1 /*
2 * Copyright (c) 1997, 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
123 */
124 public final String getAlgorithm() {
125 return this.algorithm;
126 }
127
128 /**
129 * Returns an AlgorithmParameterGenerator object for generating
130 * a set of parameters to be used with the specified algorithm.
131 *
132 * <p> This method traverses the list of registered security Providers,
133 * starting with the most preferred Provider.
134 * A new AlgorithmParameterGenerator object encapsulating the
135 * AlgorithmParameterGeneratorSpi implementation from the first
136 * Provider that supports the specified algorithm is returned.
137 *
138 * <p> Note that the list of registered providers may be retrieved via
139 * the {@link Security#getProviders() Security.getProviders()} method.
140 *
141 * @implNote
142 * The JDK Reference Implementation additionally uses the
143 * {@code jdk.security.provider.preferred} property to determine
144 * the preferred provider order for the specified algorithm. This
145 * may be different than the order of providers returned by
146 * {@link Security#getProviders() Security.getProviders()}.
147 *
148 * @param algorithm the name of the algorithm this
149 * parameter generator is associated with.
150 * See the AlgorithmParameterGenerator section in the <a href=
151 * "{@docRoot}/../technotes/guides/security/StandardNames.html#AlgorithmParameterGenerator">
152 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
153 * for information about standard algorithm names.
154 *
155 * @return the new AlgorithmParameterGenerator object.
156 *
157 * @exception NoSuchAlgorithmException if no Provider supports an
158 * AlgorithmParameterGeneratorSpi implementation for the
159 * specified algorithm.
160 *
161 * @see Provider
162 */
163 public static AlgorithmParameterGenerator getInstance(String algorithm)
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1 /*
2 * Copyright (c) 1997, 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
123 */
124 public final String getAlgorithm() {
125 return this.algorithm;
126 }
127
128 /**
129 * Returns an AlgorithmParameterGenerator object for generating
130 * a set of parameters to be used with the specified algorithm.
131 *
132 * <p> This method traverses the list of registered security Providers,
133 * starting with the most preferred Provider.
134 * A new AlgorithmParameterGenerator object encapsulating the
135 * AlgorithmParameterGeneratorSpi implementation from the first
136 * Provider that supports the specified algorithm is returned.
137 *
138 * <p> Note that the list of registered providers may be retrieved via
139 * the {@link Security#getProviders() Security.getProviders()} method.
140 *
141 * @implNote
142 * The JDK Reference Implementation additionally uses the
143 * {@code jdk.security.provider.preferred}
144 * {@link Security#getProperty(String) Security} property to determine
145 * the preferred provider order for the specified algorithm. This
146 * may be different than the order of providers returned by
147 * {@link Security#getProviders() Security.getProviders()}.
148 *
149 * @param algorithm the name of the algorithm this
150 * parameter generator is associated with.
151 * See the AlgorithmParameterGenerator section in the <a href=
152 * "{@docRoot}/../technotes/guides/security/StandardNames.html#AlgorithmParameterGenerator">
153 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
154 * for information about standard algorithm names.
155 *
156 * @return the new AlgorithmParameterGenerator object.
157 *
158 * @exception NoSuchAlgorithmException if no Provider supports an
159 * AlgorithmParameterGeneratorSpi implementation for the
160 * specified algorithm.
161 *
162 * @see Provider
163 */
164 public static AlgorithmParameterGenerator getInstance(String algorithm)
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