export: support encrypted export, first version

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ExportOperation.java

@@ -19,16 +19,21 @@
 package org.sufficientlysecure.keychain.operations;
 
 
-import java.io.BufferedOutputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.OutputStream;
+import java.text.SimpleDateFormat;
 import java.util.Collections;
+import java.util.Date;
+import java.util.Locale;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import android.content.Context;
 import android.database.Cursor;
+import android.net.Uri;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.text.TextUtils;
 
 import org.spongycastle.bcpg.ArmoredOutputStream;
@@ -37,16 +42,21 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.operations.results.ExportResult;
 import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
 import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
+import org.sufficientlysecure.keychain.operations.results.PgpSignEncryptResult;
 import org.sufficientlysecure.keychain.pgp.CanonicalizedKeyRing;
+import org.sufficientlysecure.keychain.pgp.PgpSignEncryptInputParcel;
+import org.sufficientlysecure.keychain.pgp.PgpSignEncryptOperation;
 import org.sufficientlysecure.keychain.pgp.Progressable;
 import org.sufficientlysecure.keychain.pgp.UncachedKeyRing;
 import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.provider.TemporaryStorageProvider;
 import org.sufficientlysecure.keychain.service.ExportKeyringParcel;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
+import org.sufficientlysecure.keychain.util.InputData;
 import org.sufficientlysecure.keychain.util.Log;
 
 
@@ -84,7 +94,7 @@ public class ExportOperation extends BaseOperation<ExportKeyringParcel> {
     }
 
     @NonNull
-    public ExportResult execute(ExportKeyringParcel exportInput, CryptoInputParcel cryptoInput) {
+    public ExportResult execute(@NonNull ExportKeyringParcel exportInput, @Nullable CryptoInputParcel cryptoInput) {
 
         OperationLog log = new OperationLog();
         if (exportInput.mMasterKeyIds != null) {
@@ -94,25 +104,83 @@ public class ExportOperation extends BaseOperation<ExportKeyringParcel> {
         }
 
         try {
-            OutputStream outStream = mProviderHelper.getContentResolver().openOutputStream(exportInput.mOutputUri);
+
-            outStream = new BufferedOutputStream(outStream);
+            boolean nonEncryptedOutput = exportInput.mSymmetricPassphrase == null;
-            return exportKeysToStream(log, exportInput.mMasterKeyIds, exportInput.mExportSecret, outStream);
+
+            Uri exportOutputUri = nonEncryptedOutput
+                    ? exportInput.mOutputUri
+                    : TemporaryStorageProvider.createFile(mContext);
+
+            { // export key data, and possibly return if we don't encrypt
+
+                OutputStream outStream = mContext.getContentResolver().openOutputStream(exportOutputUri);
+                boolean exportSuccess = exportKeysToStream(
+                        log, exportInput.mMasterKeyIds, exportInput.mExportSecret, outStream);
+
+                if (!exportSuccess) {
+                    // if there was an error, it will be in the log so we just have to return
+                    return new ExportResult(ExportResult.RESULT_ERROR, log);
+                }
+
+                if (nonEncryptedOutput) {
+                    // log.add(LogType.MSG_EXPORT_NO_ENCRYPT, 1);
+                    log.add(LogType.MSG_EXPORT_SUCCESS, 1);
+                    return new ExportResult(ExportResult.RESULT_OK, log);
+                }
+            }
+
+            PgpSignEncryptOperation pseOp = new PgpSignEncryptOperation(mContext, mProviderHelper, mProgressable, mCancelled);
+
+            PgpSignEncryptInputParcel inputParcel = new PgpSignEncryptInputParcel();
+            inputParcel.setSymmetricPassphrase(exportInput.mSymmetricPassphrase);
+            inputParcel.setEnableAsciiArmorOutput(true);
+
+            InputStream inStream = mContext.getContentResolver().openInputStream(exportOutputUri);
+
+            String filename;
+            if (exportInput.mMasterKeyIds.length == 1) {
+                filename = "backup_" + KeyFormattingUtils.convertKeyIdToHex(exportInput.mMasterKeyIds[0]);
+                filename += exportInput.mExportSecret ? ".sec.asc" : ".pub.asc";
+            } else {
+                filename = "backup_" + new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()).format(new Date());
+                filename += exportInput.mExportSecret ? ".asc" : ".pub.asc";
+            }
+
+            InputData inputData = new InputData(inStream, 0L, filename);
+
+            OutputStream outStream = mContext.getContentResolver().openOutputStream(exportInput.mOutputUri);
+
+            PgpSignEncryptResult encryptResult = pseOp.execute(inputParcel, new CryptoInputParcel(), inputData, outStream);
+            if (!encryptResult.success()) {
+                log.addByMerge(encryptResult, 1);
+                // log.add(LogType.MSG_EXPORT_ERROR_ENCRYPT, 1);
+                return new ExportResult(ExportResult.RESULT_ERROR, log);
+            }
+
+            log.add(encryptResult, 1);
+            log.add(LogType.MSG_EXPORT_SUCCESS, 1);
+            return new ExportResult(ExportResult.RESULT_OK, log);
+
         } catch (FileNotFoundException e) {
             log.add(LogType.MSG_EXPORT_ERROR_URI_OPEN, 1);
             return new ExportResult(ExportResult.RESULT_ERROR, log);
+
         }
 
