diff options
Diffstat (limited to 'org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java')
| -rw-r--r-- | org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java | 1827 |
1 files changed, 0 insertions, 1827 deletions
diff --git a/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java b/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java deleted file mode 100644 index 0cde19ae5..000000000 --- a/org_apg/src/org/thialfihar/android/apg/helper/PGPMain.java +++ /dev/null @@ -1,1827 +0,0 @@ -/* - * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de> - * 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.thialfihar.android.apg.helper; - -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.spongycastle.openpgp.operator.PBEDataDecryptorFactory; -import org.spongycastle.openpgp.operator.PBESecretKeyDecryptor; -import org.spongycastle.openpgp.operator.PBESecretKeyEncryptor; -import org.spongycastle.openpgp.operator.PGPContentSignerBuilder; -import org.spongycastle.openpgp.operator.PGPDigestCalculator; -import org.spongycastle.openpgp.operator.PGPDigestCalculatorProvider; -import org.spongycastle.openpgp.operator.PublicKeyDataDecryptorFactory; -import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentSignerBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentVerifierBuilderProvider; -import org.spongycastle.openpgp.operator.jcajce.JcaPGPDigestCalculatorProviderBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcaPGPKeyPair; -import org.spongycastle.openpgp.operator.jcajce.JcePBEDataDecryptorFactoryBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePBEKeyEncryptionMethodGenerator; -import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyDecryptorBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyEncryptorBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator; -import org.thialfihar.android.apg.provider.ProviderHelper; -import org.thialfihar.android.apg.service.ApgIntentService; -import org.thialfihar.android.apg.util.HkpKeyServer; -import org.thialfihar.android.apg.util.InputData; -import org.thialfihar.android.apg.util.PositionAwareInputStream; -import org.thialfihar.android.apg.util.Primes; -import org.thialfihar.android.apg.util.ProgressDialogUpdater; -import org.thialfihar.android.apg.util.KeyServer.AddKeyException; -import org.thialfihar.android.apg.Constants; -import org.thialfihar.android.apg.Id; -import org.thialfihar.android.apg.R; - -import android.content.Context; -import android.content.pm.PackageInfo; -import android.content.pm.PackageManager.NameNotFoundException; -import android.os.Bundle; -import android.os.Environment; -import org.thialfihar.android.apg.util.Log; - -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.ArrayList; -import java.util.Date; -import java.util.Iterator; -import java.util.Vector; -import java.util.regex.Pattern; - -/** - * TODO: - * - * - Separate this file into different helpers - * - */ -public class PGPMain { - - static { - // register spongy castle provider - Security.addProvider(new BouncyCastleProvider()); - } - - // Not BC due to the use of Spongy Castle for Android - public static final String BOUNCY_CASTLE_PROVIDER_NAME = "SC"; - - 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 String mEditPassPhrase = null; - - public static class ApgGeneralException extends Exception { - static final long serialVersionUID = 0xf812773342L; - - public ApgGeneralException(String message) { - super(message); - } - } - - public static class NoAsymmetricEncryptionException extends Exception { - static final long serialVersionUID = 0xf812773343L; - - public NoAsymmetricEncryptionException() { - super(); - } - } - - public static void setEditPassPhrase(String passPhrase) { - mEditPassPhrase = passPhrase; - } - - public static String getEditPassPhrase() { - return mEditPassPhrase; - } - - public static void updateProgress(ProgressDialogUpdater progress, int message, int current, - int total) { - if (progress != null) { - progress.setProgress(message, current, total); - } - } - - public static void updateProgress(ProgressDialogUpdater progress, int current, int total) { - if (progress != null) { - progress.setProgress(current, total); - } - } - - /** - * Creates new secret key. The returned PGPSecretKeyRing contains only one newly generated key - * when this key is the new masterkey. If a masterkey is supplied in the parameters - * PGPSecretKeyRing contains the masterkey and the new key as a subkey (certified by the - * masterkey). - * - * @param context - * @param algorithmChoice - * @param keySize - * @param passPhrase - * @param masterSecretKey - * @return - * @throws