package lnwire

import (
	"crypto/rand"
	"encoding/hex"

	"github.com/btcsuite/btcd/btcec/v2"
)

// pubkeyFromHex parses a Bitcoin public key from a hex encoded string.
func pubkeyFromHex(keyHex string) (*btcec.PublicKey, error) {
	bytes, err := hex.DecodeString(keyHex)
	if err != nil {
		return nil, err
	}

	return btcec.ParsePubKey(bytes)
}

// generateRandomBytes returns a slice of n random bytes.
func generateRandomBytes(n int) ([]byte, error) {
	b := make([]byte, n)
	_, err := rand.Read(b)
	if err != nil {
		return nil, err
	}

	return b, nil
}