README.md

SigVerify

This project is used to verify signatures under various specifications of ethereum. In addition to the standard elliptic curve signature, it also supports the signature of wallets such as ledger and argent.

It supports:

1. Standard elliptic curve signature verification. (eth_sign).
2. EIP712 typed data verification. (eth_signTypedData_v*).
3. ERC1271 Smart contract wallet signature verification (isValidSignature).
4. Some hardware wallets signature verification such as ledger.

Examples

1. Standard elliptic curve signature verification

package main

import (
	"fmt"

	ethcommon "github.com/ethereum/go-ethereum/common"
	"github.com/storyicon/sigverify"
)

func main() {
	valid, err := sigverify.VerifyEllipticCurveHexSignatureEx(
		ethcommon.HexToAddress("0xb052C02346F80cF6ae4DF52c10FABD3e0aD24d81"),
		[]byte("hello"),
		"0x0498c6564863c78e663848b963fde1ea1d860d5d882d2abdb707d1e9179ff80630a4a71705da534a562c08cb64a546c6132de26eb77a44f086832cbc1dbe01f71b",
	)
	fmt.Println(valid, err) // true <nil>
}

2. EIP-712 Typed data verification

package main

import (
	"encoding/json"
	"fmt"

	ethcommon "github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/signer/core/apitypes"
	"github.com/storyicon/sigverify"
)

const ExampleTypedData = `
{
    "types": {
        "EIP712Domain": [
            {
                "name": "name",
                "type": "string"
            },
            {
                "name": "chainId",
                "type": "uint256"
            }
        ],
        "RandomAmbireTypeStruct": [
            {
                "name": "identity",
                "type": "address"
            },
            {
                "name": "rewards",
                "type": "uint256"
            }
        ]
    },
    "domain": {
        "name": "Ambire Typed test message",
        "chainId": "1"
    },
    "primaryType": "RandomAmbireTypeStruct",
    "message": {
        "identity": "0x0000000000000000000000000000000000000000",
        "rewards": 0
    }
}
`

func main() {
	var typedData apitypes.TypedData
	if err := json.Unmarshal([]byte(ExampleTypedData), &typedData); err != nil {
		panic(err)
	}
	valid, err := sigverify.VerifyTypedDataHexSignatureEx(
		ethcommon.HexToAddress("0xaC39b311DCEb2A4b2f5d8461c1cdaF756F4F7Ae9"),
		typedData,
		"0xee0d9f9e63fa7183bea2ca2e614cf539464a4c120c8dfc1d5ccc367f242a2c5939d7f59ec2ab413b8a9047de5de2f1e5e97da4eba2ef0d6a89136464f992dae11c",
	)
	fmt.Println(valid, err) // true <nil>
}

3. EIP1271 Smart contract wallet signature verification

package main

import (
	"context"
	"fmt"

	ethcommon "github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/ethclient"
	"github.com/storyicon/sigverify"
)

func main() {
	client, err := ethclient.Dial("https://polygon-rpc.com")
	if err != nil {
		panic(err)
	}
	valid, err := sigverify.VerifyERC1271HexSignature(
		context.Background(),
		client,
		ethcommon.HexToAddress("0x4836A472ab1dd406ECb8D0F933A985541ee3921f"),
		[]byte{120, 113, 119},
		"0xc0f8db6019888d87a0afc1299e81ef45d3abce64f63072c8d7a6ef00f5f82c1522958ff110afa98b8c0d23b558376db1d2fbab4944e708f8bf6dc7b977ee07201b00",
	)
	fmt.Println(valid, err) // true <nil>
}

Contribution

Thank you for considering to help out with the source code! Welcome contributions from anyone on the internet, and are grateful for even the smallest of fixes!

If you'd like to contribute to this project, please fork, fix, commit and send a pull request for me to review and merge into the main code base.

Please make sure your contributions adhere to our coding guidelines:

• Code must adhere to the official Go formatting guidelines (i.e. uses gofmt).
• Code must be documented adhering to the official Go commentary guidelines.
• Pull requests need to be based on and opened against the master branch.