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This commit is contained in:
Paul Schaub 2022-10-27 13:55:58 +02:00
parent d5fcb3bc29
commit d94fa6b74b
2 changed files with 13 additions and 3 deletions
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14
pgpainless-core/src/main/java/org/pgpainless/decryption_verification/OpenPgpMessageInputStream.java
View file

@ -116,6 +116,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
/**
* Create an {@link OpenPgpMessageInputStream} suitable for decryption and verification of
* OpenPGP messages and signatures.
* This factory method takes a custom {@link Policy} instead of using the global policy object.
*
* @param inputStream underlying input stream containing the OpenPGP message
* @param options options for consuming the message
@ -161,7 +162,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
armorIn, options, metadata, policy);
}
} else {
throw new AssertionError("Huh?");
throw new AssertionError("Cannot deduce type of data.");
}
}
@ -212,6 +213,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
switch (type) {
// Binary OpenPGP Message
case standard:
// tee out packet bytes for signature verification
packetInputStream = new TeeBCPGInputStream(BCPGInputStream.wrap(inputStream), this.signatures);
@ -220,6 +222,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
consumePackets();
break;
// Cleartext Signature Framework (probably signed message)
case cleartext_signed:
resultBuilder.setCleartextSigned();
MultiPassStrategy multiPassStrategy = options.getMultiPassStrategy();
@ -235,6 +238,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
nestedInputStream = new TeeInputStream(multiPassStrategy.getMessageInputStream(), this.signatures);
break;
// Non-OpenPGP Data (e.g. detached signature verification)
case non_openpgp:
packetInputStream = null;
nestedInputStream = new TeeInputStream(inputStream, this.signatures);
@ -265,7 +269,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
return;
}
loop: // we break this when we go deeper.
loop: // we break this when we enter nested packets and later resume
while ((nextPacket = packetInputStream.nextPacketTag()) != null) {
signatures.nextPacket(nextPacket);
switch (nextPacket) {
@ -296,6 +300,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
case SED:
case SEIPD:
if (processEncryptedData()) {
// Successfully decrypted, enter nested content
break loop;
}
@ -336,10 +341,12 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
LOGGER.debug("Literal Data Packet at depth " + metadata.depth + " encountered");
syntaxVerifier.next(InputSymbol.LiteralData);
PGPLiteralData literalData = packetInputStream.readLiteralData();
// Extract Metadata
this.metadata.setChild(new MessageMetadata.LiteralData(
literalData.getFileName(),
literalData.getModificationTime(),
StreamEncoding.requireFromCode(literalData.getFormat())));
nestedInputStream = literalData.getDataStream();
}
@ -347,9 +354,11 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
syntaxVerifier.next(InputSymbol.CompressedData);
signatures.enterNesting();
PGPCompressedData compressedData = packetInputStream.readCompressedData();
// Extract Metadata
MessageMetadata.CompressedData compressionLayer = new MessageMetadata.CompressedData(
CompressionAlgorithm.fromId(compressedData.getAlgorithm()),
metadata.depth + 1);
LOGGER.debug("Compressed Data Packet (" + compressionLayer.algorithm + ") at depth " + metadata.depth + " encountered");
InputStream decompressed = compressedData.getDataStream();
nestedInputStream = new OpenPgpMessageInputStream(decompressed, options, compressionLayer, policy);
@ -374,6 +383,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
LOGGER.debug("Unsupported Signature at depth " + metadata.depth + " encountered.", e);
return;
}
long keyId = SignatureUtils.determineIssuerKeyId(signature);
if (isSigForOPS) {
LOGGER.debug("Signature Packet corresponding to One-Pass-Signature by key " +

2
pgpainless-core/src/main/java/org/pgpainless/decryption_verification/syntax_check/PDA.java
View file

@ -30,7 +30,7 @@ public class PDA {
private State state;
/**
*
* Default constructor which initializes the PDA to work with the {@link OpenPgpMessageSyntax}.
*/
public PDA() {
this(new OpenPgpMessageSyntax(), State.OpenPgpMessage, terminus, msg);