func (hs *HmacSigner) VerifyBytes(buf, sig []byte) error {
	var err error

	// check hs.key
	if hs.key == nil {
		return ErrMissingPrivateKey
	}

	// hash
	h := hmac.New(hs.hash.New, hs.key)
	_, err = h.Write(buf)
	if err != nil {
		return err
	}

	// verify
	if !hmac.Equal(h.Sum(nil), sig) {
		return ErrInvalidSignature
	}

	return nil
}
func (hs *HmacSigner) VerifyBytes(buf, sig []byte) error {
	var err error

	
	if hs.key == nil {
		return ErrMissingPrivateKey
	}

	
	h := hmac.New(hs.hash.New, hs.key)
	_, err = h.Write(buf)
	if err != nil {
		return err
	}

	
	if !hmac.Equal(h.Sum(nil), sig) {
		return ErrInvalidSignature
	}

	return nil
}
func ( hs * HmacSigner ) VerifyBytes ( buf , sig [ ] byte ) error { var err error // check hs.key if hs . key == nil { return ErrMissingPrivateKey } // hash h := hmac . New ( hs . hash . New , hs . key ) _ , err = h . Write ( buf ) if err != nil { return err } // verify if ! hmac . Equal ( h . Sum ( nil ) , sig ) { return ErrInvalidSignature } return nil }
// VerifyBytes creates a signature for buf, comparing it against the raw sig.
// If the sig is invalid, then ErrInvalidSignature is returned.
VerifyBytes creates a signature for buf comparing it against the raw sig . If the sig is invalid then ErrInvalidSignature is returned .