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Diffstat (limited to 'pg/src/main/j2me/org/bouncycastle/openpgp/PGPPBEEncryptedData.java')
-rw-r--r--pg/src/main/j2me/org/bouncycastle/openpgp/PGPPBEEncryptedData.java141
1 files changed, 0 insertions, 141 deletions
diff --git a/pg/src/main/j2me/org/bouncycastle/openpgp/PGPPBEEncryptedData.java b/pg/src/main/j2me/org/bouncycastle/openpgp/PGPPBEEncryptedData.java
deleted file mode 100644
index a24cdc47..00000000
--- a/pg/src/main/j2me/org/bouncycastle/openpgp/PGPPBEEncryptedData.java
+++ /dev/null
@@ -1,141 +0,0 @@
-package org.bouncycastle.openpgp;
-
-import java.io.EOFException;
-import java.io.InputStream;
-
-import org.bouncycastle.bcpg.BCPGInputStream;
-import org.bouncycastle.bcpg.InputStreamPacket;
-import org.bouncycastle.bcpg.SymmetricEncIntegrityPacket;
-import org.bouncycastle.bcpg.SymmetricKeyEncSessionPacket;
-import org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory;
-import org.bouncycastle.openpgp.operator.PGPDataDecryptor;
-import org.bouncycastle.util.io.TeeInputStream;
-
-/**
- * A password based encryption object.
- */
-public class PGPPBEEncryptedData
- extends PGPEncryptedData
-{
- SymmetricKeyEncSessionPacket keyData;
-
- PGPPBEEncryptedData(
- SymmetricKeyEncSessionPacket keyData,
- InputStreamPacket encData)
- {
- super(encData);
-
- this.keyData = keyData;
- }
-
- /**
- * Return the raw input stream for the data stream.
- *
- * @return InputStream
- */
- public InputStream getInputStream()
- {
- return encData.getInputStream();
- }
-
- /**
- * Return the symmetric key algorithm required to decrypt the data protected by this object.
- *
- * @param dataDecryptorFactory decryptor factory to use to recover the session data.
- * @return the integer encryption algorithm code.
- * @throws PGPException if the session data cannot be recovered.
- */
- public int getSymmetricAlgorithm(
- PBEDataDecryptorFactory dataDecryptorFactory)
- throws PGPException
- {
- byte[] key = dataDecryptorFactory.makeKeyFromPassPhrase(keyData.getEncAlgorithm(), keyData.getS2K());
- byte[] sessionData = dataDecryptorFactory.recoverSessionData(keyData.getEncAlgorithm(), key, keyData.getSecKeyData());
-
- return sessionData[0];
- }
-
- /**
- * Open an input stream which will provide the decrypted data protected by this object.
- *
- * @param dataDecryptorFactory decryptor factory to use to recover the session data and provide the stream.
- * @return the resulting input stream
- * @throws PGPException if the session data cannot be recovered or the stream cannot be created.
- */
- public InputStream getDataStream(
- PBEDataDecryptorFactory dataDecryptorFactory)
- throws PGPException
- {
- try
- {
- int keyAlgorithm = keyData.getEncAlgorithm();
- byte[] key = dataDecryptorFactory.makeKeyFromPassPhrase(keyAlgorithm, keyData.getS2K());
- boolean withIntegrityPacket = encData instanceof SymmetricEncIntegrityPacket;
-
- byte[] sessionData = dataDecryptorFactory.recoverSessionData(keyData.getEncAlgorithm(), key, keyData.getSecKeyData());
- byte[] sessionKey = new byte[sessionData.length - 1];
-
- System.arraycopy(sessionData, 1, sessionKey, 0, sessionKey.length);
-
- PGPDataDecryptor dataDecryptor = dataDecryptorFactory.createDataDecryptor(withIntegrityPacket, sessionData[0] & 0xff, sessionKey);
-
- encStream = new BCPGInputStream(dataDecryptor.getInputStream(encData.getInputStream()));
-
- if (withIntegrityPacket)
- {
- truncStream = new TruncatedStream(encStream);
-
- integrityCalculator = dataDecryptor.getIntegrityCalculator();
-
- encStream = new TeeInputStream(truncStream, integrityCalculator.getOutputStream());
- }
-
- byte[] iv = new byte[dataDecryptor.getBlockSize()];
- for (int i = 0; i != iv.length; i++)
- {
- int ch = encStream.read();
-
- if (ch < 0)
- {
- throw new EOFException("unexpected end of stream.");
- }
-
- iv[i] = (byte)ch;
- }
-
- int v1 = encStream.read();
- int v2 = encStream.read();
-
- if (v1 < 0 || v2 < 0)
- {
- throw new EOFException("unexpected end of stream.");
- }
-
-
- // Note: the oracle attack on "quick check" bytes is not deemed
- // a security risk for PBE (see PGPPublicKeyEncryptedData)
-
- boolean repeatCheckPassed = iv[iv.length - 2] == (byte) v1
- && iv[iv.length - 1] == (byte) v2;
-
- // Note: some versions of PGP appear to produce 0 for the extra
- // bytes rather than repeating the two previous bytes
- boolean zeroesCheckPassed = v1 == 0 && v2 == 0;
-
- if (!repeatCheckPassed && !zeroesCheckPassed)
- {
- throw new PGPDataValidationException("data check failed.");
- }
-
- return encStream;
- }
- catch (PGPException e)
- {
- throw e;
- }
- catch (Exception e)
- {
- throw new PGPException("Exception creating cipher", e);
- }
- }
-}