kms: rename kms to keyservice

In the light of extending our eKMS support it will be helpful
to have a tighter use of the word "KMS".
KMS should refer to the actual component that manages keys.
The keyservice, also called KMS in the constellation code,
does not manage keys itself. It talks to a KMS backend,
which in turn does the actual key management.

keyservice/internal/test/azure_test.go

@@ -0,0 +1,129 @@
+//go:build integration
+
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package test
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/edgelesssys/constellation/v2/keyservice/internal/config"
+	"github.com/edgelesssys/constellation/v2/keyservice/internal/storage"
+	"github.com/edgelesssys/constellation/v2/keyservice/kms/azure"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+const (
+	azVaultName     = "edgeless-constellation-t"
+	azHSMName       = "edgeless-constellation-h"
+	azContainerName = "constellation-test-storage"
+)
+
+func TestAzureStorage(t *testing.T) {
+	if !*runAzStorage {
+		t.Skip("Skipping Azure storage test")
+	}
+	if *azConnectionString == "" {
+		t.Fatal("Connection string for Azure storage must be set using the '-azStorageConn' flag")
+	}
+	assert := assert.New(t)
+	require := require.New(t)
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
+	defer cancel()
+	store, err := storage.NewAzureStorage(ctx, *azConnectionString, azContainerName, nil)
+	require.NoError(err)
+
+	testData := []byte("Constellation test data")
+	testName := "constellation-test"
+
+	err = store.Put(ctx, testName, testData)
+	assert.NoError(err)
+
+	got, err := store.Get(ctx, testName)
+	assert.NoError(err)
+	assert.Equal(testData, got)
+
+	_, err = store.Get(ctx, addSuffix("does-not-exist"))
+	assert.ErrorIs(err, storage.ErrDEKUnset)
+}
+
+func TestAzureKeyVault(t *testing.T) {
+	if !*runAzKms {
+		t.Skip("Skipping Azure Key Vault test")
+	}
+
+	assert := assert.New(t)
+	require := require.New(t)
+
+	store := storage.NewMemMapStorage()
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
+	defer cancel()
+	client, err := azure.New(ctx, azVaultName, azure.DefaultCloud, store, nil)
+	require.NoError(err)
+
+	kekName := "test-kek"
+	dekName := "test-dek"
+
+	assert.NoError(client.CreateKEK(ctx, kekName, nil))
+
+	res, err := client.GetDEK(ctx, kekName, dekName, config.SymmetricKeyLength)
+	assert.NoError(err)
+
+	res2, err := client.GetDEK(ctx, kekName, dekName, config.SymmetricKeyLength)
+	assert.NoError(err)
+	assert.Equal(res, res2)
+
+	res3, err := client.GetDEK(ctx, kekName, addSuffix(dekName), config.SymmetricKeyLength)
+	assert.NoError(err)
+	assert.Len(res3, config.SymmetricKeyLength)
+	assert.NotEqual(res, res3)
+}
+
+func TestAzureHSM(t *testing.T) {
+	if !*runAzHsm {
+		t.Skip("Skipping Azure HSM test")
+	}
+
+	// This test requires an actively running Azure HSM
+	// Since the HSMs are quiet expensive, you will have to create one manually to run this test
+	// See: https://docs.microsoft.com/en-us/azure/key-vault/managed-hsm/quick-create-cli
+	// Don't forget to remove the HSM after testing: az keyvault purge --hsm-name <HSM>
+	assert := assert.New(t)
+	require := require.New(t)
+
+	store := storage.NewMemMapStorage()
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
+	defer cancel()
+	client, err := azure.NewHSM(ctx, azHSMName, store, nil)
+	require.NoError(err)
+
+	kekName := "test-kek"
+	dekName := "test-dek"
+	importedKek := "test-kek-import"
+	kekData := []byte{0x52, 0xFD, 0xFC, 0x07, 0x21, 0x82, 0x65, 0x4F, 0x16, 0x3F, 0x5F, 0x0F, 0x9A, 0x62, 0x1D, 0x72, 0x95, 0x66, 0xC7, 0x4D, 0x10, 0x03, 0x7C, 0x4D, 0x7B, 0xBB, 0x04, 0x07, 0xD1, 0xE2, 0xC6, 0x49}
+
+	assert.NoError(client.CreateKEK(ctx, importedKek, kekData))
+
+	assert.NoError(client.CreateKEK(ctx, kekName, nil))
+
+	res, err := client.GetDEK(ctx, kekName, dekName, config.SymmetricKeyLength)
+	require.NoError(err)
+	assert.NotNil(res)
+
+	res2, err := client.GetDEK(ctx, kekName, dekName, config.SymmetricKeyLength)
+	require.NoError(err)
+	assert.Equal(res, res2)
+
+	res3, err := client.GetDEK(ctx, kekName, addSuffix(dekName), config.SymmetricKeyLength)
+	require.NoError(err)
+	assert.Len(res3, config.SymmetricKeyLength)
+	assert.NotEqual(res, res3)
+}