diff options
Diffstat (limited to 'OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpOperation.java')
| -rw-r--r-- | OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpOperation.java | 1154 |
1 files changed, 0 insertions, 1154 deletions
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpOperation.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpOperation.java deleted file mode 100644 index 1402be435..000000000 --- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpOperation.java +++ /dev/null @@ -1,1154 +0,0 @@ -/* - * Copyright (C) 2012-2013 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.sufficientlysecure.keychain.pgp; - -import java.io.BufferedInputStream; -import java.io.BufferedReader; -import java.io.ByteArrayInputStream; -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.io.OutputStream; -import java.security.NoSuchAlgorithmException; -import java.security.NoSuchProviderException; -import java.security.SignatureException; -import java.util.Date; -import java.util.Iterator; - -import org.spongycastle.bcpg.ArmoredInputStream; -import org.spongycastle.bcpg.ArmoredOutputStream; -import org.spongycastle.bcpg.BCPGInputStream; -import org.spongycastle.bcpg.BCPGOutputStream; - -import org.spongycastle.bcpg.SignaturePacket; - -import org.spongycastle.bcpg.SignatureSubpacket; -import org.spongycastle.bcpg.SignatureSubpacketTags; -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.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.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.JcePBEDataDecryptorFactoryBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePBEKeyEncryptionMethodGenerator; -import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyDecryptorBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder; -import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator; -import org.sufficientlysecure.keychain.Constants; -import org.sufficientlysecure.keychain.Id; -import org.sufficientlysecure.keychain.R; -import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException; -import org.sufficientlysecure.keychain.provider.ProviderHelper; -import org.sufficientlysecure.keychain.service.KeychainIntentService; -import org.sufficientlysecure.keychain.util.InputData; -import org.sufficientlysecure.keychain.util.Log; -import org.sufficientlysecure.keychain.util.ProgressDialogUpdater; - -import android.content.Context; -import android.os.Bundle; - -public class PgpOperation { - private Context mContext; - private ProgressDialogUpdater mProgress; - private InputData mData; - private OutputStream mOutStream; - - public PgpOperation(Context context, ProgressDialogUpdater progress, InputData data, - OutputStream outStream) { - super(); - this.mContext = context; - this.mProgress = progress; - this.mData = data; - this.mOutStream = outStream; - } - - public void updateProgress(int message, int current, int total) { - if (mProgress != null) { - mProgress.setProgress(message, current, total); - } - } - - public void updateProgress(int current, int total) { - if (mProgress != null) { - mProgress.setProgress(current, total); - } - } - - public void signAndEncrypt(boolean useAsciiArmor, int compression, long[] encryptionKeyIds, - String encryptionPassphrase, int symmetricEncryptionAlgorithm, long signatureKeyId, - int signatureHashAlgorithm, boolean signatureForceV3, String signaturePassphrase) - throws IOException, PgpGeneralException, 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(mOutStream); - armorOut.setHeader("Version", PgpHelper.getFullVersion(mContext)); - out = armorOut; - } else { - out = mOutStream; - } - PGPSecretKey signingKey = null; - PGPSecretKeyRing signingKeyRing = null; - PGPPrivateKey signaturePrivateKey = null; - - if (encryptionKeyIds.length == 0 && encryptionPassphrase == null) { - throw new PgpGeneralException( - mContext.getString(R.string.error_no_encryption_keys_or_passphrase)); - } - - if (signatureKeyId != Id.key.none) { - signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(mContext, signatureKeyId); - signingKey = PgpKeyHelper.getSigningKey(mContext, signatureKeyId); - if (signingKey == null) { - throw new PgpGeneralException(mContext.getString(R.string.error_signature_failed)); - } - - if (signaturePassphrase == null) { - throw new PgpGeneralException( - mContext.getString(R.string.error_no_signature_passphrase)); - } - - updateProgress(R.string.progress_extracting_signature_key, 0, 100); - - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassphrase.toCharArray()); - signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - throw new PgpGeneralException( - mContext.getString(R.string.error_could_not_extract_private_key)); - } - } - updateProgress(R.string.progress_preparing_streams, 5, 100); - - // encrypt and compress input file content - JcePGPDataEncryptorBuilder encryptorBuilder = new JcePGPDataEncryptorBuilder( - symmetricEncryptionAlgorithm).setProvider(Constants.