diff options
Diffstat (limited to 'OpenKeychain/src')
10 files changed, 533 insertions, 441 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/KeybaseVerificationOperation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/KeybaseVerificationOperation.java index aaff0a07c..f3ceac681 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/KeybaseVerificationOperation.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/KeybaseVerificationOperation.java @@ -151,7 +151,6 @@ public class KeybaseVerificationOperation extends BaseOperation<KeybaseVerificat PgpDecryptVerifyOperation op = new PgpDecryptVerifyOperation(mContext, mProviderHelper, mProgressable); PgpDecryptVerifyInputParcel input = new PgpDecryptVerifyInputParcel(messageBytes) - .setSignedLiteralData(true) .setRequiredSignerFingerprint(requiredFingerprint); DecryptVerifyResult decryptVerifyResult = op.execute(input, new CryptoInputParcel()); diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java index 00c88089a..f959ddd76 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java @@ -661,6 +661,7 @@ public abstract class OperationResult implements Parcelable { MSG_DC_ERROR_INPUT (LogLevel.ERROR, R.string.msg_dc_error_input), MSG_DC_ERROR_NO_DATA (LogLevel.ERROR, R.string.msg_dc_error_no_data), MSG_DC_ERROR_NO_KEY (LogLevel.ERROR, R.string.msg_dc_error_no_key), + MSG_DC_ERROR_NO_SIGNATURE (LogLevel.ERROR, R.string.msg_dc_error_no_signature), MSG_DC_ERROR_PGP_EXCEPTION (LogLevel.ERROR, R.string.msg_dc_error_pgp_exception), MSG_DC_INTEGRITY_CHECK_OK (LogLevel.INFO, R.string.msg_dc_integrity_check_ok), MSG_DC_OK_META_ONLY (LogLevel.OK, R.string.msg_dc_ok_meta_only), @@ -687,6 +688,7 @@ public abstract class OperationResult implements Parcelable { MSG_VL_ERROR_MISSING_SIGLIST (LogLevel.ERROR, R.string.msg_vl_error_no_siglist), MSG_VL_ERROR_MISSING_LITERAL (LogLevel.ERROR, R.string.msg_vl_error_missing_literal), MSG_VL_ERROR_MISSING_KEY (LogLevel.ERROR, R.string.msg_vl_error_wrong_key), + MSG_VL_ERROR_NO_SIGNATURE (LogLevel.ERROR, R.string.msg_vl_error_no_signature), MSG_VL_CLEAR_SIGNATURE_CHECK (LogLevel.DEBUG, R.string.msg_vl_clear_signature_check), MSG_VL_ERROR_INTEGRITY_CHECK (LogLevel.ERROR, R.string.msg_vl_error_integrity_check), MSG_VL_OK (LogLevel.OK, R.string.msg_vl_ok), @@ -703,7 +705,6 @@ public abstract class OperationResult implements Parcelable { // pgpsignencrypt MSG_PSE_ASYMMETRIC (LogLevel.INFO, R.string.msg_pse_asymmetric), - MSG_PSE_CLEARSIGN_ONLY (LogLevel.DEBUG, R.string.msg_pse_clearsign_only), MSG_PSE_COMPRESSING (LogLevel.DEBUG, R.string.msg_pse_compressing), MSG_PSE_ENCRYPTING (LogLevel.DEBUG, R.string.msg_pse_encrypting), MSG_PSE_ERROR_BAD_PASSPHRASE (LogLevel.ERROR, R.string.msg_pse_error_bad_passphrase), diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java index 412468a48..476b4e59c 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java @@ -44,13 +44,17 @@ import java.util.Iterator; public class CanonicalizedPublicKey extends UncachedPublicKey { // this is the parent key ring - final KeyRing mRing; + final CanonicalizedKeyRing mRing; - CanonicalizedPublicKey(KeyRing ring, PGPPublicKey key) { + CanonicalizedPublicKey(CanonicalizedKeyRing ring, PGPPublicKey key) { super(key); mRing = ring; } + public CanonicalizedKeyRing getKeyRing() { + return mRing; + } + public IterableIterator<String> getUserIds() { return new IterableIterator<String>(mPublicKey.getUserIDs()); } diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/OpenPgpSignatureResultBuilder.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/OpenPgpSignatureResultBuilder.java index 9d059b58f..2dd1e2dde 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/OpenPgpSignatureResultBuilder.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/OpenPgpSignatureResultBuilder.java @@ -91,11 +91,12 @@ public class OpenPgpSignatureResultBuilder { return mInsecure; } - public void initValid(CanonicalizedPublicKeyRing signingRing, - CanonicalizedPublicKey signingKey) { + public void initValid(CanonicalizedPublicKey signingKey) { setSignatureAvailable(true); setKnownKey(true); + CanonicalizedKeyRing signingRing = signingKey.getKeyRing(); + // from RING setKeyId(signingRing.getMasterKeyId()); try { diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyInputParcel.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyInputParcel.java index 3eef7759c..bc9b54cd6 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyInputParcel.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyInputParcel.java @@ -18,7 +18,7 @@ package org.sufficientlysecure.keychain.pgp; -import java.io.InputStream; + import java.util.HashSet; import android.net.Uri; @@ -36,7 +36,6 @@ public class PgpDecryptVerifyInputParcel implements Parcelable { private boolean mDecryptMetadataOnly; private byte[] mDetachedSignature; private String mRequiredSignerFingerprint; - private boolean mSignedLiteralData; public PgpDecryptVerifyInputParcel() { } @@ -61,7 +60,6 @@ public class PgpDecryptVerifyInputParcel implements Parcelable { mDecryptMetadataOnly = source.readInt() != 0; mDetachedSignature = source.createByteArray(); mRequiredSignerFingerprint = source.readString(); - mSignedLiteralData = source.readInt() != 0; } @Override @@ -80,7 +78,6 @@ public class PgpDecryptVerifyInputParcel implements Parcelable { dest.writeInt(mDecryptMetadataOnly ? 1 : 0); dest.writeByteArray(mDetachedSignature); dest.writeString(mRequiredSignerFingerprint); - dest.writeInt(mSignedLiteralData ? 