Ethereum Hardware Wallet Integration Advances with ZKNox

Nicolas Bacca, founder of the Ethereum Foundation-supported research institution ZKNox and former Ledger co-founder and CTO, discussed advancements in hardware wallet integration with Ethereum at the EthCC[9] conference. According to Foresight News, Bacca highlighted the challenges hardware wallets face in fully supporting advanced features brought by account abstraction due to the Ethereum Virtual Machine's (EVM) lack of native support for certain efficient cryptographic signatures and complex verification logic. ZKNox has significantly reduced the on-chain verification cost of the quantum-resistant Falcon signature scheme from 24 million Gas to 2 million Gas, enhancing efficiency by approximately 12 times. This improvement brings the transaction cost of post-quantum secure signatures generated by hardware wallets closer to that of regular transactions. Additionally, ZKNox is developing a standardized SDK to enable seamless compatibility of hardware wallets with account abstraction features such as social recovery, multi-signature, and complex permission management. The company is also exploring the generation of zero-knowledge proofs on hardware devices to verify signature legitimacy on-chain without exposing sensitive information. Bacca stated that ZKNox aims to establish open-source hardware security standards, positioning hardware wallets as universal quantum-resistant digital identity signers across Layer 2 and application scenarios.