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 (long id : encryptionKeyIds) { - PGPPublicKey key = PgpKeyHelper.getEncryptPublicKey(mContext, id); - 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(R.string.progress_preparing_signature, 10, 100); - - // content signer based on signing key algorithm and choosen hash algorithm - JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder( - signingKey.getPublicKey().getAlgorithm(), signatureHashAlgorithm) - .setProvider(Constants.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 = PgpKeyHelper.getMainUserId(PgpKeyHelper - .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(R.string.progress_encrypting, 20, 100); - - long done = 0; - int n = 0; - byte[] buffer = new byte[1 << 16]; - InputStream in = mData.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 (mData.getSize() != 0) { - updateProgress((int) (20 + (95 - 20) * done / mData.getSize()), 100); - } - } - - literalGen.close(); - - if (signatureKeyId != Id.key.none) { - updateProgress(R.string.progress_generating_signature, 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(R.string.progress_done, 100, 100); - } - - public void signText(long signatureKeyId, String signaturePassphrase, - int signatureHashAlgorithm, boolean forceV3Signature) throws PgpGeneralException, - PGPException, IOException, NoSuchAlgorithmException, SignatureException { - - ArmoredOutputStream armorOut = new ArmoredOutputStream(mOutStream); - armorOut.setHeader("Version", PgpHelper.getFullVersion(mContext)); - - PGPSecretKey signingKey = null; - PGPSecretKeyRing signingKeyRing = null; - PGPPrivateKey signaturePrivateKey = null; - - if (signatureKeyId == 0) { - armorOut.close(); - throw new PgpGeneralException(mContext.getString(R.string.error_no_signature_key)); - } - - signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(mContext, signatureKeyId); - signingKey = PgpKeyHelper.getSigningKey(mContext, signatureKeyId); - if (signingKey == null) { - armorOut.close(); - throw new PgpGeneralException(mContext.getString(R.string.error_signature_failed)); - } - - if (signaturePassphrase == null) { - armorOut.close(); - throw new PgpGeneralException(mContext.getString(R.string.error_no_signature_passphrase)); - } - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassphrase.toCharArray()); - signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - armorOut.close(); - throw new PgpGeneralException( - mContext.getString(R.string.error_could_not_extract_private_key)); - } - updateProgress(R.string.progress_preparing_streams, 0, 100); - - updateProgress(R.string.progress_preparing_signature, 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(Constants.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 = PgpKeyHelper.getMainUserId(PgpKeyHelper.getMasterKey(signingKeyRing)); - spGen.setSignerUserID(false, userId); - signatureGenerator.setHashedSubpackets(spGen.generate()); - } - - updateProgress(R.string.progress_signing, 40, 100); - - armorOut.beginClearText(signatureHashAlgorithm); - - InputStream inStream = mData.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(R.string.progress_done, 100, 100); - } - - public void generateSignature(boolean armored, boolean binary, long signatureKeyId, - String signaturePassPhrase, int hashAlgorithm, boolean forceV3Signature) - throws PgpGeneralException, PGPException, IOException, NoSuchAlgorithmException, - SignatureException { - - OutputStream out = null; - - // Ascii Armor (Base64) - ArmoredOutputStream armorOut = null; - if (armored) { - armorOut = new ArmoredOutputStream(mOutStream); - armorOut.setHeader("Version", PgpHelper.getFullVersion(mContext)); - out = armorOut; - } else { - out = mOutStream; - } - - PGPSecretKey signingKey = null; - PGPSecretKeyRing signingKeyRing = null; - PGPPrivateKey signaturePrivateKey = null; - - if (signatureKeyId == 0) { - throw