mirror of
https://github.com/pgpainless/pgpainless.git
synced 2024-12-24 11:57:59 +01:00
SIGNATURE VERIFICATION IN OPENPGP SUCKS BIG TIME
This commit is contained in:
parent
c40a7976e2
commit
9ba3fcd8b0
2 changed files with 128 additions and 92 deletions
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@ -48,6 +48,7 @@ import org.pgpainless.key.info.KeyRingInfo;
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import org.pgpainless.key.protection.SecretKeyRingProtector;
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import org.pgpainless.key.protection.UnlockSecretKey;
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import org.pgpainless.signature.SignatureUtils;
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import org.pgpainless.util.ArmorUtils;
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import org.pgpainless.util.Passphrase;
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import org.pgpainless.util.Tuple;
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import org.slf4j.Logger;
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@ -138,19 +139,25 @@ public class OpenPgpMessageInputStream extends InputStream {
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// Literal Data - the literal data content is the new input stream
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case LIT:
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automaton.next(InputAlphabet.LiteralData);
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signatures.commitNested();
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processLiteralData();
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break loop;
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// Compressed Data - the content contains another OpenPGP message
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case COMP:
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automaton.next(InputAlphabet.CompressedData);
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signatures.commitNested();
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processCompressedData();
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break loop;
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// One Pass Signature
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case OPS:
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automaton.next(InputAlphabet.OnePassSignatures);
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signatures.addOnePassSignature(readOnePassSignature());
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// signatures.addOnePassSignature(readOnePassSignature());
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PGPOnePassSignatureList onePassSignatureList = readOnePassSignatures();
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for (PGPOnePassSignature ops : onePassSignatureList) {
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signatures.addOnePassSignature(ops);
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}
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// signatures.addOnePassSignatures(readOnePassSignatures());
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break;
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@ -158,12 +165,15 @@ public class OpenPgpMessageInputStream extends InputStream {
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case SIG:
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boolean isSigForOPS = automaton.peekStack() == StackAlphabet.ops;
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automaton.next(InputAlphabet.Signatures);
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PGPSignature signature = readSignature();
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processSignature(signature, isSigForOPS);
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/*
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// PGPSignature signature = readSignature();
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// processSignature(signature, isSigForOPS);
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PGPSignatureList signatureList = readSignatures();
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processSignatures(signatureList, isSigForOPS);
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*/
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for (PGPSignature signature : signatureList) {
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processSignature(signature, isSigForOPS);
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}
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break;
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// Encrypted Data (ESKs and SED/SEIPD are parsed the same by BC)
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@ -178,7 +188,7 @@ public class OpenPgpMessageInputStream extends InputStream {
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throw new MissingDecryptionMethodException("No working decryption method found.");
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// Marker Packets need to be skipped and ignored
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// Marker Packets need to be skipped and ignored
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case MARKER:
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packetInputStream.readPacket(); // skip
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break;
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@ -193,8 +203,8 @@ public class OpenPgpMessageInputStream extends InputStream {
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case UATTR:
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throw new MalformedOpenPgpMessageException("Illegal Packet in Stream: " + nextPacket);
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// MDC packet is usually processed by PGPEncryptedDataList, so it is very likely we encounter this
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// packet out of order
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// MDC packet is usually processed by PGPEncryptedDataList, so it is very likely we encounter this
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// packet out of order
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case MDC:
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throw new MalformedOpenPgpMessageException("Unexpected Packet in Stream: " + nextPacket);
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@ -210,20 +220,12 @@ public class OpenPgpMessageInputStream extends InputStream {
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private void processSignature(PGPSignature signature, boolean isSigForOPS) {
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if (isSigForOPS) {
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signatures.addOnePassCorrespondingSignature(signature);
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signatures.addCorrespondingOnePassSignature(signature);
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} else {
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signatures.addPrependedSignature(signature);
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}
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}
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private void processSignatures(PGPSignatureList signatureList, boolean isSigForOPS) throws IOException {
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if (isSigForOPS) {
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signatures.addOnePassCorrespondingSignatures(signatureList);
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} else {
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signatures.addPrependedSignatures(signatureList);
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}
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}
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private void processCompressedData() throws IOException, PGPException {
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PGPCompressedData compressedData = new PGPCompressedData(packetInputStream);
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MessageMetadata.CompressedData compressionLayer = new MessageMetadata.CompressedData(
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@ -380,16 +382,17 @@ public class OpenPgpMessageInputStream extends InputStream {
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private PGPOnePassSignature readOnePassSignature()
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throws PGPException, IOException {
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return new PGPOnePassSignature(packetInputStream);
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//return new PGPOnePassSignature(packetInputStream);
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return null;
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}
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private PGPSignature readSignature()
