new directory structure

1 files changed, 0 insertions, 2283 deletions

diff --git a/src/org/apg/Apg.java b/src/org/apg/Apg.java
deleted file mode 100644
index 2bfdb31e6..000000000
--- a/src/org/apg/Apg.java
+++ /dev/null
@@ -1,2283 +0,0 @@
-/*
- * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apg;
-
-import org.apg.KeyServer.AddKeyException;
-import org.apg.provider.DataProvider;
-import org.apg.provider.Database;
-import org.apg.provider.KeyRings;
-import org.apg.provider.Keys;
-import org.apg.provider.UserIds;
-import org.apg.ui.BaseActivity;
-import org.apg.ui.widget.KeyEditor;
-import org.apg.ui.widget.SectionView;
-import org.apg.ui.widget.UserIdEditor;
-import org.apg.util.IterableIterator;
-import org.spongycastle.bcpg.ArmoredInputStream;
-import org.spongycastle.bcpg.ArmoredOutputStream;
-import org.spongycastle.bcpg.BCPGOutputStream;
-import org.spongycastle.bcpg.CompressionAlgorithmTags;
-import org.spongycastle.bcpg.HashAlgorithmTags;
-import org.spongycastle.bcpg.SymmetricKeyAlgorithmTags;
-import org.spongycastle.bcpg.sig.KeyFlags;
-import org.spongycastle.jce.provider.BouncyCastleProvider;
-import org.spongycastle.jce.spec.ElGamalParameterSpec;
-import org.spongycastle.openpgp.PGPCompressedData;
-import org.spongycastle.openpgp.PGPCompressedDataGenerator;
-import org.spongycastle.openpgp.PGPEncryptedData;
-import org.spongycastle.openpgp.PGPEncryptedDataGenerator;
-import org.spongycastle.openpgp.PGPEncryptedDataList;
-import org.spongycastle.openpgp.PGPException;
-import org.spongycastle.openpgp.PGPKeyPair;
-import org.spongycastle.openpgp.PGPKeyRing;
-import org.spongycastle.openpgp.PGPKeyRingGenerator;
-import org.spongycastle.openpgp.PGPLiteralData;
-import org.spongycastle.openpgp.PGPLiteralDataGenerator;
-import org.spongycastle.openpgp.PGPObjectFactory;
-import org.spongycastle.openpgp.PGPOnePassSignature;
-import org.spongycastle.openpgp.PGPOnePassSignatureList;
-import org.spongycastle.openpgp.PGPPBEEncryptedData;
-import org.spongycastle.openpgp.PGPPrivateKey;
-import org.spongycastle.openpgp.PGPPublicKey;
-import org.spongycastle.openpgp.PGPPublicKeyEncryptedData;
-import org.spongycastle.openpgp.PGPPublicKeyRing;
-import org.spongycastle.openpgp.PGPSecretKey;
-import org.spongycastle.openpgp.PGPSecretKeyRing;
-import org.spongycastle.openpgp.PGPSignature;
-import org.spongycastle.openpgp.PGPSignatureGenerator;
-import org.spongycastle.openpgp.PGPSignatureList;
-import org.spongycastle.openpgp.PGPSignatureSubpacketGenerator;
-import org.spongycastle.openpgp.PGPSignatureSubpacketVector;
-import org.spongycastle.openpgp.PGPUtil;
-import org.spongycastle.openpgp.PGPV3SignatureGenerator;
-import org.apg.R;
-
-import android.app.Activity;
-import android.content.Context;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager.NameNotFoundException;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.net.Uri;
-import android.os.Bundle;
-import android.os.Environment;
-import android.os.Message;
-import android.view.ViewGroup;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedReader;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.EOFException;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-import java.io.RandomAccessFile;
-import java.math.BigInteger;
-import java.security.InvalidAlgorithmParameterException;
-import java.security.KeyPairGenerator;
-import java.security.NoSuchAlgorithmException;
-import java.security.NoSuchProviderException;
-import java.security.SecureRandom;
-import java.security.Security;
-import java.security.SignatureException;
-import java.util.Calendar;
-import java.util.Date;
-import java.util.GregorianCalendar;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.Map;
-import java.util.Vector;
-import java.util.regex.Pattern;
-
-public class Apg {
-    private static final String mApgPackageName = "org.thialfihar.android.apg";
-
-    public static class Intent {
-        public static final String DECRYPT = "org.thialfihar.android.apg.intent.DECRYPT";
-        public static final String ENCRYPT = "org.thialfihar.android.apg.intent.ENCRYPT";
-        public static final String DECRYPT_FILE = "org.thialfihar.android.apg.intent.DECRYPT_FILE";
-        public static final String ENCRYPT_FILE = "org.thialfihar.android.apg.intent.ENCRYPT_FILE";
-        public static final String DECRYPT_AND_RETURN = "org.thialfihar.android.apg.intent.DECRYPT_AND_RETURN";
-        public static final String ENCRYPT_AND_RETURN = "org.thialfihar.android.apg.intent.ENCRYPT_AND_RETURN";
-        public static final String SELECT_PUBLIC_KEYS = "org.thialfihar.android.apg.intent.SELECT_PUBLIC_KEYS";
-        public static final String SELECT_SECRET_KEY = "org.thialfihar.android.apg.intent.SELECT_SECRET_KEY";
-        public static final String IMPORT = "org.thialfihar.android.apg.intent.IMPORT";
-        public static final String LOOK_UP_KEY_ID = "org.thialfihar.android.apg.intent.LOOK_UP_KEY_ID";
-        public static final String LOOK_UP_KEY_ID_AND_RETURN = "org.thialfihar.android.apg.intent.LOOK_UP_KEY_ID_AND_RETURN";
-        public static final String GENERATE_SIGNATURE = "org.thialfihar.android.apg.intent.GENERATE_SIGNATURE";
-        public static final String EXPORT_KEY_TO_SERVER = "org.thialfihar.android.apg.intent.EXPORT_KEY_TO_SERVER";
-        public static final String IMPORT_FROM_QR_CODE = "org.thialfihar.android.apg.intent.IMPORT_FROM_QR_CODE";
-    }
-
-    public static final String EXTRA_TEXT = "text";
-    public static final String EXTRA_DATA = "data";
-    public static final String EXTRA_ERROR = "error";
-    public static final String EXTRA_DECRYPTED_MESSAGE = "decryptedMessage";
-    public static final String EXTRA_DECRYPTED_DATA = "decryptedData";
-    public static final String EXTRA_ENCRYPTED_MESSAGE = "encryptedMessage";
-    public static final String EXTRA_ENCRYPTED_DATA = "encryptedData";
-    public static final String EXTRA_RESULT_URI = "resultUri";
-    public static final String EXTRA_SIGNATURE = "signature";
-    public static final String EXTRA_SIGNATURE_KEY_ID = "signatureKeyId";
-    public static final String EXTRA_SIGNATURE_USER_ID = "signatureUserId";
-    public static final String EXTRA_SIGNATURE_SUCCESS = "signatureSuccess";
-    public static final String EXTRA_SIGNATURE_UNKNOWN = "signatureUnknown";
-    public static final String EXTRA_SIGNATURE_DATA = "signatureData";
-    public static final String EXTRA_SIGNATURE_TEXT = "signatureText";
-    public static final String EXTRA_USER_ID = "userId";
-    public static final String EXTRA_USER_IDS = "userIds";
-    public static final String EXTRA_KEY_ID = "keyId";
-    public static final String EXTRA_REPLY_TO = "replyTo";
-    public static final String EXTRA_SEND_TO = "sendTo";
-    public static final String EXTRA_SUBJECT = "subject";
-    public static final String EXTRA_ENCRYPTION_KEY_IDS = "encryptionKeyIds";
-    public static final String EXTRA_SELECTION = "selection";
-    public static final String EXTRA_ASCII_ARMOUR = "asciiArmour";
-    public static final String EXTRA_BINARY = "binary";
-    public static final String EXTRA_KEY_SERVERS = "keyServers";
-    public static final String EXTRA_EXPECTED_FINGERPRINT = "org.thialfihar.android.apg.EXPECTED_FINGERPRINT";
-
-    public static final String AUTHORITY = DataProvider.AUTHORITY;
-
-    public static final Uri CONTENT_URI_SECRET_KEY_RINGS = Uri.parse("content://" + AUTHORITY
-            + "/key_rings/secret/");
-    public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_KEY_ID = Uri.parse("content://"
-            + AUTHORITY + "/key_rings/secret/key_id/");
-    public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_EMAILS = Uri.parse("content://"
-            + AUTHORITY + "/key_rings/secret/emails/");
-
-    public static final Uri CONTENT_URI_PUBLIC_KEY_RINGS = Uri.parse("content://" + AUTHORITY
-            + "/key_rings/public/");
-    public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_KEY_ID = Uri.parse("content://"
-            + AUTHORITY + "/key_rings/public/key_id/");
-    public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS = Uri.parse("content://"
-            + AUTHORITY + "/key_rings/public/emails/");
-
-    private static String VERSION = null;
-
-    private static final int[] PREFERRED_SYMMETRIC_ALGORITHMS = new int[] {
-            SymmetricKeyAlgorithmTags.AES_256, SymmetricKeyAlgorithmTags.AES_192,
-            SymmetricKeyAlgorithmTags.AES_128, SymmetricKeyAlgorithmTags.CAST5,
-            SymmetricKeyAlgorithmTags.TRIPLE_DES };
-    private static final int[] PREFERRED_HASH_ALGORITHMS = new int[] { HashAlgorithmTags.SHA1,
-            HashAlgorithmTags.SHA256, HashAlgorithmTags.RIPEMD160 };
-    private static final int[] PREFERRED_COMPRESSION_ALGORITHMS = new int[] {
-            CompressionAlgorithmTags.ZLIB, CompressionAlgorithmTags.BZIP2,
-            CompressionAlgorithmTags.ZIP };
-
-    public static Pattern PGP_MESSAGE = Pattern.compile(
-            ".*?(-----BEGIN PGP MESSAGE-----.*?-----END PGP MESSAGE-----).*", Pattern.DOTALL);
-
-    public static Pattern PGP_SIGNED_MESSAGE = Pattern
-            .compile(
-                    ".*?(-----BEGIN PGP SIGNED MESSAGE-----.*?-----BEGIN PGP SIGNATURE-----.*?-----END PGP SIGNATURE-----).*",
-                    Pattern.DOTALL);
-
-    public static Pattern PGP_PUBLIC_KEY = Pattern.compile(
-            ".*?(-----BEGIN PGP PUBLIC KEY BLOCK-----.*?-----END PGP PUBLIC KEY BLOCK-----).*",
-            Pattern.DOTALL);
-
-    private static HashMap<Long, CachedPassPhrase> mPassPhraseCache = new HashMap<Long, CachedPassPhrase>();
-    private static String mEditPassPhrase = null;
-
-    private static Database mDatabase = null;
-
-    public static class GeneralException extends Exception {
-        static final long serialVersionUID = 0xf812773342L;
-
-        public GeneralException(String message) {
-            super(message);
-        }
-    }
-
-    public static class NoAsymmetricEncryptionException extends Exception {
-        static final long serialVersionUID = 0xf812773343L;
-
-        public NoAsymmetricEncryptionException() {
-            super();
-        }
-    }
-
-    public static void initialize(Context context) {
