> ## Documentation Index > Fetch the complete documentation index at: https://voltaire.tevm.sh/llms.txt > Use this file to discover all available pages before exploring further. # primitives/SignedData > Auto-generated API documentation [**@tevm/voltaire**](../index.mdx) *** [@tevm/voltaire](../index.mdx) / primitives/SignedData # primitives/SignedData ## Classes ### InvalidSignedDataFormatError Defined in: [src/primitives/SignedData/errors.ts:17](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L17) Error thrown when signed data has invalid format #### Extends * `Error` #### Constructors ##### Constructor > **new InvalidSignedDataFormatError**(`message`, `context?`): [`InvalidSignedDataFormatError`](#invalidsigneddataformaterror) Defined in: [src/primitives/SignedData/errors.ts:18](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L18) ###### Parameters ###### message `string` ###### context? `unknown` ###### Returns [`InvalidSignedDataFormatError`](#invalidsigneddataformaterror) ###### Overrides `Error.constructor` #### Properties ##### context? > `optional` **context**: `unknown` Defined in: [src/primitives/SignedData/errors.ts:24](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L24) *** ### InvalidSignedDataVersionError Defined in: [src/primitives/SignedData/errors.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L4) Error thrown when signed data has invalid version byte #### Extends * `Error` #### Constructors ##### Constructor > **new InvalidSignedDataVersionError**(`message`, `context?`): [`InvalidSignedDataVersionError`](#invalidsigneddataversionerror) Defined in: [src/primitives/SignedData/errors.ts:5](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L5) ###### Parameters ###### message `string` ###### context? `unknown` ###### Returns [`InvalidSignedDataVersionError`](#invalidsigneddataversionerror) ###### Overrides `Error.constructor` #### Properties ##### context? > `optional` **context**: `unknown` Defined in: [src/primitives/SignedData/errors.ts:11](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L11) *** ### SignatureVerificationError Defined in: [src/primitives/SignedData/errors.ts:30](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L30) Error thrown when signature verification fails #### Extends * `Error` #### Constructors ##### Constructor > **new SignatureVerificationError**(`message`, `context?`): [`SignatureVerificationError`](#signatureverificationerror) Defined in: [src/primitives/SignedData/errors.ts:31](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L31) ###### Parameters ###### message `string` ###### context? `unknown` ###### Returns [`SignatureVerificationError`](#signatureverificationerror) ###### Overrides `Error.constructor` #### Properties ##### context? > `optional` **context**: `unknown` Defined in: [src/primitives/SignedData/errors.ts:37](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/errors.ts#L37) ## Type Aliases ### SignedDataType > **SignedDataType** = `Uint8Array` & `object` Defined in: [src/primitives/SignedData/SignedDataType.ts:12](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/SignedDataType.ts#L12) EIP-191 signed data type Represents signed data according to EIP-191 specification. The version byte determines the signature format: * 0x00: Data with validator address * 0x01: Structured data (EIP-712) * 0x45: Personal message ("E" for Ethereum Signed Message) #### Type Declaration ##### \_\_tag > `readonly` **\_\_tag**: `"SignedData"` #### See [https://eips.ethereum.org/EIPS/eip-191](https://eips.ethereum.org/EIPS/eip-191) *** ### SignedDataVersion > **SignedDataVersion** = `0` | `1` | `69` Defined in: [src/primitives/SignedData/SignedDataType.ts:24](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/SignedDataType.ts#L24) EIP-191 version byte Determines the format and validation rules for signed data: * 0x00: Data with intended validator (contract address) * 0x01: Structured data following EIP-712 * 0x45: Personal message with "\x19Ethereum Signed Message:\n" prefix ## Variables ### EIP191\_PREFIX > `const` **EIP191\_PREFIX**: `25` = `0x19` Defined in: [src/primitives/SignedData/constants.js:15](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/constants.js#L15) EIP-191 prefix byte *** ### PERSONAL\_MESSAGE\_PREFIX > `const` **PERSONAL\_MESSAGE\_PREFIX**: "\u0019Ethereum Signed Message:\n" = `"\x19Ethereum Signed Message:\n"` Defined in: [src/primitives/SignedData/constants.js:18](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/constants.js#L18) Personal message prefix string *** ### VERSION\_DATA\_WITH\_VALIDATOR > `const` **VERSION\_DATA\_WITH\_VALIDATOR**: `0` = `0x00` Defined in: [src/primitives/SignedData/constants.js:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/constants.js#L6) Version 0x00: Data with validator *** ### VERSION\_PERSONAL\_MESSAGE > `const` **VERSION\_PERSONAL\_MESSAGE**: `69` = `0x45` Defined in: [src/primitives/SignedData/constants.js:12](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/constants.js#L12) Version 0x45: Personal message *** ### VERSION\_STRUCTURED\_DATA > `const` **VERSION\_STRUCTURED\_DATA**: `1` = `0x01` Defined in: [src/primitives/SignedData/constants.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/constants.js#L9) Version 0x01: Structured data (EIP-712) ## Functions ### from() > **from**(`version`, `versionData`, `data`): [`SignedDataType`](#signeddatatype) Defined in: [src/primitives/SignedData/from.js:35](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/from.js#L35) Create EIP-191 signed data from components Format: `0x19 ` * Version 0x00: `0x19 0x00 ` * Version 0x01: `0x19 0x01 ` * Version 0x45: `0x19 0x45 ` #### Parameters ##### version `number` Version byte (0x00, 0x01, or 0x45) ##### versionData `Uint8Array`\<`ArrayBufferLike`> Version-specific data (validator address or domain separator) ##### data `Uint8Array`\<`ArrayBufferLike`> Message data #### Returns [`SignedDataType`](#signeddatatype) EIP-191 formatted signed data #### Throws If version is not valid #### Example ```javascript theme={null} import { from } from './primitives/SignedData/from.js'; // Personal message (0x45) const signedData = from(0x45, new Uint8Array(), message); // Data with validator (0x00) const signedData = from(0x00, validatorAddress, data); ``` *** ### Hash() > **Hash**(`deps`): (`message`) => [`HashType`](../index/namespaces/HashType.mdx#hashtype) Defined in: [src/primitives/SignedData/hash.js:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/hash.js#L10) Factory: Create EIP-191 personal message hash function #### Parameters ##### deps Crypto dependencies ###### keccak256 (`data`) => `Uint8Array` Keccak256 hash function #### Returns > (`message`): [`HashType`](../index/namespaces/HashType.mdx#hashtype) ##### Parameters ###### message `string` | `Uint8Array`\<`ArrayBufferLike`> ##### Returns [`HashType`](../index/namespaces/HashType.mdx#hashtype) *** ### Verify() > **Verify**(`deps`): (`message`, `signature`, `expectedAddress`) => `boolean` Defined in: [src/primitives/SignedData/verify.js:12](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/SignedData/verify.js#L12) Factory: Create signature verification function for EIP-191 personal messages #### Parameters ##### deps Crypto dependencies ###### addressFromPublicKey (`x`, `y`) => [`AddressType`](Address.mdx#addresstype) Address derivation from public key ###### keccak256 (`data`) => `Uint8Array` Keccak256 hash function ###### recoverPublicKey (`signature`, `messageHash`) => `Uint8Array` secp256k1 public key recovery #### Returns > (`message`, `signature`, `expectedAddress`): `boolean` ##### Parameters ###### message `string` | `Uint8Array`\<`ArrayBufferLike`> ###### signature ###### r `Uint8Array` ###### s `Uint8Array` ###### v `number` ###### expectedAddress [`AddressType`](Address.mdx#addresstype) ##### Returns `boolean`