Golang Web3钱包开发指南_写web3钱包，Golang开发6年了

以下是一个简化的Golang Web3钱包示例，用于创建和管理以太坊钱包：

package main
 
import (
    "crypto/ecdsa"
    "fmt"
    "github.com/ethereum/go-ethereum/accounts/abi/bind"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/crypto"
)
 
// 创建新的以太坊钱包
func CreateWallet() (address common.Address, privateKey *ecdsa.PrivateKey) {
    privateKey, err := crypto.GenerateKey()
    if err != nil {
        fmt.Println("Error generating private key:", err)
        return common.Address{}, nil
    }
 
    publicKey := privateKey.Public()
    publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
    if !ok {
        fmt.Println("Error casting public key to ECDSA")
        return common.Address{}, nil
    }
 
    address = crypto.PubkeyToAddress(*publicKeyECDSA)
    fmt.Printf("Wallet created with address: %s\n", address.Hex())
    return address, privateKey
}
 
// 获取钱包的地址
func GetWalletAddress(privateKey *ecdsa.PrivateKey) common.Address {
    publicKey := privateKey.Public()
    publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
    if !ok {
        fmt.Println("Error casting public key to ECDSA")
        return common.Address{}
    }
 
    return crypto.PubkeyToAddress(*publicKeyECDSA)
}
 
// 签名交易
func SignTransaction(privateKey *ecdsa.PrivateKey, tx *bind.TransactOpts) {
    signer := types.NewEIP155Signer(tx.ChainID)
    signedTx, err := types.SignTx(tx.Transaction, signer, privateKey)
    if err != nil {
        fmt.Println("Error signing transaction:", err)
        return
    }
 
    fmt.Println("Transaction signed:", signedTx)
}
 
func main() {
    // 创建新的钱包
    walletAddress, privateKey := CreateWallet()
 
    // 获取钱包地址
    address := GetWalletAddress(privateKey)
    if address != walletAddress {
        fmt.Println("Error: wallet address mismatch")
    }
 
    // 假设有一个交易需要签名
    tx := bind.NewKeyedTransactor(privateKey)
 
    // 签名交易
    SignTransaction(privateKey, tx)
}

这个示例展示了如何创建一个新的以太坊钱包、获取钱包地址以及如何对交易进行签名。这是开发Web3钱包时的基本操作，对于开发者来说是一个很好的学习资源。