-        if (mDatabase == null) {
-            mDatabase = new Database(context);
-        }
-    }
-
-    public static Database getDatabase() {
-        return mDatabase;
-    }
-
-    public static void setEditPassPhrase(String passPhrase) {
-        mEditPassPhrase = passPhrase;
-    }
-
-    public static String getEditPassPhrase() {
-        return mEditPassPhrase;
-    }
-
-    public static void setCachedPassPhrase(long keyId, String passPhrase) {
-        mPassPhraseCache.put(keyId, new CachedPassPhrase(new Date().getTime(), passPhrase));
-    }
-
-    public static String getCachedPassPhrase(long keyId) {
-        long realId = keyId;
-        if (realId != Id.key.symmetric) {
-            PGPSecretKeyRing keyRing = getSecretKeyRing(keyId);
-            if (keyRing == null) {
-                return null;
-            }
-            PGPSecretKey masterKey = getMasterKey(keyRing);
-            if (masterKey == null) {
-                return null;
-            }
-            realId = masterKey.getKeyID();
-        }
-        CachedPassPhrase cpp = mPassPhraseCache.get(realId);
-        if (cpp == null) {
-            return null;
-        }
-        // set it again to reset the cache life cycle
-        setCachedPassPhrase(realId, cpp.passPhrase);
-        return cpp.passPhrase;
-    }
-
-    public static int cleanUpCache(int ttl, int initialDelay) {
-        int delay = initialDelay;
-        long realTtl = ttl * 1000;
-        long now = new Date().getTime();
-        Vector<Long> oldKeys = new Vector<Long>();
-        for (Map.Entry<Long, CachedPassPhrase> pair : mPassPhraseCache.entrySet()) {
-            long lived = now - pair.getValue().timestamp;
-            if (lived >= realTtl) {
-                oldKeys.add(pair.getKey());
-            } else {
-                // see, whether the remaining time for this cache entry improves our
-                // check delay
-                long nextCheck = realTtl - lived + 1000;
-                if (nextCheck < delay) {
-                    delay = (int) nextCheck;
-                }
-            }
-        }
-
-        for (long keyId : oldKeys) {
-            mPassPhraseCache.remove(keyId);
-        }
-
-        return delay;
-    }
-
-    public static PGPSecretKey createKey(Context context, int algorithmChoice, int keySize,
-            String passPhrase, PGPSecretKey masterKey) throws NoSuchAlgorithmException,
-            PGPException, NoSuchProviderException, GeneralException,
-            InvalidAlgorithmParameterException {
-
-        if (keySize < 512) {
-            throw new GeneralException(context.getString(R.string.error_keySizeMinimum512bit));
-        }
-
-        Security.addProvider(new BouncyCastleProvider());
-
-        if (passPhrase == null) {
-            passPhrase = "";
-        }
-
-        int algorithm = 0;
-        KeyPairGenerator keyGen = null;
-
-        switch (algorithmChoice) {
-        case Id.choice.algorithm.dsa: {
-            keyGen = KeyPairGenerator.getInstance("DSA", new BouncyCastleProvider());
-            keyGen.initialize(keySize, new SecureRandom());
-            algorithm = PGPPublicKey.DSA;
-            break;
-        }
-
-        case Id.choice.algorithm.elgamal: {
-            if (masterKey == null) {
-                throw new GeneralException(
-                        context.getString(R.string.error_masterKeyMustNotBeElGamal));
-            }
-            keyGen = KeyPairGenerator.getInstance("ELGAMAL", new BouncyCastleProvider());
-            BigInteger p = Primes.getBestPrime(keySize);
-            BigInteger g = new BigInteger("2");
-
-            ElGamalParameterSpec elParams = new ElGamalParameterSpec(p, g);
-
-            keyGen.initialize(elParams);
-            algorithm = PGPPublicKey.ELGAMAL_ENCRYPT;
-            break;
-        }
-
-        case Id.choice.algorithm.rsa: {
-            keyGen = KeyPairGenerator.getInstance("RSA", new BouncyCastleProvider());
-            keyGen.initialize(keySize, new SecureRandom());
-
-            algorithm = PGPPublicKey.RSA_GENERAL;
-            break;
-        }
-
-        default: {
-            throw new GeneralException(context.getString(R.string.error_unknownAlgorithmChoice));
-        }
-        }
-
-        PGPKeyPair keyPair = new PGPKeyPair(algorithm, keyGen.generateKeyPair(), new Date());
-
-        PGPSecretKey secretKey = null;
-        if (masterKey == null) {
-            // enough for now, as we assemble the key again later anyway
-            secretKey = new PGPSecretKey(PGPSignature.DEFAULT_CERTIFICATION, keyPair, "",
-                    PGPEncryptedData.CAST5, passPhrase.toCharArray(), null, null,
-                    new SecureRandom(), new BouncyCastleProvider().getName());
-
-        } else {
-            PGPPublicKey tmpKey = masterKey.getPublicKey();
-            PGPPublicKey masterPublicKey = new PGPPublicKey(tmpKey.getAlgorithm(),
-                    tmpKey.getKey(new BouncyCastleProvider()), tmpKey.getCreationTime());
-            PGPPrivateKey masterPrivateKey = masterKey.extractPrivateKey(passPhrase.toCharArray(),
-                    new BouncyCastleProvider());
-
-            PGPKeyPair masterKeyPair = new PGPKeyPair(masterPublicKey, masterPrivateKey);
-            PGPKeyRingGenerator ringGen = new PGPKeyRingGenerator(
-                    PGPSignature.POSITIVE_CERTIFICATION, masterKeyPair, "", PGPEncryptedData.CAST5,
-                    passPhrase.toCharArray(), null, null, new SecureRandom(),
-                    new BouncyCastleProvider().getName());
-            ringGen.addSubKey(keyPair);
-            PGPSecretKeyRing secKeyRing = ringGen.generateSecretKeyRing();
-            Iterator<PGPSecretKey> it = secKeyRing.getSecretKeys();
-            // first one is the master key
-            it.next();
-            secretKey = it.next();
-        }
-
-        return secretKey;
-    }
-
-    private static long getNumDaysBetween(GregorianCalendar first, GregorianCalendar second) {
-        GregorianCalendar tmp = new GregorianCalendar();
-        tmp.setTime(first.getTime());
-        long numDays = (second.getTimeInMillis() - first.getTimeInMillis()) / 1000 / 86400;
-        tmp.add(Calendar.DAY_OF_MONTH, (int) numDays);
-        while (tmp.before(second)) {
-            tmp.add(Calendar.DAY_OF_MONTH, 1);
-            ++numDays;
-        }
-        return numDays;
-    }
-
-    public static void buildSecretKey(Activity context, SectionView userIdsView,
-            SectionView keysView, String oldPassPhrase, String newPassPhrase,
-            ProgressDialogUpdater progress) throws Apg.GeneralException, NoSuchProviderException,
-            PGPException, NoSuchAlgorithmException, SignatureException, IOException,
-            Database.GeneralException {
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_buildingKey, 0, 100);
-
-        Security.addProvider(new BouncyCastleProvider());
-
-        if (oldPassPhrase == null || oldPassPhrase.equals("")) {
-            oldPassPhrase = "";
-        }
-
-        if (newPassPhrase == null || newPassPhrase.equals("")) {
-            newPassPhrase = "";
-        }
-
-        Vector<String> userIds = new Vector<String>();
-        Vector<PGPSecretKey> keys = new Vector<PGPSecretKey>();
-
-        ViewGroup userIdEditors = userIdsView.getEditors();
-        ViewGroup keyEditors = keysView.getEditors();
-
-        boolean gotMainUserId = false;
-        for (int i = 0; i < userIdEditors.getChildCount(); ++i) {
-            UserIdEditor editor = (UserIdEditor) userIdEditors.getChildAt(i);
-            String userId = null;
-            try {
-                userId = editor.getValue();
-            } catch (UserIdEditor.NoNameException e) {
-                throw new Apg.GeneralException(context.getString(R.string.error_userIdNeedsAName));
-            } catch (UserIdEditor.NoEmailException e) {
-                throw new Apg.GeneralException(
-                        context.getString(R.string.error_userIdNeedsAnEmailAddress));
-            } catch (UserIdEditor.InvalidEmailException e) {
-                throw new Apg.GeneralException("" + e);
-            }
-
-            if (userId.equals("")) {
-                continue;
-            }
-
-            if (editor.isMainUserId()) {
-                userIds.insertElementAt(userId, 0);
-                gotMainUserId = true;
-            } else {
-                userIds.add(userId);
-            }
-        }
-
-        if (userIds.size() == 0) {
-            throw new Apg.GeneralException(context.getString(R.string.error_keyNeedsAUserId));
-        }
-
-        if (!gotMainUserId) {
-            throw new Apg.GeneralException(
-                    context.getString(R.string.error_mainUserIdMustNotBeEmpty));
-        }
-
-        if (keyEditors.getChildCount() == 0) {
-            throw new Apg.GeneralException(context.getString(R.string.error_keyNeedsMasterKey));
-        }
-
-        for (int i = 0; i < keyEditors.getChildCount(); ++i) {
-            KeyEditor editor = (KeyEditor) keyEditors.getChildAt(i);
-            keys.add(editor.getValue());
-        }
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_preparingMasterKey, 10, 100);
-        KeyEditor keyEditor = (KeyEditor) keyEditors.getChildAt(0);
-        int usageId = keyEditor.getUsage();
-        boolean canSign = (usageId == Id.choice.usage.sign_only || usageId == Id.choice.usage.sign_and_encrypt);
-        boolean canEncrypt = (usageId == Id.choice.usage.encrypt_only || usageId == Id.choice.usage.sign_and_encrypt);
-
-        String mainUserId = userIds.get(0);
-
-        PGPSecretKey masterKey = keys.get(0);
-        PGPPublicKey tmpKey = masterKey.getPublicKey();
-        PGPPublicKey masterPublicKey = new PGPPublicKey(tmpKey.getAlgorithm(),
-                tmpKey.getKey(new BouncyCastleProvider()), tmpKey.getCreationTime());
-        PGPPrivateKey masterPrivateKey = masterKey.extractPrivateKey(oldPassPhrase.toCharArray(),
-                new BouncyCastleProvider());
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_certifyingMasterKey, 20, 100);
-        for (int i = 0; i < userIds.size(); ++i) {
-            String userId = userIds.get(i);
-
