1 files changed, 191 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java
new file mode 100644
index 000000000..f0693cc91
--- /dev/null
+++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java
@@ -0,0 +1,191 @@
+/* EncryptedEntry.java -- 
+   Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.crypto.keyring;
+
+import gnu.java.security.Registry;
+import gnu.javax.crypto.cipher.CipherFactory;
+import gnu.javax.crypto.cipher.IBlockCipher;
+import gnu.javax.crypto.mode.IMode;
+import gnu.javax.crypto.mode.ModeFactory;
+import gnu.javax.crypto.pad.IPad;
+import gnu.javax.crypto.pad.PadFactory;
+import gnu.javax.crypto.pad.WrongPaddingException;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.security.InvalidKeyException;
+import java.util.HashMap;
+import java.util.Iterator;
+
+public class EncryptedEntry extends MaskableEnvelopeEntry implements Registry
+{
+  public static final int TYPE = 0;
+
+  public EncryptedEntry(String cipher, String mode, Properties properties)
+  {
+    super(TYPE, properties);
+    if (cipher == null || mode == null)
+      throw new IllegalArgumentException("neither cipher nor mode can be null");
+    properties.put("cipher", cipher);
+    properties.put("mode", mode);
+    setMasked(false);
+  }
+
+  private EncryptedEntry()
+  {
+    super(TYPE, new Properties());
+    setMasked(true);
+  }
+
+  public static EncryptedEntry decode(DataInputStream in) throws IOException
+  {
+    EncryptedEntry entry = new EncryptedEntry();
+    entry.defaultDecode(in);
+    if (! entry.properties.containsKey("cipher"))
+      throw new MalformedKeyringException("no cipher");
+    if (! entry.properties.containsKey("cipher"))
+      throw new MalformedKeyringException("no cipher");
+    return entry;
+  }
+
+  public void decrypt(byte[] key, byte[] iv) throws IllegalArgumentException,
+      WrongPaddingException
+  {
+    if (! isMasked() || payload == null)
+      return;
+    IMode mode = getMode(key, iv, IMode.DECRYPTION);
+    IPad padding = null;
+    padding = PadFactory.getInstance("PKCS7");
+    padding.init(mode.currentBlockSize());
+    byte[] buf = new byte[payload.length];
+    int count = 0;
+    for (int i = 0; i < payload.length; i++)
+      {
+        mode.update(payload, count, buf, count);
+        count += mode.currentBlockSize();
+      }
+    int padlen = padding.unpad(buf, 0, buf.length);
+    int len = buf.length - padlen;
+    DataInputStream in = new DataInputStream(new ByteArrayInputStream(buf, 0, len));
+    try
+      {
+        decodeEnvelope(in);
+      }
+    catch (IOException ioe)
+      {
+        throw new IllegalArgumentException("decryption failed");
+      }
+    setMasked(false);
+    payload = null;
+  }
+
+  public void encrypt(byte[] key, byte[] iv) throws IOException
+  {
+    IMode mode = getMode(key, iv, IMode.ENCRYPTION);
+    IPad pad = PadFactory.getInstance("PKCS7");
+    pad.init(mode.currentBlockSize());
+    ByteArrayOutputStream bout = new ByteArrayOutputStream(1024);
+    DataOutputStream out2 = new DataOutputStream(bout);
+    for (Iterator it = entries.iterator(); it.hasNext();)
+      {
+        Entry entry = (Entry) it.next();
+        entry.encode(out2);
+      }
+    byte[] plaintext = bout.toByteArray();
+    byte[] padding = pad.pad(plaintext, 0, plaintext.length);
+    payload = new byte[plaintext.length + padding.length];
+    byte[] lastBlock = new byte[mode.currentBlockSize()];
+    int l = mode.currentBlockSize() - padding.length;
+    System.arraycopy(plaintext, plaintext.length - l, lastBlock, 0, l);
+    System.arraycopy(padding, 0, lastBlock, l, padding.length);
+    int count = 0;
+    while (count + mode.currentBlockSize() < plaintext.length)
+      {
+        mode.update(plaintext, count, payload, count);
+        count += mode.currentBlockSize();
+      }
+    mode.update(lastBlock, 0, payload, count);
+  }
+
+  public void encodePayload() throws IOException
+  {
+    if (payload == null)
+      throw new IOException("not encrypted");
+  }
+
+  private IMode getMode(byte[] key, byte[] iv, int state)
+  {
+    IBlockCipher cipher = CipherFactory.getInstance(properties.get("cipher"));
+    if (cipher == null)
+      throw new IllegalArgumentException("no such cipher: " + properties.get("cipher"));
+    int blockSize = cipher.defaultBlockSize();
+    if (properties.containsKey("block-size"))
+      {
+        try
+          {
+            blockSize = Integer.parseInt(properties.get("block-size"));
+          }
+        catch (NumberFormatException nfe)
+          {
+            throw new IllegalArgumentException("bad block size: "
+                                               + nfe.getMessage());
+          }
+      }
+    IMode mode = ModeFactory.getInstance(properties.get("mode"), cipher, blockSize);
+    if (mode == null)
+      throw new IllegalArgumentException("no such mode: " + properties.get("mode"));
+
+    HashMap modeAttr = new HashMap();
+    modeAttr.put(IMode.KEY_MATERIAL, key);
+    modeAttr.put(IMode.STATE, Integer.valueOf(state));
+    modeAttr.put(IMode.IV, iv);
+    try
+      {
+        mode.init(modeAttr);
+      }
+    catch (InvalidKeyException ike)
+      {
+        throw new IllegalArgumentException(ike.toString());
+      }
+    return mode;
+  }
+}