// Copyright 2026 The Sigstore Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package certificate

import (
	"bytes"
	"crypto/x509"
)

func IsSelfSigned(certificate *x509.Certificate) bool {
	if !bytes.Equal(certificate.RawSubject, certificate.RawIssuer) {
		return false
	}
	return certificate.CheckSignatureFrom(certificate) == nil
}