/*
* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
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
*
* @author Benjamin Renaud
*
* @deprecated This class is no longer used. Its functionality has been
* replaced by {@code java.security.KeyStore}, the
* {@code java.security.cert} package, and
* {@code java.security.Principal}.
*/
@
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}
* method is called with {@code "getSignerPrivateKey"}
* 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} 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}
* method is called with {@code "setSignerKeyPair"}
* 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} 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<
Void>() {
public
Void 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);
}
}
}