     }
 
-    ExportResult exportKeysToStream(OperationLog log, long[] masterKeyIds, boolean exportSecret, OutputStream outStream) {
+    boolean exportKeysToStream(OperationLog log, long[] masterKeyIds, boolean exportSecret, OutputStream outStream) {
 
-        int okSecret = 0, okPublic = 0, progress = 0;
+        // noinspection unused TODO use these in a log entry
+        int okSecret = 0, okPublic = 0;
+
+        int progress = 0;
 
         Cursor cursor = queryForKeys(masterKeyIds);
 
         if (cursor == null || !cursor.moveToFirst()) {
             log.add(LogType.MSG_EXPORT_ERROR_DB, 1);
-            return new ExportResult(ExportResult.RESULT_ERROR, log, okPublic, okSecret);
+            return false; // new ExportResult(ExportResult.RESULT_ERROR, log);
         }
 
         try {
@@ -148,7 +216,7 @@ public class ExportOperation extends BaseOperation<ExportKeyringParcel> {
 
         } catch (IOException e) {
             log.add(LogType.MSG_EXPORT_ERROR_IO, 1);
-            return new ExportResult(ExportResult.RESULT_ERROR, log, okPublic, okSecret);
+            return false; // new ExportResult(ExportResult.RESULT_ERROR, log);
         } finally {
             // Make sure the stream is closed
             if (outStream != null) try {
@@ -159,8 +227,7 @@ public class ExportOperation extends BaseOperation<ExportKeyringParcel> {
             cursor.close();
         }
 
-        log.add(LogType.MSG_EXPORT_SUCCESS, 1);
+        return true;
-        return new ExportResult(ExportResult.RESULT_OK, log, okPublic, okSecret);
 
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/ExportResult.java

@@ -24,39 +24,18 @@ import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
 
 public class ExportResult extends InputPendingResult {
 
-    final int mOkPublic, mOkSecret;
-
     public ExportResult(int result, OperationLog log) {
-        this(result, log, 0, 0);
-    }
-
-    public ExportResult(int result, OperationLog log, int okPublic, int okSecret) {
         super(result, log);
-        mOkPublic = okPublic;
-        mOkSecret = okSecret;
-    }
-
-
-    public ExportResult(OperationLog log, RequiredInputParcel requiredInputParcel,
-                        CryptoInputParcel cryptoInputParcel) {
-        super(log, requiredInputParcel, cryptoInputParcel);
-        // we won't use these values
-        mOkPublic = -1;
-        mOkSecret = -1;
     }
 
     /** Construct from a parcel - trivial because we have no extra data. */
     public ExportResult(Parcel source) {
         super(source);
-        mOkPublic = source.readInt();
-        mOkSecret = source.readInt();
     }
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         super.writeToParcel(dest, flags);
-        dest.writeInt(mOkPublic);
-        dest.writeInt(mOkSecret);
     }
 
     public static Creator<ExportResult> CREATOR = new Creator<ExportResult>() {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/ExportKeyringParcel.java