-            PGPSignatureGenerator sGen = new PGPSignatureGenerator(masterPublicKey.getAlgorithm(),
-                    HashAlgorithmTags.SHA1, new BouncyCastleProvider());
-
-            sGen.initSign(PGPSignature.POSITIVE_CERTIFICATION, masterPrivateKey);
-
-            PGPSignature certification = sGen.generateCertification(userId, masterPublicKey);
-
-            masterPublicKey = PGPPublicKey.addCertification(masterPublicKey, userId, certification);
-        }
-
-        // TODO: cross-certify the master key with every sub key
-
-        PGPKeyPair masterKeyPair = new PGPKeyPair(masterPublicKey, masterPrivateKey);
-
-        PGPSignatureSubpacketGenerator hashedPacketsGen = new PGPSignatureSubpacketGenerator();
-        PGPSignatureSubpacketGenerator unhashedPacketsGen = new PGPSignatureSubpacketGenerator();
-
-        int keyFlags = KeyFlags.CERTIFY_OTHER | KeyFlags.SIGN_DATA;
-        if (canEncrypt) {
-            keyFlags |= KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE;
-        }
-        hashedPacketsGen.setKeyFlags(true, keyFlags);
-
-        hashedPacketsGen.setPreferredSymmetricAlgorithms(true, PREFERRED_SYMMETRIC_ALGORITHMS);
-        hashedPacketsGen.setPreferredHashAlgorithms(true, PREFERRED_HASH_ALGORITHMS);
-        hashedPacketsGen.setPreferredCompressionAlgorithms(true, PREFERRED_COMPRESSION_ALGORITHMS);
-
-        // TODO: this doesn't work quite right yet
-        if (keyEditor.getExpiryDate() != null) {
-            GregorianCalendar creationDate = new GregorianCalendar();
-            creationDate.setTime(getCreationDate(masterKey));
-            GregorianCalendar expiryDate = keyEditor.getExpiryDate();
-            long numDays = getNumDaysBetween(creationDate, expiryDate);
-            if (numDays <= 0) {
-                throw new GeneralException(
-                        context.getString(R.string.error_expiryMustComeAfterCreation));
-            }
-            hashedPacketsGen.setKeyExpirationTime(true, numDays * 86400);
-        }
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_buildingMasterKeyRing, 30, 100);
-        PGPKeyRingGenerator keyGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION,
-                masterKeyPair, mainUserId, PGPEncryptedData.CAST5, newPassPhrase.toCharArray(),
-                hashedPacketsGen.generate(), unhashedPacketsGen.generate(), new SecureRandom(),
-                new BouncyCastleProvider().getName());
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_addingSubKeys, 40, 100);
-        for (int i = 1; i < keys.size(); ++i) {
-            if (progress != null)
-                progress.setProgress(40 + 50 * (i - 1) / (keys.size() - 1), 100);
-            PGPSecretKey subKey = keys.get(i);
-            keyEditor = (KeyEditor) keyEditors.getChildAt(i);
-            PGPPublicKey subPublicKey = subKey.getPublicKey();
-            PGPPrivateKey subPrivateKey = subKey.extractPrivateKey(oldPassPhrase.toCharArray(),
-                    new BouncyCastleProvider());
-            PGPKeyPair subKeyPair = new PGPKeyPair(subPublicKey.getAlgorithm(),
-                    subPublicKey.getKey(new BouncyCastleProvider()), subPrivateKey.getKey(),
-                    subPublicKey.getCreationTime());
-
-            hashedPacketsGen = new PGPSignatureSubpacketGenerator();
-            unhashedPacketsGen = new PGPSignatureSubpacketGenerator();
-
-            keyFlags = 0;
-            usageId = keyEditor.getUsage();
-            canSign = (usageId == Id.choice.usage.sign_only || usageId == Id.choice.usage.sign_and_encrypt);
-            canEncrypt = (usageId == Id.choice.usage.encrypt_only || usageId == Id.choice.usage.sign_and_encrypt);
-            if (canSign) {
-                keyFlags |= KeyFlags.SIGN_DATA;
-            }
-            if (canEncrypt) {
-                keyFlags |= KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE;
-            }
-            hashedPacketsGen.setKeyFlags(true, keyFlags);
-
-            // TODO: this doesn't work quite right yet
-            if (keyEditor.getExpiryDate() != null) {
-                GregorianCalendar creationDate = new GregorianCalendar();
-                creationDate.setTime(getCreationDate(masterKey));
-                GregorianCalendar expiryDate = keyEditor.getExpiryDate();
-                long numDays = getNumDaysBetween(creationDate, expiryDate);
-                if (numDays <= 0) {
-                    throw new GeneralException(
-                            context.getString(R.string.error_expiryMustComeAfterCreation));
-                }
-                hashedPacketsGen.setKeyExpirationTime(true, numDays * 86400);
-            }
-
-            keyGen.addSubKey(subKeyPair, hashedPacketsGen.generate(), unhashedPacketsGen.generate());
-        }
-
-        PGPSecretKeyRing secretKeyRing = keyGen.generateSecretKeyRing();
-        PGPPublicKeyRing publicKeyRing = keyGen.generatePublicKeyRing();
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_savingKeyRing, 90, 100);
-        mDatabase.saveKeyRing(secretKeyRing);
-        mDatabase.saveKeyRing(publicKeyRing);
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-    }
-
-    public static PGPKeyRing decodeKeyRing(InputStream is) throws IOException {
-        InputStream in = PGPUtil.getDecoderStream(is);
-        PGPObjectFactory objectFactory = new PGPObjectFactory(in);
-        Object obj = objectFactory.nextObject();
-
-        if (obj instanceof PGPKeyRing) {
-            return (PGPKeyRing) obj;
-        }
-
-        return null;
-    }
-
-    public static int storeKeyRingInCache(PGPKeyRing keyring) {
-        int status = Integer.MIN_VALUE; // out of bounds value (Id.retrun_value.*)
-        try {
-            if (keyring instanceof PGPSecretKeyRing) {
-                PGPSecretKeyRing secretKeyRing = (PGPSecretKeyRing) keyring;
-                boolean save = true;
-                try {
-                    PGPPrivateKey testKey = secretKeyRing.getSecretKey().extractPrivateKey(
-                            new char[] {}, new BouncyCastleProvider());
-                    if (testKey == null) {
-                        // this is bad, something is very wrong... likely a --export-secret-subkeys
-                        // export
-                        save = false;
-                        status = Id.return_value.bad;
-                    }
-                } catch (PGPException e) {
-                    // all good if this fails, we likely didn't use the right password
-                }
-
-                if (save) {
-                    status = mDatabase.saveKeyRing(secretKeyRing);
-                }
-            } else if (keyring instanceof PGPPublicKeyRing) {
-                PGPPublicKeyRing publicKeyRing = (PGPPublicKeyRing) keyring;
-                status = mDatabase.saveKeyRing(publicKeyRing);
-            }
-        } catch (IOException e) {
-            status = Id.return_value.error;
-        } catch (Database.GeneralException e) {
-            status = Id.return_value.error;
-        }
-
-        return status;
-    }
-
-    public static boolean uploadKeyRingToServer(HkpKeyServer server, PGPPublicKeyRing keyring) {
-        ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        ArmoredOutputStream aos = new ArmoredOutputStream(bos);
-        try {
-            aos.write(keyring.getEncoded());
-            aos.close();
-
-            String armouredKey = bos.toString("UTF-8");
-            server.add(armouredKey);
-
-            return true;
-        } catch (IOException e) {
-            return false;
-        } catch (AddKeyException e) {
-            // TODO: tell the user?
-            return false;
-        } finally {
-            try {
-                bos.close();
-            } catch (IOException e) {
-            }
-        }
-    }
-
-    public static Bundle importKeyRings(Activity context, int type, InputData data,
-            ProgressDialogUpdater progress) throws GeneralException, FileNotFoundException,
-            PGPException, IOException {
-        Bundle returnData = new Bundle();
-
-        if (type == Id.type.secret_key) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_importingSecretKeys, 0, 100);
-        } else {
-            if (progress != null)
-                progress.setProgress(R.string.progress_importingPublicKeys, 0, 100);
-        }
-
-        if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
-            throw new GeneralException(context.getString(R.string.error_externalStorageNotReady));
-        }
-
-        PositionAwareInputStream progressIn = new PositionAwareInputStream(data.getInputStream());
-        // need to have access to the bufferedInput, so we can reuse it for the possible
-        // PGPObject chunks after the first one, e.g. files with several consecutive ASCII
-        // armour blocks
-        BufferedInputStream bufferedInput = new BufferedInputStream(progressIn);
-        int newKeys = 0;
-        int oldKeys = 0;
-        int badKeys = 0;
-        try {
-            PGPKeyRing keyring = decodeKeyRing(bufferedInput);
-            while (keyring != null) {
-                int status = Integer.MIN_VALUE; // out of bounds value
-
-                // if this key is what we expect it to be, save it
-                if ((type == Id.type.secret_key && keyring instanceof PGPSecretKeyRing)
-                        || (type == Id.type.public_key && keyring instanceof PGPPublicKeyRing)) {
-                    status = storeKeyRingInCache(keyring);
-                }
-
-                if (status == Id.return_value.error) {
-                    throw new GeneralException(context.getString(R.string.error_savingKeys));
-                }
-
-                // update the counts to display to the user at the end
-                if (status == Id.return_value.updated) {
-                    ++oldKeys;
-                } else if (status == Id.return_value.ok) {
-                    ++newKeys;
-                } else if (status == Id.return_value.bad) {
-                    ++badKeys;
-                }
-
-                if (progress != null) {
-                    progress.setProgress((int) (100 * progressIn.position() / data.getSize()), 100);
-                }
-                // TODO: needed?