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throws PGPException, IOException {
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return new PGPSignature(packetInputStream);
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//return new PGPSignature(packetInputStream);
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return null;
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}
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private PGPOnePassSignatureListWrapper readOnePassSignatures() throws IOException {
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List<Boolean> encapsulating = new ArrayList<>();
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private PGPOnePassSignatureList readOnePassSignatures() throws IOException {
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ByteArrayOutputStream buf = new ByteArrayOutputStream();
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BCPGOutputStream bcpgOut = new BCPGOutputStream(buf);
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int tag;
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@ -398,7 +401,6 @@ public class OpenPgpMessageInputStream extends InputStream {
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if (tag == PacketTags.ONE_PASS_SIGNATURE) {
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OnePassSignaturePacket sigPacket = (OnePassSignaturePacket) packet;
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byte[] bytes = sigPacket.getEncoded();
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encapsulating.add(bytes[bytes.length - 1] == 1);
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bcpgOut.write(bytes);
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}
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}
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@ -406,7 +408,7 @@ public class OpenPgpMessageInputStream extends InputStream {
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PGPObjectFactory objectFactory = ImplementationFactory.getInstance().getPGPObjectFactory(buf.toByteArray());
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PGPOnePassSignatureList signatureList = (PGPOnePassSignatureList) objectFactory.nextObject();
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return new PGPOnePassSignatureListWrapper(signatureList, encapsulating);
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return signatureList;
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}
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private PGPSignatureList readSignatures() throws IOException {
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@ -449,6 +451,7 @@ public class OpenPgpMessageInputStream extends InputStream {
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nestedInputStream.close();
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collectMetadata();
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nestedInputStream = null;
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signatures.popNested();
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try {
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consumePackets();
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@ -474,6 +477,7 @@ public class OpenPgpMessageInputStream extends InputStream {
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nestedInputStream.close();
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collectMetadata();
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nestedInputStream = null;
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signatures.popNested();
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try {
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consumePackets();
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@ -556,41 +560,29 @@ public class OpenPgpMessageInputStream extends InputStream {
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}
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}
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/**
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* Workaround for BC not exposing, whether an OPS is encapsulating or not.
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* TODO: Remove once our PR is merged
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*
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* @see <a href="https://github.com/bcgit/bc-java/pull/1232">PR against BC</a>
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*/
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private static class PGPOnePassSignatureListWrapper {
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private final PGPOnePassSignatureList list;
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private final List<Boolean> encapsulating;
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PGPOnePassSignatureListWrapper(PGPOnePassSignatureList signatures, List<Boolean> encapsulating) {
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this.list = signatures;
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this.encapsulating = encapsulating;
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}
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public int size() {
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return list.size();
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}
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}
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// TODO: In 'OPS LIT("Foo") SIG', OPS is only updated with "Foo"
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// In 'OPS[1] OPS LIT("Foo") SIG SIG', OPS[1] (nested) is updated with OPS LIT("Foo") SIG.
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// Therefore, we need to handle the innermost signature layer differently when updating with Literal data.
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// For this we might want to provide two update entries into the Signatures class, one for OpenPGP packets and one
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// for literal data. UUUUUGLY!!!!
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private static final class Signatures extends OutputStream {
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final ConsumerOptions options;
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final List<PGPSignature> detachedSignatures;
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final List<PGPSignature> prependedSignatures;
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final Stack<List<PGPOnePassSignature>> onePassSignatures;
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final List<PGPOnePassSignature> onePassSignatures;
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final Stack<List<PGPOnePassSignature>> opsUpdateStack;
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final List<PGPSignature> correspondingSignatures;
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boolean lastOpsIsContaining = true;
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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List<PGPOnePassSignature> opsCurrentNesting = new ArrayList<>();
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private Signatures(ConsumerOptions options) {
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this.options = options;
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this.detachedSignatures = new ArrayList<>();
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this.prependedSignatures = new ArrayList<>();
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this.onePassSignatures = new Stack<>();
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onePassSignatures.push(new ArrayList<>());
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this.onePassSignatures = new ArrayList<>();
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this.opsUpdateStack = new Stack<>();
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this.correspondingSignatures = new ArrayList<>();
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}
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@ -607,12 +599,6 @@ public class OpenPgpMessageInputStream extends InputStream {
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this.detachedSignatures.add(signature);
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}
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void addPrependedSignatures(PGPSignatureList signatures) {
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for (PGPSignature signature : signatures) {
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addPrependedSignature(signature);
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}
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}
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void addPrependedSignature(PGPSignature signature) {
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long keyId = SignatureUtils.determineIssuerKeyId(signature);