1 : 0); } byte[] getInputBytes() { @@ -150,15 +147,6 @@ public class PgpDecryptVerifyInputParcel implements Parcelable { return this; } - boolean isSignedLiteralData() { - return mSignedLiteralData; - } - - public PgpDecryptVerifyInputParcel setSignedLiteralData(boolean signedLiteralData) { - mSignedLiteralData = signedLiteralData; - return this; - } - public static final Creator<PgpDecryptVerifyInputParcel> CREATOR = new Creator<PgpDecryptVerifyInputParcel>() { public PgpDecryptVerifyInputParcel createFromParcel(final Parcel source) { return new PgpDecryptVerifyInputParcel(source); diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java index 36b4f5e1e..0709d4f62 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java @@ -18,13 +18,23 @@ package org.sufficientlysecure.keychain.pgp; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.security.SignatureException; +import java.util.Date; +import java.util.Iterator; + import android.content.Context; import android.support.annotation.NonNull; import android.webkit.MimeTypeMap; import org.openintents.openpgp.OpenPgpDecryptionResult; import org.openintents.openpgp.OpenPgpMetadata; -import org.openintents.openpgp.OpenPgpSignatureResult; import org.spongycastle.bcpg.ArmoredInputStream; import org.spongycastle.openpgp.PGPCompressedData; import org.spongycastle.openpgp.PGPDataValidationException; @@ -33,18 +43,14 @@ import org.spongycastle.openpgp.PGPEncryptedDataList; import org.spongycastle.openpgp.PGPException; import org.spongycastle.openpgp.PGPKeyValidationException; import org.spongycastle.openpgp.PGPLiteralData; -import org.spongycastle.openpgp.PGPOnePassSignature; -import org.spongycastle.openpgp.PGPOnePassSignatureList; import org.spongycastle.openpgp.PGPPBEEncryptedData; import org.spongycastle.openpgp.PGPPublicKeyEncryptedData; -import org.spongycastle.openpgp.PGPSignature; import org.spongycastle.openpgp.PGPSignatureList; import org.spongycastle.openpgp.PGPUtil; import org.spongycastle.openpgp.jcajce.JcaPGPObjectFactory; import org.spongycastle.openpgp.operator.PBEDataDecryptorFactory; import org.spongycastle.openpgp.operator.PGPDigestCalculatorProvider; import org.spongycastle.openpgp.operator.jcajce.CachingDataDecryptorFactory; -import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentVerifierBuilderProvider; import org.spongycastle.openpgp.operator.jcajce.JcaPGPDigestCalculatorProviderBuilder; import org.spongycastle.openpgp.operator.jcajce.JcePBEDataDecryptorFactoryBuilder; import org.spongycastle.util.encoders.DecoderException; @@ -68,17 +74,6 @@ import org.sufficientlysecure.keychain.util.Log; import org.sufficientlysecure.keychain.util.Passphrase; import org.sufficientlysecure.keychain.util.ProgressScaler; -import java.io.BufferedInputStream; -import java.io.ByteArrayInputStream; -import java.io.ByteArrayOutputStream; -import java.io.FileNotFoundException; -import java.io.IOException; -import java.io.InputStream; -import java.io.OutputStream; -import java.security.SignatureException; -import java.util.Date; -import java.util.Iterator; - public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInputParcel> { public PgpDecryptVerifyOperation(Context context, ProviderHelper providerHelper, Progressable progressable) { @@ -153,9 +148,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp // it is ascii armored Log.d(Constants.TAG, "ASCII Armor Header Line: " + aIn.getArmorHeaderLine()); - if (input.isSignedLiteralData()) { - return verifySignedLiteralData(input, aIn, outputStream, 0); - } else if (aIn.isClearText()) { + if (aIn.isClearText()) { // a cleartext signature, verify it with the other method return verifyCleartextSignature(aIn, outputStream, 0); } else { @@ -186,133 +179,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp } } - /**Verify signed plaintext data (PGP/INLINE). */ - @NonNull - private DecryptVerifyResult verifySignedLiteralData( - PgpDecryptVerifyInputParcel input, InputStream in, OutputStream out, int indent) - throws IOException, PGPException { - OperationLog log = new OperationLog(); - log.add(LogType.MSG_VL, indent); - - // thinking that the proof-fetching operation is going to take most of the time - updateProgress(R.string.progress_reading_data, 75, 100); - - JcaPGPObjectFactory pgpF = new JcaPGPObjectFactory(in); - Object o = pgpF.nextObject(); - if (o instanceof PGPCompressedData) { - log.add(LogType.MSG_DC_CLEAR_DECOMPRESS, indent + 1); - - pgpF = new JcaPGPObjectFactory(((PGPCompressedData) o).getDataStream()); - o = pgpF.nextObject(); - updateProgress(R.string.progress_decompressing_data, 80, 100); - } - - // all we want to see is a OnePassSignatureList followed by LiteralData - if (!(o instanceof PGPOnePassSignatureList)) { - log.add(LogType.MSG_VL_ERROR_MISSING_SIGLIST, indent); - return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); - } - PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) o; - - // go through all signatures (should be just one), make sure we have - // the key and it matches the one we’re looking for - CanonicalizedPublicKeyRing signingRing = null; - CanonicalizedPublicKey signingKey = null; - int signatureIndex = -1; - for (int i = 0; i < sigList.size(); ++i) { - try { - long sigKeyId = sigList.get(i).getKeyID(); - signingRing = mProviderHelper.getCanonicalizedPublicKeyRing( - KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId) - ); - signingKey = signingRing.getPublicKey(sigKeyId); - signatureIndex = i; - } catch (ProviderHelper.NotFoundException e) { - Log.d(Constants.TAG, "key not found, trying next signature..."); - } - } - - // there has to be a key, and it has to be the right one - if (signingKey == null) { - log.add(LogType.MSG_VL_ERROR_MISSING_KEY, indent); - Log.d(Constants.TAG, "Failed to find key in signed-literal message"); - return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); - } - - String fingerprint = KeyFormattingUtils.convertFingerprintToHex(signingRing.getFingerprint()); - if (!(input.getRequiredSignerFingerprint().equals(fingerprint))) { - log.add(LogType.MSG_VL_ERROR_MISSING_KEY, indent); - Log.d(Constants.TAG, "Fingerprint mismatch; wanted " + input.getRequiredSignerFingerprint() + - " got " + fingerprint + "!"); - return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); - } - - OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder(); - - PGPOnePassSignature signature = sigList.get(signatureIndex); - signatureResultBuilder.initValid(signingRing, signingKey); - - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = - new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); - signature.init(contentVerifierBuilderProvider, signingKey.getPublicKey()); - - o = pgpF.nextObject(); - - if (!