-                // obj = objectFactory.nextObject();
-
-                keyring = decodeKeyRing(bufferedInput);
-            }
-        } catch (EOFException e) {
-            // nothing to do, we are done
-        }
-
-        returnData.putInt("added", newKeys);
-        returnData.putInt("updated", oldKeys);
-        returnData.putInt("bad", badKeys);
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-
-        return returnData;
-    }
-
-    public static Bundle exportKeyRings(Activity context, Vector<Integer> keyRingIds,
-            OutputStream outStream, ProgressDialogUpdater progress) throws GeneralException,
-            FileNotFoundException, PGPException, IOException {
-        Bundle returnData = new Bundle();
-
-        if (keyRingIds.size() == 1) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_exportingKey, 0, 100);
-        } else {
-            if (progress != null)
-                progress.setProgress(R.string.progress_exportingKeys, 0, 100);
-        }
-
-        if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
-            throw new GeneralException(context.getString(R.string.error_externalStorageNotReady));
-        }
-        ArmoredOutputStream out = new ArmoredOutputStream(outStream);
-
-        int numKeys = 0;
-        for (int i = 0; i < keyRingIds.size(); ++i) {
-            if (progress != null)
-                progress.setProgress(i * 100 / keyRingIds.size(), 100);
-            Object obj = mDatabase.getKeyRing(keyRingIds.get(i));
-            PGPPublicKeyRing publicKeyRing;
-            PGPSecretKeyRing secretKeyRing;
-
-            if (obj instanceof PGPSecretKeyRing) {
-                secretKeyRing = (PGPSecretKeyRing) obj;
-                secretKeyRing.encode(out);
-            } else if (obj instanceof PGPPublicKeyRing) {
-                publicKeyRing = (PGPPublicKeyRing) obj;
-                publicKeyRing.encode(out);
-            } else {
-                continue;
-            }
-            ++numKeys;
-        }
-        out.close();
-        returnData.putInt("exported", numKeys);
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-
-        return returnData;
-    }
-
-    public static Date getCreationDate(PGPPublicKey key) {
-        return key.getCreationTime();
-    }
-
-    public static Date getCreationDate(PGPSecretKey key) {
-        return key.getPublicKey().getCreationTime();
-    }
-
-    @SuppressWarnings("unchecked")
-    public static PGPPublicKey getMasterKey(PGPPublicKeyRing keyRing) {
-        if (keyRing == null) {
-            return null;
-        }
-        for (PGPPublicKey key : new IterableIterator<PGPPublicKey>(keyRing.getPublicKeys())) {
-            if (key.isMasterKey()) {
-                return key;
-            }
-        }
-
-        return null;
-    }
-
-    @SuppressWarnings("unchecked")
-    public static PGPSecretKey getMasterKey(PGPSecretKeyRing keyRing) {
-        if (keyRing == null) {
-            return null;
-        }
-        for (PGPSecretKey key : new IterableIterator<PGPSecretKey>(keyRing.getSecretKeys())) {
-            if (key.isMasterKey()) {
-                return key;
-            }
-        }
-
-        return null;
-    }
-
-    @SuppressWarnings("unchecked")
-    public static Vector<PGPPublicKey> getEncryptKeys(PGPPublicKeyRing keyRing) {
-        Vector<PGPPublicKey> encryptKeys = new Vector<PGPPublicKey>();
-
-        for (PGPPublicKey key : new IterableIterator<PGPPublicKey>(keyRing.getPublicKeys())) {
-            if (isEncryptionKey(key)) {
-                encryptKeys.add(key);
-            }
-        }
-
-        return encryptKeys;
-    }
-
-    @SuppressWarnings("unchecked")
-    public static Vector<PGPSecretKey> getSigningKeys(PGPSecretKeyRing keyRing) {
-        Vector<PGPSecretKey> signingKeys = new Vector<PGPSecretKey>();
-
-        for (PGPSecretKey key : new IterableIterator<PGPSecretKey>(keyRing.getSecretKeys())) {
-            if (isSigningKey(key)) {
-                signingKeys.add(key);
-            }
-        }
-
-        return signingKeys;
-    }
-
-    public static Vector<PGPPublicKey> getUsableEncryptKeys(PGPPublicKeyRing keyRing) {
-        Vector<PGPPublicKey> usableKeys = new Vector<PGPPublicKey>();
-        Vector<PGPPublicKey> encryptKeys = getEncryptKeys(keyRing);
-        PGPPublicKey masterKey = null;
-        for (int i = 0; i < encryptKeys.size(); ++i) {
-            PGPPublicKey key = encryptKeys.get(i);
-            if (!isExpired(key)) {
-                if (key.isMasterKey()) {
-                    masterKey = key;
-                } else {
-                    usableKeys.add(key);
-                }
-            }
-        }
-        if (masterKey != null) {
-            usableKeys.add(masterKey);
-        }
-        return usableKeys;
-    }
-
-    public static boolean isExpired(PGPPublicKey key) {
-        Date creationDate = getCreationDate(key);
-        Date expiryDate = getExpiryDate(key);
-        Date now = new Date();
-        if (now.compareTo(creationDate) >= 0
-                && (expiryDate == null || now.compareTo(expiryDate) <= 0)) {
-            return false;
-        }
-        return true;
-    }
-
-    public static boolean isExpired(PGPSecretKey key) {
-        return isExpired(key.getPublicKey());
-    }
-
-    public static Vector<PGPSecretKey> getUsableSigningKeys(PGPSecretKeyRing keyRing) {
-        Vector<PGPSecretKey> usableKeys = new Vector<PGPSecretKey>();
-        Vector<PGPSecretKey> signingKeys = getSigningKeys(keyRing);
-        PGPSecretKey masterKey = null;
-        for (int i = 0; i < signingKeys.size(); ++i) {
-            PGPSecretKey key = signingKeys.get(i);
-            if (key.isMasterKey()) {
-                masterKey = key;
-            } else {
-                usableKeys.add(key);
-            }
-        }
-        if (masterKey != null) {
-            usableKeys.add(masterKey);
-        }
-        return usableKeys;
-    }
-
-    public static Date getExpiryDate(PGPPublicKey key) {
-        Date creationDate = getCreationDate(key);
-        if (key.getValidDays() == 0) {
-            // no expiry
-            return null;
-        }
-        Calendar calendar = GregorianCalendar.getInstance();
-        calendar.setTime(creationDate);
-        calendar.add(Calendar.DATE, key.getValidDays());
-        Date expiryDate = calendar.getTime();
-
-        return expiryDate;
-    }
-
-    public static Date getExpiryDate(PGPSecretKey key) {
-        return getExpiryDate(key.getPublicKey());
-    }
-
-    public static PGPPublicKey getEncryptPublicKey(long masterKeyId) {
-        PGPPublicKeyRing keyRing = getPublicKeyRing(masterKeyId);
-        if (keyRing == null) {
-            return null;
-        }
-        Vector<PGPPublicKey> encryptKeys = getUsableEncryptKeys(keyRing);
-        if (encryptKeys.size() == 0) {
-            return null;
-        }
-        return encryptKeys.get(0);
-    }
-
-    public static PGPSecretKey getSigningKey(long masterKeyId) {
-        PGPSecretKeyRing keyRing = getSecretKeyRing(masterKeyId);
-        if (keyRing == null) {
-            return null;
-        }
-        Vector<PGPSecretKey> signingKeys = getUsableSigningKeys(keyRing);
-        if (signingKeys.size() == 0) {
-            return null;
-        }
-        return signingKeys.get(0);
-    }
-
-    @SuppressWarnings("unchecked")
-    public static String getMainUserId(PGPPublicKey key) {
-        for (String userId : new IterableIterator<String>(key.getUserIDs())) {
-            return userId;
-        }
-        return null;
-    }
-
-    @SuppressWarnings("unchecked")
-    public static String getMainUserId(PGPSecretKey key) {
-        for (String userId : new IterableIterator<String>(key.getUserIDs())) {
-            return userId;
-        }
-        return null;
-    }
-
-    public static String getMainUserIdSafe(Context context, PGPPublicKey key) {
-        String userId = getMainUserId(key);
-        if (userId == null) {
-            userId = context.getResources().getString(R.string.unknownUserId);
-        }
-        return userId;
-    }
-
-    public static String getMainUserIdSafe(Context context, PGPSecretKey key) {
-        String userId = getMainUserId(key);
-        if (userId == null) {
-            userId = context.getResources().getString(R.string.unknownUserId);
-        }
-        return userId;
-    }
-
-    @SuppressWarnings("unchecked")
-    public static boolean isEncryptionKey(PGPPublicKey key) {
-        if (!key.isEncryptionKey()) {
-            return false;
-        }
-
-        if (key.getVersion() <= 3) {
-            // this must be true now
-            return key.isEncryptionKey();
-        }
-
-        // special cases
-        if (key.getAlgorithm() == PGPPublicKey.ELGAMAL_ENCRYPT) {
-            return true;
-        }
-
-        if (key.getAlgorithm() == PGPPublicKey.RSA_ENCRYPT) {
-            return true;
-        }
-
-        for (PGPSignature sig : new IterableIterator<PGPSignature>(key.getSignatures())) {
-            if (key.isMasterKey() && sig.getKeyID() != key.getKeyID()) {
-                continue;
-            }
-            PGPSignatureSubpacketVector hashed = sig.getHashedSubPackets();
-
-            if (hashed != null
-                    && (hashed.getKeyFlags() & (KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE)) != 0) {
-                return true;
-            }
-
-            PGPSignatureSubpacketVector unhashed = sig.getUnhashedSubPackets();
-
-            if (unhashed != null
-                    && (unhashed.getKeyFlags() & (KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE)) != 0) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    public static boolean isEncryptionKey(PGPSecretKey key) {
-        return isEncryptionKey(key.getPublicKey());
-    }
-
-    @SuppressWarnings("unchecked")
-    public static boolean isSigningKey(PGPPublicKey key) {
-        if (key.getVersion() <= 3) {
-            return true;
-        }
-
-        // special case
-        if (key.getAlgorithm() == PGPPublicKey.RSA_SIGN) {
-            return true;
-        }
-
-        for (PGPSignature sig : new IterableIterator<PGPSignature>(key.getSignatures())) {
-            if (key.isMasterKey() && sig.getKeyID() != key.getKeyID()) {
-                continue;
-            }
-            PGPSignatureSubpacketVector hashed = sig.getHashedSubPackets();
-
-            if (hashed != null && (hashed.getKeyFlags() & KeyFlags.SIGN_DATA) != 0) {
-                return true;
-            }
-
-            PGPSignatureSubpacketVector unhashed = sig.getUnhashedSubPackets();
-
-            if (unhashed != null && (unhashed.getKeyFlags() & KeyFlags.SIGN_DATA) != 0) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    public static boolean isSigningKey(PGPSecretKey key) {
-        return isSigningKey(key.getPublicKey());
-    }
-
-    public static String getAlgorithmInfo(PGPPublicKey key) {
-        return getAlgorithmInfo(key.getAlgorithm(), key.getBitStrength());
-    }
-
-    public static String getAlgorithmInfo(PGPSecretKey key) {
-        return getAlgorithmInfo(key.getPublicKey());
-    }
-
-    public static String getAlgorithmInfo(int algorithm, int keySize) {
-        String algorithmStr = null;
-
-        switch (algorithm) {
-        case PGPPublicKey.RSA_ENCRYPT:
-        case PGPPublicKey.RSA_GENERAL:
-        case PGPPublicKey.RSA_SIGN: {
-            algorithmStr = "RSA";
-            break;
-        }
-
-        case PGPPublicKey.DSA: {
-            algorithmStr = "DSA";
-            break;
-        }
-
-        case PGPPublicKey.ELGAMAL_ENCRYPT:
-        case PGPPublicKey.ELGAMAL_GENERAL: {
-            algorithmStr = "ElGamal";
-            break;
-        }
-
-        default: {
-            algorithmStr = "???";
-            break;
-        }
-        }
-        return algorithmStr + ", " + keySize + "bit";
-    }
-
-    public static String convertToHex(byte[] fp) {
-        String fingerPrint = "";
-        for (int i = 0; i < fp.length; ++i) {
-            if (i != 0 && i % 10 == 0) {
-                fingerPrint += "  ";
-            } else if (i != 0 && i % 2 == 0) {
-                fingerPrint += " ";
-            }
-            String chunk = Integer.toHexString((fp[i] + 256) % 256).toUpperCase();
-            while (chunk.length() < 2) {
-                chunk = "0" + chunk;
-            }
-            fingerPrint += chunk;
-        }
-
-        return fingerPrint;
-
-    }
-
-    public static String getFingerPrint(long keyId) {
-        PGPPublicKey key = Apg.getPublicKey(keyId);
-        if (key == null) {
-            PGPSecretKey secretKey = Apg.getSecretKey(keyId);
-            if (secretKey == null) {
-                return "";
-            }
-            key = secretKey.getPublicKey();
-        }
-
-        return convertToHex(key.getFingerprint());
-    }
-
-    public static String getSmallFingerPrint(long keyId) {
-        String fingerPrint = Long.toHexString(keyId & 0xffffffffL).toUpperCase();
-        while (fingerPrint.length() < 8) {
-            fingerPrint = "0" + fingerPrint;
-        }
-        return fingerPrint;
-    }
-
-    public static String keyToHex(long keyId) {
-        return getSmallFingerPrint(keyId >> 32) + getSmallFingerPrint(keyId);
-    }
-
-    public static long keyFromHex(String data) {
-        int len = data.length();
-        String s2 = data.substring(len - 8);
-        String s1 = data.substring(0, len - 8);
-        return (Long.parseLong(s1, 16) << 32) | Long.parseLong(s2, 16);
-    }
-
-    public static void deleteKey(int keyRingId) {
-        mDatabase.deleteKeyRing(keyRingId);
-    }
-
-    public static PGPKeyRing getKeyRing(int keyRingId) {
-        return (PGPKeyRing) mDatabase.getKeyRing(keyRingId);
-    }
-
-    public static PGPSecretKeyRing getSecretKeyRing(long keyId) {
-        byte[] data = mDatabase.getKeyRingDataFromKeyId(Id.database.type_secret, keyId);
-        if (data == null) {
-            return null;
-        }
-        try {
-            return new PGPSecretKeyRing(data);
-        } catch (IOException e) {
-            // no good way to handle this, return null
-            // TODO: some info?
