| /* |
| * Copyright (c) 2003, 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.timestamp; |
| |
| import java.io.IOException; |
| import java.math.BigInteger; |
| import java.security.cert.X509Extension; |
| import sun.security.util.DerValue; |
| import sun.security.util.DerOutputStream; |
| import sun.security.util.ObjectIdentifier; |
| |
| /** |
| * This class provides a timestamp request, as defined in |
| * <a href="http://www.ietf.org/rfc/rfc3161.txt">RFC 3161</a>. |
| * |
| * The TimeStampReq ASN.1 type has the following definition: |
| * <pre> |
| * |
| * TimeStampReq ::= SEQUENCE { |
| * version INTEGER { v1(1) }, |
| * messageImprint MessageImprint |
| * -- a hash algorithm OID and the hash value of the data to be |
| * -- time-stamped. |
| * reqPolicy TSAPolicyId OPTIONAL, |
| * nonce INTEGER OPTIONAL, |
| * certReq BOOLEAN DEFAULT FALSE, |
| * extensions [0] IMPLICIT Extensions OPTIONAL } |
| * |
| * MessageImprint ::= SEQUENCE { |
| * hashAlgorithm AlgorithmIdentifier, |
| * hashedMessage OCTET STRING } |
| * |
| * TSAPolicyId ::= OBJECT IDENTIFIER |
| * |
| * </pre> |
| * |
| * @since 1.5 |
| * @author Vincent Ryan |
| * @see Timestamper |
| */ |
| |
| public class TSRequest { |
| |
| private static final ObjectIdentifier SHA1_OID; |
| private static final ObjectIdentifier MD5_OID; |
| static { |
| ObjectIdentifier sha1 = null; |
| ObjectIdentifier md5 = null; |
| try { |
| sha1 = new ObjectIdentifier("1.3.14.3.2.26"); |
| md5 = new ObjectIdentifier("1.2.840.113549.2.5"); |
| } catch (IOException ioe) { |
| // should not happen |
| } |
| SHA1_OID = sha1; |
| MD5_OID = md5; |
| } |
| |
| private int version = 1; |
| |
| private ObjectIdentifier hashAlgorithmId = null; |
| |
| private byte[] hashValue; |
| |
| private String policyId = null; |
| |
| private BigInteger nonce = null; |
| |
| private boolean returnCertificate = false; |
| |
| private X509Extension[] extensions = null; |
| |
| /** |
| * Constructs a timestamp request for the supplied hash value.. |
| * |
| * @param hashValue The hash value. This is the data to be timestamped. |
| * @param hashAlgorithm The name of the hash algorithm. |
| */ |
| public TSRequest(byte[] hashValue, String hashAlgorithm) { |
| |
| // Check the common hash algorithms |
| if ("MD5".equalsIgnoreCase(hashAlgorithm)) { |
| hashAlgorithmId = MD5_OID; |
| // Check that the hash value matches the hash algorithm |
| assert hashValue.length == 16; |
| |
| } else if ("SHA-1".equalsIgnoreCase(hashAlgorithm) || |
| "SHA".equalsIgnoreCase(hashAlgorithm) || |
| "SHA1".equalsIgnoreCase(hashAlgorithm)) { |
| hashAlgorithmId = SHA1_OID; |
| // Check that the hash value matches the hash algorithm |
| assert hashValue.length == 20; |
| |
| } |
| // Clone the hash value |
| this.hashValue = new byte[hashValue.length]; |
| System.arraycopy(hashValue, 0, this.hashValue, 0, hashValue.length); |
| } |
| |
| /** |
| * Sets the Time-Stamp Protocol version. |
| * |
| * @param version The TSP version. |
| */ |
| public void setVersion(int version) { |
| this.version = version; |
| } |
| |
| /** |
| * Sets an object identifier for the Time-Stamp Protocol policy. |
| * |
| * @param version The policy object identifier. |
| */ |
| public void setPolicyId(String policyId) { |
| this.policyId = policyId; |
| } |
| |
| /** |
| * Sets a nonce. |
| * A nonce is a single-use random number. |
| * |
| * @param nonce The nonce value. |
| */ |
| public void setNonce(BigInteger nonce) { |
| this.nonce = nonce; |
| } |
| |
| /** |
| * Request that the TSA include its signing certificate in the response. |
| * |
| * @param returnCertificate True if the TSA should return its signing |
| * certificate. By default it is not returned. |
| */ |
| public void requestCertificate(boolean returnCertificate) { |
| this.returnCertificate = returnCertificate; |
| } |
| |
| /** |
| * Sets the Time-Stamp Protocol extensions. |
| * |
| * @param extensions The protocol extensions. |
| */ |
| public void setExtensions(X509Extension[] extensions) { |
| this.extensions = extensions; |
| } |
| |
| public byte[] encode() throws IOException { |
| |
| DerOutputStream request = new DerOutputStream(); |
| |
| // encode version |
| request.putInteger(version); |
| |
| // encode messageImprint |
| DerOutputStream messageImprint = new DerOutputStream(); |
| DerOutputStream hashAlgorithm = new DerOutputStream(); |
| hashAlgorithm.putOID(hashAlgorithmId); |
| messageImprint.write(DerValue.tag_Sequence, hashAlgorithm); |
| messageImprint.putOctetString(hashValue); |
| request.write(DerValue.tag_Sequence, messageImprint); |
| |
| // encode optional elements |
| |
| if (policyId != null) { |
| request.putOID(new ObjectIdentifier(policyId)); |
| } |
| if (nonce != null) { |
| request.putInteger(nonce); |
| } |
| if (returnCertificate) { |
| request.putBoolean(true); |
| } |
| |
| DerOutputStream out = new DerOutputStream(); |
| out.write(DerValue.tag_Sequence, request); |
| return out.toByteArray(); |
| } |
| } |