new PgpGeneralException(mContext.getString(R.string.error_no_signature_key)); - } - - signingKeyRing = ProviderHelper.getPGPSecretKeyRingByKeyId(mContext, signatureKeyId); - signingKey = PgpKeyHelper.getSigningKey(mContext, signatureKeyId); - if (signingKey == null) { - throw new PgpGeneralException(mContext.getString(R.string.error_signature_failed)); - } - - if (signaturePassPhrase == null) { - throw new PgpGeneralException(mContext.getString(R.string.error_no_signature_passphrase)); - } - - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider( - Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(signaturePassPhrase.toCharArray()); - signaturePrivateKey = signingKey.extractPrivateKey(keyDecryptor); - if (signaturePrivateKey == null) { - throw new PgpGeneralException( - mContext.getString(R.string.error_could_not_extract_private_key)); - } - updateProgress(R.string.progress_preparing_streams, 0, 100); - - updateProgress(R.string.progress_preparing_signature, 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(Constants.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 = PgpKeyHelper.getMainUserId(PgpKeyHelper.getMasterKey(signingKeyRing)); - spGen.setSignerUserID(false, userId); - signatureGenerator.setHashedSubpackets(spGen.generate()); - } - - updateProgress(R.string.progress_signing, 40, 100); - - InputStream inStream = mData.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(); - mOutStream.close(); - - if (mProgress != null) - mProgress.setProgress(R.string.progress_done, 100, 100); - } - - public static boolean hasSymmetricEncryption(Context context, InputStream inputStream) - throws PgpGeneralException, 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 PgpGeneralException(context.getString(R.string.error_invalid_data)); - } - - Iterator<?> it = enc.getEncryptedDataObjects(); - while (it.hasNext()) { - Object obj = it.next(); - if (obj instanceof PGPPBEEncryptedData) { - return true; - } - } - - return false; - } - - public Bundle decryptAndVerify(String passphrase, boolean assumeSymmetric) throws IOException, - PgpGeneralException, PGPException, SignatureException { - if (passphrase == null) { - passphrase = ""; - } - - Bundle returnData = new Bundle(); - InputStream in = PGPUtil.getDecoderStream(mData.getInputStream()); - PGPObjectFactory pgpF = new PGPObjectFactory(in); - PGPEncryptedDataList enc; - Object o = pgpF.nextObject(); - long signatureKeyId = 0; - - int currentProgress = 0; - updateProgress(R.string.progress_reading_data, currentProgress, 100); - - if (o instanceof PGPEncryptedDataList) { - enc = (PGPEncryptedDataList) o; - } else { - enc = (PGPEncryptedDataList) pgpF.nextObject(); - } - - if (enc == null) { - throw new PgpGeneralException(mContext.getString(R.string.error_invalid_data)); - } - - 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 PgpGeneralException( - mContext.getString(R.string.error_no_symmetric_encryption_packet)); - } - - updateProgress(R.string.progress_preparing_streams, currentProgress, 100); - - PGPDigestCalculatorProvider digestCalcProvider = new JcaPGPDigestCalculatorProviderBuilder() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(); - PBEDataDecryptorFactory decryptorFactory = new JcePBEDataDecryptorFactoryBuilder( - digestCalcProvider).setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build( - passphrase.toCharArray()); - - clear = pbe.getDataStream(decryptorFactory); - - encryptedData = pbe; - currentProgress += 5; - } else { - updateProgress(R.string.progress_finding_key, 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(mContext, encData.getKeyID()); - if (secretKey != null) { - pbe = encData; - break; - } - } - } - - if (secretKey == null) { - throw new PgpGeneralException(mContext.getString(R.string.error_no_secret_key_found)); - } - - currentProgress += 5; - updateProgress(R.string.progress_extracting_key, currentProgress, 100); - PGPPrivateKey privateKey = null; - try { - PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build( - passphrase.toCharArray()); - privateKey = secretKey.extractPrivateKey(keyDecryptor); - } catch (PGPException e) { - throw new PGPException(mContext.getString(R.string.error_wrong_passphrase)); - } - if (privateKey == null) { - throw new PgpGeneralException( - mContext.getString(R.string.error_could_not_extract_private_key)); - } - currentProgress += 5; - updateProgress(R.string.progress_preparing_streams, currentProgress, 100); - - PublicKeyDataDecryptorFactory decryptorFactory = new JcePublicKeyDataDecryptorFactoryBuilder() - .setProvider(Constants.