NoSuchAlgorithmException - * @throws PGPException - * @throws NoSuchProviderException - * @throws ApgGeneralException - * @throws InvalidAlgorithmParameterException - */ - public static PGPSecretKeyRing createKey(Context context, int algorithmChoice, int keySize, - String passPhrase, PGPSecretKey masterSecretKey) throws NoSuchAlgorithmException, - PGPException, NoSuchProviderException, ApgGeneralException, - InvalidAlgorithmParameterException { - - if (keySize < 512) { - throw new ApgGeneralException(context.getString(R.string.error_keySizeMinimum512bit)); - } - - if (passPhrase == null) { - passPhrase = ""; - } - - int algorithm = 0; - KeyPairGenerator keyGen = null; - - switch (algorithmChoice) { - case Id.choice.algorithm.dsa: { - keyGen = KeyPairGenerator.getInstance("DSA", BOUNCY_CASTLE_PROVIDER_NAME); - keyGen.initialize(keySize, new SecureRandom()); - algorithm = PGPPublicKey.DSA; - break; - } - - case Id.choice.algorithm.elgamal: { - if (masterSecretKey == null) { - throw new ApgGeneralException( - context.getString(R.string.error_masterKeyMustNotBeElGamal)); - } - keyGen = KeyPairGenerator.getInstance("ElGamal", BOUNCY_CASTLE_PROVIDER_NAME); - 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", BOUNCY_CASTLE_PROVIDER_NAME); - keyGen.initialize(keySize, new SecureRandom()); - - algorithm = PGPPublicKey.RSA_GENERAL; - break; - } - - default: { - throw new ApgGeneralException(context.getString(R.string.error_unknownAlgorithmChoice)); - } - } - - // build new key pair - PGPKeyPair keyPair = new JcaPGPKeyPair(algorithm, keyGen.generateKeyPair(), new Date()); - - // define hashing and signing algos - PGPDigestCalculator sha1Calc = new JcaPGPDigestCalculatorProviderBuilder().build().get( - HashAlgorithmTags.SHA1); - - // Build key encrypter and decrypter based on passphrase - PBESecretKeyEncryptor keyEncryptor = new JcePBESecretKeyEncryptorBuilder( - PGPEncryptedData.CAST5, sha1Calc).setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build( - passPhrase.toCharArray()); - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - BOUNCY_CASTLE_PROVIDER_NAME).build(passPhrase.toCharArray()); - - PGPKeyRingGenerator ringGen = null; - PGPContentSignerBuilder certificationSignerBuilder = null; - if (masterSecretKey == null) { - certificationSignerBuilder = new JcaPGPContentSignerBuilder(keyPair.getPublicKey() - .getAlgorithm(), HashAlgorithmTags.SHA1); - - // build keyRing with only this one master key in it! - ringGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION, keyPair, "", - sha1Calc, null, null, certificationSignerBuilder, keyEncryptor); - } else { - PGPPublicKey masterPublicKey = masterSecretKey.getPublicKey(); - PGPPrivateKey masterPrivateKey = masterSecretKey.extractPrivateKey(keyDecryptor); - PGPKeyPair masterKeyPair = new PGPKeyPair(masterPublicKey, masterPrivateKey); - - certificationSignerBuilder = new JcaPGPContentSignerBuilder(masterKeyPair - .getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1); - - // build keyRing with master key and new key as subkey (certified by masterkey) - ringGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION, masterKeyPair, - "", sha1Calc, null, null, certificationSignerBuilder, keyEncryptor); - - ringGen.addSubKey(keyPair); - } - - PGPSecretKeyRing secKeyRing = ringGen.generateSecretKeyRing(); - - return secKeyRing; - } - - public static void buildSecretKey(Context context, ArrayList<String> userIds, - ArrayList<PGPSecretKey> keys, ArrayList<Integer> keysUsages, long masterKeyId, - String oldPassPhrase, String newPassPhrase, ProgressDialogUpdater progress) - throws ApgGeneralException, NoSuchProviderException, PGPException, - NoSuchAlgorithmException, SignatureException, IOException { - - Log.d(Constants.TAG, "userIds: " + userIds.toString()); - - updateProgress(progress, R.string.progress_buildingKey, 0, 100); - - if (oldPassPhrase == null) { - oldPassPhrase = ""; - } - if (newPassPhrase == null) { - newPassPhrase = ""; - } - - updateProgress(progress, R.string.progress_preparingMasterKey, 10, 100); - - int usageId = keysUsages.get(0); - 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); - - // this removes all userIds and certifications previously attached to the masterPublicKey - PGPPublicKey tmpKey = masterKey.getPublicKey(); - PGPPublicKey masterPublicKey = new PGPPublicKey(tmpKey.getAlgorithm(), - tmpKey.getKey(new BouncyCastleProvider()), tmpKey.getCreationTime()); - - // already done by code above: - // PGPPublicKey masterPublicKey = masterKey.getPublicKey(); - // // Somehow, the PGPPublicKey already has an empty certification attached to it when the - // // keyRing is generated the first time, we