(o instanceof PGPLiteralData)) { - log.add(LogType.MSG_VL_ERROR_MISSING_LITERAL, indent); - return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); - } - - PGPLiteralData literalData = (PGPLiteralData) o; - - log.add(LogType.MSG_DC_CLEAR_DATA, indent + 1); - updateProgress(R.string.progress_decrypting, 85, 100); - - InputStream dataIn = literalData.getInputStream(); - - int length; - byte[] buffer = new byte[1 << 16]; - while ((length = dataIn.read(buffer)) > 0) { - out.write(buffer, 0, length); - signature.update(buffer, 0, length); - } - - updateProgress(R.string.progress_verifying_signature, 95, 100); - log.add(LogType.MSG_VL_CLEAR_SIGNATURE_CHECK, indent + 1); - - PGPSignatureList signatureList = (PGPSignatureList) pgpF.nextObject(); - PGPSignature messageSignature = signatureList.get(signatureIndex); - - // Verify signature and check binding signatures - boolean validSignature = signature.verify(messageSignature); - if (validSignature) { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1); - } else { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1); - } - signatureResultBuilder.setValidSignature(validSignature); - - OpenPgpSignatureResult signatureResult = signatureResultBuilder.build(); - - if (signatureResult.getResult() != OpenPgpSignatureResult.RESULT_VALID_CONFIRMED - && signatureResult.getResult() != OpenPgpSignatureResult.RESULT_VALID_UNCONFIRMED) { - log.add(LogType.MSG_VL_ERROR_INTEGRITY_CHECK, indent); - return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); - } - - updateProgress(R.string.progress_done, 100, 100); - - log.add(LogType.MSG_VL_OK, indent); - - // Return a positive result, with metadata and verification info - DecryptVerifyResult result = new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log); - result.setSignatureResult(signatureResult); - result.setDecryptionResult( - new OpenPgpDecryptionResult(OpenPgpDecryptionResult.RESULT_NOT_ENCRYPTED)); - return result; - } - private static class EncryptStreamResult { // this is non-null iff an error occured, return directly @@ -368,7 +234,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp } } - OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder(); OpenPgpDecryptionResultBuilder decryptionResultBuilder = new OpenPgpDecryptionResultBuilder(); JcaPGPObjectFactory plainFact; @@ -415,10 +280,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp log.add(LogType.MSG_DC_PREP_STREAMS, indent); - int signatureIndex = -1; - CanonicalizedPublicKeyRing signingRing = null; - CanonicalizedPublicKey signingKey = null; - log.add(LogType.MSG_DC_CLEAR, indent); indent += 1; @@ -435,58 +296,8 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp plainFact = fact; } - // resolve leading signature data - PGPOnePassSignature signature = null; - if (dataChunk instanceof PGPOnePassSignatureList) { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE, indent + 1); - currentProgress += 2; - updateProgress(R.string.progress_processing_signature, currentProgress, 100); - - PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk; - - // NOTE: following code is similar to processSignature, but for PGPOnePassSignature - - // go through all signatures - // and find out for which signature we have a key in our database - for (int i = 0; i < sigList.size(); ++i) { - try { - long sigKeyId = sigList.get(i).getKeyID(); - signingRing = mProviderHelper.getCanonicalizedPublicKeyRing( - KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId) - ); - signingKey = signingRing.getPublicKey(sigKeyId); - signatureIndex = i; - } catch (ProviderHelper.NotFoundException e) { - Log.d(Constants.TAG, "key not found, trying next signature..."); - } - } - - if (signingKey != null) { - // key found in our database! - signature = sigList.get(signatureIndex); - - signatureResultBuilder.initValid(signingRing, signingKey); - - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = - new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); - signature.init(contentVerifierBuilderProvider, signingKey.getPublicKey()); - } else { - // no key in our database -> return "unknown pub key" status including the first key id - if (!sigList.isEmpty()) { - signatureResultBuilder.setSignatureAvailable(true); - signatureResultBuilder.setKnownKey(false); - signatureResultBuilder.setKeyId(sigList.get(0).getKeyID()); - } - } - - // check for insecure signing key - // TODO: checks on signingRing ? - if (signingKey != null && ! PgpSecurityConstants.isSecureKey(signingKey)) { - log.add(LogType.MSG_DC_INSECURE_KEY, indent + 1); - signatureResultBuilder.setInsecure(true); - } - + PgpSignatureChecker signatureChecker = new PgpSignatureChecker(mProviderHelper); + if (signatureChecker.initializeOnePassSignature(dataChunk, log, indent +1)) { dataChunk = plainFact.nextObject(); } @@ -567,16 +378,8 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp return result; } - int endProgress; - if (signature != null) { - endProgress = 90; - } else if (esResult != null && esResult.encryptedData.isIntegrityProtected()) { - endProgress = 95; - } else { - endProgress = 100; - } ProgressScaler progressScaler = - new ProgressScaler(mProgressable, currentProgress, endProgress, 100); + new ProgressScaler(mProgressable, currentProgress, 95, 100); InputStream dataIn = literalData.getInputStream(); @@ -591,11 +394,10 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp } // update signature buffer if signature is also present - if (signature != null) { - signature.update(buffer, 0, length); - } + signatureChecker.updateSignatureData(buffer, 0, length); alreadyWritten += length; + // noinspection ConstantConditions, TODO progress if (wholeSize > 0) { long progress = 100 * alreadyWritten / wholeSize; // stop at 100% for wrong file sizes... @@ -604,34 +406,20 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp } progressScaler.setProgress((int) progress, 100); } - // TODO: slow annealing to fake a progress? } metadata = new