@@ -24,35 +24,31 @@ import android.os.Parcel;
 import android.os.Parcelable;
 
 import org.sufficientlysecure.keychain.pgp.UncachedKeyRing;
+import org.sufficientlysecure.keychain.util.Passphrase;
+
 
 public class ExportKeyringParcel implements Parcelable {
-    public String mKeyserver;
     public Uri mCanonicalizedPublicKeyringUri;
-    public UncachedKeyRing mUncachedKeyRing;
+    public Passphrase mSymmetricPassphrase;
 
     public boolean mExportSecret;
     public long mMasterKeyIds[];
     public Uri mOutputUri;
 
-    public ExportKeyringParcel(String keyserver, UncachedKeyRing uncachedKeyRing) {
+    public ExportKeyringParcel(Passphrase symmetricPassphrase,
-        mKeyserver = keyserver;
+            long[] masterKeyIds, boolean exportSecret, Uri outputUri) {
-        mUncachedKeyRing = uncachedKeyRing;
+        mSymmetricPassphrase = symmetricPassphrase;
-    }
-
-    @SuppressWarnings("unused") // TODO: is it used?
-    public ExportKeyringParcel(long[] masterKeyIds, boolean exportSecret, Uri outputUri) {
         mMasterKeyIds = masterKeyIds;
         mExportSecret = exportSecret;
         mOutputUri = outputUri;
     }
 
     protected ExportKeyringParcel(Parcel in) {
-        mKeyserver = in.readString();
         mCanonicalizedPublicKeyringUri = (Uri) in.readValue(Uri.class.getClassLoader());
-        mUncachedKeyRing = (UncachedKeyRing) in.readValue(UncachedKeyRing.class.getClassLoader());
         mExportSecret = in.readByte() != 0x00;
         mOutputUri = (Uri) in.readValue(Uri.class.getClassLoader());
         mMasterKeyIds = in.createLongArray();
+        mSymmetricPassphrase = in.readParcelable(getClass().getClassLoader());
     }
 
     @Override
@@ -62,12 +58,11 @@ public class ExportKeyringParcel implements Parcelable {
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
-        dest.writeString(mKeyserver);
         dest.writeValue(mCanonicalizedPublicKeyringUri);
-        dest.writeValue(mUncachedKeyRing);
         dest.writeByte((byte) (mExportSecret ? 0x01 : 0x00));
         dest.writeValue(mOutputUri);
         dest.writeLongArray(mMasterKeyIds);
+        dest.writeParcelable(mSymmetricPassphrase, 0);
     }
 
     public static final Parcelable.Creator<ExportKeyringParcel> CREATOR = new Parcelable.Creator<ExportKeyringParcel>() {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/BackupCodeEntryFragment.java

@@ -98,6 +98,9 @@ public class BackupCodeEntryFragment extends Fragment implements OnBackStackChan
     void switchState(BackupCodeState state) {
 
         switch (state) {
+            case STATE_UNINITIALIZED:
+                throw new AssertionError("can't switch to uninitialized state, this is a bug!");
+
             case STATE_DISPLAY:
                 mTitleAnimator.setDisplayedChild(0);
                 mStatusAnimator.setDisplayedChild(0);
@@ -281,7 +284,8 @@ public class BackupCodeEntryFragment extends Fragment implements OnBackStackChan
 
     }
 
-    private void animateFlashText(final TextView[] textViews, int color1, int color2, boolean staySecondColor) {
+    private static void animateFlashText(
+            final TextView[] textViews, int color1, int color2, boolean staySecondColor) {
 
         ValueAnimator anim = ValueAnimator.ofObject(new ArgbEvaluator(), color1, color2);
         anim.addUpdateListener(new AnimatorUpdateListener() {
@@ -299,7 +303,7 @@ public class BackupCodeEntryFragment extends Fragment implements OnBackStackChan
 
     }
 
-    private void setupEditTextFocusNext(final EditText[] backupCodes) {
+    private static void setupEditTextFocusNext(final EditText[] backupCodes) {
         for (int i = 0; i < backupCodes.length -1; i++) {
 
             final int next = i+1;