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PGPPublicKeyRing certificate = findCertificate(keyId);
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@ -621,27 +607,61 @@ public class OpenPgpMessageInputStream extends InputStream {
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}
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void addOnePassSignature(PGPOnePassSignature signature) {
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List<PGPOnePassSignature> list;
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if (lastOpsIsContaining) {
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list = new ArrayList<>();
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onePassSignatures.add(list);
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} else {
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list = onePassSignatures.get(onePassSignatures.size() - 1);
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}
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PGPPublicKeyRing certificate = findCertificate(signature.getKeyID());
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initialize(signature, certificate);
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list.add(signature);
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onePassSignatures.add(signature);
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// lastOpsIsContaining = signature.isContaining();
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opsCurrentNesting.add(signature);
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if (isContaining(signature)) {
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commitNested();
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}
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}
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void addOnePassCorrespondingSignatures(PGPSignatureList signatures) {
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for (PGPSignature signature : signatures) {
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correspondingSignatures.add(signature);
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boolean isContaining(PGPOnePassSignature ops) {
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try {
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byte[] bytes = ops.getEncoded();
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return bytes[bytes.length - 1] == 1;
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} catch (IOException e) {
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return false;
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}
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}
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void addCorrespondingOnePassSignature(PGPSignature signature) {
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for (PGPOnePassSignature onePassSignature : onePassSignatures) {
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if (onePassSignature.getKeyID() != signature.getKeyID()) {
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continue;
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}
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boolean verified = false;
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try {
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verified = onePassSignature.verify(signature);
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} catch (PGPException e) {
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log("Cannot verify OPS signature.", e);
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}
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log("One-Pass-Signature by " + Long.toHexString(onePassSignature.getKeyID()) + " is " + (verified ? "verified" : "unverified"));
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try {
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log(ArmorUtils.toAsciiArmoredString(out.toByteArray()));
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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void commitNested() {
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if (opsCurrentNesting.isEmpty()) {
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return;
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}
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log("Committing " + opsCurrentNesting.size() + " OPS sigs for updating");
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opsUpdateStack.push(opsCurrentNesting);
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opsCurrentNesting = new ArrayList<>();
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}
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void popNested() {
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log("Popping nested");
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opsUpdateStack.pop();
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}
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private void initialize(PGPSignature signature, PGPPublicKeyRing certificate, long keyId) {
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if (certificate == null) {
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// SHIT
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@ -680,14 +700,21 @@ public class OpenPgpMessageInputStream extends InputStream {
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}
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public void update(byte b) {
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if (!opsUpdateStack.isEmpty()) {
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log("Update");
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out.write(b);
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}
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for (PGPSignature prepended : prependedSignatures) {
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prepended.update(b);
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}
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for (List<PGPOnePassSignature> opss : onePassSignatures) {
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for (List<PGPOnePassSignature> opss : opsUpdateStack) {
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for (PGPOnePassSignature ops : opss) {
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ops.update(b);
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}
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}
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for (PGPSignature detached : detachedSignatures) {
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detached.update(b);
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}
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@ -699,9 +726,9 @@ public class OpenPgpMessageInputStream extends InputStream {
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try {
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verified = detached.verify();
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} catch (PGPException e) {
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LOGGER.debug("Cannot verify detached signature.", e);
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log("Cannot verify detached signature.", e);
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}
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LOGGER.debug("Detached Signature by " + Long.toHexString(detached.getKeyID()) + " is " + (verified ? "verified" : "unverified"));
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log("Detached Signature by " + Long.toHexString(detached.getKeyID()) + " is " + (verified ? "verified" : "unverified"));
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}
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for (PGPSignature prepended : prependedSignatures) {
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@ -709,22 +736,9 @@ public class OpenPgpMessageInputStream extends InputStream {
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try {
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verified = prepended.verify();
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} catch (PGPException e) {
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LOGGER.debug("Cannot verify prepended signature.", e);
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log("Cannot verify prepended signature.", e);
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}
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LOGGER.debug("Prepended Signature by " + Long.toHexString(prepended.getKeyID()) + " is " + (verified ? "verified" : "unverified"));
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}
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for (int i = 0; i < onePassSignatures.size(); i++) {
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PGPOnePassSignature ops = onePassSignatures.get(i);
