1 /*
2 * Copyright (c) 2003, 2010, 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
23 * questions.
24 */
25
26 package sun.security.rsa;
27
28 import java.io.IOException;
29 import java.nio.ByteBuffer;
30 import java.math.BigInteger;
31 import java.util.Arrays;
32
33 import java.security.*;
34 import java.security.interfaces.*;
35
36 import sun.security.util.*;
37 import sun.security.x509.AlgorithmId;
38
39 /**
40 * PKCS#1 RSA signatures with the various message digest algorithms.
41 * This file contains an abstract base class with all the logic plus
42 * a nested static class for each of the message digest algorithms
43 * (see end of the file). We support MD2, MD5, SHA-1, SHA-256, SHA-384,
44 * and SHA-512.
45 *
46 * @since 1.5
47 * @author Andreas Sterbenz
48 */
49 public abstract class RSASignature extends SignatureSpi {
50
51 // we sign an ASN.1 SEQUENCE of AlgorithmId and digest
52 // it has the form 30:xx:30:xx:[digestOID]:05:00:04:xx:[digest]
53 // this means the encoded length is (8 + digestOID.length + digest.length)
54 private static final int baseLength = 8;
55
56 // object identifier for the message digest algorithm used
57 private final ObjectIdentifier digestOID;
58
59 // length of the encoded signature blob
60 private final int encodedLength;
61
62 // message digest implementation we use
63 private final MessageDigest md;
64 // flag indicating whether the digest is reset
259 }
260
261 // Nested class for MD2withRSA signatures
262 public static final class MD2withRSA extends RSASignature {
263 public MD2withRSA() {
264 super("MD2", AlgorithmId.MD2_oid, 10);
265 }
266 }
267
268 // Nested class for MD5withRSA signatures
269 public static final class MD5withRSA extends RSASignature {
270 public MD5withRSA() {
271 super("MD5", AlgorithmId.MD5_oid, 10);
272 }
273 }
274
275 // Nested class for SHA1withRSA signatures
276 public static final class SHA1withRSA extends RSASignature {
277 public SHA1withRSA() {
278 super("SHA-1", AlgorithmId.SHA_oid, 7);
279 }
280 }
281
282 // Nested class for SHA256withRSA signatures
283 public static final class SHA256withRSA extends RSASignature {
284 public SHA256withRSA() {
285 super("SHA-256", AlgorithmId.SHA256_oid, 11);
286 }
287 }
288
289 // Nested class for SHA384withRSA signatures
290 public static final class SHA384withRSA extends RSASignature {
291 public SHA384withRSA() {
292 super("SHA-384", AlgorithmId.SHA384_oid, 11);
293 }
294 }
295
296 // Nested class for SHA512withRSA signatures
297 public static final class SHA512withRSA extends RSASignature {
298 public SHA512withRSA() {
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1 /*
2 * Copyright (c) 2003, 2012, 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
23 * questions.
24 */
25
26 package sun.security.rsa;
27
28 import java.io.IOException;
29 import java.nio.ByteBuffer;
30 import java.math.BigInteger;
31 import java.util.Arrays;
32
33 import java.security.*;
34 import java.security.interfaces.*;
35
36 import sun.security.util.*;
37 import sun.security.x509.AlgorithmId;
38
39 /**
40 * PKCS#1 RSA signatures with the various message digest algorithms.
41 * This file contains an abstract base class with all the logic plus
42 * a nested static class for each of the message digest algorithms
43 * (see end of the file). We support MD2, MD5, SHA-1, SHA-224, SHA-256,
44 * SHA-384, and SHA-512.
45 *
46 * @since 1.5
47 * @author Andreas Sterbenz
48 */
49 public abstract class RSASignature extends SignatureSpi {
50
51 // we sign an ASN.1 SEQUENCE of AlgorithmId and digest
52 // it has the form 30:xx:30:xx:[digestOID]:05:00:04:xx:[digest]
53 // this means the encoded length is (8 + digestOID.length + digest.length)
54 private static final int baseLength = 8;
55
56 // object identifier for the message digest algorithm used
57 private final ObjectIdentifier digestOID;
58
59 // length of the encoded signature blob
60 private final int encodedLength;
61
62 // message digest implementation we use
63 private final MessageDigest md;
64 // flag indicating whether the digest is reset
259 }
260
261 // Nested class for MD2withRSA signatures
262 public static final class MD2withRSA extends RSASignature {
263 public MD2withRSA() {
264 super("MD2", AlgorithmId.MD2_oid, 10);
265 }
266 }
267
268 // Nested class for MD5withRSA signatures
269 public static final class MD5withRSA extends RSASignature {
270 public MD5withRSA() {
271 super("MD5", AlgorithmId.MD5_oid, 10);
272 }
273 }
274
275 // Nested class for SHA1withRSA signatures
276 public static final class SHA1withRSA extends RSASignature {
277 public SHA1withRSA() {
278 super("SHA-1", AlgorithmId.SHA_oid, 7);
279 }
280 }
281
282 // Nested class for SHA224withRSA signatures
283 public static final class SHA224withRSA extends RSASignature {
284 public SHA224withRSA() {
285 super("SHA-224", AlgorithmId.SHA224_oid, 11);
286 }
287 }
288
289 // Nested class for SHA256withRSA signatures
290 public static final class SHA256withRSA extends RSASignature {
291 public SHA256withRSA() {
292 super("SHA-256", AlgorithmId.SHA256_oid, 11);
293 }
294 }
295
296 // Nested class for SHA384withRSA signatures
297 public static final class SHA384withRSA extends RSASignature {
298 public SHA384withRSA() {
299 super("SHA-384", AlgorithmId.SHA384_oid, 11);
300 }
301 }
302
303 // Nested class for SHA512withRSA signatures
304 public static final class SHA512withRSA extends RSASignature {
305 public SHA512withRSA() {
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