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package s3crypto
import (
"bytes"
"encoding/base64"
"encoding/hex"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"reflect"
"testing"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/awstesting/unit"
"github.com/aws/aws-sdk-go/service/kms"
)
func TestNewKMSKeyGenerator(t *testing.T) {
svc := kms.New(unit.Session)
handler := NewKMSKeyGenerator(svc, "testid")
if handler == nil {
t.Error("expected non-nil handler")
}
}
func TestNewKMSKeyGeneratorWithMatDesc(t *testing.T) {
svc := kms.New(unit.Session)
handler := NewKMSKeyGeneratorWithMatDesc(svc, "testid", MaterialDescription{
"Testing": aws.String("123"),
})
if handler == nil {
t.Error("expected non-nil handler")
}
kmsHandler := handler.(*kmsKeyHandler)
expected := MaterialDescription{
"kms_cmk_id": aws.String("testid"),
"Testing": aws.String("123"),
}
if !reflect.DeepEqual(expected, kmsHandler.CipherData.MaterialDescription) {
t.Errorf("expected %v, but received %v", expected, kmsHandler.CipherData.MaterialDescription)
}
}
func TestKmsKeyHandler_GenerateCipherData(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintln(w, `{"CiphertextBlob":"AQEDAHhqBCCY1MSimw8gOGcUma79cn4ANvTtQyv9iuBdbcEF1QAAAH4wfAYJKoZIhvcNAQcGoG8wbQIBADBoBgkqhkiG9w0BBwEwHgYJYIZIAWUDBAEuMBEEDJ6IcN5E4wVbk38MNAIBEIA7oF1E3lS7FY9DkoxPc/UmJsEwHzL82zMqoLwXIvi8LQHr8If4Lv6zKqY8u0+JRgSVoqCvZDx3p8Cn6nM=","KeyId":"arn:aws:kms:us-west-2:042062605278:key/c80a5cdb-8d09-4f9f-89ee-df01b2e3870a","Plaintext":"6tmyz9JLBE2yIuU7iXpArqpDVle172WSmxjcO6GNT7E="}`)
}))
defer ts.Close()
sess := unit.Session.Copy(&aws.Config{
MaxRetries: aws.Int(0),
Endpoint: aws.String(ts.URL),
DisableSSL: aws.Bool(true),
S3ForcePathStyle: aws.Bool(true),
Region: aws.String("us-west-2"),
})
svc := kms.New(sess)
handler := NewKMSKeyGenerator(svc, "testid")
keySize := 32
ivSize := 16
cd, err := handler.GenerateCipherData(keySize, ivSize)
if err != nil {
t.Errorf("expected no error, but received %v", err)
}
if keySize != len(cd.Key) {
t.Errorf("expected %d, but received %d", keySize, len(cd.Key))
}
if ivSize != len(cd.IV) {
t.Errorf("expected %d, but received %d", ivSize, len(cd.IV))
}
}
func TestKmsKeyHandler_DecryptKey(t *testing.T) {
key, _ := hex.DecodeString("31bdadd96698c204aa9ce1448ea94ae1fb4a9a0b3c9d773b51bb1822666b8f22")
keyB64 := base64.URLEncoding.EncodeToString(key)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body)
if err != nil {
t.Errorf("expected no error, got %v", err)
w.WriteHeader(500)
return
}
if bytes.Contains(body, []byte(`"KeyId":"test"`)) {
t.Errorf("expected CMK to not be sent")
}
fmt.Fprintln(w, fmt.Sprintf("%s%s%s", `{"KeyId":"test-key-id","Plaintext":"`, keyB64, `"}`))
}))
defer ts.Close()
sess := unit.Session.Copy(&aws.Config{
MaxRetries: aws.Int(0),
Endpoint: aws.String(ts.URL),
DisableSSL: aws.Bool(true),
S3ForcePathStyle: aws.Bool(true),
Region: aws.String("us-west-2"),
})
handler, err := (kmsKeyHandler{kms: kms.New(sess)}).decryptHandler(Envelope{WrapAlg: KMSWrap, MatDesc: `{"kms_cmk_id":"test"}`})
if err != nil {
t.Errorf("expected no error, but received %v", err)
}
plaintextKey, err := handler.DecryptKey([]byte{1, 2, 3, 4})
if err != nil {
t.Errorf("expected no error, but received %v", err)
}
if !bytes.Equal(key, plaintextKey) {
t.Errorf("expected %v, but received %v", key, plaintextKey)
}
}
func TestKmsKeyHandler_DecryptKey_WithCMK(t *testing.T) {
key, _ := hex.DecodeString("31bdadd96698c204aa9ce1448ea94ae1fb4a9a0b3c9d773b51bb1822666b8f22")
keyB64 := base64.URLEncoding.EncodeToString(key)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body)
if err != nil {
t.Errorf("expected no error, got %v", err)
w.WriteHeader(500)
return
}
if !bytes.Contains(body, []byte(`"KeyId":"thisKey"`)) {
t.Errorf("expected CMK to be sent")
}
fmt.Fprintln(w, fmt.Sprintf("%s%s%s", `{"KeyId":"test-key-id","Plaintext":"`, keyB64, `"}`))
}))
defer ts.Close()
sess := unit.Session.Copy(&aws.Config{
MaxRetries: aws.Int(0),
Endpoint: aws.String(ts.URL),
DisableSSL: aws.Bool(true),
S3ForcePathStyle: aws.Bool(true),
Region: aws.String("us-west-2"),
})
handler, err := newKMSWrapEntryWithCMK(kms.New(sess), "thisKey")(Envelope{WrapAlg: KMSWrap, MatDesc: `{"kms_cmk_id":"test"}`})
if err != nil {
t.Errorf("expected no error, but received %v", err)
}
plaintextKey, err := handler.DecryptKey([]byte{1, 2, 3, 4})
if err != nil {
t.Errorf("expected no error, but received %v", err)
}
if !bytes.Equal(key, plaintextKey) {
t.Errorf("expected %v, but received %v", key, plaintextKey)
}
}
func TestRegisterKMSWrapWithAnyCMK(t *testing.T) {
kmsClient := kms.New(unit.Session.Copy())
cr := NewCryptoRegistry()
if err := RegisterKMSWrapWithAnyCMK(cr, kmsClient); err != nil {
t.Errorf("expected no error, got %v", err)
}
if wrap, ok := cr.GetWrap(KMSWrap); !ok {
t.Errorf("expected wrapped to be present")
} else if wrap == nil {
t.Errorf("expected wrap to not be nil")
}
if err := RegisterKMSWrapWithCMK(cr, kmsClient, "test-key-id"); err == nil {
t.Error("expected error, got none")
}
}
func TestRegisterKMSWrapWithCMK(t *testing.T) {
kmsClient := kms.New(unit.Session.Copy())
cr := NewCryptoRegistry()
if err := RegisterKMSWrapWithCMK(cr, kmsClient, "cmkId"); err != nil {
t.Errorf("expected no error, got %v", err)
}
if wrap, ok := cr.GetWrap(KMSWrap); !ok {
t.Errorf("expected wrapped to be present")
} else if wrap == nil {
t.Errorf("expected wrap to not be nil")
}
if err := RegisterKMSWrapWithAnyCMK(cr, kmsClient); err == nil {
t.Error("expected error, got none")
}
}
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