OpenPgpMetadata( originalFilename, mimeType, literalData.getModificationTime().getTime(), alreadyWritten, charset); - if (signature != null) { - updateProgress(R.string.progress_verifying_signature, 90, 100); - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_CHECK, indent); - - PGPSignatureList signatureList = (PGPSignatureList) plainFact.nextObject(); - PGPSignature messageSignature = signatureList.get(signatureIndex); + if (signatureChecker.isInitialized()) { - // Verify signature - boolean validSignature = signature.verify(messageSignature); - if (validSignature) { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1); - } else { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1); - } + Object o = plainFact.nextObject(); + boolean signatureCheckOk = signatureChecker.verifySignatureOnePass(o, log, indent + 1); - // check for insecure hash algorithms - if (!PgpSecurityConstants.isSecureHashAlgorithm(signature.getHashAlgorithm())) { - log.add(LogType.MSG_DC_INSECURE_HASH_ALGO, indent + 1); - signatureResultBuilder.setInsecure(true); + if (!signatureCheckOk) { + return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); } - signatureResultBuilder.setValidSignature(validSignature); } indent -= 1; @@ -646,7 +434,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp log.add(LogType.MSG_DC_ERROR_INTEGRITY_CHECK, indent); return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); } - } else if (signature == null) { + } else if ( ! signatureChecker.isInitialized() ) { // If no signature is present, we *require* an MDC! // Handle missing integrity protection like failed integrity protection! // The MDC packet can be stripped by an attacker! @@ -663,7 +451,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp DecryptVerifyResult result = new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log); result.setCachedCryptoInputParcel(cryptoInput); - result.setSignatureResult(signatureResultBuilder.build()); + result.setSignatureResult(signatureChecker.getSignatureResult()); result.setDecryptionResult(decryptionResultBuilder.build()); result.setDecryptionMetadata(metadata); @@ -674,13 +462,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp private EncryptStreamResult handleEncryptedPacket(PgpDecryptVerifyInputParcel input, CryptoInputParcel cryptoInput, PGPEncryptedDataList enc, OperationLog log, int indent, int currentProgress) throws PGPException { - // TODO is this necessary? - /* - else if (obj instanceof PGPEncryptedDataList) { - enc = (PGPEncryptedDataList) pgpF.nextObject(); - } - */ - EncryptStreamResult result = new EncryptStreamResult(); boolean asymmetricPacketFound = false; @@ -721,11 +502,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent + 1); continue; } - if (secretKeyRing == null) { - // continue with the next packet in the while loop - log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent + 1); - continue; - } // allow only specific keys for decryption? if (input.getAllowedKeyIds() != null) { @@ -745,11 +521,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp // get subkey which has been used for this encryption packet secretEncryptionKey = secretKeyRing.getSecretKey(subKeyId); - if (secretEncryptionKey == null) { - // should actually never happen, so no need to be more specific. - log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent + 1); - continue; - } /* secret key exists in database and is allowed! */ asymmetricPacketFound = true; @@ -951,30 +722,31 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp OperationLog log = new OperationLog(); - OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder(); - - ByteArrayOutputStream out = new ByteArrayOutputStream(); - - updateProgress(R.string.progress_reading_data, 0, 100); + byte[] clearText; + { // read cleartext + ByteArrayOutputStream out = new ByteArrayOutputStream(); - ByteArrayOutputStream lineOut = new ByteArrayOutputStream(); - int lookAhead = readInputLine(lineOut, aIn); - byte[] lineSep = getLineSeparator(); + updateProgress(R.string.progress_reading_data, 0, 100); - byte[] line = lineOut.toByteArray(); - out.write(line, 0, getLengthWithoutSeparator(line)); - out.write(lineSep); + ByteArrayOutputStream lineOut = new ByteArrayOutputStream(); + int lookAhead = readInputLine(lineOut, aIn); + byte[] lineSep = getLineSeparator(); - while (lookAhead != -1 && aIn.isClearText()) { - lookAhead = readInputLine(lineOut, lookAhead, aIn); - line = lineOut.toByteArray(); + byte[] line = lineOut.toByteArray(); out.write(line, 0, getLengthWithoutSeparator(line)); out.write(lineSep); - } - out.close(); + while (lookAhead != -1 && aIn.isClearText()) { + lookAhead = readInputLine(lineOut, lookAhead, aIn); + line = lineOut.toByteArray(); + out.write(line, 0, getLengthWithoutSeparator(line)); + out.write(lineSep); + } + + out.close(); + clearText = out.toByteArray(); + } - byte[] clearText = out.toByteArray(); if (outputStream != null) { outputStream.write(clearText); outputStream.close(); @@ -983,51 +755,20 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp updateProgress(R.string.progress_processing_signature, 60, 100); JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(aIn); - PGPSignatureList sigList = (PGPSignatureList) pgpFact.nextObject(); - if (sigList == null) { + PgpSignatureChecker signatureChecker = new PgpSignatureChecker(mProviderHelper); + + Object o = pgpFact.nextObject(); + if (!signatureChecker.initializeSignature(o, log, indent+1)) { log.add(LogType.MSG_DC_ERROR_INVALID_DATA, 0); return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); } - PGPSignature signature = processPGPSignatureList(sigList, signatureResultBuilder, log, indent); - - if (signature != null) { + if (signatureChecker.isInitialized()) { try { updateProgress(R.string.progress_verifying_signature, 90, 100); - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_CHECK, indent); - - 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); - } - - // Verify signature and check binding signatures - boolean validSignature = signature.verify(); - if (validSignature) { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1); - } else { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1); - } - - // check for insecure hash algorithms - if (!PgpSecurityConstants.isSecureHashAlgorithm(signature.getHashAlgorithm())) { - log.add(LogType.MSG_DC_INSECURE_HASH_ALGO, indent + 1); - signatureResultBuilder.setInsecure(true); - } - - signatureResultBuilder.setValidSignature(validSignature); + signatureChecker.updateSignatureWithCleartext(clearText); + signatureChecker.verifySignature(log, indent); } catch (SignatureException e) { Log.d(Constants.TAG, "SignatureException", e); @@ -1046,7 +787,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp clearText.length); DecryptVerifyResult result = new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log); - result.setSignatureResult(signatureResultBuilder.build()); + result.setSignatureResult(signatureChecker.getSignatureResult()); result.setDecryptionResult( new OpenPgpDecryptionResult(OpenPgpDecryptionResult.RESULT_NOT_ENCRYPTED)); result.setDecryptionMetadata(metadata); @@ -1060,30 +801,28 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp OperationLog log = new OperationLog(); - OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder(); - updateProgress(R.string.progress_processing_signature, 0, 100); InputStream detachedSigIn = new ByteArrayInputStream(input.getDetachedSignature()); detachedSigIn = PGPUtil.getDecoderStream(detachedSigIn); JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(detachedSigIn); - PGPSignatureList sigList; Object o = pgpFact.nextObject(); if (o instanceof PGPCompressedData) { PGPCompressedData c1 = (PGPCompressedData) o; pgpFact = new JcaPGPObjectFactory(c1.getDataStream()); - sigList = (PGPSignatureList) pgpFact.nextObject(); - } else if (o instanceof PGPSignatureList) { - sigList = (PGPSignatureList) o; - } else { + o = pgpFact.nextObject(); + } + + PgpSignatureChecker signatureChecker = new PgpSignatureChecker(mProviderHelper); + + if ( ! signatureChecker.initializeSignature(o, log, indent+1)) { log.add(LogType.MSG_DC_ERROR_INVALID_DATA, 0); return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log); } - PGPSignature signature = processPGPSignatureList(sigList, signatureResultBuilder, log, indent); + if (signatureChecker.isInitialized()) { - if (signature != null) { updateProgress(R.string.progress_reading_data, 60, 100); ProgressScaler progressScaler = new ProgressScaler(mProgressable, 60, 90, 100); @@ -1098,7 +837,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp } // update signature buffer if signature is also present - signature.update(buffer, 0, length); + signatureChecker.updateSignatureData(buffer, 0, length); alreadyWritten += length; if (wholeSize > 0) { @@ -1109,105 +848,28 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp } progressScaler.setProgress((int) progress, 100); } - // TODO: slow annealing to fake a progress? } updateProgress(R.string.progress_verifying_signature, 90, 100); log.add(LogType.MSG_DC_CLEAR_SIGNATURE_CHECK, indent); - // Verify signature and check binding signatures - boolean validSignature = signature.verify(); - if (validSignature) { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1); - } else { - log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1); - } - - // check for insecure hash algorithms - if (!PgpSecurityConstants.isSecureHashAlgorithm(signature.getHashAlgorithm())) { - log.add(LogType.MSG_DC_INSECURE_HASH_ALGO, indent + 1); - signatureResultBuilder.setInsecure(true); - } + signatureChecker.verifySignature(log, indent); - signatureResultBuilder.setValidSignature(validSignature); } updateProgress(R.string.progress_done, 100, 100); log.add(LogType.MSG_DC_OK, indent); + // TODO return metadata object? + DecryptVerifyResult result = new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log); - result.setSignatureResult(signatureResultBuilder.build()); + result.setSignatureResult(signatureChecker.getSignatureResult()); result.setDecryptionResult( new OpenPgpDecryptionResult(OpenPgpDecryptionResult.RESULT_NOT_ENCRYPTED)); return result; } - private PGPSignature processPGPSignatureList( - PGPSignatureList sigList, OpenPgpSignatureResultBuilder signatureResultBuilder, - OperationLog log, int indent) - throws PGPException { - CanonicalizedPublicKeyRing signingRing = null; - CanonicalizedPublicKey signingKey = null; - int signatureIndex = -1; - - // go through all signatures - // and find out for which signature we have a key in our database - for (int i = 0; i < sigList.size(); ++i) { - try { - long sigKeyId = sigList.get(i).getKeyID(); - signingRing = mProviderHelper.getCanonicalizedPublicKeyRing( - KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId) - ); - signingKey = signingRing.getPublicKey(sigKeyId); - signatureIndex = i; - } catch (ProviderHelper.NotFoundException e) { - Log.d(Constants.TAG, "key not found, trying next signature..."); - } - } - - PGPSignature signature = null; - - if (signingKey != null) { - // key found in our database! - signature = sigList.get(signatureIndex); - - signatureResultBuilder.initValid(signingRing, signingKey); - - JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = - new JcaPGPContentVerifierBuilderProvider() - .