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ExportHelper.java

@@ -96,7 +96,7 @@ public class ExportHelper
 
     @Override
     public ExportKeyringParcel createOperationInput() {
-        return new ExportKeyringParcel(mMasterKeyIds, mExportSecret, Uri.fromFile(mExportFile));
+        return new ExportKeyringParcel(null, mMasterKeyIds, mExportSecret, Uri.fromFile(mExportFile));
     }
 
     @Override

OpenKeychain/src/test/java/org/sufficientlysecure/keychain/operations/ExportTest.java

@@ -17,6 +17,20 @@
 
 package org.sufficientlysecure.keychain.operations;
 
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.PipedInputStream;
+import java.io.PipedOutputStream;
+import java.io.PrintStream;
+import java.security.Security;
+import java.util.Iterator;
+
+import android.app.Application;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.net.Uri;
+
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
@@ -29,26 +43,39 @@ import org.robolectric.shadows.ShadowLog;
 import org.spongycastle.bcpg.sig.KeyFlags;
 import org.spongycastle.jce.provider.BouncyCastleProvider;
 import org.sufficientlysecure.keychain.WorkaroundBuildConfig;
-import org.sufficientlysecure.keychain.operations.results.PgpEditKeyResult;
+import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
 import org.sufficientlysecure.keychain.operations.results.ExportResult;
+import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
 import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
+import org.sufficientlysecure.keychain.operations.results.PgpEditKeyResult;
+import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyInputParcel;
+import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyOperation;
 import org.sufficientlysecure.keychain.pgp.PgpKeyOperation;
 import org.sufficientlysecure.keychain.pgp.UncachedKeyRing;
 import org.sufficientlysecure.keychain.pgp.UncachedKeyRing.IteratorWithIOThrow;
 import org.sufficientlysecure.keychain.pgp.WrappedSignature;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.provider.TemporaryStorageProvider;
+import org.sufficientlysecure.keychain.service.ExportKeyringParcel;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel.Algorithm;
 import org.sufficientlysecure.keychain.service.SaveKeyringParcel.ChangeUnlockParcel;
+import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
+import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.util.Passphrase;
 import org.sufficientlysecure.keychain.util.ProgressScaler;
 import org.sufficientlysecure.keychain.util.TestingUtils;
 
-import java.io.ByteArrayInputStream;
+import static org.junit.Assert.assertEquals;
-import java.io.ByteArrayOutputStream;
+import static org.junit.Assert.assertFalse;
-import java.io.PrintStream;
+import static org.junit.Assert.assertTrue;
-import java.security.Security;
+import static org.mockito.Matchers.any;
-import java.util.Iterator;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
 
 @RunWith(RobolectricGradleTestRunner.class)
 @Config(constants = WorkaroundBuildConfig.class, sdk = 21, manifest = "src/main/AndroidManifest.xml")
@@ -82,7 +109,7 @@ public class ExportTest {
             parcel.mNewUnlock = new ChangeUnlockParcel(mKeyPhrase1);
 
             PgpEditKeyResult result = op.createSecretKeyRing(parcel);
-            Assert.assertTrue("initial test key creation must succeed", result.success());
+            assertTrue("initial test key creation must succeed", result.success());
             Assert.assertNotNull("initial test key creation must succeed", result.getRing());
 
             mStaticRing1 = result.getRing();
@@ -100,7 +127,7 @@ public class ExportTest {
             parcel.mNewUnlock = new ChangeUnlockParcel(null, new Passphrase("1234"));
 
             PgpEditKeyResult result = op.createSecretKeyRing(parcel);
-            Assert.assertTrue("initial test key creation must succeed", result.success());
+            assertTrue("initial test key creation must succeed", result.success());
             Assert.assertNotNull("initial test key creation must succeed", result.getRing());
 
             mStaticRing2 = result.getRing();
@@ -123,17 +150,17 @@ public class ExportTest {
     }
 
     @Test
-    public void testExportAll() throws Exception {
+    public void testExportAllLocalStripped() throws Exception {
         ExportOperation op = new ExportOperation(RuntimeEnvironment.application,
                 new ProviderHelper(RuntimeEnvironment.application), null);
 
