generate a eth wallet

gistfile1.txt

package main

import (
	"bytes"
	"flag"
	"fmt"
	"log"

	"crypto/ecdsa"
	"crypto/hmac"
	"crypto/sha256"

	"github.com/ethereum/go-ethereum/common/hexutil"
	"github.com/ethereum/go-ethereum/crypto"
	"golang.org/x/crypto/sha3"
)

var (
	token string
	mark  string
)

func main() {

	flag.StringVar(&token, "token", "", "token,keep secret")
	flag.StringVar(&mark, "mark", "", "mark(代号,用来生成不同的私钥)")
	flag.Parse()

	mac := hmac.New(sha256.New, []byte(token))
	mac.Write([]byte(mark))
	sign := mac.Sum(nil)

	//GenerateKey 需要40个字节的随机数,所以再把签名再做一次hash当做随机数
	buf := bytes.NewBuffer(sign)
	mac.Write(sign)
	buf.Write(mac.Sum(nil))

	// 把hmac当做随机数，生成私钥
	private, err := ecdsa.GenerateKey(crypto.S256(), buf)
	if err != nil {
		log.Fatal(err)
	}
	privateKeyBytes := crypto.FromECDSA(private)
	fmt.Println(hexutil.Encode(privateKeyBytes)[2:])

	publicKey := private.Public()

	publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
	if !ok {
		log.Fatal("error casting public key to ECDSA")
	}

	publicKeyBytes := crypto.FromECDSAPub(publicKeyECDSA)
	// fmt.Println(hexutil.Encode(publicKeyBytes)[4:])

	address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
	fmt.Println(address)

	hash := sha3.NewLegacyKeccak256()
	hash.Write(publicKeyBytes[1:])
	fmt.Println(hexutil.Encode(hash.Sum(nil)[12:]))

}