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); - signature.init(contentVerifierBuilderProvider, signingKey.getPublicKey()); - } else { - // no key in our database -> return "unknown pub key" status including the first key id - if (!sigList.isEmpty()) { - signatureResultBuilder.setSignatureAvailable(true); - signatureResultBuilder.setKnownKey(false); - signatureResultBuilder.setKeyId(sigList.get(0).getKeyID()); - } - } - - // check for insecure signing key - // TODO: checks on signingRing ? - if (signingKey != null && ! PgpSecurityConstants.isSecureKey(signingKey)) { - log.add(LogType.MSG_DC_INSECURE_KEY, indent + 1); - signatureResultBuilder.setInsecure(true); - } - - return signature; - } - - /** - * Mostly taken from ClearSignedFileProcessor in Bouncy Castle - */ - private static void processLine(PGPSignature sig, byte[] line) - throws SignatureException { - int length = getLengthWithoutWhiteSpace(line); - if (length > 0) { - sig.update(line, 0, length); - } - } - private static int readInputLine(ByteArrayOutputStream bOut, InputStream fIn) throws IOException { bOut.reset(); @@ -1273,22 +935,9 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp 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"); return nl.getBytes(); } + } diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java index 29b2ef727..406c64ae8 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java @@ -491,9 +491,7 @@ public class PgpSignEncryptOperation extends BaseOperation { literalGen.close(); } else { - pOut = null; - // TODO: Is this log right? - log.add(LogType.MSG_PSE_CLEARSIGN_ONLY, indent); + throw new AssertionError("cannot clearsign in non-ascii armored text, this is a bug!"); } if (enableSignature) { diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignatureChecker.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignatureChecker.java new file mode 100644 index 000000000..a892a8a0d --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignatureChecker.java @@ -0,0 +1,336 @@ +package org.sufficientlysecure.keychain.pgp; + + +import java.io.BufferedInputStream; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.security.SignatureException; + +import org.openintents.openpgp.OpenPgpSignatureResult; +import org.spongycastle.openpgp.PGPException; +import org.spongycastle.openpgp.PGPOnePassSignature; +import org.spongycastle.openpgp.PGPOnePassSignatureList; +import org.spongycastle.openpgp.PGPSignature; +import org.spongycastle.openpgp.PGPSignatureList; +import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentVerifierBuilderProvider; +import org.sufficientlysecure.keychain.Constants; +import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType; +import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog; +import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings; +import org.sufficientlysecure.keychain.provider.ProviderHelper; +import org.sufficientlysecure.keychain.util.Log; + + +/** This class is used to track the state of a single signature verification. + * + * + */ +class PgpSignatureChecker { + + OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder(); + + private CanonicalizedPublicKey signingKey; + + private int signatureIndex; + PGPOnePassSignature onePassSignature; + PGPSignature signature; + + ProviderHelper mProviderHelper; + + PgpSignatureChecker(ProviderHelper providerHelper) { + mProviderHelper = providerHelper; + } + + boolean initializeSignature(Object dataChunk, OperationLog log, int indent) throws PGPException { + + if (!(dataChunk instanceof PGPSignatureList)) { + return false; + } + + PGPSignatureList sigList = (PGPSignatureList) dataChunk; + findAvailableSignature(sigList); + + if (signingKey != null) { + + // key found in our database! + signatureResultBuilder.initValid(signingKey); + + JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = + new JcaPGPContentVerifierBuilderProvider() + .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); + signature.init(contentVerifierBuilderProvider, signingKey.getPublicKey()); + checkKeySecurity(log, indent); + + + } else if (!sigList.isEmpty()) { + + signatureResultBuilder.setSignatureAvailable(true); + signatureResultBuilder.setKnownKey(false); + signatureResultBuilder.setKeyId(sigList.get(0).getKeyID()); + + } + + return true; + + } + + boolean initializeOnePassSignature(Object dataChunk, OperationLog log, int indent) throws PGPException { + + if (!(dataChunk instanceof PGPOnePassSignatureList)) { + return false; + } + + log.add(LogType.MSG_DC_CLEAR_SIGNATURE, indent + 1); + + PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk; + findAvailableSignature(sigList); + + if (signingKey != null) { + + // key found in our database! + signatureResultBuilder.initValid(signingKey); + + JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider = + new JcaPGPContentVerifierBuilderProvider() + .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); + onePassSignature.init(contentVerifierBuilderProvider, signingKey.getPublicKey()); + + checkKeySecurity(log, indent); + + } else if (!sigList.isEmpty()) { + + signatureResultBuilder.setSignatureAvailable(true); + signatureResultBuilder.setKnownKey(false); + signatureResultBuilder.setKeyId(sigList.get(0).getKeyID()); + + } + + return true; + + } + + private void checkKeySecurity(OperationLog log, int indent) { + // TODO: checks on signingRing ? + if (!PgpSecurityConstants.isSecureKey(signingKey)) { + log.add(LogType.MSG_DC_INSECURE_KEY, indent + 1); + signatureResultBuilder.setInsecure(true); + } + } + + public boolean isInitialized() { + return signingKey != null; + } + + private void findAvailableSignature(PGPOnePassSignatureList sigList) { + // go through all signatures (should be just one), make sure we have + // the key and it matches the one we’re looking for + for (int i = 0; i < sigList.size(); ++i) { + try { + long sigKeyId = sigList.get(i).getKeyID(); + CanonicalizedPublicKeyRing signingRing = mProviderHelper.getCanonicalizedPublicKeyRing( + KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId) + ); + signatureIndex = i; + signingKey = signingRing.getPublicKey(sigKeyId); + onePassSignature = sigList.get(i); + return; + } catch (ProviderHelper.NotFoundException e) { + Log.d(Constants.TAG, "key not found, trying next signature..."); + } + } + } + + public void findAvailableSignature(PGPSignatureList sigList) { + // go through all signatures (should be just one), make sure we have + // the key and it matches the one we’re looking for + for (int i = 0; i < sigList.size(); ++i) { + try { + long sigKeyId = sigList.get(i).getKeyID(); + CanonicalizedPublicKeyRing signingRing = mProviderHelper.getCanonicalizedPublicKeyRing( + KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId) + ); + signatureIndex = i; + signingKey = signingRing.getPublicKey(sigKeyId); + signature = sigList.get(i); + return; + } catch (ProviderHelper.NotFoundException e) { + Log.d(Constants.TAG, "key