這段代碼連接到以太坊主網(wǎng)節(jié)點(diǎn),隨機(jī)生成私鑰,并將其轉(zhuǎn)換為公鑰和地址。然后,它獲取錢(qián)包地址的余額,使用錢(qián)包向另一個(gè)地址轉(zhuǎn)賬,并打印出交易哈希。
在代碼中,使用了以太坊Go語(yǔ)言客戶(hù)端庫(kù)(go-ethereum)來(lái)處理以太坊的相關(guān)操作。代碼中的注釋解釋了代碼的每個(gè)部分的功能。需要注意的是,在實(shí)際項(xiàng)目中使用錢(qián)包程序時(shí),需要注意私鑰的安全性,避免私鑰泄漏。
package main
import (
"context"
"crypto/ecdsa"
"fmt"
"log"
"math/big"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethclient"
)
func
main
() {
// 連接以太坊節(jié)點(diǎn)
client, err := ethclient.Dial(
"https://mainnet.infura.io")
if err !=
nil {
log.Fatal(err)
}
// 隨機(jī)生成私鑰
privateKey, err := crypto.GenerateKey()
if err !=
nil {
log.Fatal(err)
}
// 將私鑰轉(zhuǎn)換為公鑰和地址
publicKey := privateKey.Public()
publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
if !ok {
log.Fatal(
"cannot assert type: publicKey is not of type *ecdsa.PublicKey")
}
address := crypto.PubkeyToAddress(*publicKeyECDSA)
// 打印地址和私鑰
fmt.Printf(
"地址:%s\n", address.Hex())
fmt.Printf(
"私鑰:%x\n", privateKey.D)
// 獲取ETH余額
balance, err := client.BalanceAt(context.Background(), address,
nil)
if err !=
nil {
log.Fatal(err)
}
fmt.Printf(
"ETH余額:%s\n", balance.String())
// 向指定地址轉(zhuǎn)賬
toAddress := common.HexToAddress(
"0x...")
amount := big.NewInt(
0)
amount.SetString(
"1000000000000000000",
10)
// 1 ETH
gasLimit :=
uint64(
21000)
gasPrice, err := client.SuggestGasPrice(context.Background())
if err !=
nil {
log.Fatal(err)
}
auth := bind.NewKeyedTransactor(privateKey)
auth.Nonce, err = client.PendingNonceAt(context.Background(), address)
if err !=
nil {
log.Fatal(err)
}
auth.Value = amount
auth.GasLimit = gasLimit
auth.GasPrice = gasPrice
tx, err := auth.SendTransaction(context.Background(), toAddress, amount)
if err !=
nil {
log.Fatal(err)
}
fmt.Printf(
"轉(zhuǎn)賬交易哈希:%s\n", tx.Hash().Hex())
}