以太坊私鑰到公鑰到地址的計算，golang

借助geth官方提供的函數可以很簡單的實現代碼如下

package main

import (
    "crypto/ecdsa"
    "encoding/hex"
    "fmt"

    "github.com/ethereum/go-ethereum/crypto"
)

func main() {
    priKeyHash := "796c823671b118258b53ef6056fd1f9fc96d125600f348f75f397b2000267fe8"
    // 創建私鑰對象，上面私鑰沒有錢哦
    priKey, err := crypto.HexToECDSA(priKeyHash)
    if err != nil {
        panic(err)
    }
    priKeyBytes := crypto.FromECDSA(priKey)
    fmt.Printf("私鑰為: %s\n", hex.EncodeToString(priKeyBytes))

    pubKey := priKey.Public().(*ecdsa.PublicKey)
    // 獲取公鑰並去除頭部0x04
    pubKeyBytes := crypto.FromECDSAPub(pubKey)[1:]
    fmt.Printf("公鑰為: %s\n", hex.EncodeToString(pubKeyBytes))

    // 獲取地址
    addr := crypto.PubkeyToAddress(*pubKey)
    fmt.Printf("地址為: %s\n", addr.Hex())
}