1 /*
2 * Copyright (c) 1998, 2015, 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
137 */
138 public final String getAlgorithm() {
139 return this.algorithm;
140 }
141
142 /**
143 * Returns a {@code Mac} object that implements the
144 * specified MAC algorithm.
145 *
146 * <p> This method traverses the list of registered security Providers,
147 * starting with the most preferred Provider.
148 * A new Mac object encapsulating the
149 * MacSpi implementation from the first
150 * Provider that supports the specified algorithm is returned.
151 *
152 * <p> Note that the list of registered providers may be retrieved via
153 * the {@link Security#getProviders() Security.getProviders()} method.
154 *
155 * @implNote
156 * The JDK Reference Implementation additionally uses the
157 * {@code jdk.security.provider.preferred} property to determine
158 * the preferred provider order for the specified algorithm. This
159 * may be different than the order of providers returned by
160 * {@link Security#getProviders() Security.getProviders()}.
161 *
162 * @param algorithm the standard name of the requested MAC algorithm.
163 * See the Mac section in the <a href=
164 * "{@docRoot}/../technotes/guides/security/StandardNames.html#Mac">
165 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
166 * for information about standard algorithm names.
167 *
168 * @return the new {@code Mac} object.
169 *
170 * @exception NoSuchAlgorithmException if no Provider supports a
171 * MacSpi implementation for the
172 * specified algorithm.
173 *
174 * @see java.security.Provider
175 */
176 public static final Mac getInstance(String algorithm)
177 throws NoSuchAlgorithmException {
|
1 /*
2 * Copyright (c) 1998, 2016, 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
137 */
138 public final String getAlgorithm() {
139 return this.algorithm;
140 }
141
142 /**
143 * Returns a {@code Mac} object that implements the
144 * specified MAC algorithm.
145 *
146 * <p> This method traverses the list of registered security Providers,
147 * starting with the most preferred Provider.
148 * A new Mac object encapsulating the
149 * MacSpi implementation from the first
150 * Provider that supports the specified algorithm is returned.
151 *
152 * <p> Note that the list of registered providers may be retrieved via
153 * the {@link Security#getProviders() Security.getProviders()} method.
154 *
155 * @implNote
156 * The JDK Reference Implementation additionally uses the
157 * {@code jdk.security.provider.preferred}
158 * {@link Security#getProperty(String) Security} property to determine
159 * the preferred provider order for the specified algorithm. This
160 * may be different than the order of providers returned by
161 * {@link Security#getProviders() Security.getProviders()}.
162 *
163 * @param algorithm the standard name of the requested MAC algorithm.
164 * See the Mac section in the <a href=
165 * "{@docRoot}/../technotes/guides/security/StandardNames.html#Mac">
166 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
167 * for information about standard algorithm names.
168 *
169 * @return the new {@code Mac} object.
170 *
171 * @exception NoSuchAlgorithmException if no Provider supports a
172 * MacSpi implementation for the
173 * specified algorithm.
174 *
175 * @see java.security.Provider
176 */
177 public static final Mac getInstance(String algorithm)
178 throws NoSuchAlgorithmException {
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