qweb3.rs

Quantova Post-Quantum Web3 Client — Rust SDK. Connect to a Quantova node, manage post-quantum accounts, sign and broadcast transactions, and interact with QVM smart contracts from Rust. The Rust counterpart of qweb3.js and qweb3.py.

Quantum security

Quantova is a post-quantum Layer-1. Accounts use NIST post-quantum signatures (Falcon-512, SPHINCS+ SHAKE-128s, CRYSTALS-Dilithium2/ML-DSA-44) with SHA3-256 — no ECDSA/secp256k1 — resistant to quantum attacks. Addresses are Bech32m Q1…; the chain speaks q_* JSON-RPC.

Cross-SDK compatibility (byte-for-byte)

Keys are derived deterministically from the mnemonic using the exact same cores as qweb3.js and the Quantova node — pure Rust, no native liboqs:

Scheme	Crate	Seeding
Falcon-512	fn-dsa	ChaCha20Rng::from_seed(seed)
Dilithium2	fips204	ml_dsa_44::keygen_from_seed(seed)
SPHINCS+	fips205	blake2_256(SCALE(seed,label))[..16] components

The mnemonic → 32-byte seed step is the substrate mini-secret (PBKDF2-HMAC-SHA512(BIP-39 entropy, "mnemonic", 2048)[..32]). The result: the same phrase yields the same Q1… address and valid signatures in qweb3.js, qweb3.py and qweb3.rs. Verified against qweb3.js reference vectors in the test suite, e.g. "test test … junk" → Falcon Q1GREP2A5A6DX9UFFPWW72PCZ4X429LMQMV6ZW35.

Add to your project

[dependencies]
qweb3 = "1.1"

Quick start

use qweb3::wallet::{Wallet, Scheme};

// Generate a new account (returns the wallet + its 24-word mnemonic).
let (wallet, mnemonic) = Wallet::create(Scheme::Falcon)?;
println!("address: {}", wallet.address());        // Q1…
println!("mnemonic: {mnemonic}");

// Or restore from a mnemonic — same address as qweb3.js / qweb3.py.
let wallet = Wallet::import_mnemonic(&mnemonic, Scheme::Falcon)?;

// Sign and verify (post-quantum).
let sig = wallet.sign(b"hello quantova")?;
assert!(wallet.verify(b"hello quantova", &sig));
# Ok::<(), qweb3::error::Error>(())

Post-quantum keygen and signing are always available (pure Rust, no system libraries). Wallet, Scheme, address derivation, ABI, QNS, fees and RPC need no extra features.

Resources

• 🌐 https://quantova.org · 🔎 https://qvmscan.io · 💻 https://github.com/Quantova/qweb3.rs

License

Apache-2.0 © Quantova