         // make sure there is a local cert (so the later checks that there are none are meaningful)
-        Assert.assertTrue("second keyring has local certification", checkForLocal(mStaticRing2));
+        assertTrue("second keyring has local certification", checkForLocal(mStaticRing2));
 
         ByteArrayOutputStream out = new ByteArrayOutputStream();
-        ExportResult result = op.exportKeysToStream(new OperationLog(), null, false, out);
+        boolean result = op.exportKeysToStream(new OperationLog(), null, false, out);
 
-        Assert.assertTrue("export must be a success", result.success());
+        assertTrue("export must be a success", result);
 
         long masterKeyId1, masterKeyId2;
         if (mStaticRing1.getMasterKeyId() < mStaticRing2.getMasterKeyId()) {
@@ -148,70 +175,190 @@ public class ExportTest {
                 UncachedKeyRing.fromStream(new ByteArrayInputStream(out.toByteArray()));
 
         {
-            Assert.assertTrue("export must have two keys (1/2)", unc.hasNext());
+            assertTrue("export must have two keys (1/2)", unc.hasNext());
             UncachedKeyRing ring = unc.next();
             Assert.assertEquals("first exported key has correct masterkeyid",
                     masterKeyId1, ring.getMasterKeyId());
-            Assert.assertFalse("first exported key must not be secret", ring.isSecret());
+            assertFalse("first exported key must not be secret", ring.isSecret());
-            Assert.assertFalse("there must be no local signatures in an exported keyring",
+            assertFalse("there must be no local signatures in an exported keyring",
                     checkForLocal(ring));
         }
 
         {
-            Assert.assertTrue("export must have two keys (2/2)", unc.hasNext());
+            assertTrue("export must have two keys (2/2)", unc.hasNext());
             UncachedKeyRing ring = unc.next();
             Assert.assertEquals("second exported key has correct masterkeyid",
                     masterKeyId2, ring.getMasterKeyId());
-            Assert.assertFalse("second exported key must not be secret", ring.isSecret());
+            assertFalse("second exported key must not be secret", ring.isSecret());
-            Assert.assertFalse("there must be no local signatures in an exported keyring",
+            assertFalse("there must be no local signatures in an exported keyring",
                     checkForLocal(ring));
         }
 
         out = new ByteArrayOutputStream();
         result = op.exportKeysToStream(new OperationLog(), null, true, out);
 
-        Assert.assertTrue("export must be a success", result.success());
+        assertTrue("export must be a success", result);
 
         unc = UncachedKeyRing.fromStream(new ByteArrayInputStream(out.toByteArray()));
 
         {
-            Assert.assertTrue("export must have four keys (1/4)", unc.hasNext());
+            assertTrue("export must have four keys (1/4)", unc.hasNext());
             UncachedKeyRing ring = unc.next();
             Assert.assertEquals("1/4 exported key has correct masterkeyid",
                     masterKeyId1, ring.getMasterKeyId());
-            Assert.assertFalse("1/4 exported key must not be public", ring.isSecret());
+            assertFalse("1/4 exported key must not be public", ring.isSecret());
-            Assert.assertFalse("there must be no local signatures in an exported keyring",
+            assertFalse("there must be no local signatures in an exported keyring",
                     checkForLocal(ring));
 
-            Assert.assertTrue("export must have four keys (2/4)", unc.hasNext());
+            assertTrue("export must have four keys (2/4)", unc.hasNext());
             ring = unc.next();
             Assert.assertEquals("2/4 exported key has correct masterkeyid",
                     masterKeyId1, ring.getMasterKeyId());
-            Assert.assertTrue("2/4 exported key must be public", ring.isSecret());
+            assertTrue("2/4 exported key must be public", ring.isSecret());
-            Assert.assertFalse("there must be no local signatures in an exported keyring",
+            assertFalse("there must be no local signatures in an exported keyring",
                     checkForLocal(ring));
         }
 
         {
-            Assert.assertTrue("export must have four keys (3/4)", unc.hasNext());
+            assertTrue("export must have four keys (3/4)", unc.hasNext());
             UncachedKeyRing ring = unc.next();
             Assert.assertEquals("3/4 exported key has correct masterkeyid",
                     masterKeyId2, ring.getMasterKeyId());
-            Assert.assertFalse("3/4 exported key must not be public", ring.isSecret());
+            assertFalse("3/4 exported key must not be public", ring.isSecret());
-            Assert.assertFalse("there must be no local signatures in an exported keyring",
+            assertFalse("there must be no local signatures in an exported keyring",
                     checkForLocal(ring));
 
