Move attestation, atls and oid packages to internal directory

Signed-off-by: Daniel Weiße <dw@edgeless.systems>

internal/attestation/gcp/gcp_test.go

@@ -0,0 +1,52 @@
+//go:build gcp
+// +build gcp
+
+package gcp
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/edgelesssys/constellation/internal/attestation/vtpm"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestAttestation(t *testing.T) {
+	assert := assert.New(t)
+	require := require.New(t)
+
+	issuer := NewIssuer()
+	validator := NewValidator(map[uint32][]byte{0: PCR0})
+
+	nonce := []byte{2, 3, 4}
+	challenge := []byte("Constellation")
+
+	attDocRaw, err := issuer.Issue(challenge, nonce)
+	assert.NoError(err)
+
+	var attDoc vtpm.AttestationDocument
+	err = json.Unmarshal(attDocRaw, &attDoc)
+	require.NoError(err)
+	assert.Equal(challenge, attDoc.UserData)
+	originalPCR := attDoc.Attestation.Quotes[1].Pcrs.Pcrs[uint32(vtpm.PCRIndexOwnerID)]
+
+	out, err := validator.Validate(attDocRaw, nonce)
+	assert.NoError(err)
+	assert.Equal(challenge, out)
+
+	// Mark node as intialized. We should still be abe to validate
+	assert.NoError(vtpm.MarkNodeAsInitialized(vtpm.OpenVTPM, []byte("Test"), []byte("Nonce")))
+
+	attDocRaw, err = issuer.Issue(challenge, nonce)
+	assert.NoError(err)
+
+	// Make sure the PCR changed
+	err = json.Unmarshal(attDocRaw, &attDoc)
+	require.NoError(err)
+	assert.NotEqual(originalPCR, attDoc.Attestation.Quotes[1].Pcrs.Pcrs[uint32(vtpm.PCRIndexOwnerID)])
+
+	out, err = validator.Validate(attDocRaw, nonce)
+	assert.NoError(err)
+	assert.Equal(challenge, out)
+}