package kgc

import (
	"bytes"
	"crypto/sha256"
	"schain/proto/util"
)

func Certificateless_Verify(creatorBytes []byte, signature, msg []byte) error {

	creator, err := util.UnmarshalCreator(creatorBytes)

	if err != nil {
		return err
	}

	publicKey := creator.IdBytes

	digest := sha256.Sum256(msg)

	data := append(publicKey, digest[:]...)

	if equal := bytes.Equal(data, signature); equal {
		return nil
	}

	return err
}