-            Assert.assertTrue("export must have four keys (4/4)", unc.hasNext());
+            assertTrue("export must have four keys (4/4)", unc.hasNext());
             ring = unc.next();
             Assert.assertEquals("4/4 exported key has correct masterkeyid",
                     masterKeyId2, ring.getMasterKeyId());
-            Assert.assertTrue("4/4 exported key must be public", ring.isSecret());
+            assertTrue("4/4 exported key must be public", ring.isSecret());
-            Assert.assertFalse("there must be no local signatures in an exported keyring",
+            assertFalse("there must be no local signatures in an exported keyring",
                     checkForLocal(ring));
         }
 
     }
 
+    @Test
+    public void testExportUnencrypted() throws Exception {
+
+        ContentResolver mockResolver = mock(ContentResolver.class);
+
+        Uri fakeOutputUri = Uri.parse("content://fake/out/1");
+        ByteArrayOutputStream outStream1 = new ByteArrayOutputStream();
+        when(mockResolver.openOutputStream(fakeOutputUri)).thenReturn(outStream1);
+
+        Application spyApplication = spy(RuntimeEnvironment.application);
+        when(spyApplication.getContentResolver()).thenReturn(mockResolver);
+
+        ExportOperation op = new ExportOperation(spyApplication,
+                new ProviderHelper(RuntimeEnvironment.application), null);
+
+        ExportKeyringParcel parcel = new ExportKeyringParcel(null,
+                new long[] { mStaticRing1.getMasterKeyId() }, false, fakeOutputUri);
+
+        ExportResult result = op.execute(parcel, null);
+
+        verify(mockResolver).openOutputStream(fakeOutputUri);
+
+        assertTrue("export must succeed", result.success());
+
+        TestingUtils.assertArrayEqualsPrefix("exported data must start with ascii armor header",
+                "-----BEGIN PGP PUBLIC KEY BLOCK-----\n".getBytes(), outStream1.toByteArray());
+        TestingUtils.assertArrayEqualsSuffix("exported data must end with ascii armor header",
+                "-----END PGP PUBLIC KEY BLOCK-----\n".getBytes(), outStream1.toByteArray());
+
+        {
+            IteratorWithIOThrow<UncachedKeyRing> unc
+                    = UncachedKeyRing.fromStream(new ByteArrayInputStream(outStream1.toByteArray()));
+
+            assertTrue("export must have one key", unc.hasNext());
+            UncachedKeyRing ring = unc.next();
+            Assert.assertEquals("exported key has correct masterkeyid",
+                    mStaticRing1.getMasterKeyId(), ring.getMasterKeyId());
+            assertFalse("export must have exactly one key", unc.hasNext());
+        }
+
+    }
+
+    @Test
+    public void testExportEncrypted() throws Exception {
+
+
+        Application spyApplication;
+        ContentResolver mockResolver = mock(ContentResolver.class);
+
+        Uri fakePipedUri, fakeOutputUri;
+        ByteArrayOutputStream outStream; {
+
+            fakePipedUri = Uri.parse("content://fake/pipe/1");
+            PipedInputStream pipedInStream = new PipedInputStream(8192);
+            PipedOutputStream pipedOutStream = new PipedOutputStream(pipedInStream);
+            when(mockResolver.openOutputStream(fakePipedUri)).thenReturn(pipedOutStream);
+            when(mockResolver.openInputStream(fakePipedUri)).thenReturn(pipedInStream);
+            when(mockResolver.insert(eq(TemporaryStorageProvider.CONTENT_URI), any(ContentValues.class)))
+                    .thenReturn(fakePipedUri);
+
+            fakeOutputUri = Uri.parse("content://fake/out/1");
+            outStream = new ByteArrayOutputStream();
+            when(mockResolver.openOutputStream(fakeOutputUri)).thenReturn(outStream);
+
+            spyApplication = spy(RuntimeEnvironment.application);
+            when(spyApplication.getContentResolver()).thenReturn(mockResolver);
+        }
+
+        Passphrase passphrase = new Passphrase("abcde");
+
+        { // export encrypted
+            ExportOperation op = new ExportOperation(spyApplication,
+                    new ProviderHelper(RuntimeEnvironment.application), null);
+
+            ExportKeyringParcel parcel = new ExportKeyringParcel(passphrase,
+                    new long[] { mStaticRing1.getMasterKeyId() }, false, fakeOutputUri);
+
+            ExportResult result = op.execute(parcel, null);
+
+            verify(mockResolver).openOutputStream(fakePipedUri);
+            verify(mockResolver).openInputStream(fakePipedUri);
+            verify(mockResolver).openOutputStream(fakeOutputUri);
+
+            assertTrue("export must succeed", result.success());
+            TestingUtils.assertArrayEqualsPrefix("exported data must start with ascii armor header",
+                    "-----BEGIN PGP MESSAGE-----\n".getBytes(), outStream.toByteArray());
+        }
+
+        {
+            PgpDecryptVerifyOperation op = new PgpDecryptVerifyOperation(RuntimeEnvironment.application,
+                    new ProviderHelper(RuntimeEnvironment.application), null);
+
+            PgpDecryptVerifyInputParcel input = new PgpDecryptVerifyInputParcel(outStream.toByteArray());
+            input.setAllowSymmetricDecryption(true);
+
+            {
+                DecryptVerifyResult result = op.execute(input, new CryptoInputParcel());
+                assertTrue("decryption must return pending without passphrase", result.isPending());
+                Assert.assertTrue("should contain pending passphrase log entry",
+                        result.getLog().containsType(LogType.MSG_DC_PENDING_PASSPHRASE));
+            }
+            {
+                DecryptVerifyResult result = op.execute(input, new CryptoInputParcel(new Passphrase("bad")));
+                assertFalse("decryption must fail with bad passphrase", result.success());
+                Assert.assertTrue("should contain bad passphrase log entry",
+                        result.getLog().containsType(LogType.MSG_DC_ERROR_SYM_PASSPHRASE));
+            }
+
+            DecryptVerifyResult result = op.execute(input, new CryptoInputParcel(passphrase));
+            assertTrue("decryption must succeed with passphrase", result.success());
+
+            assertEquals("backup filename should be backup_keyid.pub.asc",
+                    "backup_" + KeyFormattingUtils.convertKeyIdToHex(mStaticRing1.getMasterKeyId()) + ".pub.asc",
+                    result.getDecryptionMetadata().getFilename());
+
+        }
+
+    }
+
+
     /** This function checks whether or not there are any local signatures in a keyring. */
     private boolean checkForLocal(UncachedKeyRing ring) {
         Iterator<WrappedSignature> sigs = ring.getPublicKey().getSignatures();