-        } catch (PGPException e) {
-            // no good way to handle this, return null
-            // TODO: some info?
-        }
-        return null;
-    }
-
-    public static PGPPublicKeyRing getPublicKeyRing(long keyId) {
-        byte[] data = mDatabase.getKeyRingDataFromKeyId(Id.database.type_public, keyId);
-        if (data == null) {
-            return null;
-        }
-        try {
-            return new PGPPublicKeyRing(data);
-        } catch (IOException e) {
-            // no good way to handle this, return null
-            // TODO: some info?
-        }
-        return null;
-    }
-
-    public static PGPSecretKey getSecretKey(long keyId) {
-        PGPSecretKeyRing keyRing = getSecretKeyRing(keyId);
-        if (keyRing == null) {
-            return null;
-        }
-        return keyRing.getSecretKey(keyId);
-    }
-
-    public static PGPPublicKey getPublicKey(long keyId) {
-        PGPPublicKeyRing keyRing = getPublicKeyRing(keyId);
-        if (keyRing == null) {
-            return null;
-        }
-
-        return keyRing.getPublicKey(keyId);
-    }
-
-    public static Vector<Integer> getKeyRingIds(int type) {
-        SQLiteDatabase db = mDatabase.db();
-        Vector<Integer> keyIds = new Vector<Integer>();
-        Cursor c = db.query(KeyRings.TABLE_NAME, new String[] { KeyRings._ID }, KeyRings.TYPE
-                + " = ?", new String[] { "" + type }, null, null, null);
-        if (c != null && c.moveToFirst()) {
-            do {
-                keyIds.add(c.getInt(0));
-            } while (c.moveToNext());
-        }
-
-        if (c != null) {
-            c.close();
-        }
-
-        return keyIds;
-    }
-
-    public static String getMainUserId(long keyId, int type) {
-        SQLiteDatabase db = mDatabase.db();
-        Cursor c = db.query(Keys.TABLE_NAME + " INNER JOIN " + KeyRings.TABLE_NAME + " ON ("
-                + KeyRings.TABLE_NAME + "." + KeyRings._ID + " = " + Keys.TABLE_NAME + "."
-                + Keys.KEY_RING_ID + ") " + " INNER JOIN " + Keys.TABLE_NAME + " AS masterKey ON ("
-                + KeyRings.TABLE_NAME + "." + KeyRings._ID + " = " + "masterKey."
-                + Keys.KEY_RING_ID + " AND " + "masterKey." + Keys.IS_MASTER_KEY + " = '1') "
-                + " INNER JOIN " + UserIds.TABLE_NAME + " ON (" + UserIds.TABLE_NAME + "."
-                + UserIds.KEY_ID + " = " + "masterKey." + Keys._ID + " AND " + UserIds.TABLE_NAME
-                + "." + UserIds.RANK + " = '0')", new String[] { UserIds.USER_ID }, Keys.TABLE_NAME
-                + "." + Keys.KEY_ID + " = ? AND " + KeyRings.TABLE_NAME + "." + KeyRings.TYPE
-                + " = ?", new String[] { "" + keyId, "" + type, }, null, null, null);
-        String userId = "";
-        if (c != null && c.moveToFirst()) {
-            do {
-                userId = c.getString(0);
-            } while (c.moveToNext());
-        }
-
-        if (c != null) {
-            c.close();
-        }
-
-        return userId;
-    }
-
-    public static void encrypt(Context context, InputData data, OutputStream outStream,
-            boolean armored, long encryptionKeyIds[], long signatureKeyId,
-            String signaturePassPhrase, ProgressDialogUpdater progress, int symmetricAlgorithm,
-            int hashAlgorithm, int compression, boolean forceV3Signature, String passPhrase)
-            throws IOException, GeneralException, PGPException, NoSuchProviderException,
-            NoSuchAlgorithmException, SignatureException {
-        Security.addProvider(new BouncyCastleProvider());
-
-        if (encryptionKeyIds == null) {
-            encryptionKeyIds = new long[0];
-        }
-
-        ArmoredOutputStream armorOut = null;
-        OutputStream out = null;
-        OutputStream encryptOut = null;
-        if (armored) {
-            armorOut = new ArmoredOutputStream(outStream);
-            armorOut.setHeader("Version", getFullVersion(context));
-            out = armorOut;
-        } else {
-            out = outStream;
-        }
-        PGPSecretKey signingKey = null;
-        PGPSecretKeyRing signingKeyRing = null;
-        PGPPrivateKey signaturePrivateKey = null;
-
-        if (encryptionKeyIds.length == 0 && passPhrase == null) {
-            throw new GeneralException(
-                    context.getString(R.string.error_noEncryptionKeysOrPassPhrase));
-        }
-
-        if (signatureKeyId != 0) {
-            signingKeyRing = getSecretKeyRing(signatureKeyId);
-            signingKey = getSigningKey(signatureKeyId);
-            if (signingKey == null) {
-                throw new GeneralException(context.getString(R.string.error_signatureFailed));
-            }
-
-            if (signaturePassPhrase == null) {
-                throw new GeneralException(context.getString(R.string.error_noSignaturePassPhrase));
-            }
-            if (progress != null)
-                progress.setProgress(R.string.progress_extractingSignatureKey, 0, 100);
-            signaturePrivateKey = signingKey.extractPrivateKey(signaturePassPhrase.toCharArray(),
-                    new BouncyCastleProvider());
-            if (signaturePrivateKey == null) {
-                throw new GeneralException(
-                        context.getString(R.string.error_couldNotExtractPrivateKey));
-            }
-        }
-        if (progress != null)
-            progress.setProgress(R.string.progress_preparingStreams, 5, 100);
-
-        // encrypt and compress input file content
-        PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(symmetricAlgorithm, true,
-                new SecureRandom(), new BouncyCastleProvider());
-
-        if (encryptionKeyIds.length == 0) {
-            // symmetric encryption
-            cPk.addMethod(passPhrase.toCharArray());
-        }
-        for (int i = 0; i < encryptionKeyIds.length; ++i) {
-            PGPPublicKey key = getEncryptPublicKey(encryptionKeyIds[i]);
-            if (key != null) {
-                cPk.addMethod(key);
-            }
-        }
-        encryptOut = cPk.open(out, new byte[1 << 16]);
-
-        PGPSignatureGenerator signatureGenerator = null;
-        PGPV3SignatureGenerator signatureV3Generator = null;
-
-        if (signatureKeyId != 0) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_preparingSignature, 10, 100);
-            if (forceV3Signature) {
-                signatureV3Generator = new PGPV3SignatureGenerator(signingKey.getPublicKey()
-                        .getAlgorithm(), hashAlgorithm, new BouncyCastleProvider());
-                signatureV3Generator.initSign(PGPSignature.BINARY_DOCUMENT, signaturePrivateKey);
-            } else {
-                signatureGenerator = new PGPSignatureGenerator(signingKey.getPublicKey()
-                        .getAlgorithm(), hashAlgorithm, new BouncyCastleProvider());
-                signatureGenerator.initSign(PGPSignature.BINARY_DOCUMENT, signaturePrivateKey);
-
-                String userId = getMainUserId(getMasterKey(signingKeyRing));
-                PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
-                spGen.setSignerUserID(false, userId);
-                signatureGenerator.setHashedSubpackets(spGen.generate());
-            }
-        }
-
-        PGPCompressedDataGenerator compressGen = null;
-        BCPGOutputStream bcpgOut = null;
-        if (compression == Id.choice.compression.none) {
-            bcpgOut = new BCPGOutputStream(encryptOut);
-        } else {
-            compressGen = new PGPCompressedDataGenerator(compression);
-            bcpgOut = new BCPGOutputStream(compressGen.open(encryptOut));
-        }
-        if (signatureKeyId != 0) {
-            if (forceV3Signature) {
-                signatureV3Generator.generateOnePassVersion(false).encode(bcpgOut);
-            } else {
-                signatureGenerator.generateOnePassVersion(false).encode(bcpgOut);
-            }
-        }
-
-        PGPLiteralDataGenerator literalGen = new PGPLiteralDataGenerator();
-        // file name not needed, so empty string
-        OutputStream pOut = literalGen.open(bcpgOut, PGPLiteralData.BINARY, "", new Date(),
-                new byte[1 << 16]);
-        if (progress != null)
-            progress.setProgress(R.string.progress_encrypting, 20, 100);
-
-        long done = 0;
-        int n = 0;
-        byte[] buffer = new byte[1 << 16];
-        InputStream in = data.getInputStream();
-        while ((n = in.read(buffer)) > 0) {
-            pOut.write(buffer, 0, n);
-            if (signatureKeyId != 0) {
-                if (forceV3Signature) {
-                    signatureV3Generator.update(buffer, 0, n);
-                } else {
-                    signatureGenerator.update(buffer, 0, n);
-                }
-            }
-            done += n;
-            if (data.getSize() != 0) {
-                if (progress != null)
-                    progress.setProgress((int) (20 + (95 - 20) * done / data.getSize()), 100);
-            }
-        }
-
-        literalGen.close();
-
-        if (signatureKeyId != 0) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_generatingSignature, 95, 100);
-            if (forceV3Signature) {
-                signatureV3Generator.generate().encode(pOut);
-            } else {
-                signatureGenerator.generate().encode(pOut);
-            }
-        }
-        if (compressGen != null) {
-            compressGen.close();
-        }
