Generate Private and private key with go-ethereum

wallet-go-ethereum.md

package main

import (
    "crypto/ecdsa"
    "fmt"
    "log"

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

func main() {
    privateKey, err := crypto.GenerateKey()
    if err != nil {
        log.Fatal(err)
    }

    privateKeyBytes := crypto.FromECDSA(privateKey)
    fmt.Println(hexutil.Encode(privateKeyBytes)[2:]) // 0xfad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19

    publicKey := privateKey.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:]) // 0x049a7df67f79246283fdc93af76d4f8cdd62c4886e8cd870944e817dd0b97934fdd7719d0810951e03418205868a5c1b40b192451367f28e0088dd75e15de40c05

    address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
    fmt.Println(address) // 0x96216849c49358B10257cb55b28eA603c874b05E

    hash := sha3.NewKeccak256()
    hash.Write(publicKeyBytes[1:])
    fmt.Println(hexutil.Encode(hash.Sum(nil)[12:])) // 0x96216849c49358b10257cb55b28ea603c874b05e
}