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Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerify.java')
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerify.java84
1 files changed, 55 insertions, 29 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerify.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerify.java
index fd3d41f93..4651f12d4 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerify.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerify.java
@@ -40,11 +40,10 @@ 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.PublicKeyDataDecryptorFactory;
+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.openpgp.operator.jcajce.NfcSyncPublicKeyDataDecryptorFactoryBuilder;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.operations.BaseOperation;
@@ -538,24 +537,33 @@ public class PgpDecryptVerify extends BaseOperation<PgpDecryptVerifyInputParcel>
currentProgress += 2;
updateProgress(R.string.progress_preparing_streams, currentProgress, 100);
- try {
- PublicKeyDataDecryptorFactory decryptorFactory
- = secretEncryptionKey.getDecryptorFactory(cryptoInput);
- try {
- clear = encryptedDataAsymmetric.getDataStream(decryptorFactory);
- } catch (PGPKeyValidationException | ArrayIndexOutOfBoundsException e) {
- log.add(LogType.MSG_DC_ERROR_CORRUPT_DATA, indent + 1);
- return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
- }
+ CachingDataDecryptorFactory decryptorFactory
+ = secretEncryptionKey.getCachingDecryptorFactory(cryptoInput);
+
+ // special case: if the decryptor does not have a session key cached for this encrypted
+ // data, and can't actually decrypt on its own, return a pending intent
+ if (!decryptorFactory.canDecrypt()
+ && !decryptorFactory.hasCachedSessionData(encryptedDataAsymmetric)) {
- symmetricEncryptionAlgo = encryptedDataAsymmetric.getSymmetricAlgorithm(decryptorFactory);
- } catch (NfcSyncPublicKeyDataDecryptorFactoryBuilder.NfcInteractionNeeded e) {
log.add(LogType.MSG_DC_PENDING_NFC, indent + 1);
return new DecryptVerifyResult(log, RequiredInputParcel.createNfcDecryptOperation(
secretEncryptionKey.getRing().getMasterKeyId(),
- secretEncryptionKey.getKeyId(), e.encryptedSessionKey
+ secretEncryptionKey.getKeyId(), encryptedDataAsymmetric.getSessionKey()[0]
));
+
}
+
+ try {
+ clear = encryptedDataAsymmetric.getDataStream(decryptorFactory);
+ } catch (PGPKeyValidationException | ArrayIndexOutOfBoundsException e) {
+ log.add(LogType.MSG_DC_ERROR_CORRUPT_DATA, indent + 1);
+ return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
+ }
+
+ symmetricEncryptionAlgo = encryptedDataAsymmetric.getSymmetricAlgorithm(decryptorFactory);
+
+ cryptoInput.addCryptoData(decryptorFactory.getCachedSessionKeys());
+
encryptedData = encryptedDataAsymmetric;
} else {
// there wasn't even any useful data
@@ -662,9 +670,6 @@ public class PgpDecryptVerify extends BaseOperation<PgpDecryptVerifyInputParcel>
PGPLiteralData literalData = (PGPLiteralData) dataChunk;
- // reported size may be null if partial packets are involved (highly unlikely though)
- Long originalSize = literalData.getDataLengthIfAvailable();
-
String originalFilename = literalData.getFileName();
String mimeType = null;
if (literalData.getFormat() == PGPLiteralData.TEXT
@@ -687,12 +692,6 @@ public class PgpDecryptVerify extends BaseOperation<PgpDecryptVerifyInputParcel>
}
}
- metadata = new OpenPgpMetadata(
- originalFilename,
- mimeType,
- literalData.getModificationTime().getTime(),
- originalSize == null ? 0 : originalSize);
-
if (!"".equals(originalFilename)) {
log.add(LogType.MSG_DC_CLEAR_META_FILE, indent + 1, originalFilename);
}
@@ -700,15 +699,26 @@ public class PgpDecryptVerify extends BaseOperation<PgpDecryptVerifyInputParcel>
mimeType);
log.add(LogType.MSG_DC_CLEAR_META_TIME, indent + 1,
new Date(literalData.getModificationTime().getTime()).toString());
- if (originalSize != null) {
- log.add(LogType.MSG_DC_CLEAR_META_SIZE, indent + 1,
- Long.toString(originalSize));
- } else {
- log.add(LogType.MSG_DC_CLEAR_META_SIZE_UNKNOWN, indent + 1);
- }
// return here if we want to decrypt the metadata only
if (input.isDecryptMetadataOnly()) {
+
+ // this operation skips the entire stream to find the data length!
+ Long originalSize = literalData.findDataLength();
+
+ if (originalSize != null) {
+ log.add(LogType.MSG_DC_CLEAR_META_SIZE, indent + 1,
+ Long.toString(originalSize));
+ } else {
+ log.add(LogType.MSG_DC_CLEAR_META_SIZE_UNKNOWN, indent + 1);
+ }
+
+ metadata = new OpenPgpMetadata(
+ originalFilename,
+ mimeType,
+ literalData.getModificationTime().getTime(),
+ originalSize == null ? 0 : originalSize);
+
log.add(LogType.MSG_DC_OK_META_ONLY, indent);
DecryptVerifyResult result =
new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log);
@@ -757,6 +767,21 @@ public class PgpDecryptVerify extends BaseOperation<PgpDecryptVerifyInputParcel>
// TODO: slow annealing to fake a progress?
}
+ // after going through the stream, size should be available
+ Long originalSize = literalData.getDataLengthIfAvailable();
+ if (originalSize != null) {
+ log.add(LogType.MSG_DC_CLEAR_META_SIZE, indent + 1,
+ Long.toString(originalSize));
+ } else {
+ log.add(LogType.MSG_DC_CLEAR_META_SIZE_UNKNOWN, indent + 1);
+ }
+
+ metadata = new OpenPgpMetadata(
+ originalFilename,
+ mimeType,
+ literalData.getModificationTime().getTime(),
+ originalSize == null ? 0 : originalSize);
+
if (signature != null) {
updateProgress(R.string.progress_verifying_signature, 90, 100);
log.add(LogType.MSG_DC_CLEAR_SIGNATURE_CHECK, indent);
@@ -818,6 +843,7 @@ public class PgpDecryptVerify extends BaseOperation<PgpDecryptVerifyInputParcel>
// Return a positive result, with metadata and verification info
DecryptVerifyResult result =
new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log);
+ result.setCachedCryptoInputParcel(cryptoInput);
result.setDecryptMetadata(metadata);
result.setSignatureResult(signatureResultBuilder.build());
result.setCharset(charset);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 23:32:03 +0000