/
citadel_test_util.go
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/
citadel_test_util.go
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// Copyright 2018 Istio 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 citadel
import (
"crypto/x509"
"fmt"
"istio.io/istio/pkg/spiffe"
v1 "k8s.io/api/core/v1"
"istio.io/istio/security/pkg/k8s/controller"
"istio.io/istio/security/pkg/pki/util"
)
// ExamineSecret examines the content of an Istio secret to make sure that
// * Secret type is correctly set;
// * Key, certificate and CA root are correctly saved in the data section;
func ExamineSecret(secret *v1.Secret) error {
if secret.Type != controller.IstioSecretType {
return fmt.Errorf(`unexpected value for the "type" annotation: expecting %v but got %v`,
controller.IstioSecretType, secret.Type)
}
for _, key := range []string{controller.CertChainID, controller.RootCertID, controller.PrivateKeyID} {
if _, exists := secret.Data[key]; !exists {
return fmt.Errorf("%v does not exist in the data section", key)
}
}
expectedID, err := spiffe.GenSpiffeURI(secret.GetNamespace(), "default")
if err != nil {
return err
}
verifyFields := &util.VerifyFields{
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
IsCA: false,
Host: expectedID,
}
if err := util.VerifyCertificate(secret.Data[controller.PrivateKeyID],
secret.Data[controller.CertChainID], secret.Data[controller.RootCertID],
verifyFields); err != nil {
return fmt.Errorf("certificate verification failed: %v", err)
}
return nil
}