OpenKeychain/src/test/java/org/sufficientlysecure/keychain/util/TestingUtils.java

@@ -19,6 +19,9 @@ package org.sufficientlysecure.keychain.util;
 
 import java.util.Random;
 
+import junit.framework.Assert;
+
+
 public class TestingUtils {
     public static Passphrase genPassphrase() {
         return genPassphrase(false);
@@ -35,4 +38,25 @@ public class TestingUtils {
         System.out.println("Generated passphrase: '" + passbuilder.toString() + "'");
         return new Passphrase(passbuilder.toString());
     }
+
+    public static void assertArrayEqualsPrefix(String msg, byte[] expected, byte[] actual) {
+
+        Assert.assertTrue("exepected must be shorter or equal to actual array length",
+                expected.length <= actual.length);
+        for (int i = 0; i < expected.length; i++) {
+            Assert.assertEquals(msg, expected[i], actual[i]);
+        }
+
+    }
+
+    public static void assertArrayEqualsSuffix(String msg, byte[] expected, byte[] actual) {
+
+        Assert.assertTrue("exepected must be shorter or equal to actual array length",
+                expected.length <= actual.length);
+        for (int i = 0; i < expected.length; i++) {
+            Assert.assertEquals(msg, expected[i], actual[actual.length -expected.length +i]);
+        }
+
+    }
+
 }