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Code Issues Releases Wiki Activity

Improve readability of DecryptionStreamFactory

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This commit is contained in:
Paul Schaub 2021-09-06 17:15:17 +02:00
parent 90e0f74aea
commit ba0e5eb3fe
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
1 changed files with 12 additions and 8 deletions
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20
pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionStreamFactory.java
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@ -87,6 +87,13 @@ public final class DecryptionStreamFactory {
private final Map<OpenPgpV4Fingerprint, OnePassSignature> verifiableOnePassSignatures = new HashMap<>(); private final Map<OpenPgpV4Fingerprint, OnePassSignature> verifiableOnePassSignatures = new HashMap<>();
private IntegrityProtectedInputStream integrityProtectedEncryptedInputStream; private IntegrityProtectedInputStream integrityProtectedEncryptedInputStream;
public static DecryptionStream create(@Nonnull InputStream inputStream,
@Nonnull ConsumerOptions options)
throws PGPException, IOException {
DecryptionStreamFactory factory = new DecryptionStreamFactory(options);
return factory.parseOpenPGPDataAndCreateDecryptionStream(inputStream);
}
public DecryptionStreamFactory(ConsumerOptions options) { public DecryptionStreamFactory(ConsumerOptions options) {
this.options = options; this.options = options;
initializeDetachedSignatures(options.getDetachedSignatures()); initializeDetachedSignatures(options.getDetachedSignatures());
@ -111,12 +118,9 @@ public final class DecryptionStreamFactory {
} }
} }
public static DecryptionStream create(@Nonnull InputStream inputStream, private DecryptionStream parseOpenPGPDataAndCreateDecryptionStream(InputStream inputStream) throws IOException, PGPException {
@Nonnull ConsumerOptions options)
throws PGPException, IOException {
BufferedInputStream bufferedIn = new BufferedInputStream(inputStream); BufferedInputStream bufferedIn = new BufferedInputStream(inputStream);
bufferedIn.mark(200); bufferedIn.mark(200);
DecryptionStreamFactory factory = new DecryptionStreamFactory(options);
InputStream decoderStream = PGPUtil.getDecoderStream(bufferedIn); InputStream decoderStream = PGPUtil.getDecoderStream(bufferedIn);
decoderStream = CRCingArmoredInputStreamWrapper.possiblyWrap(decoderStream); decoderStream = CRCingArmoredInputStreamWrapper.possiblyWrap(decoderStream);
@ -135,7 +139,7 @@ public final class DecryptionStreamFactory {
try { try {
// Parse OpenPGP message // Parse OpenPGP message
inputStream = factory.processPGPPackets(objectFactory, 1); inputStream = processPGPPackets(objectFactory, 1);
} catch (EOFException e) { } catch (EOFException e) {
throw e; throw e;
} }
@ -157,7 +161,7 @@ public final class DecryptionStreamFactory {
} }
} }
return new DecryptionStream(inputStream, options, factory.resultBuilder, factory.integrityProtectedEncryptedInputStream, return new DecryptionStream(inputStream, options, resultBuilder, integrityProtectedEncryptedInputStream,
(decoderStream instanceof ArmoredInputStream) ? decoderStream : null); (decoderStream instanceof ArmoredInputStream) ? decoderStream : null);
} }
@ -187,7 +191,7 @@ public final class DecryptionStreamFactory {
private InputStream processPGPEncryptedDataList(PGPEncryptedDataList pgpEncryptedDataList, int depth) private InputStream processPGPEncryptedDataList(PGPEncryptedDataList pgpEncryptedDataList, int depth)
throws PGPException, IOException { throws PGPException, IOException {
LOGGER.debug("Depth {}: Encountered PGPEncryptedDataList", depth); LOGGER.debug("Depth {}: Encountered PGPEncryptedDataList", depth);
InputStream decryptedDataStream = decrypt(pgpEncryptedDataList); InputStream decryptedDataStream = decryptSessionKey(pgpEncryptedDataList);
InputStream decodedDataStream = PGPUtil.getDecoderStream(decryptedDataStream); InputStream decodedDataStream = PGPUtil.getDecoderStream(decryptedDataStream);
PGPObjectFactory factory = new PGPObjectFactory(decodedDataStream, keyFingerprintCalculator); PGPObjectFactory factory = new PGPObjectFactory(decodedDataStream, keyFingerprintCalculator);
return processPGPPackets(factory, ++depth); return processPGPPackets(factory, ++depth);
@ -230,7 +234,7 @@ public final class DecryptionStreamFactory {
objectFactory, verifiableOnePassSignatures, options, resultBuilder); objectFactory, verifiableOnePassSignatures, options, resultBuilder);
} }
private InputStream decrypt(@Nonnull PGPEncryptedDataList encryptedDataList) private InputStream decryptSessionKey(@Nonnull PGPEncryptedDataList encryptedDataList)
throws PGPException { throws PGPException {
Iterator<PGPEncryptedData> encryptedDataIterator = encryptedDataList.getEncryptedDataObjects(); Iterator<PGPEncryptedData> encryptedDataIterator = encryptedDataList.getEncryptedDataObjects();
if (!encryptedDataIterator.hasNext()) { if (!encryptedDataIterator.hasNext()) {