recoverTypedDataAddress

Recovers the Ethereum address that signed typed data

recoverTypedDataAddress

Recovers the Ethereum address that signed typed data from the typed data and signature.

Import

import "github.com/ChefBingbong/viem-go/utils/signature"
import "math/big"

Usage

import "github.com/ChefBingbong/viem-go/utils/signature"
import "math/big"

typedData := signature.TypedDataDefinition{
  Domain: signature.TypedDataDomain{
      Name:    "My App",
      Version: "1",
      ChainId: big.NewInt(1),
  },
  Types: map[string][]signature.TypedDataField{
      "Message": {
          {Name: "content", Type: "string"},
      },
  },
  PrimaryType: "Message",
  Message: map[string]any{
      "content": "Hello!",
  },
}

address, err := signature.RecoverTypedDataAddress(
  typedData,
  "0x6e100a352ec6ad1b70802290e18aeed190704973570f3b8ed42cb9808e2ea6bf4a90a229a244495b41890987806fcbd2d5d23fc0dbe5f5256c2613c039d76db81c",
)
if err != nil {
  log.Fatal(err)
}
fmt.Printf("Signer: %s
", address)

Returns

Type: (string, error)

The Ethereum address that signed the typed data, as a hex string with 0x prefix.

Parameters

typedData (required)

Type: signature.TypedDataDefinition

The typed data definition that was signed. Must match exactly what was signed.

typedData := signature.TypedDataDefinition{
  Domain: signature.TypedDataDomain{
      Name:    "My App",
      Version: "1",
      ChainId: big.NewInt(1),
  },
  Types: map[string][]signature.TypedDataField{
      "Message": {
          {Name: "content", Type: "string"},
      },
  },
  PrimaryType: "Message",
  Message: map[string]any{
      "content": "Hello!",
  },
}

address, _ := signature.RecoverTypedDataAddress(typedData, sig)

signature (required)

Type: any (supports string, []byte, or *signature.Signature)

The signature that was generated by signing the typed data.

address, _ := signature.RecoverTypedDataAddress(
  typedData,
  "0x6e100a352ec6ad1b70802290e18aeed190704973570f3b8ed42cb9808e2ea6bf4a90a229a244495b41890987806fcbd2d5d23fc0dbe5f5256c2613c039d76db81c",
)

Implementation

This function:

Hashes the typed data using HashTypedData (EIP-712 format)
Recovers the public key from the hash and signature
Derives the Ethereum address from the public key
Returns the address as a hex string