mirror of
https://github.com/moparisthebest/open-keychain
synced 2024-08-13 15:53:53 -04:00
encapsulate creation of OpenPgpSignatureResult objects inside OpenPgpSignatureResultBuilder to better constraint its output when processing with PgpDecryptVerify
This commit is contained in:
Dominik Schürmann
parent
e80d070aa9
commit
a57fc8a47a
@ -20,7 +20,6 @@ package org.sufficientlysecure.keychain.pgp;
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import android.net.Uri;
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import org.openintents.openpgp.OpenPgpSignatureResult;
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import org.spongycastle.bcpg.ArmoredInputStream;
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import org.spongycastle.bcpg.SignatureSubpacketTags;
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import org.spongycastle.openpgp.PGPCompressedData;
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@ -388,7 +387,7 @@ public class PgpDecryptVerify {
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PGPObjectFactory plainFact = new PGPObjectFactory(clear);
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Object dataChunk = plainFact.nextObject();
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PGPOnePassSignature signature = null;
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OpenPgpSignatureResult signatureResult = null;
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OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder();
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PGPPublicKey signatureKey = null;
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int signatureIndex = -1;
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boolean isSignatureKeyCertified = false;
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@ -406,7 +405,8 @@ public class PgpDecryptVerify {
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if (dataChunk instanceof PGPOnePassSignatureList) {
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updateProgress(R.string.progress_processing_signature, currentProgress, 100);
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signatureResult = new OpenPgpSignatureResult();
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signatureResultBuilder.signatureAvailable(true);
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PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk;
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// go through all signatures
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@ -434,8 +434,11 @@ public class PgpDecryptVerify {
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}
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signature = sigList.get(signatureIndex);
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signatureResult.setUserId(PgpKeyHelper.getMainUserId(signatureKey));
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signatureResult.setKeyId(signature.getKeyID());
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signatureResultBuilder.knownKey(true);
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signatureResultBuilder.userId(PgpKeyHelper.getMainUserId(signatureKey));
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signatureResultBuilder.keyId(signature.getKeyID());
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JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
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new JcaPGPContentVerifierBuilderProvider()
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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@ -450,12 +453,11 @@ public class PgpDecryptVerify {
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isSignatureKeyCertified = ((Long) data > 0);
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} else {
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// no key in our database -> return "unknown pub key" status including the first key id
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if (!sigList.isEmpty()) {
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signatureResult.setKeyId(sigList.get(0).getKeyID());
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}
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signatureResultBuilder.knownKey(false);
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Log.d(Constants.TAG, "SIGNATURE_UNKNOWN_PUB_KEY");
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signatureResult.setStatus(OpenPgpSignatureResult.SIGNATURE_UNKNOWN_PUB_KEY);
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if (!sigList.isEmpty()) {
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signatureResultBuilder.keyId(sigList.get(0).getKeyID());
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}
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}
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dataChunk = plainFact.nextObject();
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@ -494,7 +496,7 @@ public class PgpDecryptVerify {
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signature.update(buffer, 0, n);
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} catch (SignatureException e) {
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Log.d(Constants.TAG, "SIGNATURE_ERROR");
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signatureResult.setStatus(OpenPgpSignatureResult.SIGNATURE_ERROR);
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signatureResultBuilder.validSignature(false);
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signature = null;
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}
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}
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@ -519,15 +521,15 @@ public class PgpDecryptVerify {
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// these are not cleartext signatures!
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// TODO: what about binary signatures?