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PGPSignature signature = correspondingSignatures.get(correspondingSignatures.size() - i - 1);
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boolean verified = false;
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try {
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verified = ops.verify(signature);
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} catch (PGPException e) {
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LOGGER.debug("Cannot verify OPS signature.", e);
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}
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LOGGER.debug("One-Pass-Signature by " + Long.toHexString(ops.getKeyID()) + " is " + (verified ? "verified" : "unverified"));
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log("Prepended Signature by " + Long.toHexString(prepended.getKeyID()) + " is " + (verified ? "verified" : "unverified"));
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}
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}
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@ -733,4 +747,18 @@ public class OpenPgpMessageInputStream extends InputStream {
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update((byte) b);
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}
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}
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static void log(String message) {
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LOGGER.debug(message);
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// CHECKSTYLE:OFF
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System.out.println(message);
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// CHECKSTYLE:ON
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}
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static void log(String message, Throwable e) {
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log(message);
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// CHECKSTYLE:OFF
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e.printStackTrace();
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// CHECKSTYLE:ON
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}
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}
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@ -4,6 +4,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertNull;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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@ -377,7 +378,8 @@ public class OpenPgpMessageInputStreamTest {
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@ParameterizedTest(name = "Process SIG COMP(LIT) using {0}")
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@MethodSource("provideMessageProcessors")
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public void testProcessSIG_COMP_LIT(Processor processor) throws PGPException, IOException {
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public void testProcessSIG_COMP_LIT(Processor processor)
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throws PGPException, IOException {
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PGPPublicKeyRing cert = PGPainless.extractCertificate(
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PGPainless.readKeyRing().secretKeyRing(KEY));
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@ -392,7 +394,8 @@ public class OpenPgpMessageInputStreamTest {
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@ParameterizedTest(name = "Process SENC(LIT) using {0}")
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@MethodSource("provideMessageProcessors")
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public void testProcessSENC_LIT(Processor processor) throws PGPException, IOException {
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public void testProcessSENC_LIT(Processor processor)
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throws PGPException, IOException {
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Tuple<String, MessageMetadata> result = processor.process(SENC_LIT, ConsumerOptions.get()
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.addDecryptionPassphrase(Passphrase.fromPassword(PASSPHRASE)));
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String plain = result.getA();
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@ -404,7 +407,8 @@ public class OpenPgpMessageInputStreamTest {
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@ParameterizedTest(name = "Process PENC(COMP(LIT)) using {0}")
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@MethodSource("provideMessageProcessors")
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public void testProcessPENC_COMP_LIT(Processor processor) throws IOException, PGPException {
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public void testProcessPENC_COMP_LIT(Processor processor)
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throws IOException, PGPException {
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PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(KEY);
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Tuple<String, MessageMetadata> result = processor.process(PENC_COMP_LIT, ConsumerOptions.get()
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.addDecryptionKey(secretKeys));
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@ -417,7 +421,8 @@ public class OpenPgpMessageInputStreamTest {
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@ParameterizedTest(name = "Process OPS LIT SIG using {0}")
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@MethodSource("provideMessageProcessors")
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public void testProcessOPS_LIT_SIG(Processor processor) throws IOException, PGPException {
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public void testProcessOPS_LIT_SIG(Processor processor)
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throws IOException, PGPException {
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PGPPublicKeyRing cert = PGPainless.extractCertificate(PGPainless.readKeyRing().secretKeyRing(KEY));
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Tuple<String, MessageMetadata> result = processor.process(OPS_LIT_SIG, ConsumerOptions.get()
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.addVerificationCert(cert));
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@ -428,7 +433,8 @@ public class OpenPgpMessageInputStreamTest {
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assertNull(metadata.getCompressionAlgorithm());
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}
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private static Tuple<String, MessageMetadata> processReadBuffered(String armoredMessage, ConsumerOptions options) throws PGPException, IOException {
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private static Tuple<String, MessageMetadata> processReadBuffered(String armoredMessage, ConsumerOptions options)
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throws PGPException, IOException {
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OpenPgpMessageInputStream in = get(armoredMessage, options);
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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Streams.pipeAll(in, out);
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@ -437,7 +443,8 @@ public class OpenPgpMessageInputStreamTest {
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return new Tuple<>(out.toString(), metadata);
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}
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private static Tuple<String, MessageMetadata> processReadSequential(String armoredMessage, ConsumerOptions options) throws PGPException, IOException {
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||||
private static Tuple<String, MessageMetadata> processReadSequential(String armoredMessage, ConsumerOptions options)
|
||||
throws PGPException, IOException {
|
||||
OpenPgpMessageInputStream in = get(armoredMessage, options);
|
||||
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
||||
|
||||
|
|
@ -451,7 +458,8 @@ public class OpenPgpMessageInputStreamTest {
|
|||
return new Tuple<>(out.toString(), metadata);
|
||||
}
|
||||
|
||||
private static OpenPgpMessageInputStream get(String armored, ConsumerOptions options) throws IOException, PGPException {
|
||||
private static OpenPgpMessageInputStream get(String armored, ConsumerOptions options)
|
||||
throws IOException, PGPException {
|
||||
ByteArrayInputStream bytesIn = new ByteArrayInputStream(armored.getBytes(StandardCharsets.UTF_8));
|
||||
ArmoredInputStream armorIn = ArmoredInputStreamFactory.get(bytesIn);
|
||||
OpenPgpMessageInputStream pgpIn = new OpenPgpMessageInputStream(armorIn, options);
|
||||
|
|
|
|||
Loading…
Reference in a new issue