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EIP-712 Typed structured data hashing and signing

FinalInterfacecreated 2017-09-1250 later proposals build on itrequires EIP-155, ERC-191

A procedure for hashing and signing of typed structured data as opposed to just bytestrings.

Authors: Remco Bloemen (@Recmo), Leonid Logvinov (@LogvinovLeon), Jacob Evans (@dekz)

Depends on (2)

Proposals this one names in its requires field.

EIP-155Simple replay attack protectionERC-191Signed Data Standard

Built on by (50)

Later proposals that name this one in their requires field.

ERC-1812Ethereum Verifiable ClaimsERC-2612Permit Extension for EIP-20 Signed ApprovalsERC-2770Meta-Transactions Forwarder ContractERC-3009Transfer With AuthorizationERC-3440ERC-721 Editions StandardERC-4337Account Abstraction Using Alt MempoolERC-4494Permit for ERC-721 NFTsERC-4973Account-bound TokensERC-5267Retrieval of EIP-712 domainERC-5375NFT Author Information and ConsentERC-5453Endorsement - Permit for Any FunctionsERC-5539Revocation List RegistryERC-5559Cross Chain Write Deferral ProtocolERC-5727Semi-Fungible Soulbound TokenERC-5805Voting with delegationERC-5902Smart Contract Event HooksERC-6384Human-readable offline signaturesERC-6538Stealth Meta-Address RegistryERC-6865On-Chain EIP-712 VisualizationERC-7015NFT Creator AttributionERC-7272Ethereum Access TokenERC-7498NFT RedeemablesERC-7506Trusted Hint RegistryERC-7512Onchain Representation for AuditsERC-7604ERC-1155 Permit ApprovalsEIP-7713Box type for EIP-712 messagesERC-7730Structured Data Clear Signing FormatERC-7739Readable Typed Signatures for Smart AccountsERC-7741Authorize OperatorEIP-7749Add wallet_signIntendedValidatorData methodERC-7758Transfer With AuthorizationERC-7803EIP-712 Extensions for Account AbstractionERC-7871Wallet Signing APIERC-7920Composite EIP-712 SignaturesERC-7962Key Hash Based TokensERC-7964Crosschain EIP-712 SignaturesERC-8001Agent Coordination FrameworkERC-8004Trustless AgentsERC-8034Referable NFT RoyaltiesERC-8074Self-Describing Bytes via EIP-712 SelectorsERC-8092Associated AccountsERC-8107ENS Trust Registry for Agent CoordinationERC-8126AI Agent VerificationEIP-8130Keystore AccountsERC-8187Token PullerERC-8196AI Agent Authenticated WalletERC-8226Regulated Agent MandateERC-8257Agent Tool RegistryERC-8320Regulated Asset ClaimERC-8354Confidential Agent Policy Verdicts

What the specification covers

AbstractMotivationSpecificationDefinition of typed structured data 𝕊Definition of hashStructDefinition of encodeTypeDefinition of encodeDataDefinition of domainSeparatorSpecification of the eth_signTypedData JSON RPCeth_signTypedDataParametersReturnsExamplepersonal_signTypedDataSpecification of the Web3 APIweb3.eth.signTypedDataParametersReturnsExampleweb3.eth.personal.signTypedDataRationaleRationale for typeHashRationale for encodeDataRationale for domainSeparatorBackwards CompatibilityTest CasesSecurity ConsiderationsReplay attacksFrontrunning attacksCopyright

This proposal declares no Solidity interface, so there is nothing to compute. It may be a core protocol change, a meta proposal, or written in prose only.

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