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) { - updateProgress(R.string.progress_decompressing_data, currentProgress, 100); - - PGPObjectFactory fact = new PGPObjectFactory( - ((PGPCompressedData) dataChunk).getDataStream()); - dataChunk = fact.nextObject(); - plainFact = fact; - currentProgress += 10; - } - - if (dataChunk instanceof PGPOnePassSignatureList) { - updateProgress(R.string.progress_processing_signature, currentProgress, 100); - - returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE, true); - PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk; - for (int i = 0; i < sigList.size(); ++i) { - signature = sigList.get(i); - signatureKey = ProviderHelper - .getPGPPublicKeyByKeyId(mContext, 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( - mContext, signatureKeyId); - if (signKeyRing != null) { - userId = PgpKeyHelper.getMainUserId(PgpKeyHelper.getMasterKey(signKeyRing)); - } - returnData.putString(KeychainIntentService.RESULT_SIGNATURE_USER_ID, userId); - break; - } - } - - returnData.putLong(KeychainIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId); - - if (signature != null) { - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); - - signature.init(contentVerifierBuilderProvider, signatureKey); - } else { - returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE_UNKNOWN, true); - } - - dataChunk = plainFact.nextObject(); - currentProgress += 10; - } - - if (dataChunk instanceof PGPSignatureList) { - dataChunk = plainFact.nextObject(); - } - - if (dataChunk instanceof PGPLiteralData) { - updateProgress(R.string.progress_decrypting, currentProgress, 100); - - PGPLiteralData literalData = (PGPLiteralData) dataChunk; - OutputStream out = mOutStream; - - 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 = mData.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(KeychainIntentService.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 (mData.getSize() - startPos == 0) { - currentProgress = endProgress; - } else { - currentProgress = (int) (startProgress + (endProgress - startProgress) - * (mData.getStreamPosition() - startPos) / (mData.getSize() - startPos)); - } - updateProgress(currentProgress, 100); - } - - if (signature != null) { - updateProgress(R.string.progress_verifying_signature, 90, 100); - - PGPSignatureList signatureList = (PGPSignatureList) plainFact.nextObject(); - PGPSignature messageSignature = signatureList.get(signatureIndex); - - //Now check binding signatures - boolean keyBinding_isok = verifyKeyBinding(mContext, messageSignature, signatureKey); - boolean sig_isok = signature.verify(messageSignature); - returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE_SUCCESS, keyBinding_isok & sig_isok); - } - } - - // TODO: add integrity somewhere - if (encryptedData.isIntegrityProtected()) { - updateProgress(R.string.progress_verifying_integrity, 95, 100); - - if (encryptedData.verify()) { - // passed - } else { - // failed - } - } else { - // no integrity check - } - - updateProgress(R.string.progress_done, 100, 100); - return returnData; - } - - public Bundle verifyText(boolean lookupUnknownKey) throws IOException, PgpGeneralException, - PGPException, SignatureException { - Bundle returnData = new Bundle(); - - ByteArrayOutputStream out = new ByteArrayOutputStream(); - ArmoredInputStream aIn = new ArmoredInputStream(mData.getInputStream()); - - updateProgress(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(); - mOutStream.write(clearText); - - returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE, true); - - updateProgress(R.string.progress_processing_signature, 60, 100); - PGPObjectFactory pgpFact = new PGPObjectFactory(aIn); - - PGPSignatureList sigList = (PGPSignatureList) pgpFact.nextObject(); - if (sigList == null) { - throw new PgpGeneralException(mContext.getString(R.string.error_corrupt_data)); - } - PGPSignature signature = null; - long signatureKeyId = 0; - PGPPublicKey signatureKey = null; - for (int i = 0; i < sigList.size(); ++i) { - signature = sigList.get(i); - signatureKey = ProviderHelper.getPGPPublicKeyByKeyId(mContext, 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(KeychainIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId); - returnData.putBoolean(KeychainIntentService.