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signatureResult.setSignatureOnly(false);
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signatureResultBuilder.signatureOnly(false);
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// Verify signature and check binding signatures
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boolean validSignature = signature.verify(messageSignature);
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boolean validKeyBinding = verifyKeyBinding(messageSignature, signatureKey);
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signatureResult.setStatus(
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getSignatureResultStatus(validSignature, validKeyBinding, isSignatureKeyCertified)
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);
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signatureResultBuilder.validSignature(validSignature);
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signatureResultBuilder.validKeyBinding(validKeyBinding);
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signatureResultBuilder.signatureKeyCertified(isSignatureKeyCertified);
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}
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}
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@ -550,7 +552,7 @@ public class PgpDecryptVerify {
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updateProgress(R.string.progress_done, 100, 100);
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result.setSignatureResult(signatureResult);
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result.setSignatureResult(signatureResultBuilder.build());
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return result;
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}
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@ -564,9 +566,9 @@ public class PgpDecryptVerify {
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private PgpDecryptVerifyResult verifyCleartextSignature(ArmoredInputStream aIn)
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throws IOException, PGPException, SignatureException, InvalidDataException {
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PgpDecryptVerifyResult result = new PgpDecryptVerifyResult();
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OpenPgpSignatureResult signatureResult = new OpenPgpSignatureResult();
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OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder();
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// cleartext signatures are never encrypted ;)
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signatureResult.setSignatureOnly(true);
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signatureResultBuilder.signatureOnly(true);
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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@ -600,6 +602,8 @@ public class PgpDecryptVerify {
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throw new InvalidDataException();
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}
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signatureResultBuilder.signatureAvailable(true);
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// go through all signatures
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// and find out for which signature we have a key in our database
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Long masterKeyId = null;
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@ -630,8 +634,11 @@ public class PgpDecryptVerify {
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}
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signature = sigList.get(signatureIndex);
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signatureResult.setUserId(PgpKeyHelper.getMainUserId(signatureKey));
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signatureResult.setKeyId(signature.getKeyID());
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signatureResultBuilder.knownKey(true);
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signatureResultBuilder.userId(PgpKeyHelper.getMainUserId(signatureKey));
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signatureResultBuilder.keyId(signature.getKeyID());
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JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
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new JcaPGPContentVerifierBuilderProvider()
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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@ -646,12 +653,11 @@ public class PgpDecryptVerify {
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isSignatureKeyCertified = ((Long) data > 0);
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} else {
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// no key in our database -> return "unknown pub key" status including the first key id
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if (!sigList.isEmpty()) {
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signatureResult.setKeyId(sigList.get(0).getKeyID());
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}
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signatureResultBuilder.knownKey(false);
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Log.d(Constants.TAG, "SIGNATURE_UNKNOWN_PUB_KEY");
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signatureResult.setStatus(OpenPgpSignatureResult.SIGNATURE_UNKNOWN_PUB_KEY);
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if (!sigList.isEmpty()) {
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signatureResultBuilder.keyId(sigList.get(0).getKeyID());
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}
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}
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if (signature != null) {
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@ -684,41 +690,17 @@ public class PgpDecryptVerify {
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boolean validSignature = signature.verify();
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boolean validKeyBinding = verifyKeyBinding(signature, signatureKey);
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signatureResult.setStatus(
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getSignatureResultStatus(validSignature, validKeyBinding, isSignatureKeyCertified)
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);
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signatureResultBuilder.validSignature(validSignature);
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signatureResultBuilder.validKeyBinding(validKeyBinding);
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signatureResultBuilder.signatureKeyCertified(isSignatureKeyCertified);
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}
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result.setSignatureResult(signatureResult);
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result.setSignatureResult(signatureResultBuilder.build());
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updateProgress(R.string.progress_done, 100, 100);
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return result;
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}
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/**
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* Returns SIGNATURE_SUCCESS_CERTIFIED, SIGNATURE_SUCCESS_UNCERTIFIED, or SIGNATURE_ERROR
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*
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* @param validSignature
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* @param validKeyBinding
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* @param isSignatureKeyCertified
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* @return
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*/
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private int getSignatureResultStatus(boolean validSignature, boolean validKeyBinding, boolean isSignatureKeyCertified) {
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if (validKeyBinding && validSignature) {
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if (isSignatureKeyCertified) {
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Log.d(Constants.TAG, "SIGNATURE_SUCCESS_CERTIFIED");
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return OpenPgpSignatureResult.SIGNATURE_SUCCESS_CERTIFIED;
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} else {
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Log.d(Constants.TAG, "SIGNATURE_SUCCESS_UNCERTIFIED");
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return OpenPgpSignatureResult.SIGNATURE_SUCCESS_UNCERTIFIED;
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}
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} else {
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Log.e(Constants.TAG, "Error!\nvalidKeyBinding: " + validKeyBinding
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+ "\nvalidSignature: " + validSignature);
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return OpenPgpSignatureResult.SIGNATURE_ERROR;
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}
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}
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private boolean verifyKeyBinding(PGPSignature signature, PGPPublicKey signatureKey) {
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long signatureKeyId = signature.getKeyID();
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boolean validKeyBinding = false;
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