jdk/src/jdk.crypto.mscapi/windows/classes/sun/security/mscapi/RSAKeyPairGenerator.java
author |
alanb |
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Thu, 17 Mar 2016 19:04:16 +0000 |
changeset 36511 |
9d0388c6b336 |
parent 36249 |
8b92e4bedbd4
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permissions |
-rw-r--r-- |
8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: alanb, mchung, naoto, rriggs, psandoz, plevart, mullan, ascarpino, vinnie, prr, sherman, dfuchs, mhaupt
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, chris.hegarty@oracle.com, alexandr.scherbatiy@oracle.com, amy.lu@oracle.com, calvin.cheung@oracle.com, daniel.fuchs@oracle.com, erik.joelsson@oracle.com, harold.seigel@oracle.com, jaroslav.bachorik@oracle.com, jean-francois.denise@oracle.com, jan.lahoda@oracle.com, james.laskey@oracle.com, lois.foltan@oracle.com, miroslav.kos@oracle.com, huaming.li@oracle.com, sean.mullan@oracle.com, naoto.sato@oracle.com, masayoshi.okutsu@oracle.com, peter.levart@gmail.com, philip.race@oracle.com, claes.redestad@oracle.com, sergey.bylokhov@oracle.com, alexandre.iline@oracle.com, volker.simonis@gmail.com, staffan.larsen@oracle.com, stuart.marks@oracle.com, semyon.sadetsky@oracle.com, serguei.spitsyn@oracle.com, sundararajan.athijegannathan@oracle.com, valerie.peng@oracle.com, vincent.x.ryan@oracle.com, weijun.wang@oracle.com, yuri.nesterenko@oracle.com, yekaterina.kantserova@oracle.com, alexander.kulyakhtin@oracle.com, felix.yang@oracle.com, andrei.eremeev@oracle.com, frank.yuan@oracle.com, sergei.pikalev@oracle.com, sibabrata.sahoo@oracle.com, tiantian.du@oracle.com, sha.jiang@oracle.com
/*
* Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.security.mscapi;
import java.util.UUID;
import java.security.*;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.RSAKeyGenParameterSpec;
import sun.security.rsa.RSAKeyFactory;
/**
* RSA keypair generator.
*
* Standard algorithm, minimum key length is 512 bit, maximum is 16,384.
* Generates a private key that is exportable.
*
* @since 1.6
*/
public final class RSAKeyPairGenerator extends KeyPairGeneratorSpi {
// Supported by Microsoft Base, Strong and Enhanced Cryptographic Providers
static final int KEY_SIZE_MIN = 512; // disallow MSCAPI min. of 384
static final int KEY_SIZE_MAX = 16384;
private static final int KEY_SIZE_DEFAULT = 2048;
// size of the key to generate, KEY_SIZE_MIN <= keySize <= KEY_SIZE_MAX
private int keySize;
public RSAKeyPairGenerator() {
// initialize to default in case the app does not call initialize()
initialize(KEY_SIZE_DEFAULT, null);
}
// initialize the generator. See JCA doc
// random is always ignored
public void initialize(int keySize, SecureRandom random) {
try {
RSAKeyFactory.checkKeyLengths(keySize, null,
KEY_SIZE_MIN, KEY_SIZE_MAX);
} catch (InvalidKeyException e) {
throw new InvalidParameterException(e.getMessage());
}
this.keySize = keySize;
}
// second initialize method. See JCA doc
// random and exponent are always ignored
public void initialize(AlgorithmParameterSpec params, SecureRandom random)
throws InvalidAlgorithmParameterException {
int tmpSize;
if (params == null) {
tmpSize = KEY_SIZE_DEFAULT;
} else if (params instanceof RSAKeyGenParameterSpec) {
if (((RSAKeyGenParameterSpec) params).getPublicExponent() != null) {
throw new InvalidAlgorithmParameterException
("Exponent parameter is not supported");
}
tmpSize = ((RSAKeyGenParameterSpec) params).getKeysize();
} else {
throw new InvalidAlgorithmParameterException
("Params must be an instance of RSAKeyGenParameterSpec");
}
try {
RSAKeyFactory.checkKeyLengths(tmpSize, null,
KEY_SIZE_MIN, KEY_SIZE_MAX);
} catch (InvalidKeyException e) {
throw new InvalidAlgorithmParameterException(
"Invalid Key sizes", e);
}
this.keySize = tmpSize;
}
// generate the keypair. See JCA doc
public KeyPair generateKeyPair() {
try {
// Generate each keypair in a unique key container
RSAKeyPair keys =
generateRSAKeyPair(keySize,
"{" + UUID.randomUUID().toString() + "}");
return new KeyPair(keys.getPublic(), keys.getPrivate());
} catch (KeyException e) {
throw new ProviderException(e);
}
}
private static native RSAKeyPair generateRSAKeyPair(int keySize,
String keyContainerName) throws KeyException;
}