| /* |
| * Copyright (c) 1997, 2014, 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 java.security; |
| |
| import java.util.*; |
| |
| import java.security.spec.AlgorithmParameterSpec; |
| |
| import java.security.Provider.Service; |
| |
| import sun.security.jca.*; |
| import sun.security.jca.GetInstance.Instance; |
| |
| /* |
| Android-removed: this debugging mechanism is not supported in Android. |
| import sun.security.util.Debug; |
| */ |
| |
| /** |
| * The KeyPairGenerator class is used to generate pairs of |
| * public and private keys. Key pair generators are constructed using the |
| * {@code getInstance} factory methods (static methods that |
| * return instances of a given class). |
| * |
| * <p>A Key pair generator for a particular algorithm creates a public/private |
| * key pair that can be used with this algorithm. It also associates |
| * algorithm-specific parameters with each of the generated keys. |
| * |
| * <p>There are two ways to generate a key pair: in an algorithm-independent |
| * manner, and in an algorithm-specific manner. |
| * The only difference between the two is the initialization of the object: |
| * |
| * <ul> |
| * <li><b>Algorithm-Independent Initialization</b> |
| * <p>All key pair generators share the concepts of a keysize and a |
| * source of randomness. The keysize is interpreted differently for different |
| * algorithms (e.g., in the case of the <i>DSA</i> algorithm, the keysize |
| * corresponds to the length of the modulus). |
| * There is an |
| * {@link #initialize(int, java.security.SecureRandom) initialize} |
| * method in this KeyPairGenerator class that takes these two universally |
| * shared types of arguments. There is also one that takes just a |
| * {@code keysize} argument, and uses the {@code SecureRandom} |
| * implementation of the highest-priority installed provider as the source |
| * of randomness. (If none of the installed providers supply an implementation |
| * of {@code SecureRandom}, a system-provided source of randomness is |
| * used.) |
| * |
| * <p>Since no other parameters are specified when you call the above |
| * algorithm-independent {@code initialize} methods, it is up to the |
| * provider what to do about the algorithm-specific parameters (if any) to be |
| * associated with each of the keys. |
| * |
| * <p>If the algorithm is the <i>DSA</i> algorithm, and the keysize (modulus |
| * size) is 512, 768, or 1024, then the <i>Sun</i> provider uses a set of |
| * precomputed values for the {@code p}, {@code q}, and |
| * {@code g} parameters. If the modulus size is not one of the above |
| * values, the <i>Sun</i> provider creates a new set of parameters. Other |
| * providers might have precomputed parameter sets for more than just the |
| * three modulus sizes mentioned above. Still others might not have a list of |
| * precomputed parameters at all and instead always create new parameter sets. |
| * |
| * <li><b>Algorithm-Specific Initialization</b> |
| * <p>For situations where a set of algorithm-specific parameters already |
| * exists (e.g., so-called <i>community parameters</i> in DSA), there are two |
| * {@link #initialize(java.security.spec.AlgorithmParameterSpec) |
| * initialize} methods that have an {@code AlgorithmParameterSpec} |
| * argument. One also has a {@code SecureRandom} argument, while the |
| * the other uses the {@code SecureRandom} |
| * implementation of the highest-priority installed provider as the source |
| * of randomness. (If none of the installed providers supply an implementation |
| * of {@code SecureRandom}, a system-provided source of randomness is |
| * used.) |
| * </ul> |
| * |
| * <p>In case the client does not explicitly initialize the KeyPairGenerator |
| * (via a call to an {@code initialize} method), each provider must |
| * supply (and document) a default initialization. |
| * For example, the <i>Sun</i> provider uses a default modulus size (keysize) |
| * of 1024 bits. |
| * |
| * <p>Note that this class is abstract and extends from |
| * {@code KeyPairGeneratorSpi} for historical reasons. |
| * Application developers should only take notice of the methods defined in |
| * this {@code KeyPairGenerator} class; all the methods in |
| * the superclass are intended for cryptographic service providers who wish to |
| * supply their own implementations of key pair generators. |
| * |
| * <p> Android provides the following <code>KeyPairGenerator</code> algorithms: |
| * <table> |
| * <thead> |
| * <tr> |
| * <th>Algorithm</th> |
