--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/pkcs/EncryptedPrivateKeyInfo.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,172 @@
+/*
+ * Copyright 1998-1999 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 sun.security.pkcs;
+
+import java.io.*;
+import sun.security.x509.*;
+import sun.security.util.DerValue;
+import sun.security.util.DerOutputStream;
+
+/**
+ * This class implements the <code>EncryptedPrivateKeyInfo</code> type,
+ * which is defined in PKCS #8 as follows:
+ *
+ * <pre>
+ * EncryptedPrivateKeyInfo ::=  SEQUENCE {
+ *     encryptionAlgorithm   AlgorithmIdentifier,
+ *     encryptedData   OCTET STRING }
+ * </pre>
+ *
+ * @author Jan Luehe
+ *
+ */
+
+public class EncryptedPrivateKeyInfo {
+
+    // the "encryptionAlgorithm" field
+    private AlgorithmId algid;
+
+    // the "encryptedData" field
+    private byte[] encryptedData;
+
+    // the ASN.1 encoded contents of this class
+    private byte[] encoded;
+
+    /**
+     * Constructs (i.e., parses) an <code>EncryptedPrivateKeyInfo</code> from
+     * its encoding.
+     */
+    public EncryptedPrivateKeyInfo(byte[] encoded)
+        throws IOException
+    {
+        if (encoded == null) {
+            throw new IllegalArgumentException("encoding must not be null");
+        }
+
+        DerValue val = new DerValue(encoded);
+
+        DerValue[] seq = new DerValue[2];
+
+        seq[0] = val.data.getDerValue();
+        seq[1] = val.data.getDerValue();
+
+        if (val.data.available() != 0) {
+            throw new IOException("overrun, bytes = " + val.data.available());
+        }
+
+        this.algid = AlgorithmId.parse(seq[0]);
+        if (seq[0].data.available() != 0) {
+            throw new IOException("encryptionAlgorithm field overrun");
+        }
+
+        this.encryptedData = seq[1].getOctetString();
+        if (seq[1].data.available() != 0)
+            throw new IOException("encryptedData field overrun");
+
+        this.encoded = encoded.clone();
+    }
+
+    /**
+     * Constructs an <code>EncryptedPrivateKeyInfo</code> from the
+     * encryption algorithm and the encrypted data.
+     */
+    public EncryptedPrivateKeyInfo(AlgorithmId algid, byte[] encryptedData) {
+        this.algid = algid;
+        this.encryptedData = encryptedData.clone();
+    }
+
+    /**
+     * Returns the encryption algorithm.
+     */
+    public AlgorithmId getAlgorithm() {
+        return this.algid;
+    }
+
+    /**
+     * Returns the encrypted data.
+     */
+    public byte[] getEncryptedData() {
+        return this.encryptedData.clone();
+    }
+
+    /**
+     * Returns the ASN.1 encoding of this class.
+     */
+    public byte[] getEncoded()
+        throws IOException
+    {
+        if (this.encoded != null) return this.encoded.clone();
+
+        DerOutputStream out = new DerOutputStream();
+        DerOutputStream tmp = new DerOutputStream();
+
+        // encode encryption algorithm
+        algid.encode(tmp);
+
+        // encode encrypted data
+        tmp.putOctetString(encryptedData);
+
+        // wrap everything into a SEQUENCE
+        out.write(DerValue.tag_Sequence, tmp);
+        this.encoded = out.toByteArray();
+
+        return this.encoded.clone();
+    }
+
+    public boolean equals(Object other) {
+        if (this == other)
+            return true;
+        if (!(other instanceof EncryptedPrivateKeyInfo))
+            return false;
+        try {
+            byte[] thisEncrInfo = this.getEncoded();
+            byte[] otherEncrInfo
+                = ((EncryptedPrivateKeyInfo)other).getEncoded();
+
+            if (thisEncrInfo.length != otherEncrInfo.length)
+                return false;
+            for (int i = 0; i < thisEncrInfo.length; i++)
+                 if (thisEncrInfo[i] != otherEncrInfo[i])
+                     return false;
+            return true;
+        } catch (IOException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Returns a hashcode for this EncryptedPrivateKeyInfo.
+     *
+     * @return a hashcode for this EncryptedPrivateKeyInfo.
+     */
+    public int hashCode() {
+        int retval = 0;
+
+        for (int i = 0; i < this.encryptedData.length; i++)
+            retval += this.encryptedData[i] * i;
+        return retval;
+    }
+}