parseErc6492Signature

Parses an ERC-6492 formatted signature

parseErc6492Signature

Parses a hex-formatted ERC-6492 flavored signature. If the signature is not in ERC-6492 format, the underlying (original) signature is returned.

Import

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

Usage

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

parsed, err := signature.ParseErc6492Signature(
  "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",
)
if err != nil {
  log.Fatal(err)
}

fmt.Printf("Factory Address: %s
", parsed.Address)
// Factory Address: 0xCAFEBABECAFEBABECAFEBABECAFEBABECAFEBABE

fmt.Printf("Factory Data: %s
", parsed.Data)
// Factory Data: 0xdeadbeef

fmt.Printf("Original Signature: %s
", parsed.Signature)
// Original Signature: 0xa461f509887bd19e312c0c58467ce8ff8e300d3c1a90b608a760c5b80318eaf15fe57c96f9175d6cd4daad4663763baa7e78836e067d0163e9a2ccf2ff753f5b1b

Returns

Type: (*signature.Erc6492Signature, error)

A parsed ERC-6492 signature containing:

Address: The ERC-4337 Account Factory address
Data: The calldata to pass to deploy account (if not deployed)
Signature: The original signature

If the signature is not ERC-6492 format, returns the original signature in the Signature field.

Parameters

signature (required)

Type: string

The ERC-6492 formatted signature string. Must end with ERC-6492 magic bytes if it's an ERC-6492 signature.

parsed, _ := signature.ParseErc6492Signature(
  "0x000000000000000000000000cafebabecafebabecafebabecafebabecafebabe...6492649264926492649264926492649264926492649264926492649264926492",
)

Erc6492Signature Structure

The parsed ERC-6492 signature contains:

Address: The ERC-4337 Account Factory address (hex string)
Data: The calldata to pass to deploy account (hex string)
Signature: The original signature (hex string)

Notes

ERC-6492 signatures are used for counterfactual contract account verification
The signature format is: abi.encode(factoryAddress, factoryData, originalSignature) + magicBytes
If the signature doesn't end with magic bytes, it's treated as a regular signature and returned as-is
This allows verification of signatures from accounts that haven't been deployed yet