remove that when it exists, before adding the - // new - // // ones - // PGPPublicKey masterPublicKeyRmCert = PGPPublicKey.removeCertification(masterPublicKey, - // ""); - // if (masterPublicKeyRmCert != null) { - // masterPublicKey = masterPublicKeyRmCert; - // } - - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - BOUNCY_CASTLE_PROVIDER_NAME).build(oldPassPhrase.toCharArray()); - PGPPrivateKey masterPrivateKey = masterKey.extractPrivateKey(keyDecryptor); - - updateProgress(progress, R.string.progress_certifyingMasterKey, 20, 100); - - for (String userId : userIds) { - PGPContentSignerBuilder signerBuilder = new JcaPGPContentSignerBuilder( - masterPublicKey.getAlgorithm(), HashAlgorithmTags.SHA1) - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - PGPSignatureGenerator sGen = new PGPSignatureGenerator(signerBuilder); - - sGen.init(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 (APG 1) - - 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 (APG 1) - // if (keyEditor.getExpiryDate() != null) { - // GregorianCalendar creationDate = new GregorianCalendar(); - // creationDate.setTime(getCreationDate(masterKey)); - // GregorianCalendar expiryDate = keyEditor.getExpiryDate(); - // long numDays = Utils.getNumDaysBetween(creationDate, expiryDate); - // if (numDays <= 0) { - // throw new GeneralException( - // context.getString(R.string.error_expiryMustComeAfterCreation)); - // } - // hashedPacketsGen.setKeyExpirationTime(true, numDays * 86400); - // } - - updateProgress(progress, R.string.progress_buildingMasterKeyRing, 30, 100); - - // define hashing and signing algos - PGPDigestCalculator sha1Calc = new JcaPGPDigestCalculatorProviderBuilder().build().get( - HashAlgorithmTags.SHA1); - PGPContentSignerBuilder certificationSignerBuilder = new JcaPGPContentSignerBuilder( - masterKeyPair.getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1); - - // Build key encrypter based on passphrase - PBESecretKeyEncryptor keyEncryptor = new JcePBESecretKeyEncryptorBuilder( - PGPEncryptedData.CAST5, sha1Calc).setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build( - newPassPhrase.toCharArray()); - - PGPKeyRingGenerator keyGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION, - masterKeyPair, mainUserId, sha1Calc, hashedPacketsGen.generate(), - unhashedPacketsGen.generate(), certificationSignerBuilder, keyEncryptor); - - updateProgress(progress, R.string.progress_addingSubKeys, 40, 100); - - for (int i = 1; i < keys.size(); ++i) { - updateProgress(progress, 40 + 50 * (i - 1) / (keys.size() - 1), 100); - - PGPSecretKey subKey = keys.get(i); - PGPPublicKey subPublicKey = subKey.getPublicKey(); - - PBESecretKeyDecryptor keyDecryptor2 = new JcePBESecretKeyDecryptorBuilder() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(oldPassPhrase.toCharArray()); - PGPPrivateKey subPrivateKey = subKey.extractPrivateKey(keyDecryptor2); - - // TODO: now used without algorithm and creation time?! (APG 1) - PGPKeyPair subKeyPair = new PGPKeyPair(subPublicKey, subPrivateKey); - - hashedPacketsGen = new PGPSignatureSubpacketGenerator(); - unhashedPacketsGen = new PGPSignatureSubpacketGenerator(); - - keyFlags = 0; - - usageId = keysUsages.get(i); - 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 (APG 1) - // if (keyEditor.getExpiryDate() != null) { - // GregorianCalendar creationDate = new GregorianCalendar(); - // creationDate.setTime(getCreationDate(masterKey)); - // GregorianCalendar expiryDate = keyEditor.getExpiryDate(); - // long numDays = Utils.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(); - - updateProgress(progress, R.string.progress_savingKeyRing, 90, 100); - - ProviderHelper.saveKeyRing(context, secretKeyRing); - ProviderHelper.saveKeyRing(context, publicKeyRing); - - updateProgress(progress, R.string.progress_done, 100, 100); - } - - public static int storeKeyRingInCache(Context context, 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 { - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(new char[] {}); - PGPPrivateKey testKey = secretKeyRing.getSecretKey().extractPrivateKey( - keyDecryptor); - 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) { - ProviderHelper.saveKeyRing(context, secretKeyRing); - // TODO: remove status returns, use exceptions! - status = Id.return_value.ok; - } - } else if (keyring instanceof PGPPublicKeyRing) { - PGPPublicKeyRing publicKeyRing = (PGPPublicKeyRing) keyring; - ProviderHelper.saveKeyRing(context, publicKeyRing); - // TODO: remove status returns, use exceptions! - status = Id.return_value.ok; - } - } catch (IOException 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(Context context, int type, InputData data, - ProgressDialogUpdater progress) throws ApgGeneralException, 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 ApgGeneralException(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 = PGPHelper.