-        encryptOut.close();
-        if (armored) {
-            armorOut.close();
-        }
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-    }
-
-    public static void signText(Context context, InputData data, OutputStream outStream,
-            long signatureKeyId, String signaturePassPhrase, int hashAlgorithm,
-            boolean forceV3Signature, ProgressDialogUpdater progress) throws GeneralException,
-            PGPException, IOException, NoSuchAlgorithmException, SignatureException {
-        Security.addProvider(new BouncyCastleProvider());
-
-        ArmoredOutputStream armorOut = new ArmoredOutputStream(outStream);
-        armorOut.setHeader("Version", getFullVersion(context));
-
-        PGPSecretKey signingKey = null;
-        PGPSecretKeyRing signingKeyRing = null;
-        PGPPrivateKey signaturePrivateKey = null;
-
-        if (signatureKeyId == 0) {
-            throw new GeneralException(context.getString(R.string.error_noSignatureKey));
-        }
-
-        signingKeyRing = getSecretKeyRing(signatureKeyId);
-        signingKey = getSigningKey(signatureKeyId);
-        if (signingKey == null) {
-            throw new GeneralException(context.getString(R.string.error_signatureFailed));
-        }
-
-        if (signaturePassPhrase == null) {
-            throw new GeneralException(context.getString(R.string.error_noSignaturePassPhrase));
-        }
-        signaturePrivateKey = signingKey.extractPrivateKey(signaturePassPhrase.toCharArray(),
-                new BouncyCastleProvider());
-        if (signaturePrivateKey == null) {
-            throw new GeneralException(context.getString(R.string.error_couldNotExtractPrivateKey));
-        }
-        if (progress != null)
-            progress.setProgress(R.string.progress_preparingStreams, 0, 100);
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_preparingSignature, 30, 100);
-
-        PGPSignatureGenerator signatureGenerator = null;
-        PGPV3SignatureGenerator signatureV3Generator = null;
-
-        if (forceV3Signature) {
-            signatureV3Generator = new PGPV3SignatureGenerator(signingKey.getPublicKey()
-                    .getAlgorithm(), hashAlgorithm, new BouncyCastleProvider());
-            signatureV3Generator
-                    .initSign(PGPSignature.CANONICAL_TEXT_DOCUMENT, signaturePrivateKey);
-        } else {
-            signatureGenerator = new PGPSignatureGenerator(
-                    signingKey.getPublicKey().getAlgorithm(), hashAlgorithm,
-                    new BouncyCastleProvider());
-            signatureGenerator.initSign(PGPSignature.CANONICAL_TEXT_DOCUMENT, signaturePrivateKey);
-
-            PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
-            String userId = getMainUserId(getMasterKey(signingKeyRing));
-            spGen.setSignerUserID(false, userId);
-            signatureGenerator.setHashedSubpackets(spGen.generate());
-        }
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_signing, 40, 100);
-
-        armorOut.beginClearText(hashAlgorithm);
-
-        InputStream inStream = data.getInputStream();
-        final BufferedReader reader = new BufferedReader(new InputStreamReader(inStream));
-
-        final byte[] newline = "\r\n".getBytes("UTF-8");
-
-        if (forceV3Signature) {
-            processLine(reader.readLine(), armorOut, signatureV3Generator);
-        } else {
-            processLine(reader.readLine(), armorOut, signatureGenerator);
-        }
-
-        while (true) {
-            final String line = reader.readLine();
-
-            if (line == null) {
-                armorOut.write(newline);
-                break;
-            }
-
-            armorOut.write(newline);
-            if (forceV3Signature) {
-                signatureV3Generator.update(newline);
-                processLine(line, armorOut, signatureV3Generator);
-            } else {
-                signatureGenerator.update(newline);
-                processLine(line, armorOut, signatureGenerator);
-            }
-        }
-
-        armorOut.endClearText();
-
-        BCPGOutputStream bOut = new BCPGOutputStream(armorOut);
-        if (forceV3Signature) {
-            signatureV3Generator.generate().encode(bOut);
-        } else {
-            signatureGenerator.generate().encode(bOut);
-        }
-        armorOut.close();
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-    }
-
-    public static void generateSignature(Context context, InputData data, OutputStream outStream,
-            boolean armored, boolean binary, long signatureKeyId, String signaturePassPhrase,
-            int hashAlgorithm, boolean forceV3Signature, ProgressDialogUpdater progress)
-            throws GeneralException, PGPException, IOException, NoSuchAlgorithmException,
-            SignatureException {
-        Security.addProvider(new BouncyCastleProvider());
-
-        ArmoredOutputStream armorOut = null;
-        OutputStream out = null;
-        if (armored) {
-            armorOut = new ArmoredOutputStream(outStream);
-            armorOut.setHeader("Version", getFullVersion(context));
-            out = armorOut;
-        } else {
-            out = outStream;
-        }
-
-        PGPSecretKey signingKey = null;
-        PGPSecretKeyRing signingKeyRing = null;
-        PGPPrivateKey signaturePrivateKey = null;
-
-        if (signatureKeyId == 0) {
-            throw new GeneralException(context.getString(R.string.error_noSignatureKey));
-        }
-
-        signingKeyRing = getSecretKeyRing(signatureKeyId);
-        signingKey = getSigningKey(signatureKeyId);
-        if (signingKey == null) {
-            throw new GeneralException(context.getString(R.string.error_signatureFailed));
-        }
-
-        if (signaturePassPhrase == null) {
-            throw new GeneralException(context.getString(R.string.error_noSignaturePassPhrase));
-        }
-        signaturePrivateKey = signingKey.extractPrivateKey(signaturePassPhrase.toCharArray(),
-                new BouncyCastleProvider());
-        if (signaturePrivateKey == null) {
-            throw new GeneralException(context.getString(R.string.error_couldNotExtractPrivateKey));
-        }
-        if (progress != null)
-            progress.setProgress(R.string.progress_preparingStreams, 0, 100);
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_preparingSignature, 30, 100);
-
-        PGPSignatureGenerator signatureGenerator = null;
-        PGPV3SignatureGenerator signatureV3Generator = null;
-
-        int type = PGPSignature.CANONICAL_TEXT_DOCUMENT;
-        if (binary) {
-            type = PGPSignature.BINARY_DOCUMENT;
-        }
-
-        if (forceV3Signature) {
-            signatureV3Generator = new PGPV3SignatureGenerator(signingKey.getPublicKey()
-                    .getAlgorithm(), hashAlgorithm, new BouncyCastleProvider());
-            signatureV3Generator.initSign(type, signaturePrivateKey);
-        } else {
-            signatureGenerator = new PGPSignatureGenerator(
-                    signingKey.getPublicKey().getAlgorithm(), hashAlgorithm,
-                    new BouncyCastleProvider());
-            signatureGenerator.initSign(type, signaturePrivateKey);
-
-            PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
-            String userId = getMainUserId(getMasterKey(signingKeyRing));
-            spGen.setSignerUserID(false, userId);
-            signatureGenerator.setHashedSubpackets(spGen.generate());
-        }
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_signing, 40, 100);
-
-        InputStream inStream = data.getInputStream();
-        if (binary) {
-            byte[] buffer = new byte[1 << 16];
-            int n = 0;
-            while ((n = inStream.read(buffer)) > 0) {
-                if (forceV3Signature) {
-                    signatureV3Generator.update(buffer, 0, n);
-                } else {
-                    signatureGenerator.update(buffer, 0, n);
-                }
-            }
-        } else {
-            final BufferedReader reader = new BufferedReader(new InputStreamReader(inStream));
-            final byte[] newline = "\r\n".getBytes("UTF-8");
-
-            while (true) {
-                final String line = reader.readLine();
-
-                if (line == null) {
-                    break;
-                }
-
-                if (forceV3Signature) {
-                    processLine(line, null, signatureV3Generator);
-                    signatureV3Generator.update(newline);
-                } else {
-                    processLine(line, null, signatureGenerator);
-                    signatureGenerator.update(newline);
-                }
-            }
-        }
-
-        BCPGOutputStream bOut = new BCPGOutputStream(out);
-        if (forceV3Signature) {
-            signatureV3Generator.generate().encode(bOut);
-        } else {
-            signatureGenerator.generate().encode(bOut);
-        }
-        out.close();
-        outStream.close();
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-    }
-
-    public static long getDecryptionKeyId(Context context, InputData data) throws GeneralException,
-            NoAsymmetricEncryptionException, IOException {
-        InputStream in = PGPUtil.getDecoderStream(data.getInputStream());
-        PGPObjectFactory pgpF = new PGPObjectFactory(in);
-        PGPEncryptedDataList enc;
-        Object o = pgpF.nextObject();
-
-        // the first object might be a PGP marker packet.
