--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.base/share/classes/com/sun/crypto/provider/PrivateKeyInfo.java	Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 1998, 2007, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.crypto.provider;
+
+import java.math.*;
+import java.io.*;
+import sun.security.x509.AlgorithmId;
+import sun.security.util.*;
+
+
+/**
+ * This class implements the <code>PrivateKeyInfo</code> type,
+ * which is defined in PKCS #8 as follows:
+ *
+ * <pre>
+ * PrivateKeyInfo ::=  SEQUENCE {
+ *     version   INTEGER,
+ *     privateKeyAlgorithm   AlgorithmIdentifier,
+ *     privateKey   OCTET STRING,
+ *     attributes   [0] IMPLICIT Attributes OPTIONAL }
+ * </pre>
+ *
+ * @author Jan Luehe
+ */
+final class PrivateKeyInfo {
+
+    // the version number defined by the PKCS #8 standard
+    private static final BigInteger VERSION = BigInteger.ZERO;
+
+    // the private-key algorithm
+    private AlgorithmId algid;
+
+    // the private-key value
+    private byte[] privkey;
+
+    /**
+     * Constructs a PKCS#8 PrivateKeyInfo from its ASN.1 encoding.
+     */
+    PrivateKeyInfo(byte[] encoded) throws IOException {
+        DerValue val = new DerValue(encoded);
+
+        if (val.tag != DerValue.tag_Sequence)
+            throw new IOException("private key parse error: not a sequence");
+
+        // version
+        BigInteger parsedVersion = val.data.getBigInteger();
+        if (!parsedVersion.equals(VERSION)) {
+            throw new IOException("version mismatch: (supported: " +
+                                  VERSION + ", parsed: " + parsedVersion);
+        }
+
+        // privateKeyAlgorithm
+        this.algid = AlgorithmId.parse(val.data.getDerValue());
+
+        // privateKey
+        this.privkey = val.data.getOctetString();
+
+        // OPTIONAL attributes not supported yet
+    }
+
+    /**
+     * Returns the private-key algorithm.
+     */
+    AlgorithmId getAlgorithm() {
+        return this.algid;
+    }
+}