| * <th>Supported API Levels</th> |
| * </tr> |
| * </thead> |
| * <tbody> |
| * <tr> |
| * <td>DH</td> |
| * <td>1+</td> |
| * </tr> |
| * <tr> |
| * <td>DSA</td> |
| * <td>1+</td> |
| * </tr> |
| * <tr> |
| * <td>EC</td> |
| * <td>11+</td> |
| * </tr> |
| * <tr> |
| * <td>RSA</td> |
| * <td>1+</td> |
| * </tr> |
| * </tbody> |
| * </table> |
| * |
| * These algorithms are described in the <a href= |
| * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#KeyPairGenerator"> |
| * KeyPairGenerator section</a> of the |
| * Java Cryptography Architecture Standard Algorithm Name Documentation. |
| * |
| * @author Benjamin Renaud |
| * |
| * @see java.security.spec.AlgorithmParameterSpec |
| */ |
| |
| public abstract class KeyPairGenerator extends KeyPairGeneratorSpi { |
| |
| /* |
| Android-removed: this debugging mechanism is not supported in Android. |
| private static final Debug pdebug = |
| Debug.getInstance("provider", "Provider"); |
| private static final boolean skipDebug = |
| Debug.isOn("engine=") && !Debug.isOn("keypairgenerator"); |
| */ |
| |
| private final String algorithm; |
| |
| // The provider |
| Provider provider; |
| |
| /** |
| * Creates a KeyPairGenerator object for the specified algorithm. |
| * |
| * @param algorithm the standard string name of the algorithm. |
| * See the KeyPairGenerator section in the <a href= |
| * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#KeyPairGenerator"> |
| * Java Cryptography Architecture Standard Algorithm Name Documentation</a> |
| * for information about standard algorithm names. |
| */ |
| protected KeyPairGenerator(String algorithm) { |
| this.algorithm = algorithm; |
| } |
| |
| /** |
| * Returns the standard name of the algorithm for this key pair generator. |
| * See the KeyPairGenerator section in the <a href= |
| * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#KeyPairGenerator"> |
| * Java Cryptography Architecture Standard Algorithm Name Documentation</a> |
| * for information about standard algorithm names. |
| * |
| * @return the standard string name of the algorithm. |
| */ |
| public String getAlgorithm() { |
| return this.algorithm; |
| } |
| |
| private static KeyPairGenerator getInstance(Instance instance, |
| String algorithm) { |
| KeyPairGenerator kpg; |
| if (instance.impl instanceof KeyPairGenerator) { |
| kpg = (KeyPairGenerator)instance.impl; |
| } else { |
| KeyPairGeneratorSpi spi = (KeyPairGeneratorSpi)instance.impl; |
| kpg = new Delegate(spi, algorithm); |
| } |
| kpg.provider = instance.provider; |
| |
| /* |
| Android-removed: this debugging mechanism is not supported in Android. |
| if (!skipDebug && pdebug != null) { |
| pdebug.println("KeyPairGenerator." + algorithm + |
| " algorithm from: " + kpg.provider.getName()); |
| } |
| */ |
| |
| return kpg; |
| } |
| |
| /** |
| * Returns a KeyPairGenerator object that generates public/private |
| * key pairs for the specified algorithm. |
| * |
| * <p> This method traverses the list of registered security Providers, |
| * starting with the most preferred Provider. |
| * A new KeyPairGenerator object encapsulating the |
| * KeyPairGeneratorSpi implementation from the first |
| * Provider that supports the specified algorithm is returned. |
| * |
| * <p> Note that the list of registered providers may be retrieved via |
| * the {@link Security#getProviders() Security.getProviders()} method. |
| * |
| * @param algorithm the standard string name of the algorithm. |
| * See the KeyPairGenerator section in the <a href= |
| * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#KeyPairGenerator"> |
| * Java Cryptography Architecture Standard Algorithm Name Documentation</a> |
| * for information about standard algorithm names. |
| * |
| * @return the new KeyPairGenerator object. |
| * |
| * @exception NoSuchAlgorithmException if no Provider supports a |
| * KeyPairGeneratorSpi implementation for the |
| * specified algorithm. |
| * |
| * @see Provider |
| */ |
| public static KeyPairGenerator getInstance(String algorithm) |
| throws NoSuchAlgorithmException { |
| List<Service> list = |
| GetInstance.getServices("KeyPairGenerator", algorithm); |
| Iterator<Service> t = list.iterator(); |
| if (t.hasNext() == false) { |
| throw new NoSuchAlgorithmException |
| (algorithm + " KeyPairGenerator not available"); |
| } |
| // find a working Spi or KeyPairGenerator subclass |
| NoSuchAlgorithmException failure = null; |
| do { |
| Service s = t.next(); |
| try { |
| Instance instance = |
| GetInstance.getInstance(s, KeyPairGeneratorSpi.class); |
