Account Abstraction (ERC-4337)
O que é Account Abstraction (ERC-4337)?
Account Abstraction (ERC-4337)An Ethereum standard that replaces externally-owned accounts with smart-contract wallets able to express arbitrary signing logic — social recovery, session keys, sponsored gas, multi-factor approval — without Layer 1 protocol changes.
ERC-4337 (Account Abstraction Using Alt Mempool), authored by Vitalik Buterin and others and deployed to Ethereum mainnet in March 2023, lets users hold funds and submit transactions through smart-contract wallets rather than externally-owned accounts (EOAs) — without requiring any consensus-layer change. Instead of an EOA signing a transaction with a single private key, an ERC-4337 'UserOperation' is constructed by the user's smart-contract wallet, bundled by a 'bundler' off-chain, and submitted to a global EntryPoint contract that executes the wallet's `validateUserOp` and then the user's intent. Because validation is fully programmable, wallets can implement social recovery (M-of-N guardians), session keys (a time- and contract-scoped key for game sessions), passkey-backed signatures via WebAuthn, sponsored gas payments by paymasters, and intent-based DSLs. Major wallet vendors (Safe, Argent, Biconomy, ZeroDev, Coinbase Smart Wallet) ship 4337 stacks; ERC-7702 (2024) adds a complementary EOA→smart-contract delegation mechanism. From a security perspective, AA dramatically changes the threat model: phishing now also targets `executeBatch` calldata, session-key abuse, and paymaster-griefing rather than just `permit` signatures.
● Exemplos
- 01
A new wallet uses ERC-4337 to give users WebAuthn passkey signing plus a 7-of-12 social-recovery guardian set, eliminating the seed-phrase paradigm.
- 02
A Web3 game grants the user a 24-hour session key scoped to its game contract; the user signs in-game moves without confirming each transaction in their main wallet.
● Perguntas frequentes
O que é Account Abstraction (ERC-4337)?
An Ethereum standard that replaces externally-owned accounts with smart-contract wallets able to express arbitrary signing logic — social recovery, session keys, sponsored gas, multi-factor approval — without Layer 1 protocol changes. Pertence à categoria Web3 e blockchain da cibersegurança.
O que significa Account Abstraction (ERC-4337)?
An Ethereum standard that replaces externally-owned accounts with smart-contract wallets able to express arbitrary signing logic — social recovery, session keys, sponsored gas, multi-factor approval — without Layer 1 protocol changes.
Como funciona Account Abstraction (ERC-4337)?
ERC-4337 (Account Abstraction Using Alt Mempool), authored by Vitalik Buterin and others and deployed to Ethereum mainnet in March 2023, lets users hold funds and submit transactions through smart-contract wallets rather than externally-owned accounts (EOAs) — without requiring any consensus-layer change. Instead of an EOA signing a transaction with a single private key, an ERC-4337 'UserOperation' is constructed by the user's smart-contract wallet, bundled by a 'bundler' off-chain, and submitted to a global EntryPoint contract that executes the wallet's `validateUserOp` and then the user's intent. Because validation is fully programmable, wallets can implement social recovery (M-of-N guardians), session keys (a time- and contract-scoped key for game sessions), passkey-backed signatures via WebAuthn, sponsored gas payments by paymasters, and intent-based DSLs. Major wallet vendors (Safe, Argent, Biconomy, ZeroDev, Coinbase Smart Wallet) ship 4337 stacks; ERC-7702 (2024) adds a complementary EOA→smart-contract delegation mechanism. From a security perspective, AA dramatically changes the threat model: phishing now also targets `executeBatch` calldata, session-key abuse, and paymaster-griefing rather than just `permit` signatures.
Como se defender contra Account Abstraction (ERC-4337)?
As defesas contra Account Abstraction (ERC-4337) costumam combinar controles técnicos e práticas operacionais, conforme detalhado na definição acima.
Quais são outros nomes para Account Abstraction (ERC-4337)?
Nomes alternativos comuns: ERC-4337, Account abstraction, Smart-contract wallet.
● Termos relacionados
- web3№ 1171
Seguranca de Contratos Inteligentes
Pratica de projetar, revisar e operar programas on-chain para que nao possam ser explorados para roubar fundos, congelar a logica ou violar regras de negocio.
- web3№ 1170
Auditoria de Contratos Inteligentes
Revisao de seguranca independente do codigo-fonte, da configuracao de deploy e do desenho economico de um contrato inteligente antes do lancamento ou de uma atualizacao.
- identity-access№ 888
Passkey
Credencial FIDO2/WebAuthn resistente a phishing: par de chaves assimétricas ligado ao dispositivo ou sincronizável que substitui as palavras-passe por um desafio-resposta criptográfico.
- web3№ 517
Carteira de Hardware
Dispositivo fisico dedicado que armazena as chaves privadas de criptomoedas num elemento seguro a prova de manipulacao e assina transacoes offline.
- web3№ 794
Carteira Multisig
Carteira de criptomoedas que exige m-de-n assinaturas de chaves independentes para autorizar uma transacao, eliminando o comprometimento de uma unica chave como falha fatal.
- web3№ 1155
Signature Phishing (Web3)
A Web3 phishing pattern that tricks a user into signing an EIP-712 or `personal_sign` message that authorizes the attacker to move tokens, transfer NFTs, or take wallet actions — without ever asking for a seed phrase.
● Veja também
- № 413EIP-712 Signing