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/* * @(#)Signer.java 1.43 05/11/17 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.security; import java.io.*; /** * This class is used to represent an Identity that can also digitally * sign data. * * <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. * * @see Identity * * @version 1.43 05/11/17 * @author Benjamin Renaud * * @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>. */ @Deprecated public abstract class Signer extends Identity { private static final long serialVersionUID = -1763464102261361480L; /** * The signer's private key. * * @serial */ private PrivateKey privateKey; /** * Creates a signer. This constructor should only be used for * serialization. */ protected Signer() { super(); } /** * Creates a signer with the specified identity name. * * @param name the identity name. */ public Signer(String name) { super(name); } /** * Creates a signer with the specified identity name and scope. * * @param name the identity name. * * @param scope the scope of the identity. * * @exception 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); } /** * Returns this signer's private key. * * <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. * * @return this signer's private key, or null if the private key has * not yet been set. * * @exception SecurityException if a security manager exists and its * <code>checkSecurityAccess</code> method doesn't allow * returning the private key. * * @see SecurityManager#checkSecurityAccess */ public PrivateKey getPrivateKey() { check("getSignerPrivateKey"); return privateKey; } /** * Sets the key pair (public key and private key) for this signer. * * <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. * * @param pair an initialized key pair. * * @exception InvalidParameterException if the key pair is not * properly initialized. * @exception KeyException if the key pair cannot be set for any * other reason. * @exception SecurityException if a security manager exists and its * <code>checkSecurityAccess</code> method doesn't allow * setting the key pair. * * @see SecurityManager#checkSecurityAccess */ public final void setKeyPair(KeyPair pair) throws InvalidParameterException, KeyException { check("setSignerKeyPair"); final PublicKey pub = pair.getPublic(); PrivateKey priv = pair.getPrivate(); if (pub == null || priv == null) { throw new InvalidParameterException(); } try { AccessController.doPrivileged(new PrivilegedExceptionAction() { public Object run() throws KeyManagementException { setPublicKey(pub); return null; } }); } catch (PrivilegedActionException pae) { throw (KeyManagementException) pae.getException(); } privateKey = priv; } String printKeys() { String keys = ""; PublicKey publicKey = getPublicKey(); if (publicKey != null && privateKey != null) { keys = "\tpublic and private keys initialized"; } else { keys = "\tno keys"; } return keys; } /** * Returns a string of information about the signer. * * @return a string of information about the signer. */ public String toString() { return "[Signer]" + super.toString(); } private static void check(String directive) { SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkSecurityAccess(directive); } } }