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(context, keyring); - } - - if (status == Id.return_value.error) { - throw new ApgGeneralException(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; - } - - updateProgress(progress, (int) (100 * progressIn.position() / data.getSize()), 100); - - // TODO: needed? - // obj = objectFactory.nextObject(); - - keyring = PGPHelper.decodeKeyRing(bufferedInput); - } - } catch (EOFException e) { - // nothing to do, we are done - } - - returnData.putInt(ApgIntentService.RESULT_IMPORT_ADDED, newKeys); - returnData.putInt(ApgIntentService.RESULT_IMPORT_UPDATED, oldKeys); - returnData.putInt(ApgIntentService.RESULT_IMPORT_BAD, badKeys); - - updateProgress(progress, R.string.progress_done, 100, 100); - - return returnData; - } - - public static Bundle exportKeyRings(Context context, Vector<Integer> keyRingIds, - OutputStream outStream, ProgressDialogUpdater progress) throws ApgGeneralException, - FileNotFoundException, PGPException, IOException { - Bundle returnData = new Bundle(); - - if (keyRingIds.size() == 1) { - updateProgress(progress, R.string.progress_exportingKey, 0, 100); - } else { - updateProgress(progress, R.string.progress_exportingKeys, 0, 100); - } - - if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { - throw new ApgGeneralException(context.getString(R.string.error_externalStorageNotReady)); - } - ArmoredOutputStream out = new ArmoredOutputStream(outStream); - out.setHeader("Version", getFullVersion(context)); - - int numKeys = 0; - for (int i = 0; i < keyRingIds.size(); ++i) { - updateProgress(progress, i * 100 / keyRingIds.size(), 100); - - // try to get it as a PGPPublicKeyRing, if that fails try to get it as a SecretKeyRing - PGPPublicKeyRing publicKeyRing = ProviderHelper.getPGPPublicKeyRingByMasterKeyId( - context, keyRingIds.get(i)); - if (publicKeyRing != null) { - publicKeyRing.encode(out); - } else { - PGPSecretKeyRing secretKeyRing = ProviderHelper.getPGPSecretKeyRingByMasterKeyId( - context, keyRingIds.get(i)); - if (secretKeyRing != null) { - secretKeyRing.encode(out); - } else { - continue; - } - } - ++numKeys; - } - out.close(); - returnData.putInt(ApgIntentService.RESULT_EXPORT, numKeys); - - updateProgress(progress, R.string.progress_done, 100, 100); - - return returnData; - } - - /** - * Encrypt and Sign data - * - * @param context - * @param progress - * @param data - * @param outStream - * @param useAsciiArmor - * @param compression - * @param encryptionKeyIds - * @param symmetricEncryptionAlgorithm - * @param encryptionPassphrase - * @param signatureKeyId - * @param signatureHashAlgorithm - * @param signatureForceV3 - * @param signaturePassphrase - * @throws IOException - * @throws ApgGeneralException - * @throws PGPException - * @throws NoSuchProviderException - * @throws NoSuchAlgorithmException - * @throws SignatureException - */ - public static void encryptAndSign(Context context, ProgressDialogUpdater progress, - InputData data, OutputStream outStream, boolean useAsciiArmor, int compression, - long encryptionKeyIds[], String encryptionPassphrase, int symmetricEncryptionAlgorithm, - long signatureKeyId, int signatureHashAlgorithm, boolean signatureForceV3, - String signaturePassphrase) throws IOException, ApgGeneralException, PGPException, - NoSuchProviderException, NoSuchAlgorithmException, SignatureException { - - if (encryptionKeyIds == null) { - encryptionKeyIds = new long[0]; - } - - ArmoredOutputStream armorOut = null; - OutputStream out = null; - OutputStream encryptOut = null; - if (useAsciiArmor) { - 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 && encryptionPassphrase == null) { - throw new ApgGeneralException( - context.getString(R.string.error_noEncryptionKeysOrPassPhrase)); - } - - if (signatureKeyId != Id.key.none) { - signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context, signatureKeyId); - signingKey = PGPHelper.getSigningKey(context, signatureKeyId); - if (signingKey == null) { - throw new ApgGeneralException(context.getString(R.string.error_signatureFailed)); - } - - if (signaturePassphrase == null) { - throw new ApgGeneralException( - context.getString(R.string.error_noSignaturePassPhrase)); - } - - updateProgress(progress, R.string.progress_extractingSignatureKey, 0, 100); - - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassphrase.toCharArray()); - signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - throw