not found, trying next signature..."); + } + } + } + + public void updateSignatureWithCleartext(byte[] clearText) throws IOException, SignatureException { + + InputStream sigIn = new BufferedInputStream(new ByteArrayInputStream(clearText)); + + ByteArrayOutputStream outputBuffer = new ByteArrayOutputStream(); + + int lookAhead = readInputLine(outputBuffer, sigIn); + + processLine(signature, outputBuffer.toByteArray()); + + while (lookAhead != -1) { + lookAhead = readInputLine(outputBuffer, lookAhead, sigIn); + + signature.update((byte) '\r'); + signature.update((byte) '\n'); + + processLine(signature, outputBuffer.toByteArray()); + } + + } + + public void updateSignatureData(byte[] buf, int off, int len) { + if (signature != null) { + signature.update(buf, off, len); + } else if (onePassSignature != null) { + onePassSignature.update(buf, off, len); + } + } + + void verifySignature(OperationLog log, int indent) throws PGPException { + + log.add(LogType.MSG_DC_CLEAR_SIGNATURE_CHECK, indent); + + // Verify signature + boolean validSignature = signature.verify(); + if (validSignature) { + log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1); + } else { + log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1); + } + + // check for insecure hash algorithms + if (!PgpSecurityConstants.isSecureHashAlgorithm(signature.getHashAlgorithm())) { + log.add(LogType.MSG_DC_INSECURE_HASH_ALGO, indent + 1); + signatureResultBuilder.setInsecure(true); + } + + signatureResultBuilder.setValidSignature(validSignature); + + } + + boolean verifySignatureOnePass(Object o, OperationLog log, int indent) throws PGPException { + + if (!(o instanceof PGPSignatureList)) { + log.add(LogType.MSG_DC_ERROR_NO_SIGNATURE, indent); + return false; + } + PGPSignatureList signatureList = (PGPSignatureList) o; + if (signatureList.size() <= signatureIndex) { + log.add(LogType.MSG_DC_ERROR_NO_SIGNATURE, indent); + return false; + } + + // PGPOnePassSignature and PGPSignature packets are "bracketed", + // so we need to take the last-minus-index'th element here + PGPSignature messageSignature = signatureList.get(signatureList.size() - 1 - signatureIndex); + + // Verify signature + boolean validSignature = onePassSignature.verify(messageSignature); + if (validSignature) { + log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1); + } else { + log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1); + } + + // check for insecure hash algorithms + if (!PgpSecurityConstants.isSecureHashAlgorithm(onePassSignature.getHashAlgorithm())) { + log.add(LogType.MSG_DC_INSECURE_HASH_ALGO, indent + 1); + signatureResultBuilder.setInsecure(true); + } + + signatureResultBuilder.setValidSignature(validSignature); + + return true; + + } + + public byte[] getSigningFingerprint() { + return signingKey.getFingerprint(); + } + + public OpenPgpSignatureResult getSignatureResult() { + return signatureResultBuilder.build(); + } + + /** + * Mostly taken from ClearSignedFileProcessor in Bouncy Castle + */ + + private static void processLine(PGPSignature sig, byte[] line) + throws SignatureException { + 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 = readPastEOL(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 = readPastEOL(bOut, ch, fIn); + break; + } + } while ((ch = fIn.read()) >= 0); + + if (ch < 0) { + lookAhead = -1; + } + + return lookAhead; + } + + private static int readPastEOL(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 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 == ' '; + } + +} diff --git a/OpenKeychain/src/main/res/values/strings.xml b/OpenKeychain/src/main/res/values/strings.xml index e39132f42..03493d697 100644 --- a/OpenKeychain/src/main/res/values/strings.xml +++ b/OpenKeychain/src/main/res/values/strings.xml @@ -436,7 +436,6 @@ <string name="progress_decrypting">"decrypting data…"</string> <string name="progress_preparing_signature">"preparing signature…"</string> <string name="progress_generating_signature">"generating signature…"</string> - <string name="progress_processing_signature">"processing signature…"</string> <string name="progress_verifying_signature">"verifying signature…"</string> <string name="progress_signing">"signing…"</string> <string name="progress_certifying">"certifying…"</string> @@ -1174,6 +1173,7 @@ <string name="msg_dc_error_input">"Error opening input data stream!"</string> <string name="msg_dc_error_no_data">"No encrypted data found in stream!"</string> <string name="msg_dc_error_no_key">"No encrypted data with known secret key found in stream!"</string> + <string name="msg_dc_error_no_signature">"Missing signature data!"</string> <string name="msg_dc_error_pgp_exception">"Encountered OpenPGP Exception during operation!"</string> <string name="msg_dc_integrity_check_ok">"Integrity check OK!"</string> <string name="msg_dc_ok_meta_only">"Only metadata was requested, skipping decryption"</string> @@ -1197,8 +1197,9 @@ <!-- Messages for VerifySignedLiteralData operation --> <string name="msg_vl">"Starting signature check"</string> - <string name="msg_vl_error_no_siglist">"No signature list in signed literal data"</string> - <string name="msg_vl_error_wrong_key">"Message not signed with right key"</string> + <string name="msg_vl_error_no_siglist">"No signature list in signed literal data!"</string> + <string name="msg_vl_error_wrong_key">"Message not signed with expected key!"</string> + <string name="msg_vl_error_no_signature">"Missing signature data!"</string> <string name="msg_vl_error_missing_literal">"No payload in signed literal data"</string> <string name="msg_vl_clear_meta_file">"Filename: %s"</string> <string name="msg_vl_clear_meta_mime">"MIME type: %s"</string> @@ -1220,7 +1221,6 @@ <!-- Messages for PgpSignEncrypt operation --> <string name="msg_pse_asymmetric">"Preparing public keys for encryption"</string> - <string name="msg_pse_clearsign_only">"Signing of cleartext input not supported!"</string> <string name="msg_pse_compressing">"Preparing compression"</string> <string name="msg_pse_encrypting">"Encrypting data"</string> <string name="msg_pse_error_bad_passphrase">"Bad password!"