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AB#2350: Configurably enforce idkeydigest on Azure

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* Add join-config entry for "enforceIdKeyDigest" bool
* Add join-config entry for "idkeydigest"
* Initially filled with TPM value from bootstrapper
* Add config entries for idkeydigest and enforceIdKeyDigest
* Extend azure attestation validator to check idkeydigest,
if configured.
* Update unittests
* Add logger to NewValidator for all CSPs
* Add csp to Updateable type

Co-authored-by: Thomas Tendyck <51411342+thomasten@users.noreply.github.com>
Co-authored-by: Daniel Weiße <dw@edgeless.systems>
This commit is contained in:
Otto Bittner 2022-08-29 16:41:09 +02:00
parent c84e44913b
commit 4adc19b7f5
31 changed files with 350 additions and 136 deletions
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14
bootstrapper/internal/kubernetes/kubernetes.go
View file

@ -2,9 +2,11 @@ package kubernetes
import (
"context"
"encoding/hex"
"encoding/json"
"fmt"
"net"
"strconv"
"strings"
"github.com/edgelesssys/constellation/bootstrapper/internal/kubernetes/k8sapi"
@ -45,12 +47,13 @@ type KubeWrapper struct {
clusterAutoscaler ClusterAutoscaler
providerMetadata ProviderMetadata
initialMeasurementsJSON []byte
initialIdKeyDigest []byte
getIPAddr func() (string, error)
}
// New creates a new KubeWrapper with real values.
func New(cloudProvider string, clusterUtil clusterUtil, configProvider configurationProvider, client k8sapi.Client, cloudControllerManager CloudControllerManager,
cloudNodeManager CloudNodeManager, clusterAutoscaler ClusterAutoscaler, providerMetadata ProviderMetadata, initialMeasurementsJSON []byte,
cloudNodeManager CloudNodeManager, clusterAutoscaler ClusterAutoscaler, providerMetadata ProviderMetadata, initialMeasurementsJSON, initialIdKeyDigest []byte,
) *KubeWrapper {
return &KubeWrapper{
cloudProvider: cloudProvider,
@ -63,6 +66,7 @@ func New(cloudProvider string, clusterUtil clusterUtil, configProvider configura
clusterAutoscaler: clusterAutoscaler,
providerMetadata: providerMetadata,
initialMeasurementsJSON: initialMeasurementsJSON,
initialIdKeyDigest: initialIdKeyDigest,
getIPAddr: getIPAddr,
}
}
@ -70,7 +74,7 @@ func New(cloudProvider string, clusterUtil clusterUtil, configProvider configura
// InitCluster initializes a new Kubernetes cluster and applies pod network provider.
func (k *KubeWrapper) InitCluster(
ctx context.Context, autoscalingNodeGroups []string, cloudServiceAccountURI, versionString string, measurementSalt []byte,
enforcedPCRs []uint32, kmsConfig resources.KMSConfig, sshUsers map[string]string, helmDeployments []byte, log *logger.Logger,
enforcedPCRs []uint32, enforceIdKeyDigest bool, kmsConfig resources.KMSConfig, sshUsers map[string]string, helmDeployments []byte, log *logger.Logger,
) ([]byte, error) {
k8sVersion, err := versions.NewValidK8sVersion(versionString)
if err != nil {
@ -174,7 +178,7 @@ func (k *KubeWrapper) InitCluster(
return nil, fmt.Errorf("setting up kms: %w", err)
}
if err := k.setupJoinService(k.cloudProvider, k.initialMeasurementsJSON, measurementSalt, enforcedPCRs); err != nil {
if err := k.setupJoinService(k.cloudProvider, k.initialMeasurementsJSON, measurementSalt, enforcedPCRs, k.initialIdKeyDigest, enforceIdKeyDigest); err != nil {
return nil, fmt.Errorf("setting up join service failed: %w", err)
}
@ -305,7 +309,7 @@ func (k *KubeWrapper) GetKubeconfig() ([]byte, error) {
}
func (k *KubeWrapper) setupJoinService(
csp string, measurementsJSON, measurementSalt []byte, enforcedPCRs []uint32,
csp string, measurementsJSON, measurementSalt []byte, enforcedPCRs []uint32, initialIdKeyDigest []byte, enforceIdKeyDigest bool,
) error {
enforcedPCRsJSON, err := json.Marshal(enforcedPCRs)
if err != nil {
@ -313,7 +317,7 @@ func (k *KubeWrapper) setupJoinService(
}
joinConfiguration := resources.NewJoinServiceDaemonset(
csp, string(measurementsJSON), string(enforcedPCRsJSON), measurementSalt,
csp, string(measurementsJSON), string(enforcedPCRsJSON), hex.EncodeToString(initialIdKeyDigest), strconv.FormatBool(enforceIdKeyDigest), measurementSalt,
)
return k.clusterUtil.SetupJoinService(k.client, joinConfiguration)