Imported GNU Classpath 0.90

       * scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore.
       * gnu/classpath/jdwp/VMFrame.java (SIZE): New constant.
       * java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5.
       * java/lang/Math.java: New override file.
       * java/lang/Character.java: Merged from Classpath.
       (start, end): Now 'int's.
       (canonicalName): New field.
       (CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants.
       (UnicodeBlock): Added argument.
       (of): New overload.
       (forName): New method.
       Updated unicode blocks.
       (sets): Updated.
       * sources.am: Regenerated.
       * Makefile.in: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@111942 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 352 insertions, 0 deletions

diff --git a/libjava/classpath/gnu/javax/crypto/mode/EAX.java b/libjava/classpath/gnu/javax/crypto/mode/EAX.java
new file mode 100644
index 00000000000..bf260989825
--- /dev/null
+++ b/libjava/classpath/gnu/javax/crypto/mode/EAX.java
@@ -0,0 +1,352 @@
+/* EAX.java -- 
+   Copyright (C) 2004, 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.mode;
+
+import gnu.java.security.Registry;
+
+import gnu.javax.crypto.cipher.IBlockCipher;
+import gnu.javax.crypto.mac.IMac;
+import gnu.javax.crypto.mac.MacFactory;
+
+import java.security.InvalidKeyException;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+ * <p>A conventional two-pass authenticated-encrypted mode, EAX. EAX is a
+ * <i>Authenticated Encryption with Additional Data</i> (<b>AEAD</b>) scheme,
+ * which provides protection and authentication for the message, and provides
+ * authentication of an (optional) header. EAX is composed of the counter mode
+ * (CTR) and the one-key CBC MAC (OMAC).
+ *
+ * <p>This class makes full use of the {@link IAuthenticatedMode} interface,
+ * that is, all methods of both {@link IMode} and {@link IMac} can be used
+ * as specified in the {@link IAuthenticatedMode} interface.
+ *
+ * <p>References:</p>
+ * <ol>
+ * <li>M. Bellare, P. Rogaway, and D. Wagner; <a
+ * href="http://www.cs.berkeley.edu/~daw/papers/eprint-short-ae.pdf">A
+ * Conventional Authenticated-Encryption Mode</a>.</li>
+ * </ol>
+ */
+public class EAX implements IAuthenticatedMode
+{
+
+  // Constants and fields.
+  // ------------------------------------------------------------------------
+
+  /** The tag size, in bytes. */
+  private int tagSize;
+
+  /** The nonce OMAC instance. */
+  private IMac nonceOmac;
+
+  /** The header OMAC instance. */
+  private IMac headerOmac;
+
+  /** The message OMAC instance. */
+  private IMac msgOmac;
+
+  /** The CTR instance. */
+  private IMode ctr;
+
+  /** The direction state (encrypting or decrypting). */
+  private int state;
+
+  /** Whether we're initialized or not. */
+  private boolean init;
+
+  /** The cipher block size. */
+  private int cipherBlockSize;
+
+  /** The cipher. */
+  private IBlockCipher cipher;
+
+  /** The [t]_n array. */
+  private byte[] t_n;
+
+  private static boolean valid = false;
+
+  // Constructor.
+  // ------------------------------------------------------------------------
+
+  public EAX(IBlockCipher cipher, int cipherBlockSize)
+  {
+    this.cipher = cipher;
+    this.cipherBlockSize = cipherBlockSize;
+    String name = cipher.name();
+    int i = name.indexOf('-');
+    if (i >= 0)
+      {
+        name = name.substring(0, i);
+      }
+    String omacname = Registry.OMAC_PREFIX + name;
+    nonceOmac = MacFactory.getInstance(omacname);
+    headerOmac = MacFactory.getInstance(omacname);
+    msgOmac = MacFactory.getInstance(omacname);
+    ctr = ModeFactory.getInstance(Registry.CTR_MODE, cipher, cipherBlockSize);
+    t_n = new byte[cipherBlockSize];
+    init = false;
+  }
+
+  // IMode instance methods.
