--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/smartcardio/ATR.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package javax.smartcardio;
+
+import java.util.*;
+
+/**
+ * A Smart Card's answer-to-reset bytes. A Card's ATR object can be obtained
+ * by calling {@linkplain Card#getATR}.
+ * This class does not attempt to verify that the ATR encodes a semantically
+ * valid structure.
+ *
+ * <p>Instances of this class are immutable. Where data is passed in or out
+ * via byte arrays, defensive cloning is performed.
+ *
+ * @see Card#getATR
+ *
+ * @since   1.6
+ * @author  Andreas Sterbenz
+ * @author  JSR 268 Expert Group
+ */
+public final class ATR implements java.io.Serializable {
+
+    private static final long serialVersionUID = 6695383790847736493L;
+
+    private byte[] atr;
+
+    private transient int startHistorical, nHistorical;
+
+    /**
+     * Constructs an ATR from a byte array.
+     *
+     * @param atr the byte array containing the answer-to-reset bytes
+     * @throws NullPointerException if <code>atr</code> is null
+     */
+    public ATR(byte[] atr) {
+        this.atr = atr.clone();
+        parse();
+    }
+
+    private void parse() {
+        if (atr.length < 2) {
+            return;
+        }
+        if ((atr[0] != 0x3b) && (atr[0] != 0x3f)) {
+            return;
+        }
+        int t0 = (atr[1] & 0xf0) >> 4;
+        int n = atr[1] & 0xf;
+        int i = 2;
+        while ((t0 != 0) && (i < atr.length)) {
+            if ((t0 & 1) != 0) {
+                i++;
+            }
+            if ((t0 & 2) != 0) {
+                i++;
+            }
+            if ((t0 & 4) != 0) {
+                i++;
+            }
+            if ((t0 & 8) != 0) {
+                if (i >= atr.length) {
+                    return;
+                }
+                t0 = (atr[i++] & 0xf0) >> 4;
+            } else {
+                t0 = 0;
+            }
+        }
+        int k = i + n;
+        if ((k == atr.length) || (k == atr.length - 1)) {
+            startHistorical = i;
+            nHistorical = n;
+        }
+    }
+
+    /**
+     * Returns a copy of the bytes in this ATR.
+     *
+     * @return a copy of the bytes in this ATR.
+     */
+    public byte[] getBytes() {
+        return atr.clone();
+    }
+
+    /**
+     * Returns a copy of the historical bytes in this ATR.
+     * If this ATR does not contain historical bytes, an array of length
+     * zero is returned.
+     *
+     * @return a copy of the historical bytes in this ATR.
+     */
+    public byte[] getHistoricalBytes() {
+        byte[] b = new byte[nHistorical];
+        System.arraycopy(atr, startHistorical, b, 0, nHistorical);
+        return b;
+    }
+
+    /**
+     * Returns a string representation of this ATR.
+     *
+     * @return a String representation of this ATR.
+     */
+    public String toString() {
+        return "ATR: " + atr.length + " bytes";
+    }
+
+    /**
+     * Compares the specified object with this ATR for equality.
+     * Returns true if the given object is also an ATR and its bytes are
+     * identical to the bytes in this ATR.
+     *
+     * @param obj the object to be compared for equality with this ATR
+     * @return true if the specified object is equal to this ATR
+     */
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof ATR == false) {
+            return false;
+        }
+        ATR other = (ATR)obj;
+        return Arrays.equals(this.atr, other.atr);
+    }
+
+    /**
+     * Returns the hash code value for this ATR.
+     *
+     * @return the hash code value for this ATR.
+     */
+    public int hashCode() {
+        return Arrays.hashCode(atr);
+    }
+
+    private void readObject(java.io.ObjectInputStream in)
+            throws java.io.IOException, ClassNotFoundException {
+        atr = (byte[])in.readUnshared();
+        parse();
+    }
+
+}