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(mContext, - signatureKeyId); - if (signKeyRing != null) { - userId = PgpKeyHelper.getMainUserId(PgpKeyHelper.getMasterKey(signKeyRing)); - } - returnData.putString(KeychainIntentService.RESULT_SIGNATURE_USER_ID, userId); - break; - } - } - - returnData.putLong(KeychainIntentService.RESULT_SIGNATURE_KEY_ID, signatureKeyId); - - if (signature == null) { - returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE_UNKNOWN, true); - if (mProgress != null) - mProgress.setProgress(R.string.progress_done, 100, 100); - return returnData; - } - - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.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); - } - - boolean sig_isok = signature.verify(); - - //Now check binding signatures - boolean keyBinding_isok = verifyKeyBinding(mContext, signature, signatureKey); - - returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE_SUCCESS, sig_isok & keyBinding_isok); - - updateProgress(R.string.progress_done, 100, 100); - return returnData; - } - - public boolean verifyKeyBinding(Context mContext, PGPSignature signature, PGPPublicKey signatureKey) - { - long signatureKeyId = signature.getKeyID(); - boolean keyBinding_isok = false; - String userId = null; - PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByKeyId(mContext, - signatureKeyId); - PGPPublicKey mKey = null; - if (signKeyRing != null) { - mKey = PgpKeyHelper.getMasterKey(signKeyRing); - } - if (signature.getKeyID() != mKey.getKeyID()) { - keyBinding_isok = verifyKeyBinding(mKey, signatureKey); - } else { //if the key used to make the signature was the master key, no need to check binding sigs - keyBinding_isok = true; - } - return keyBinding_isok; - } - - public boolean verifyKeyBinding(PGPPublicKey masterPublicKey, PGPPublicKey signingPublicKey) - { - boolean subkeyBinding_isok = false; - boolean tmp_subkeyBinding_isok = false; - boolean primkeyBinding_isok = false; - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); - - Iterator<PGPSignature> itr = signingPublicKey.getSignatures(); - - subkeyBinding_isok = false; - tmp_subkeyBinding_isok = false; - primkeyBinding_isok = false; - while (itr.hasNext()) { //what does gpg do if the subkey binding is wrong? - //gpg has an invalid subkey binding error on key import I think, but doesn't shout - //about keys without subkey signing. Can't get it to import a slightly broken one - //either, so we will err on bad subkey binding here. - PGPSignature sig = itr.next(); - if (sig.getKeyID() == masterPublicKey.getKeyID() && sig.getSignatureType() == PGPSignature.SUBKEY_BINDING) { - //check and if ok, check primary key binding. - try { - sig.init(contentVerifierBuilderProvider, masterPublicKey); - tmp_subkeyBinding_isok = sig.verifyCertification(masterPublicKey, signingPublicKey); - } catch (PGPException e) { - continue; - } catch (SignatureException e) { - continue; - } - - if (tmp_subkeyBinding_isok) - subkeyBinding_isok = true; - if (tmp_subkeyBinding_isok) { - primkeyBinding_isok = verifyPrimaryBinding(sig.getUnhashedSubPackets(), masterPublicKey, signingPublicKey); - if (primkeyBinding_isok) - break; - primkeyBinding_isok = verifyPrimaryBinding(sig.getHashedSubPackets(), masterPublicKey, signingPublicKey); - if (primkeyBinding_isok) - break; - } - } - } - return (subkeyBinding_isok & primkeyBinding_isok); - } - - private boolean verifyPrimaryBinding(PGPSignatureSubpacketVector Pkts, PGPPublicKey masterPublicKey, PGPPublicKey signingPublicKey) - { - boolean primkeyBinding_isok = false; - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); - PGPSignatureList eSigList; - - if (Pkts.hasSubpacket(SignatureSubpacketTags.EMBEDDED_SIGNATURE)) { - try { - eSigList = Pkts.getEmbeddedSignatures(); - } catch (IOException e) { - return false; - } catch (PGPException e) { - return false; - } - for (int j = 0; j < eSigList.size(); ++j) { - PGPSignature emSig = eSigList.get(j); - if (emSig.getSignatureType() == PGPSignature.PRIMARYKEY_BINDING) { - try { - emSig.init(contentVerifierBuilderProvider, signingPublicKey); - primkeyBinding_isok = emSig.verifyCertification(masterPublicKey, signingPublicKey); - if (primkeyBinding_isok) - break; - } catch (PGPException e) { - continue; - } catch (SignatureException e) { - continue; - } - } - } - } - return primkeyBinding_isok; - } - - 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; - } -} |