-        if (o instanceof PGPEncryptedDataList) {
-            enc = (PGPEncryptedDataList) o;
-        } else {
-            enc = (PGPEncryptedDataList) pgpF.nextObject();
-        }
-
-        if (enc == null) {
-            throw new GeneralException(context.getString(R.string.error_invalidData));
-        }
-
-        // TODO: currently we always only look at the first known key
-        // find the secret key
-        PGPSecretKey secretKey = null;
-        Iterator<?> it = enc.getEncryptedDataObjects();
-        boolean gotAsymmetricEncryption = false;
-        while (it.hasNext()) {
-            Object obj = it.next();
-            if (obj instanceof PGPPublicKeyEncryptedData) {
-                gotAsymmetricEncryption = true;
-                PGPPublicKeyEncryptedData pbe = (PGPPublicKeyEncryptedData) obj;
-                secretKey = getSecretKey(pbe.getKeyID());
-                if (secretKey != null) {
-                    break;
-                }
-            }
-        }
-
-        if (!gotAsymmetricEncryption) {
-            throw new NoAsymmetricEncryptionException();
-        }
-
-        if (secretKey == null) {
-            return Id.key.none;
-        }
-
-        return secretKey.getKeyID();
-    }
-
-    public static boolean hasSymmetricEncryption(Context context, InputData data)
-            throws GeneralException, IOException {
-        InputStream in = PGPUtil.getDecoderStream(data.getInputStream());
-        PGPObjectFactory pgpF = new PGPObjectFactory(in);
-        PGPEncryptedDataList enc;
-        Object o = pgpF.nextObject();
-
-        // the first object might be a PGP marker packet.
-        if (o instanceof PGPEncryptedDataList) {
-            enc = (PGPEncryptedDataList) o;
-        } else {
-            enc = (PGPEncryptedDataList) pgpF.nextObject();
-        }
-
-        if (enc == null) {
-            throw new GeneralException(context.getString(R.string.error_invalidData));
-        }
-
-        Iterator<?> it = enc.getEncryptedDataObjects();
-        while (it.hasNext()) {
-            Object obj = it.next();
-            if (obj instanceof PGPPBEEncryptedData) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    public static Bundle decrypt(Context context, InputData data, OutputStream outStream,
-            String passPhrase, ProgressDialogUpdater progress, boolean assumeSymmetric)
-            throws IOException, GeneralException, PGPException, SignatureException {
-        if (passPhrase == null) {
-            passPhrase = "";
-        }
-        Bundle returnData = new Bundle();
-        InputStream in = PGPUtil.getDecoderStream(data.getInputStream());
-        PGPObjectFactory pgpF = new PGPObjectFactory(in);
-        PGPEncryptedDataList enc;
-        Object o = pgpF.nextObject();
-        long signatureKeyId = 0;
-
-        int currentProgress = 0;
-        if (progress != null)
-            progress.setProgress(R.string.progress_readingData, currentProgress, 100);
-
-        if (o instanceof PGPEncryptedDataList) {
-            enc = (PGPEncryptedDataList) o;
-        } else {
-            enc = (PGPEncryptedDataList) pgpF.nextObject();
-        }
-
-        if (enc == null) {
-            throw new GeneralException(context.getString(R.string.error_invalidData));
-        }
-
-        InputStream clear = null;
-        PGPEncryptedData encryptedData = null;
-
-        currentProgress += 5;
-
-        // TODO: currently we always only look at the first known key or symmetric encryption,
-        // there might be more...
-        if (assumeSymmetric) {
-            PGPPBEEncryptedData pbe = null;
-            Iterator<?> it = enc.getEncryptedDataObjects();
-            // find secret key
-            while (it.hasNext()) {
-                Object obj = it.next();
-                if (obj instanceof PGPPBEEncryptedData) {
-                    pbe = (PGPPBEEncryptedData) obj;
-                    break;
-                }
-            }
-
-            if (pbe == null) {
-                throw new GeneralException(
-                        context.getString(R.string.error_noSymmetricEncryptionPacket));
-            }
-
-            if (progress != null)
-                progress.setProgress(R.string.progress_preparingStreams, currentProgress, 100);
-            clear = pbe.getDataStream(passPhrase.toCharArray(), new BouncyCastleProvider());
-            encryptedData = pbe;
-            currentProgress += 5;
-        } else {
-            if (progress != null)
-                progress.setProgress(R.string.progress_findingKey, currentProgress, 100);
-            PGPPublicKeyEncryptedData pbe = null;
-            PGPSecretKey secretKey = null;
-            Iterator<?> it = enc.getEncryptedDataObjects();
-            // find secret key
-            while (it.hasNext()) {
-                Object obj = it.next();
-                if (obj instanceof PGPPublicKeyEncryptedData) {
-                    PGPPublicKeyEncryptedData encData = (PGPPublicKeyEncryptedData) obj;
-                    secretKey = getSecretKey(encData.getKeyID());
-                    if (secretKey != null) {
-                        pbe = encData;
-                        break;
-                    }
-                }
-            }
-
-            if (secretKey == null) {
-                throw new GeneralException(context.getString(R.string.error_noSecretKeyFound));
-            }
-
-            currentProgress += 5;
-            if (progress != null)
-                progress.setProgress(R.string.progress_extractingKey, currentProgress, 100);
-            PGPPrivateKey privateKey = null;
-            try {
-                privateKey = secretKey.extractPrivateKey(passPhrase.toCharArray(),
-                        new BouncyCastleProvider());
-            } catch (PGPException e) {
-                throw new PGPException(context.getString(R.string.error_wrongPassPhrase));
-            }
-            if (privateKey == null) {
-                throw new GeneralException(
-                        context.getString(R.string.error_couldNotExtractPrivateKey));
-            }
-            currentProgress += 5;
-            if (progress != null)
-                progress.setProgress(R.string.progress_preparingStreams, currentProgress, 100);
-            clear = pbe.getDataStream(privateKey, new BouncyCastleProvider());
-            encryptedData = pbe;
-            currentProgress += 5;
-        }
-
-        PGPObjectFactory plainFact = new PGPObjectFactory(clear);
-        Object dataChunk = plainFact.nextObject();
-        PGPOnePassSignature signature = null;
-        PGPPublicKey signatureKey = null;
-        int signatureIndex = -1;
-
-        if (dataChunk instanceof PGPCompressedData) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_decompressingData, currentProgress, 100);
-            PGPObjectFactory fact = new PGPObjectFactory(
-                    ((PGPCompressedData) dataChunk).getDataStream());
-            dataChunk = fact.nextObject();
-            plainFact = fact;
-            currentProgress += 10;
-        }
-
-        if (dataChunk instanceof PGPOnePassSignatureList) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_processingSignature, currentProgress, 100);
-            returnData.putBoolean(EXTRA_SIGNATURE, true);
-            PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk;
-            for (int i = 0; i < sigList.size(); ++i) {
-                signature = sigList.get(i);
-                signatureKey = getPublicKey(signature.getKeyID());
-                if (signatureKeyId == 0) {
-                    signatureKeyId = signature.getKeyID();
-                }
-                if (signatureKey == null) {
-                    signature = null;
-                } else {
-                    signatureIndex = i;
-                    signatureKeyId = signature.getKeyID();
-                    String userId = null;
-                    PGPPublicKeyRing sigKeyRing = getPublicKeyRing(signatureKeyId);
-                    if (sigKeyRing != null) {
-                        userId = getMainUserId(getMasterKey(sigKeyRing));
-                    }
-                    returnData.putString(EXTRA_SIGNATURE_USER_ID, userId);
-                    break;
-                }
-            }
-
-            returnData.putLong(EXTRA_SIGNATURE_KEY_ID, signatureKeyId);
-
-            if (signature != null) {
-                signature.initVerify(signatureKey, new BouncyCastleProvider());
-            } else {
-                returnData.putBoolean(EXTRA_SIGNATURE_UNKNOWN, true);
-            }
-
-            dataChunk = plainFact.nextObject();
-            currentProgress += 10;
-        }
-
-        if (dataChunk instanceof PGPSignatureList) {
-            dataChunk = plainFact.nextObject();
-        }
-
-        if (dataChunk instanceof PGPLiteralData) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_decrypting, currentProgress, 100);
-            PGPLiteralData literalData = (PGPLiteralData) dataChunk;
-            OutputStream out = outStream;
-
-            byte[] buffer = new byte[1 << 16];
-            InputStream dataIn = literalData.getInputStream();
-
-            int startProgress = currentProgress;
-            int endProgress = 100;
-            if (signature != null) {
-                endProgress = 90;
-            } else if (encryptedData.isIntegrityProtected()) {
-                endProgress = 95;
-            }
-            int n = 0;
-            int done = 0;
-            long startPos = data.getStreamPosition();
-            while ((n = dataIn.read(buffer)) > 0) {
-                out.write(buffer, 0, n);
-                done += n;
-                if (signature != null) {
-                    try {
-                        signature.update(buffer, 0, n);
-                    } catch (SignatureException e) {
-                        returnData.putBoolean(EXTRA_SIGNATURE_SUCCESS, false);
-                        signature = null;
-                    }
-                }
-                // unknown size, but try to at least have a moving, slowing down progress bar
-                currentProgress = startProgress + (endProgress - startProgress) * done
-                        / (done + 100000);
-                if (data.getSize() - startPos == 0) {
-                    currentProgress = endProgress;
-                } else {
-                    currentProgress = (int) (startProgress + (endProgress - startProgress)
-                            * (data.getStreamPosition() - startPos) / (data.getSize() - startPos));
-                }
-                if (progress != null)
-                    progress.setProgress(currentProgress, 100);
-            }
-
-            if (signature != null) {
-                if (progress != null)
-                    progress.setProgress(R.string.progress_verifyingSignature, 90, 100);
-                PGPSignatureList signatureList = (PGPSignatureList) plainFact.nextObject();
-                PGPSignature messageSignature = signatureList.get(signatureIndex);
-                if (signature.verify(messageSignature)) {
-                    returnData.putBoolean(EXTRA_SIGNATURE_SUCCESS, true);
-                } else {
-                    returnData.putBoolean(EXTRA_SIGNATURE_SUCCESS, false);
-                }
-            }
-        }
-
-        // TODO: add integrity somewhere
-        if (encryptedData.isIntegrityProtected()) {
-            if (progress != null)
-                progress.setProgress(R.string.progress_verifyingIntegrity, 95, 100);
-            if (encryptedData.verify()) {
-                // passed
-            } else {
-                // failed
-            }
-        } else {
-            // no integrity check
-        }
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-        return returnData;
-    }
-
-    public static Bundle verifyText(BaseActivity context, InputData data, OutputStream outStream,
-            ProgressDialogUpdater progress) throws IOException, GeneralException, PGPException,