</string> diff --git a/OpenKeychain/src/test/java/org/sufficientlysecure/keychain/pgp/PgpEncryptDecryptTest.java b/OpenKeychain/src/test/java/org/sufficientlysecure/keychain/pgp/PgpEncryptDecryptTest.java index 9f2d4e015..be233d0b3 100644 --- a/OpenKeychain/src/test/java/org/sufficientlysecure/keychain/pgp/PgpEncryptDecryptTest.java +++ b/OpenKeychain/src/test/java/org/sufficientlysecure/keychain/pgp/PgpEncryptDecryptTest.java @@ -27,6 +27,7 @@ import java.util.Date; import java.util.HashSet; import java.util.Iterator; +import org.apache.tools.ant.util.StringUtils; import org.junit.Assert; import org.junit.Before; import org.junit.BeforeClass; @@ -287,7 +288,7 @@ public class PgpEncryptDecryptTest { } @Test - public void testAsymmetricSign() { + public void testAsymmetricSignLiteral() { String plaintext = "dies ist ein plaintext ☭" + TestingUtils.genPassphrase(true); byte[] ciphertext; @@ -341,6 +342,121 @@ public class PgpEncryptDecryptTest { } @Test + public void testAsymmetricSignCleartext() { + + String plaintext = "dies ist ein\r\nplaintext\n ☭" + TestingUtils.genPassphrase(true); + byte[] ciphertext; + + { // encrypt data with key + ByteArrayOutputStream out = new ByteArrayOutputStream(); + ByteArrayInputStream in = new ByteArrayInputStream(plaintext.getBytes()); + + PgpSignEncryptOperation op = new PgpSignEncryptOperation(RuntimeEnvironment.application, + new ProviderHelper(RuntimeEnvironment.application), null); + + InputData data = new InputData(in, in.available()); + PgpSignEncryptInputParcel input = new PgpSignEncryptInputParcel(); + + // only sign, as cleartext + input.setSignatureMasterKeyId(mStaticRing1.getMasterKeyId()); + input.setSignatureSubKeyId(KeyringTestingHelper.getSubkeyId(mStaticRing1, 1)); + input.setCleartextSignature(true); + input.setEnableAsciiArmorOutput(true); + input.setDetachedSignature(false); + + PgpSignEncryptResult result = op.execute(input, new CryptoInputParcel(mKeyPhrase1), data, out); + Assert.assertTrue("signing must succeed", result.success()); + + ciphertext = out.toByteArray(); + } + + Assert.assertTrue("clearsigned text must contain plaintext (ignoring newlines)", + new String(ciphertext).replace("\r\n", "").contains(plaintext.replace("\r", "").replace("\n", ""))); + + { // verification should succeed + + ByteArrayOutputStream out = new ByteArrayOutputStream(); + ByteArrayInputStream in = new ByteArrayInputStream(ciphertext); + InputData data = new InputData(in, in.available()); + + PgpDecryptVerifyOperation op = operationWithFakePassphraseCache(null, null, null); + PgpDecryptVerifyInputParcel input = new PgpDecryptVerifyInputParcel(); + DecryptVerifyResult result = op.execute(input, new CryptoInputParcel(), data, out); + + Assert.assertTrue("verification must succeed", result.success()); + + Assert.assertTrue("verification text should equal plaintext (ignoring newlines)", + new String(out.toByteArray()).replace(StringUtils.LINE_SEP, "") + .equals(plaintext.replace("\r", "").replace("\n", ""))); + Assert.assertEquals("decryptionResult should be RESULT_NOT_ENCRYPTED", + OpenPgpDecryptionResult.RESULT_NOT_ENCRYPTED, result.getDecryptionResult().getResult()); + Assert.assertEquals("signatureResult should be RESULT_VALID_CONFIRMED", + OpenPgpSignatureResult.RESULT_VALID_CONFIRMED, result.getSignatureResult().getResult()); + + OpenPgpMetadata metadata = result.getDecryptionMetadata(); + Assert.assertEquals("filesize must be correct", + out.toByteArray().length, metadata.getOriginalSize()); + + } + + } + + @Test + public void testAsymmetricSignDetached() { + + String plaintext = "dies ist ein plaintext ☭" + TestingUtils.genPassphrase(true); + byte[] detachedSignature; + + { // encrypt data with key + ByteArrayOutputStream out = new ByteArrayOutputStream(); + ByteArrayInputStream in = new ByteArrayInputStream(plaintext.getBytes()); + + PgpSignEncryptOperation op = new PgpSignEncryptOperation(RuntimeEnvironment.application, + new ProviderHelper(RuntimeEnvironment.application), null); + + InputData data = new InputData(in, in.available()); + PgpSignEncryptInputParcel input = new PgpSignEncryptInputParcel(); + + // only sign, as cleartext + input.setSignatureMasterKeyId(mStaticRing1.getMasterKeyId()); + input.setSignatureSubKeyId(KeyringTestingHelper.getSubkeyId(mStaticRing1, 1)); + input.setDetachedSignature(true); + + PgpSignEncryptResult result = op.execute(input, new CryptoInputParcel(mKeyPhrase1), data, out); + Assert.assertTrue("signing must succeed", result.success()); + + detachedSignature = result.getDetachedSignature(); + } + + { // verification should succeed + + ByteArrayOutputStream out = new ByteArrayOutputStream(); + ByteArrayInputStream in = new ByteArrayInputStream(plaintext.getBytes()); + InputData data = new InputData(in, in.available()); + + PgpDecryptVerifyOperation op = operationWithFakePassphraseCache(null, null, null); + PgpDecryptVerifyInputParcel input = new PgpDecryptVerifyInputParcel(); + input.setDetachedSignature(detachedSignature); + DecryptVerifyResult result = op.execute(input, new CryptoInputParcel(), data, out); + + Assert.assertTrue("verification must succeed", result.success()); + Assert.assertArrayEquals("verification text should equal plaintext (save for a newline)", + plaintext.getBytes(), out.toByteArray()); + Assert.assertEquals("decryptionResult should be RESULT_NOT_ENCRYPTED", + OpenPgpDecryptionResult.RESULT_NOT_ENCRYPTED, result.getDecryptionResult().getResult()); + Assert.assertEquals("signatureResult should be RESULT_VALID_CONFIRMED", + OpenPgpSignatureResult.RESULT_VALID_CONFIRMED, result.getSignatureResult().getResult()); + + // TODO should detached verify return any metadata? + // OpenPgpMetadata metadata = result.getDecryptionMetadata(); + // Assert.assertEquals("filesize must be correct", + // out.toByteArray().length, metadata.getOriginalSize()); + + } + + } + + @Test public void testAsymmetricEncryptDecrypt() { String plaintext = "dies ist ein plaintext ☭" + TestingUtils.genPassphrase(true); |