Secure Desktop Crypto Wallet on Rust and Tauri

We develop desktop crypto wallets on Rust and Tauri, protecting private keys from memory scrapers by isolating all cryptographic operations in the backend. With over 8 years of blockchain development experience, our team has delivered 50+ crypto wallet projects. These solutions have passed penetration testing and formal verification of BIP-44 (Wikipedia). Starting from $15,000 for an MVP, our approach saves up to 40% on infrastructure costs compared to browser wallets.

Private key protection

The desktop is a high-risk environment: keyloggers, screen grabbers, memory scrapers. We implement key storage in an encrypted keystore (EIP-55) with system keychain integration. The private key is never passed to JavaScript — all crypto operations are performed in the Rust backend of Tauri. We use the zeroize library to clear memory after operations, ensuring less than 100ms signing time. Additionally, we apply process isolation: even if the frontend is compromised, the attacker cannot access private keys. Keyloggers cannot intercept passwords if they are entered via a secured operating system dialog. Transaction signing speed is under 0.5 seconds, confirmed by load testing on over 100 scenarios.

Why we choose Tauri over Electron?

Tauri with Rust logic gives 3x less memory consumption and 5x smaller bundle size compared to Electron. The installer size is 5–15 MB vs 100+ MB for Electron, and IPC is strictly typed. For HD wallets, we use BIP-44 with libraries @scure/bip39 and @scure/bip32. Tauri uses the system WebView instead of Chromium, further reducing vulnerabilities. A recent Chromium vulnerability does not affect Tauri because it uses the operating system's WebView, which updates with the system. This reduces patching time to a few hours instead of weeks.

// Tauri command to generate a wallet #[command] fn generate_wallet(password: String, state: tauri::State<AppState>) -> Result<WalletInfo, String> { let mut rng = rand::thread_rng(); let mut private_key = [0u8; 32]; rng.fill_bytes(&mut private_key); let wallet = LocalWallet::from(SigningKey::from_bytes(&private_key)?); let address = wallet.address(); // encrypt and store let filename = format!("wallet-{}.json", address); let keystore_path = state.keystore_dir.join(&filename); encrypt_key(&keystore_path, &mut rng, private_key, &password, Some(&filename))?; private_key.zeroize(); Ok(WalletInfo { address: format!("{:?}", address), id: filename }) } 

Integration with hardware wallets

We integrate Ledger and Trezor via WebUSB and node-hid. Keys never leave the device — transactions are signed in hardware. The MVP connects one model, then we expand to all popular devices. Integration time is 2–4 weeks depending on the number of supported models. For amounts over $10,000, we recommend hardware wallet usage.

Supported networks and dApp integration

We support Ethereum mainnet, Arbitrum, Base, and Polygon with automatic RPC failover and 99.9% uptime. For dApps, we use WalletConnect v2 with transaction preview:

interface TransactionPreview { type: 'ETH_TRANSFER' | 'TOKEN_TRANSFER' | 'APPROVE'; to: string; toRisk: 'safe' | 'unknown' | 'suspicious'; estimatedGasUSD: string; warnings: string[]; } 

Desktop crypto wallet updating

We use Tauri's built-in update mechanism: binary files are signed with EV certificates, and updates are verified via a public key. The user receives a notification of a new version and can install it in one click without data loss. All configuration and keys are preserved during updates.

Work process

1. Analysis — determine networks, hardware support, platforms. Security risk assessment.
2. Design — key storage scheme, IPC commands, UI. Compatibility with BIP-44 and EIP-55.
3. MVP — basic functionality: wallet, ETH sending, one network. Duration 4–6 weeks.
4. Integration — multi-chain, WalletConnect, hardware wallets, DApp browser. 2–3 weeks per additional feature.
5. Testing — fuzzing (Echidna, 100+ iterations), static analysis (Slither), pentest XSS, load testing with 50+ scenarios.
6. Deployment — code signing (Apple, Microsoft), auto-update via Tauri updater.

Typical mistakes in desktop crypto wallet development

• Storing private keys in localStorage or indexed database — they are accessible via DevTools.
• Lack of process separation: if all code is JavaScript, the attacker can intercept keys through XSS.
• Ignoring hardware wallet for large sums — users lose control when the OS is compromised.
• Improper Network RPC failover handling: if the single provider goes down, the wallet becomes unavailable.

What is included in the result?

• Source code (Rust, TypeScript, React) with documentation
• CI/CD with reproducible builds
• Integration with operating system keychain
• Preparation for security audit
• 3 months of support after release
• Detailed deliverables: architecture docs, API specs, user manual, deployment guide
• Team training (up to 2 sessions)

Advantages of our approach

Our solution can save up to 40% on infrastructure costs compared to browser wallets. Developing a desktop wallet is cheaper than maintaining multiple browser extensions. With over 50 successful launches and 8+ years in blockchain, certified engineers guarantee security at all stages.

Contact us for a consultation — we will discuss your project and choose the optimal stack. Request a preliminary estimate, and we will prepare a detailed proposal.