new ApgGeneralException( - context.getString(R.string.error_couldNotExtractPrivateKey)); - } - } - updateProgress(progress, R.string.progress_preparingStreams, 5, 100); - - // encrypt and compress input file content - JcePGPDataEncryptorBuilder encryptorBuilder = new JcePGPDataEncryptorBuilder( - symmetricEncryptionAlgorithm).setProvider(BOUNCY_CASTLE_PROVIDER_NAME) - .setWithIntegrityPacket(true); - - PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(encryptorBuilder); - - if (encryptionKeyIds.length == 0) { - // Symmetric encryption - Log.d(Constants.TAG, "encryptionKeyIds length is 0 -> symmetric encryption"); - - JcePBEKeyEncryptionMethodGenerator symmetricEncryptionGenerator = new JcePBEKeyEncryptionMethodGenerator( - encryptionPassphrase.toCharArray()); - cPk.addMethod(symmetricEncryptionGenerator); - } else { - // Asymmetric encryption - for (int i = 0; i < encryptionKeyIds.length; ++i) { - PGPPublicKey key = PGPHelper.getEncryptPublicKey(context, encryptionKeyIds[i]); - if (key != null) { - - JcePublicKeyKeyEncryptionMethodGenerator pubKeyEncryptionGenerator = new JcePublicKeyKeyEncryptionMethodGenerator( - key); - cPk.addMethod(pubKeyEncryptionGenerator); - } - } - } - encryptOut = cPk.open(out, new byte[1 << 16]); - - PGPSignatureGenerator signatureGenerator = null; - PGPV3SignatureGenerator signatureV3Generator = null; - - if (signatureKeyId != Id.key.none) { - updateProgress(progress, R.string.progress_preparingSignature, 10, 100); - - // content signer based on signing key algorithm and choosen hash algorithm - JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder( - signingKey.getPublicKey().getAlgorithm(), signatureHashAlgorithm) - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - - if (signatureForceV3) { - signatureV3Generator = new PGPV3SignatureGenerator(contentSignerBuilder); - signatureV3Generator.init(PGPSignature.BINARY_DOCUMENT, signaturePrivateKey); - } else { - signatureGenerator = new PGPSignatureGenerator(contentSignerBuilder); - signatureGenerator.init(PGPSignature.BINARY_DOCUMENT, signaturePrivateKey); - - String userId = PGPHelper.getMainUserId(PGPHelper.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 != Id.key.none) { - if (signatureForceV3) { - 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]); - updateProgress(progress, 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 != Id.key.none) { - if (signatureForceV3) { - signatureV3Generator.update(buffer, 0, n); - } else { - signatureGenerator.update(buffer, 0, n); - } - } - done += n; - if (data.getSize() != 0) { - updateProgress(progress, (int) (20 + (95 - 20) * done / data.getSize()), 100); - } - } - - literalGen.close(); - - if (signatureKeyId != Id.key.none) { - updateProgress(progress, R.string.progress_generatingSignature, 95, 100); - if (signatureForceV3) { - signatureV3Generator.generate().encode(pOut); - } else { - signatureGenerator.generate().encode(pOut); - } - } - if (compressGen != null) { - compressGen.close(); - } - encryptOut.close(); - if (useAsciiArmor) { - armorOut.close(); - } - - updateProgress(progress, R.string.progress_done, 100, 100); - } - - public static void signText(Context context, ProgressDialogUpdater progress, InputData data, - OutputStream outStream, long signatureKeyId, String signaturePassphrase, - int signatureHashAlgorithm, boolean forceV3Signature) throws ApgGeneralException, - PGPException, IOException, NoSuchAlgorithmException, SignatureException { - - ArmoredOutputStream armorOut = new ArmoredOutputStream(outStream); - armorOut.setHeader("Version", getFullVersion(context)); - - PGPSecretKey signingKey = null; - PGPSecretKeyRing signingKeyRing = null; - PGPPrivateKey signaturePrivateKey = null; - - if (signatureKeyId == 0) { - armorOut.close(); - throw new ApgGeneralException(context.getString(R.string.error_noSignatureKey)); - } - - signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context, signatureKeyId); - signingKey = PGPHelper.getSigningKey(context, signatureKeyId); - if (signingKey == null) { - armorOut.close(); - throw new ApgGeneralException(context.getString(R.string.error_signatureFailed)); - } - - if (signaturePassphrase == null) { - armorOut.close(); - throw new ApgGeneralException(context.getString(R.string.error_noSignaturePassPhrase)); - } - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassphrase.toCharArray()); - signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - armorOut.close(); - throw new ApgGeneralException( - context.getString(R.string.error_couldNotExtractPrivateKey)); - } - updateProgress(progress, R.string.progress_preparingStreams, 0, 