1 /*
2 * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
201 public Checksum(byte[] data) throws KdcErrException, KrbCryptoException {
202 this(Checksum.CKSUMTYPE_DEFAULT, data);
203 }
204 */
205
206 boolean isEqual(Checksum cksum) throws KdcErrException {
207 if (cksumType != cksum.cksumType)
208 return false;
209 CksumType cksumEngine = CksumType.getInstance(cksumType);
210 return CksumType.isChecksumEqual(checksum, cksum.checksum);
211 }
212
213 /**
214 * Constructs an instance of Checksum from an ASN.1 encoded representation.
215 * @param encoding a single DER-encoded value.
216 * @exception Asn1Exception if an error occurs while decoding an ASN1
217 * encoded data.
218 * @exception IOException if an I/O error occurs while reading encoded data.
219 *
220 */
221 private Checksum(DerValue encoding) throws Asn1Exception, IOException {
222 DerValue der;
223 if (encoding.getTag() != DerValue.tag_Sequence) {
224 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
225 }
226 der = encoding.getData().getDerValue();
227 if ((der.getTag() & (byte)0x1F) == (byte)0x00) {
228 cksumType = der.getData().getBigInteger().intValue();
229 }
230 else
231 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
232 der = encoding.getData().getDerValue();
233 if ((der.getTag() & (byte)0x1F) == (byte)0x01) {
234 checksum = der.getData().getOctetString();
235 }
236 else
237 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
238 if (encoding.getData().available() > 0) {
239 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
240 }
241 }
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1 /*
2 * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
201 public Checksum(byte[] data) throws KdcErrException, KrbCryptoException {
202 this(Checksum.CKSUMTYPE_DEFAULT, data);
203 }
204 */
205
206 boolean isEqual(Checksum cksum) throws KdcErrException {
207 if (cksumType != cksum.cksumType)
208 return false;
209 CksumType cksumEngine = CksumType.getInstance(cksumType);
210 return CksumType.isChecksumEqual(checksum, cksum.checksum);
211 }
212
213 /**
214 * Constructs an instance of Checksum from an ASN.1 encoded representation.
215 * @param encoding a single DER-encoded value.
216 * @exception Asn1Exception if an error occurs while decoding an ASN1
217 * encoded data.
218 * @exception IOException if an I/O error occurs while reading encoded data.
219 *
220 */
221 public Checksum(DerValue encoding) throws Asn1Exception, IOException {
222 DerValue der;
223 if (encoding.getTag() != DerValue.tag_Sequence) {
224 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
225 }
226 der = encoding.getData().getDerValue();
227 if ((der.getTag() & (byte)0x1F) == (byte)0x00) {
228 cksumType = der.getData().getBigInteger().intValue();
229 }
230 else
231 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
232 der = encoding.getData().getDerValue();
233 if ((der.getTag() & (byte)0x1F) == (byte)0x01) {
234 checksum = der.getData().getOctetString();
235 }
236 else
237 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
238 if (encoding.getData().available() > 0) {
239 throw new Asn1Exception(Krb5.ASN1_BAD_ID);
240 }
241 }
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