概述
以下是用 Go 实现 EIP-712 的签名和验证签名的代码示例:
package main import ( "encoding/hex" "encoding/json" "fmt" "github.com/ethereum/go-ethereum/accounts/abi" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/crypto" ) // Struct representing the typed data for signing type TypedData struct { Types map[string][]Type `json:"types"` PrimaryType string `json:"primaryType"` Domain Domain `json:"domain"` Message interface{} `json:"message"` } type Type struct { Name string `json:"name"` Type string `json:"type"` } type Domain struct { Name string `json:"name"` Version string `json:"version"` ChainId uint `json:"chainId"` VerifyingContract string `json:"verifyingContract"` Salt string `json:"salt,omitempty"` } func main() { // Example typed data typedData := TypedData{ Types: map[string][]Type{ "EIP712Domain": { {"name", "string"}, {"version", "string"}, {"chainId", "uint"}, {"verifyingContract", "address"}, }, "Person": { {"name", "string"}, {"wallet", "address"}, }, }, PrimaryType: "Person", Domain: Domain{ Name: "Example", Version: "1", ChainId: 1, VerifyingContract: "0x0000000000000000000000000000000000000000", // Address of verifying contract }, Message: map[string]interface{}{ "name": "Bob", "wallet": "0x1234567890123456789012345678901234567890", // Address of person }, } // Sign typed data signature, err := SignTypedData(typedData, "0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef") if err != nil { fmt.Println("Error signing data:", err) return } fmt.Println("Signature:", signature) // Verify signature address, err := VerifyTypedData(typedData, signature) if err != nil { fmt.Println("Error verifying signature:", err) return } fmt.Println("Address:", address) } // SignTypedData signs the given typed data with the provided private key func SignTypedData(typedData TypedData, privateKeyHex string) (string, error) { typedDataBytes, err := json.Marshal(typedData) if err != nil { return "", err } hash := crypto.Keccak256Hash(typedDataBytes) privateKey, err := crypto.HexToECDSA(privateKeyHex) if err != nil { return "", err } signature, err := crypto.Sign(hash.Bytes(), privateKey) if err != nil { return "", err } return hex.EncodeToString(signature), nil } // VerifyTypedData verifies the given typed data signature func VerifyTypedData(typedData TypedData, signatureHex string) (common.Address, error) { typedDataBytes, err := json.Marshal(typedData) if err != nil { return common.Address{}, err } hash := crypto.Keccak256Hash(typedDataBytes) signature, err := hex.DecodeString(signatureHex) if err != nil { return common.Address{}, err } sigPublicKey, err := crypto.Ecrecover(hash.Bytes(), signature) if err != nil { return common.Address{}, err } publicKeyECDSA, err := crypto.SigToPub(hash.Bytes(), signature) if err != nil { return common.Address{}, err } address := crypto.PubkeyToAddress(*publicKeyECDSA) return address, nil }
这个示例代码演示了如何使用 Go 语言来对 EIP-712 结构化数据进行签名和验证签名。您需要替换示例中的 verifyingContract
地址和私钥为实际值。
最后
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