100); - - updateProgress(progress, R.string.progress_preparingSignature, 30, 100); - - PGPSignatureGenerator signatureGenerator = null; - PGPV3SignatureGenerator signatureV3Generator = null; - - // content signer based on signing key algorithm and choosen hash algorithm - JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder(signingKey - .getPublicKey().getAlgorithm(), signatureHashAlgorithm) - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - - if (forceV3Signature) { - signatureV3Generator = new PGPV3SignatureGenerator(contentSignerBuilder); - signatureV3Generator.init(PGPSignature.CANONICAL_TEXT_DOCUMENT, signaturePrivateKey); - } else { - signatureGenerator = new PGPSignatureGenerator(contentSignerBuilder); - signatureGenerator.init(PGPSignature.CANONICAL_TEXT_DOCUMENT, signaturePrivateKey); - - PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator(); - String userId = PGPHelper.getMainUserId(PGPHelper.getMasterKey(signingKeyRing)); - spGen.setSignerUserID(false, userId); - signatureGenerator.setHashedSubpackets(spGen.generate()); - } - - updateProgress(progress, R.string.progress_signing, 40, 100); - - armorOut.beginClearText(signatureHashAlgorithm); - - 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(); - - updateProgress(progress, R.string.progress_done, 100, 100); - } - - public static void generateSignature(Context context, ProgressDialogUpdater progress, - InputData data, OutputStream outStream, boolean armored, boolean binary, - long signatureKeyId, String signaturePassPhrase, int hashAlgorithm, - boolean forceV3Signature) throws ApgGeneralException, PGPException, IOException, - NoSuchAlgorithmException, SignatureException { - - OutputStream out = null; - - // Ascii Armor (Base64) - ArmoredOutputStream armorOut = 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 ApgGeneralException(context.getString(R.string.error_noSignatureKey)); - } - - signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(context, signatureKeyId); - signingKey = PGPHelper.getSigningKey(context, signatureKeyId); - if (signingKey == null) { - throw new ApgGeneralException(context.getString(R.string.error_signatureFailed)); - } - - if (signaturePassPhrase == null) { - throw new ApgGeneralException(context.getString(R.string.error_noSignaturePassPhrase)); - } - - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassPhrase.toCharArray()); - signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - throw new ApgGeneralException( - context.getString(R.string.error_couldNotExtractPrivateKey)); - } - updateProgress(progress, R.string.progress_preparingStreams, 0, 100); - - updateProgress(progress, R.string.progress_preparingSignature, 30, 100); - - PGPSignatureGenerator signatureGenerator = null; - PGPV3SignatureGenerator signatureV3Generator = null; - - int type = PGPSignature.CANONICAL_TEXT_DOCUMENT; - if (binary) { - type = PGPSignature.BINARY_DOCUMENT; - } - - // content signer based on signing key algorithm and choosen hash algorithm - JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder(signingKey - .getPublicKey().getAlgorithm(), hashAlgorithm) - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - - if (forceV3Signature) { - signatureV3Generator = new PGPV3SignatureGenerator(contentSignerBuilder); - signatureV3Generator.init(type, signaturePrivateKey); - } else { - signatureGenerator = new PGPSignatureGenerator(contentSignerBuilder); - signatureGenerator.init(type, signaturePrivateKey); - - PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator(); - String userId = PGPHelper.getMainUserId(PGPHelper.getMasterKey(signingKeyRing)); - spGen.setSignerUserID(false, userId); - signatureGenerator.setHashedSubpackets(spGen.generate()); - } - - updateProgress(progress, 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 PGPPublicKeyRing signKey(Context context, long masterKeyId, long pubKeyId, - String passphrase) throws ApgGeneralException, NoSuchAlgorithmException, - NoSuchProviderException, PGPException, SignatureException { - if (passphrase == null || passphrase.length() <= 0) { - throw new ApgGeneralException("Unable to obtain passphrase"); - } else { - PGPPublicKeyRing pubring = ProviderHelper.getPGPPublicKeyRingByKeyId(context, pubKeyId); - - PGPSecretKey signingKey = PGPHelper.getSigningKey(context, masterKeyId); - if (signingKey == null) { - throw new ApgGeneralException(context.getString(R.string.error_signatureFailed)); - } - - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - BOUNCY_CASTLE_PROVIDER_NAME).build(passphrase.toCharArray()); - PGPPrivateKey signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - throw new