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+/* Signer.java --- Signer Class
+ Copyright (C) 1999, 2003, Free Software Foundation, Inc.
+
+This file is 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, 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; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, 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 java.security;
+
+/**
+ * <p>This class is used to represent an {@link Identity} that can also
+ * digitally sign data.</p>
+ *
+ * <p>The management of a signer's private keys is an important and sensitive
+ * issue that should be handled by subclasses as appropriate to their intended
+ * use.</p>
+ *
+ * @author Mark Benvenuto (ivymccough@worldnet.att.net)
+ * @deprecated This class is no longer used. Its functionality has been replaced
+ * by <code>java.security.KeyStore</code>, the <code>java.security.cert</code>
+ * package, and <code>java.security.Principal</code>.
+ */
+public abstract class Signer extends Identity
+{
+ private static final long serialVersionUID = -1763464102261361480L;
+ private PrivateKey privateKey = null;
+
+ /**
+ * Creates a <code>Signer</code>. This constructor should only be used for
+ * serialization.
+ */
+ protected Signer()
+ {
+ }
+
+ /**
+ * Creates a <code>Signer</code> with the specified identity name.
+ *
+ * @param name the identity name.
+ */
+ public Signer(String name)
+ {
+ super(name);
+ }
+
+ /**
+ * Creates a <code>Signer</code> with the specified identity name and scope.
+ *
+ * @param name the identity name.
+ * @param scope the scope of the identity.
+ * @throws KeyManagementException if there is already an identity with the
+ * same name in the scope.
+ */
+ public Signer(String name, IdentityScope scope) throws KeyManagementException
+ {
+ super(name, scope);
+ }
+
+ /**
+ * <p>Returns this signer's private key.</p>
+ *
+ * <p>First, if there is a security manager, its <code>checkSecurityAccess()
+ * </code> method is called with <code>"getSignerPrivateKey"</code> as its
+ * argument to see if it's ok to return the private key.</p>
+ *
+ * @return this signer's private key, or <code>null</code> if the private key
+ * has not yet been set.
+ * @throws SecurityException if a security manager exists and its
+ * <code>checkSecurityAccess()</code> method doesn't allow returning the
+ * private key.
+ * @see SecurityManager#checkSecurityAccess(String)
+ */
+ public PrivateKey getPrivateKey()
+ {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null)
+ sm.checkSecurityAccess("getSignerPrivateKey");
+
+ return privateKey;
+ }
+
+ /**
+ * <p>Sets the key pair (public key and private key) for this signer.</p>
+ *
+ * <p>First, if there is a security manager, its <code>checkSecurityAccess()
+ * </code> method is called with <code>"setSignerKeyPair"</code> as its
+ * argument to see if it's ok to set the key pair.</p>
+ *
+ * @param pair an initialized key pair.
+ * @throws InvalidParameterException if the key pair is not properly
+ * initialized.
+ * @throws KeyException if the key pair cannot be set for any other reason.
+ * @throws SecurityException if a security manager exists and its
+ * <code>checkSecurityAccess()</code> method doesn't allow setting the key
+ * pair.
+ * @see SecurityManager#checkSecurityAccess(String)
+ */
+ public final void setKeyPair(KeyPair pair)
+ throws InvalidParameterException, KeyException
+ {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null)
+ sm.checkSecurityAccess("setSignerKeyPair");
+
+ try
+ {
+ if (pair.getPublic() != null)
+ setPublicKey(pair.getPublic());
+ else
+ throw new InvalidParameterException();
+
+ }
+ catch (KeyManagementException kme)
+ {
+ throw new KeyException();
+ }
+
+ if (pair.getPrivate() != null)
+ privateKey = pair.getPrivate();
+ else
+ throw new InvalidParameterException();
+ }
+
+ /**
+ * Returns a string of information about the signer.
+ *
+ * @return a string of information about the signer.
+ * @see SecurityManager#checkSecurityAccess(String)
+ */
+ public String toString()
+ {
+ return (getName() + ": " + privateKey);
+ }
+}