1 /*
2 * Copyright (c) 1996, 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
188 new ServiceId("Cipher", "RSA//PKCS1Padding"),
189 new ServiceId("Cipher", "RSA"),
190 }
191 );
192
193 /**
194 * Returns a Signature object that implements the specified signature
195 * algorithm.
196 *
197 * <p> This method traverses the list of registered security Providers,
198 * starting with the most preferred Provider.
199 * A new Signature object encapsulating the
200 * SignatureSpi implementation from the first
201 * Provider that supports the specified algorithm is returned.
202 *
203 * <p> Note that the list of registered providers may be retrieved via
204 * the {@link Security#getProviders() Security.getProviders()} method.
205 *
206 * @implNote
207 * The JDK Reference Implementation additionally uses the
208 * {@code jdk.security.provider.preferred} property to determine
209 * the preferred provider order for the specified algorithm. This
210 * may be different than the order of providers returned by
211 * {@link Security#getProviders() Security.getProviders()}.
212 *
213 * @param algorithm the standard name of the algorithm requested.
214 * See the Signature section in the <a href=
215 * "{@docRoot}/../technotes/guides/security/StandardNames.html#Signature">
216 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
217 * for information about standard algorithm names.
218 *
219 * @return the new Signature object.
220 *
221 * @exception NoSuchAlgorithmException if no Provider supports a
222 * Signature implementation for the
223 * specified algorithm.
224 *
225 * @see Provider
226 */
227 public static Signature getInstance(String algorithm)
228 throws NoSuchAlgorithmException {
|
1 /*
2 * Copyright (c) 1996, 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
188 new ServiceId("Cipher", "RSA//PKCS1Padding"),
189 new ServiceId("Cipher", "RSA"),
190 }
191 );
192
193 /**
194 * Returns a Signature object that implements the specified signature
195 * algorithm.
196 *
197 * <p> This method traverses the list of registered security Providers,
198 * starting with the most preferred Provider.
199 * A new Signature object encapsulating the
200 * SignatureSpi implementation from the first
201 * Provider that supports the specified algorithm is returned.
202 *
203 * <p> Note that the list of registered providers may be retrieved via
204 * the {@link Security#getProviders() Security.getProviders()} method.
205 *
206 * @implNote
207 * The JDK Reference Implementation additionally uses the
208 * {@code jdk.security.provider.preferred}
209 * {@link Security#getProperty(String) Security} property to determine
210 * the preferred provider order for the specified algorithm. This
211 * may be different than the order of providers returned by
212 * {@link Security#getProviders() Security.getProviders()}.
213 *
214 * @param algorithm the standard name of the algorithm requested.
215 * See the Signature section in the <a href=
216 * "{@docRoot}/../technotes/guides/security/StandardNames.html#Signature">
217 * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
218 * for information about standard algorithm names.
219 *
220 * @return the new Signature object.
221 *
222 * @exception NoSuchAlgorithmException if no Provider supports a
223 * Signature implementation for the
224 * specified algorithm.
225 *
226 * @see Provider
227 */
228 public static Signature getInstance(String algorithm)
229 throws NoSuchAlgorithmException {
|