1 /* 2 Copyright 2018 The Kubernetes Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package renewal 18 19 import ( 20 "crypto" 21 "crypto/x509" 22 23 "k8s.io/kubernetes/cmd/kubeadm/app/util/pkiutil" 24 ) 25 26 // FileRenewer define a certificate renewer implementation that uses given CA cert and key for generating new certificates 27 type FileRenewer struct { 28 caCert *x509.Certificate 29 caKey crypto.Signer 30 } 31 32 // NewFileRenewer returns a new certificate renewer that uses given CA cert and key for generating new certificates 33 func NewFileRenewer(caCert *x509.Certificate, caKey crypto.Signer) *FileRenewer { 34 return &FileRenewer{ 35 caCert: caCert, 36 caKey: caKey, 37 } 38 } 39 40 // Renew a certificate using a given CA cert and key 41 func (r *FileRenewer) Renew(cfg *pkiutil.CertConfig) (*x509.Certificate, crypto.Signer, error) { 42 return pkiutil.NewCertAndKey(r.caCert, r.caKey, cfg) 43 } 44