mirror of https://github.com/caddyserver/caddy
69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package caddypki
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import (
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"crypto"
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"crypto/x509"
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"time"
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"go.step.sm/crypto/keyutil"
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"go.step.sm/crypto/x509util"
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)
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func generateRoot(commonName string) (*x509.Certificate, crypto.Signer, error) {
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template, signer, err := newCert(commonName, x509util.DefaultRootTemplate, defaultRootLifetime)
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if err != nil {
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return nil, nil, err
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}
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root, err := x509util.CreateCertificate(template, template, signer.Public(), signer)
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if err != nil {
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return nil, nil, err
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}
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return root, signer, nil
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}
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func generateIntermediate(commonName string, rootCrt *x509.Certificate, rootKey crypto.Signer, lifetime time.Duration) (*x509.Certificate, crypto.Signer, error) {
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template, signer, err := newCert(commonName, x509util.DefaultIntermediateTemplate, lifetime)
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if err != nil {
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return nil, nil, err
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}
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intermediate, err := x509util.CreateCertificate(template, rootCrt, signer.Public(), rootKey)
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if err != nil {
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return nil, nil, err
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}
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return intermediate, signer, nil
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}
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func newCert(commonName, templateName string, lifetime time.Duration) (cert *x509.Certificate, signer crypto.Signer, err error) {
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signer, err = keyutil.GenerateDefaultSigner()
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if err != nil {
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return nil, nil, err
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}
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csr, err := x509util.CreateCertificateRequest(commonName, []string{}, signer)
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if err != nil {
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return nil, nil, err
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}
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template, err := x509util.NewCertificate(csr, x509util.WithTemplate(templateName, x509util.CreateTemplateData(commonName, []string{})))
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if err != nil {
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return nil, nil, err
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}
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cert = template.GetCertificate()
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cert.NotBefore = time.Now().Truncate(time.Second)
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cert.NotAfter = cert.NotBefore.Add(lifetime)
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return cert, signer, nil
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}
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