ApgGeneralException( - context.getString(R.string.error_couldNotExtractPrivateKey)); - } - - // TODO: SHA256 fixed? - JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder( - signingKey.getPublicKey().getAlgorithm(), PGPUtil.SHA256) - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - - PGPSignatureGenerator signatureGenerator = new PGPSignatureGenerator( - contentSignerBuilder); - - signatureGenerator.init(PGPSignature.DIRECT_KEY, signaturePrivateKey); - - PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator(); - - PGPSignatureSubpacketVector packetVector = spGen.generate(); - signatureGenerator.setHashedSubpackets(packetVector); - - PGPPublicKey signedKey = PGPPublicKey.addCertification(pubring.getPublicKey(pubKeyId), - signatureGenerator.generate()); - pubring = PGPPublicKeyRing.insertPublicKey(pubring, signedKey); - - return pubring; - } - } - - public static long getDecryptionKeyId(Context context, InputStream inputStream) - throws ApgGeneralException, NoAsymmetricEncryptionException, IOException { - InputStream in = PGPUtil.getDecoderStream(inputStream); - 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 ApgGeneralException(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 = ProviderHelper.getPGPSecretKeyByKeyId(context, 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, InputStream inputStream) - throws ApgGeneralException, IOException { - InputStream in = PGPUtil.getDecoderStream(inputStream); - 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 ApgGeneralException(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 decryptAndVerify(Context context, ProgressDialogUpdater progress, - InputData data, OutputStream outStream, String passphrase, boolean assumeSymmetric) - throws IOException, ApgGeneralException, 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 ApgGeneralException(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 ApgGeneralException( - context.getString(R.string.error_noSymmetricEncryptionPacket)); - } - - updateProgress(progress, R.string.progress_preparingStreams, currentProgress, 100); - - PGPDigestCalculatorProvider digestCalcProvider = new JcaPGPDigestCalculatorProviderBuilder() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(); - PBEDataDecryptorFactory decryptorFactory = new JcePBEDataDecryptorFactoryBuilder( - digestCalcProvider).setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build( - passphrase.toCharArray()); - - clear = pbe.getDataStream(decryptorFactory); - - 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 = ProviderHelper.getPGPSecretKeyByKeyId(context, encData.getKeyID()); - if (secretKey != null) { - pbe = encData; - break; - } - } - } - - if (secretKey == null) { - throw new ApgGeneralException(context.getString(R.string.error_noSecretKeyFound)); - } - - currentProgress += 5; - updateProgress(progress, R.string.progress_extractingKey, currentProgress, 100); - PGPPrivateKey privateKey = null; - try { - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(passphrase.toCharArray()); - privateKey = secretKey.extractPrivateKey(keyDecryptor); - } catch (PGPException e) { - throw new PGPException(context.getString(R.string.error_wrongPassPhrase)); - } - if (privateKey == null) { - throw new ApgGeneralException( - context.getString(R.string.error_couldNotExtractPrivateKey)); - } - currentProgress += 5; - updateProgress(progress, R.string.progress_preparingStreams, currentProgress, 100); - - PublicKeyDataDecryptorFactory decryptorFactory = new JcePublicKeyDataDecryptorFactoryBuilder() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME).build(privateKey); - - clear = pbe.getDataStream(decryptorFactory); - - 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(ApgIntentService.RESULT_SIGNATURE, true); - PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk; - for (int i = 0; i < sigList.size(); ++i) { - signature = sigList.get(i); - signatureKey = ProviderHelper.getPGPPublicKeyByKeyId(context, signature.getKeyID()); - if (signatureKeyId == 0) { - signatureKeyId = signature.getKeyID(); - } - if (signatureKey == null) { - signature = null; - } else { - signatureIndex = i; - signatureKeyId = signature.getKeyID(); - String userId = null; - PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByKeyId( - context, signatureKeyId); - if (signKeyRing != null) { - userId = PGPHelper.getMainUserId(PGPHelper.getMasterKey(signKeyRing)); - } - returnData.putString(ApgIntentService.RESULT_SIGNATURE_USER_ID, userId); - break; - } - } - - returnData.putLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId); - - if (signature != null) { - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - - signature.init(contentVerifierBuilderProvider, signatureKey); - } else { - returnData.putBoolean(ApgIntentService.RESULT_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(ApgIntentService.RESULT_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)); - } - updateProgress(progress, 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(ApgIntentService.RESULT_SIGNATURE_SUCCESS, true); - } else { - returnData.putBoolean(ApgIntentService.RESULT_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 - } - - updateProgress(progress, R.string.progress_done, 100, 100); - return returnData; - } - - public static Bundle verifyText(Context context, ProgressDialogUpdater progress, - InputData data, OutputStream outStream, boolean lookupUnknownKey) throws IOException, - ApgGeneralException, PGPException, SignatureException { - Bundle returnData = new Bundle(); - - ByteArrayOutputStream out = new ByteArrayOutputStream(); - ArmoredInputStream aIn = new ArmoredInputStream(data.getInputStream()); - - updateProgress(progress, 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(ApgIntentService.RESULT_SIGNATURE, true); - - updateProgress(progress, R.string.progress_processingSignature, 60, 100); - PGPObjectFactory pgpFact = new PGPObjectFactory(aIn); - - PGPSignatureList sigList = (PGPSignatureList) pgpFact.nextObject(); - if (sigList == null) { - throw new ApgGeneralException(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 = ProviderHelper.getPGPPublicKeyByKeyId(context, signature.getKeyID()); - if (signatureKeyId == 0) { - signatureKeyId = signature.getKeyID(); - } - // if key is not known and we want to lookup unknown ones... - if (signatureKey == null && lookupUnknownKey) { - - returnData = new Bundle(); - returnData.putLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId); - returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_LOOKUP_KEY, true); - - // return directly now, decrypt will be done again after importing unknown key - return returnData; - } - - if (signatureKey == null) { - signature = null; - } else { - signatureKeyId = signature.getKeyID(); - String userId = null; - PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByKeyId(context, - signatureKeyId); - if (signKeyRing != null) { - userId = PGPHelper.getMainUserId(PGPHelper.getMasterKey(signKeyRing)); - } - returnData.putString(ApgIntentService.RESULT_SIGNATURE_USER_ID, userId); - break; - } - } - - returnData.putLong(ApgIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId); - - if (signature == null) { - returnData.putBoolean(ApgIntentService.RESULT_SIGNATURE_UNKNOWN, true); - if (progress != null) - progress.setProgress(R.string.progress_done, 100, 100); - return returnData; - } - - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider() - .setProvider(BOUNCY_CASTLE_PROVIDER_NAME); - - signature.init(contentVerifierBuilderProvider, signatureKey); - - 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(ApgIntentService.RESULT_SIGNATURE_SUCCESS, signature.verify()); - - updateProgress(progress, 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(Constants.PACKAGE_NAME, 0); - if (pi.versionCode % 100 == 99) { - return true; - } else { - return false; - } - } catch (NameNotFoundException e) { - // impossible! - return false; - } - } - - public static String getVersion(Context context) { - String version = null; - try { - PackageInfo pi = context.getPackageManager().getPackageInfo(Constants.PACKAGE_NAME, 0); - version = pi.versionName; - return version; - } catch (NameNotFoundException e) { - Log.e(Constants.TAG, "Version could not be retrieved!", e); - return "0.0.0"; - } - } - - public static String getFullVersion(Context context) { - return "APG v" + getVersion(context); - } - - /** - * Generate a random filename - * - * @param length - * @return - */ - public static String generateRandomFilename(int length) { - SecureRandom random = new SecureRandom(); - - 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; - } - - /** - * Go once through stream to get length of stream. The length is later used to display progress - * when encrypting/decrypting - * - * @param in - * @return - * @throws IOException - */ - public 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; - } - - /** - * Deletes file securely by overwriting it with random data before deleting it. - * - * TODO: Does this really help on flash storage? - * - * @param context - * @param progress - * @param file - * @throws FileNotFoundException - * @throws IOException - */ - public static void deleteFileSecurely(Context context, ProgressDialogUpdater progress, File file) - 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(); - } -} |