-            SignatureException {
-        Bundle returnData = new Bundle();
-
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        ArmoredInputStream aIn = new ArmoredInputStream(data.getInputStream());
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 0, 100);
-
-        // mostly taken from ClearSignedFileProcessor
-        ByteArrayOutputStream lineOut = new ByteArrayOutputStream();
-        int lookAhead = readInputLine(lineOut, aIn);
-        byte[] lineSep = getLineSeparator();
-
-        byte[] line = lineOut.toByteArray();
-        out.write(line, 0, getLengthWithoutSeparator(line));
-        out.write(lineSep);
-
-        while (lookAhead != -1 && aIn.isClearText()) {
-            lookAhead = readInputLine(lineOut, lookAhead, aIn);
-            line = lineOut.toByteArray();
-            out.write(line, 0, getLengthWithoutSeparator(line));
-            out.write(lineSep);
-        }
-
-        out.close();
-
-        byte[] clearText = out.toByteArray();
-        outStream.write(clearText);
-
-        returnData.putBoolean(EXTRA_SIGNATURE, true);
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_processingSignature, 60, 100);
-        PGPObjectFactory pgpFact = new PGPObjectFactory(aIn);
-
-        PGPSignatureList sigList = (PGPSignatureList) pgpFact.nextObject();
-        if (sigList == null) {
-            throw new GeneralException(context.getString(R.string.error_corruptData));
-        }
-        PGPSignature signature = null;
-        long signatureKeyId = 0;
-        PGPPublicKey signatureKey = null;
-        for (int i = 0; i < sigList.size(); ++i) {
-            signature = sigList.get(i);
-            signatureKey = getPublicKey(signature.getKeyID());
-            if (signatureKeyId == 0) {
-                signatureKeyId = signature.getKeyID();
-            }
-            if (signatureKey == null) {
-                Bundle pauseData = new Bundle();
-                pauseData.putInt(Constants.extras.STATUS, Id.message.unknown_signature_key);
-                pauseData.putLong(Constants.extras.KEY_ID, signatureKeyId);
-                Message msg = new Message();
-                msg.setData(pauseData);
-                context.sendMessage(msg);
-                // pause here
-                context.getRunningThread().pause();
-                // see whether the key was found in the meantime
-                signatureKey = getPublicKey(signature.getKeyID());
-            }
-
-            if (signatureKey == null) {
-                signature = null;
-            } else {
-                signatureKeyId = signature.getKeyID();
-                String userId = null;
-                PGPPublicKeyRing sigKeyRing = getPublicKeyRing(signatureKeyId);
-                if (sigKeyRing != null) {
-                    userId = getMainUserId(getMasterKey(sigKeyRing));
-                }
-                returnData.putString(EXTRA_SIGNATURE_USER_ID, userId);
-                break;
-            }
-        }
-
-        returnData.putLong(EXTRA_SIGNATURE_KEY_ID, signatureKeyId);
-
-        if (signature == null) {
-            returnData.putBoolean(EXTRA_SIGNATURE_UNKNOWN, true);
-            if (progress != null)
-                progress.setProgress(R.string.progress_done, 100, 100);
-            return returnData;
-        }
-
-        signature.initVerify(signatureKey, new BouncyCastleProvider());
-
-        InputStream sigIn = new BufferedInputStream(new ByteArrayInputStream(clearText));
-
-        lookAhead = readInputLine(lineOut, sigIn);
-
-        processLine(signature, lineOut.toByteArray());
-
-        if (lookAhead != -1) {
-            do {
-                lookAhead = readInputLine(lineOut, lookAhead, sigIn);
-
-                signature.update((byte) '\r');
-                signature.update((byte) '\n');
-
-                processLine(signature, lineOut.toByteArray());
-            } while (lookAhead != -1);
-        }
-
-        returnData.putBoolean(EXTRA_SIGNATURE_SUCCESS, signature.verify());
-
-        if (progress != null)
-            progress.setProgress(R.string.progress_done, 100, 100);
-        return returnData;
-    }
-
-    public static int getStreamContent(Context context, InputStream inStream) throws IOException {
-        InputStream in = PGPUtil.getDecoderStream(inStream);
-        PGPObjectFactory pgpF = new PGPObjectFactory(in);
-        Object object = pgpF.nextObject();
-        while (object != null) {
-            if (object instanceof PGPPublicKeyRing || object instanceof PGPSecretKeyRing) {
-                return Id.content.keys;
-            } else if (object instanceof PGPEncryptedDataList) {
-                return Id.content.encrypted_data;
-            }
-            object = pgpF.nextObject();
-        }
-
-        return Id.content.unknown;
-    }
-
-    private static void processLine(final String pLine, final ArmoredOutputStream pArmoredOutput,
-            final PGPSignatureGenerator pSignatureGenerator) throws IOException, SignatureException {
-
-        if (pLine == null) {
-            return;
-        }
-
-        final char[] chars = pLine.toCharArray();
-        int len = chars.length;
-
-        while (len > 0) {
-            if (!Character.isWhitespace(chars[len - 1])) {
-                break;
-            }
-            len--;
-        }
-
-        final byte[] data = pLine.substring(0, len).getBytes("UTF-8");
-
-        if (pArmoredOutput != null) {
-            pArmoredOutput.write(data);
-        }
-        pSignatureGenerator.update(data);
-    }
-
-    private static void processLine(final String pLine, final ArmoredOutputStream pArmoredOutput,
-            final PGPV3SignatureGenerator pSignatureGenerator) throws IOException,
-            SignatureException {
-
-        if (pLine == null) {
-            return;
-        }
-
-        final char[] chars = pLine.toCharArray();
-        int len = chars.length;
-
-        while (len > 0) {
-            if (!Character.isWhitespace(chars[len - 1])) {
-                break;
-            }
-            len--;
-        }
-
-        final byte[] data = pLine.substring(0, len).getBytes("UTF-8");
-
-        if (pArmoredOutput != null) {
-            pArmoredOutput.write(data);
-        }
-        pSignatureGenerator.update(data);
-    }
-
-    // taken from ClearSignedFileProcessor in BC
-    private static void processLine(PGPSignature sig, byte[] line) throws SignatureException,
-            IOException {
-        int length = getLengthWithoutWhiteSpace(line);
-        if (length > 0) {
-            sig.update(line, 0, length);
-        }
-    }
-
-    private static int readInputLine(ByteArrayOutputStream bOut, InputStream fIn)
-            throws IOException {
-        bOut.reset();
-
-        int lookAhead = -1;
-        int ch;
-
-        while ((ch = fIn.read()) >= 0) {
-            bOut.write(ch);
-            if (ch == '\r' || ch == '\n') {
-                lookAhead = readPassedEOL(bOut, ch, fIn);
-                break;
-            }
-        }
-
-        return lookAhead;
-    }
-
-    private static int readInputLine(ByteArrayOutputStream bOut, int lookAhead, InputStream fIn)
-            throws IOException {
-        bOut.reset();
-
-        int ch = lookAhead;
-
-        do {
-            bOut.write(ch);
-            if (ch == '\r' || ch == '\n') {
-                lookAhead = readPassedEOL(bOut, ch, fIn);
-                break;
-            }
-        } while ((ch = fIn.read()) >= 0);
-
-        if (ch < 0) {
-            lookAhead = -1;
-        }
-
-        return lookAhead;
-    }
-
-    private static int readPassedEOL(ByteArrayOutputStream bOut, int lastCh, InputStream fIn)
-            throws IOException {
-        int lookAhead = fIn.read();
-
-        if (lastCh == '\r' && lookAhead == '\n') {
-            bOut.write(lookAhead);
-            lookAhead = fIn.read();
-        }
-
-        return lookAhead;
-    }
-
-    private static int getLengthWithoutSeparator(byte[] line) {
-        int end = line.length - 1;
-
-        while (end >= 0 && isLineEnding(line[end])) {
-            end--;
-        }
-
-        return end + 1;
-    }
-
-    private static boolean isLineEnding(byte b) {
-        return b == '\r' || b == '\n';
-    }
-
-    private static int getLengthWithoutWhiteSpace(byte[] line) {
-        int end = line.length - 1;
-
-        while (end >= 0 && isWhiteSpace(line[end])) {
-            end--;
-        }
-
-        return end + 1;
-    }
-
-    private static boolean isWhiteSpace(byte b) {
-        return b == '\r' || b == '\n' || b == '\t' || b == ' ';
-    }
-
-    private static byte[] getLineSeparator() {
-        String nl = System.getProperty("line.separator");
-        byte[] nlBytes = new byte[nl.length()];
-
-        for (int i = 0; i != nlBytes.length; i++) {
-            nlBytes[i] = (byte) nl.charAt(i);
-        }
-
-        return nlBytes;
-    }
-
-    public static boolean isReleaseVersion(Context context) {
-        try {
-            PackageInfo pi = context.getPackageManager().getPackageInfo(mApgPackageName, 0);
-            if (pi.versionCode % 100 == 99) {
-                return true;
-            } else {
-                return false;
-            }
-        } catch (NameNotFoundException e) {
-            // unpossible!
-            return false;
-        }
-    }
-
-    public static String getVersion(Context context) {
-        if (VERSION != null) {
-            return VERSION;
-        }
-        try {
-            PackageInfo pi = context.getPackageManager().getPackageInfo(mApgPackageName, 0);
-            VERSION = pi.versionName;
-            return VERSION;
-        } catch (NameNotFoundException e) {
-            // unpossible!
-            return "0.0.0";
-        }
-    }
-
-    public static String getFullVersion(Context context) {
-        return "APG v" + getVersion(context);
-    }
-
-    public static String generateRandomString(int length) {
-        SecureRandom random = new SecureRandom();
-        /*
-         * try { random = SecureRandom.getInstance("SHA1PRNG", new BouncyCastleProvider()); } catch
-         * (NoSuchAlgorithmException e) { // TODO: need to handle this case somehow return null; }
-         */
-        byte bytes[] = new byte[length];
-        random.nextBytes(bytes);
-        String result = "";
-        for (int i = 0; i < length; ++i) {
-            int v = (bytes[i] + 256) % 64;
-            if (v < 10) {
-                result += (char) ('0' + v);
-            } else if (v < 36) {
-                result += (char) ('A' + v - 10);
-            } else if (v < 62) {
-                result += (char) ('a' + v - 36);
-            } else if (v == 62) {
-                result += '_';
-            } else if (v == 63) {
-                result += '.';
-            }
-        }
-        return result;
-    }
-
-    static long getLengthOfStream(InputStream in) throws IOException {
-        long size = 0;
-        long n = 0;
-        byte dummy[] = new byte[0x10000];
-        while ((n = in.read(dummy)) > 0) {
-            size += n;
-        }
-        return size;
-    }
-
-    public static void deleteFileSecurely(Context context, File file, ProgressDialogUpdater progress)
-            throws FileNotFoundException, IOException {
-        long length = file.length();
-        SecureRandom random = new SecureRandom();
-        RandomAccessFile raf = new RandomAccessFile(file, "rws");
-        raf.seek(0);
-        raf.getFilePointer();
-        byte[] data = new byte[1 << 16];
-        int pos = 0;
-        String msg = context.getString(R.string.progress_deletingSecurely, file.getName());
-        while (pos < length) {
-            if (progress != null)
-                progress.setProgress(msg, (int) (100 * pos / length), 100);
-            random.nextBytes(data);
-            raf.write(data);
-            pos += data.length;
-        }
-        raf.close();
-        file.delete();
-    }
-}