| /* |
| * Copyright 1996-2003 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package sun.security.x509; |
| |
| import java.security.Signature; |
| import java.security.SignatureException; |
| import java.security.Signer; |
| import java.security.NoSuchAlgorithmException; |
| |
| /** |
| * This class provides a binding between a Signature object and an |
| * authenticated X.500 name (from an X.509 certificate chain), which |
| * is needed in many public key signing applications. |
| * |
| * <P>The name of the signer is important, both because knowing it is the |
| * whole point of the signature, and because the associated X.509 certificate |
| * is always used to verify the signature. |
| * |
| * <P><em>The X.509 certificate chain is temporarily not associated with |
| * the signer, but this omission will be resolved.</em> |
| * |
| * |
| * @author David Brownell |
| * @author Amit Kapoor |
| * @author Hemma Prafullchandra |
| */ |
| public final class X500Signer extends Signer |
| { |
| private static final long serialVersionUID = -8609982645394364834L; |
| |
| /** |
| * Called for each chunk of the data being signed. That |
| * is, you can present the data in many chunks, so that |
| * it doesn't need to be in a single sequential buffer. |
| * |
| * @param buf buffer holding the next chunk of the data to be signed |
| * @param offset starting point of to-be-signed data |
| * @param len how many bytes of data are to be signed |
| * @exception SignatureException on errors. |
| */ |
| public void update(byte buf[], int offset, int len) |
| throws SignatureException { |
| sig.update (buf, offset, len); |
| } |
| |
| /** |
| * Produces the signature for the data processed by update(). |
| * |
| * @exception SignatureException on errors. |
| */ |
| public byte[] sign() throws SignatureException { |
| return sig.sign(); |
| } |
| |
| /** |
| * Returns the algorithm used to sign. |
| */ |
| public AlgorithmId getAlgorithmId() { |
| return algid; |
| } |
| |
| /** |
| * Returns the name of the signing agent. |
| */ |
| public X500Name getSigner() { |
| return agent; |
| } |
| |
| /* |
| * Constructs a binding between a signature and an X500 name |
| * from an X.509 certificate. |
| */ |
| // package private ----hmmmmm ????? |
| public X500Signer(Signature sig, X500Name agent) { |
| if (sig == null || agent == null) |
| throw new IllegalArgumentException ("null parameter"); |
| |
| this.sig = sig; |
| this.agent = agent; |
| |
| try { |
| this.algid = AlgorithmId.getAlgorithmId(sig.getAlgorithm()); |
| |
| } catch (NoSuchAlgorithmException e) { |
| throw new RuntimeException("internal error! " + e.getMessage()); |
| } |
| } |
| |
| private Signature sig; |
| private X500Name agent; // XXX should be X509CertChain |
| private AlgorithmId algid; |
| } |