
    "github.com/luxfi/session/crypto"
    "github.com/luxfi/session/vm"
)

// Generate post-quantum identity
identity, err := crypto.GenerateIdentity()
// identity.SessionID: "07abc123..." (66 chars)
// identity.KEMPublicKey: 1184 bytes (ML-KEM-768)
// identity.DSAPublicKey: 1952 bytes (ML-DSA-65)

// Encrypt to recipient
ciphertext, err := crypto.EncryptToRecipient(recipientKEMPublicKey, plaintext)

// Sign message
signature, err := crypto.Sign(identity.DSASecretKey, message)

// Verify signature
valid := crypto.Verify(identity.DSAPublicKey, message, signature)

Cryptographic Primitives

Algorithm	Purpose	Standard	Security Level
ML-KEM-768	Key Encapsulation	FIPS 203	NIST Level 3
ML-DSA-65	Digital Signatures	FIPS 204	NIST Level 3
XChaCha20-Poly1305	AEAD Encryption	RFC 8439	256-bit
Blake2b-256	Hashing	RFC 7693	256-bit

Session ID Format

Session IDs use a prefix system to identify the cryptographic suite:

07 - Post-quantum (ML-KEM-768 + ML-DSA-65)
05 - Legacy (X25519 + Ed25519)

Format: <prefix> + hex(Blake2b-256(KEM_pk || DSA_pk)) = 66 characters

Architecture

┌─────────────────────────────────────────────────────────┐
│                    Application Layer                     │
│              (Pars, Messaging Apps, DAOs)               │
└───────────────────────┬─────────────────────────────────┘
                        │
┌───────────────────────▼─────────────────────────────────┐
│                github.com/luxfi/session                  │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────┐  │
│  │   vm/vm.go  │  │ vm/service  │  │ crypto/identity │  │
│  │   SessionVM │  │    RPC      │  │  PQ Crypto Ops  │  │
│  └─────────────┘  └─────────────┘  └────────┬────────┘  │
└─────────────────────────────────────────────┼───────────┘
                                              │
┌─────────────────────────────────────────────▼───────────┐
│                github.com/luxfi/crypto                   │
│  ┌────────────┐  ┌────────────┐  ┌──────────────────┐   │
│  │   mlkem/   │  │   mldsa/   │  │   blake2b/       │   │
│  │ ML-KEM-768 │  │ ML-DSA-65  │  │   XChaCha20      │   │
│  └────────────┘  └────────────┘  └──────────────────┘   │
│        (cloudflare/circl FIPS implementations)          │
└─────────────────────────────────────────────────────────┘

Related Repositories

luxcpp/session - C++ storage server with GPU acceleration
luxfi/crypto - Cryptographic primitives (ML-KEM, ML-DSA, Blake2b)
parsdao/node - Pars blockchain node with SessionVM integration

Benchmarks

On Apple M1 Max:

BenchmarkGenerateIdentity:         268μs/op
BenchmarkEncapsulateDecapsulate:   226μs/op
BenchmarkSignVerify:               1.08ms/op
BenchmarkCreateSession:            3.8μs/op
BenchmarkSendMessage:              1.9μs/op
BenchmarkGetSession:               16ns/op

Testing

# Run all tests with race detection
go test -v -race ./...

# Run benchmarks
go test -bench=. -benchmem ./...

Configuration

{
  "sessionTTL": 86400,
  "maxMessages": 10000,
  "maxChannels": 1000,
  "retentionDays": 30,
  "idPrefix": "07"
}

Documentation

LLM.md - Detailed architecture documentation
API Reference