--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/provider/certpath/UntrustedChecker.java	Mon Jan 09 20:55:52 2012 -0800
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2012, 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 sun.security.provider.certpath;
+
+import java.security.cert.Certificate;
+import java.security.cert.X509Certificate;
+import java.security.cert.CertPathValidatorException;
+import java.security.cert.PKIXCertPathChecker;
+import java.util.Set;
+import java.util.Collection;
+import sun.security.util.Debug;
+import sun.security.util.UntrustedCertificates;
+
+/**
+ * A <code>PKIXCertPathChecker</code> implementation to check whether a
+ * specified certificate is distrusted.
+ *
+ * @see PKIXCertPathChecker
+ * @see PKIXParameters
+ */
+final public class UntrustedChecker extends PKIXCertPathChecker {
+
+    private static final Debug debug = Debug.getInstance("certpath");
+
+    /**
+     * Default Constructor
+     */
+    public UntrustedChecker() {
+        // blank
+    }
+
+    @Override
+    public void init(boolean forward) throws CertPathValidatorException {
+        // Note that this class supports both forward and reverse modes.
+    }
+
+    @Override
+    public boolean isForwardCheckingSupported() {
+        // Note that this class supports both forward and reverse modes.
+        return true;
+    }
+
+    @Override
+    public Set<String> getSupportedExtensions() {
+        return null;
+    }
+
+    @Override
+    public void check(Certificate cert,
+            Collection<String> unresolvedCritExts)
+            throws CertPathValidatorException {
+
+        X509Certificate currCert = (X509Certificate)cert;
+
+        if (UntrustedCertificates.isUntrusted(currCert)) {
+            if (debug != null) {
+                debug.println("UntrustedChecker: untrusted certificate " +
+                        currCert.getSubjectX500Principal());
+            }
+
+            throw new CertPathValidatorException(
+                "Untrusted certificate: " + currCert.getSubjectX500Principal());
+        }
+    }
+}
+