package main

import (
	"encoding/hex"
	"fmt"

	"github.com/bytom/crypto/sm2/chainkd"
)

func main() {
	strMessage := "1234abcd"
	byteMessage, _ := hex.DecodeString(strMessage)
	strXprv := "c003f4bcccf9ad6f05ad2c84fa5ff98430eb8e73de5de232bc29334c7d074759d513bc370335cac51d77f0be5dfe84de024cfee562530b4d873b5f5e2ff4f57c"
	byteXprv, _ := hex.DecodeString(strXprv)
	xprv := new(chainkd.XPrv)
	copy(xprv[:], byteXprv[:])

	xpub := xprv.XPub()
	strXpub := hex.EncodeToString(xpub[:])

	sig := xprv.Sign(byteMessage)
	strSig := hex.EncodeToString(sig[:])
	fmt.Println("xprv:    ", strXprv)
	fmt.Println("xpub:    ", strXpub)
	fmt.Println("message: ", strMessage)
	fmt.Println("sig:     ", strSig)
}