+  // ------------------------------------------------------------------------
+
+  public Object clone()
+  {
+    return new EAX((IBlockCipher) cipher.clone(), cipherBlockSize);
+  }
+
+  public String name()
+  {
+    return Registry.EAX_MODE + "(" + cipher.name() + ")";
+  }
+
+  public int defaultBlockSize()
+  {
+    return ctr.defaultBlockSize();
+  }
+
+  public int defaultKeySize()
+  {
+    return ctr.defaultKeySize();
+  }
+
+  public Iterator blockSizes()
+  {
+    return ctr.blockSizes();
+  }
+
+  public Iterator keySizes()
+  {
+    return ctr.keySizes();
+  }
+
+  public void init(Map attrib) throws InvalidKeyException
+  {
+    byte[] nonce = (byte[]) attrib.get(IV);
+    if (nonce == null)
+      {
+        throw new IllegalArgumentException("no nonce provided");
+      }
+    byte[] key = (byte[]) attrib.get(KEY_MATERIAL);
+    if (key == null)
+      {
+        throw new IllegalArgumentException("no key provided");
+      }
+
+    Arrays.fill(t_n, (byte) 0);
+
+    nonceOmac.reset();
+    nonceOmac.init(Collections.singletonMap(MAC_KEY_MATERIAL, key));
+    nonceOmac.update(t_n, 0, t_n.length);
+    nonceOmac.update(nonce, 0, nonce.length);
+    byte[] N = nonceOmac.digest();
+    nonceOmac.reset();
+    nonceOmac.update(t_n, 0, t_n.length);
+    nonceOmac.update(nonce, 0, nonce.length);
+
+    t_n[t_n.length - 1] = 1;
+    headerOmac.reset();
+    headerOmac.init(Collections.singletonMap(MAC_KEY_MATERIAL, key));
+    headerOmac.update(t_n, 0, t_n.length);
+
+    t_n[t_n.length - 1] = 2;
+    msgOmac.reset();
+    msgOmac.init(Collections.singletonMap(MAC_KEY_MATERIAL, key));
+    msgOmac.update(t_n, 0, t_n.length);
+
+    Integer modeSize = (Integer) attrib.get(MODE_BLOCK_SIZE);
+    if (modeSize == null)
+      {
+        modeSize = new Integer(cipherBlockSize);
+      }
+    HashMap ctrAttr = new HashMap();
+    ctrAttr.put(KEY_MATERIAL, key);
+    ctrAttr.put(IV, N);
+    ctrAttr.put(STATE, new Integer(ENCRYPTION));
+    ctrAttr.put(MODE_BLOCK_SIZE, modeSize);
+    ctr.reset();
+    ctr.init(ctrAttr);
+
+    Integer st = (Integer) attrib.get(STATE);
+    if (st != null)
+      {
+        state = st.intValue();
+        if (state != ENCRYPTION && state != DECRYPTION)
+          {
+            throw new IllegalArgumentException("invalid state");
+          }
+      }
+    else
+      {
+        state = ENCRYPTION;
+      }
+
+    Integer ts = (Integer) attrib.get(TRUNCATED_SIZE);
+    if (ts != null)
+      {
+        tagSize = ts.intValue();
+      }
+    else
+      {
+        tagSize = cipherBlockSize;
+      }
+    if (tagSize < 0 || tagSize > cipherBlockSize)
+      {
+        throw new IllegalArgumentException("tag size out of range");
+      }
+    init = true;
+  }
+
+  public int currentBlockSize()
+  {
+    return ctr.currentBlockSize();
+  }
+
+  public void encryptBlock(byte[] in, int inOff, byte[] out, int outOff)
+  {
+    if (!init)
+      {
+        throw new IllegalStateException("not initialized");
+      }
+    if (state != ENCRYPTION)
+      {
+        throw new IllegalStateException("not encrypting");
+      }
+    ctr.update(in, inOff, out, outOff);
+    msgOmac.update(out, outOff, ctr.currentBlockSize());
+  }
+
+  public void decryptBlock(byte[] in, int inOff, byte[] out, int outOff)
+  {
+    if (!init)
+      {
+        throw new IllegalStateException("not initialized");
+      }
+    if (state != DECRYPTION)
+      {
+        throw new IllegalStateException("not decrypting");
+      }
+    msgOmac.update(in, inOff, ctr.currentBlockSize());
+    ctr.update(in, inOff, out, outOff);
+  }
+
+  public void update(byte[] in, int inOff, byte[] out, int outOff)
+  {
+    switch (state)
+      {
+      case ENCRYPTION:
+        encryptBlock(in, inOff, out, outOff);
+        break;
+      case DECRYPTION:
+        decryptBlock(in, inOff, out, outOff);
+        break;
+      default:
+        throw new IllegalStateException("impossible state " + state);
+      }
+  }
+
+  public void reset()
+  {
+    nonceOmac.reset();
+    headerOmac.reset();
+    msgOmac.reset();
+    ctr.reset();
+  }
+
+  public boolean selfTest()
+  {
+    return true; // XXX
+  }
+
+  // IMac instance methods.
+  // ------------------------------------------------------------------------
+
+  public int macSize()
+  {
+    return tagSize;
+  }
+
+  public byte[] digest()
+  {
+    byte[] tag = new byte[tagSize];
+    digest(tag, 0);
+    return tag;
+  }
+
+  public void digest(byte[] out, int outOffset)
+  {
+    if (outOffset < 0 || outOffset + tagSize > out.length)
+      {
+        throw new IndexOutOfBoundsException();
+      }
+    byte[] N = nonceOmac.digest();
+    byte[] H = headerOmac.digest();
+    byte[] M = msgOmac.digest();
+    for (int i = 0; i < tagSize; i++)
+      {
+        out[outOffset + i] = (byte) (N[i] ^ H[i] ^ M[i]);
+      }
+    reset();
+  }
+
+  public void update(byte b)
+  {
+    if (!init)
+      {
+        throw new IllegalStateException("not initialized");
+      }
+    headerOmac.update(b);
+  }
+
+  public void update(byte[] buf, int off, int len)
+  {
+    if (!init)
+      {
+        throw new IllegalStateException("not initialized");
+      }
+    headerOmac.update(buf, off, len);
+  }
+}
\ No newline at end of file