| if (instance.impl instanceof KeyPairGenerator) { |
| return getInstance(instance, algorithm); |
| } else { |
| return new Delegate(instance, t, algorithm); |
| } |
| } catch (NoSuchAlgorithmException e) { |
| if (failure == null) { |
| failure = e; |
| } |
| } |
| } while (t.hasNext()); |
| throw failure; |
| } |
| |
| /** |
| * Returns a KeyPairGenerator object that generates public/private |
| * key pairs for the specified algorithm. |
| * |
| * <p> A new KeyPairGenerator object encapsulating the |
| * KeyPairGeneratorSpi implementation from the specified provider |
| * is returned. The specified provider must be registered |
| * in the security provider list. |
| * |
| * <p> Note that the list of registered providers may be retrieved via |
| * the {@link Security#getProviders() Security.getProviders()} method. |
| * |
| * @param algorithm the standard string name of the algorithm. |
| * See the KeyPairGenerator section in the <a href= |
| * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#KeyPairGenerator"> |
| * Java Cryptography Architecture Standard Algorithm Name Documentation</a> |
| * for information about standard algorithm names. |
| * |
| * @param provider the string name of the provider. |
| * |
| * @return the new KeyPairGenerator object. |
| * |
| * @exception NoSuchAlgorithmException if a KeyPairGeneratorSpi |
| * implementation for the specified algorithm is not |
| * available from the specified provider. |
| * |
| * @exception NoSuchProviderException if the specified provider is not |
| * registered in the security provider list. |
| * |
| * @exception IllegalArgumentException if the provider name is null |
| * or empty. |
| * |
| * @see Provider |
| */ |
| public static KeyPairGenerator getInstance(String algorithm, |
| String provider) |
| throws NoSuchAlgorithmException, NoSuchProviderException { |
| Instance instance = GetInstance.getInstance("KeyPairGenerator", |
| KeyPairGeneratorSpi.class, algorithm, provider); |
| return getInstance(instance, algorithm); |
| } |
| |
| /** |
| * Returns a KeyPairGenerator object that generates public/private |
| * key pairs for the specified algorithm. |
| * |
| * <p> A new KeyPairGenerator object encapsulating the |
| * KeyPairGeneratorSpi implementation from the specified Provider |
| * object is returned. Note that the specified Provider object |
| * does not have to be registered in the provider list. |
| * |
| * @param algorithm the standard string name of the algorithm. |
| * See the KeyPairGenerator section in the <a href= |
| * "{@docRoot}openjdk-redirect.html?v=8&path=/technotes/guides/security/StandardNames.html#KeyPairGenerator"> |
| * Java Cryptography Architecture Standard Algorithm Name Documentation</a> |
| * for information about standard algorithm names. |
| * |
| * @param provider the provider. |
| * |
| * @return the new KeyPairGenerator object. |
| * |
| * @exception NoSuchAlgorithmException if a KeyPairGeneratorSpi |
| * implementation for the specified algorithm is not available |
| * from the specified Provider object. |
| * |
| * @exception IllegalArgumentException if the specified provider is null. |
| * |
| * @see Provider |
| * |
| * @since 1.4 |
| */ |
| public static KeyPairGenerator getInstance(String algorithm, |
| Provider provider) throws NoSuchAlgorithmException { |
| Instance instance = GetInstance.getInstance("KeyPairGenerator", |
| KeyPairGeneratorSpi.class, algorithm, provider); |
| return getInstance(instance, algorithm); |
| } |
| |
| /** |
| * Returns the provider of this key pair generator object. |
| * |
| * @return the provider of this key pair generator object |
| */ |
| public final Provider getProvider() { |
| disableFailover(); |
| return this.provider; |
| } |
| |
| void disableFailover() { |
| // empty, overridden in Delegate |
| } |
| |
| /** |
| * Initializes the key pair generator for a certain keysize using |
| * a default parameter set and the {@code SecureRandom} |
| * implementation of the highest-priority installed provider as the source |
| * of randomness. |
| * (If none of the installed providers supply an implementation of |
| * {@code SecureRandom}, a system-provided source of randomness is |
| * used.) |
| * |
| * @param keysize the keysize. This is an |
| * algorithm-specific metric, such as modulus length, specified in |
| * number of bits. |
| * |
| * @exception InvalidParameterException if the {@code keysize} is not |
| * supported by this KeyPairGenerator object. |
| */ |
| public void initialize(int keysize) { |
| initialize(keysize, JCAUtil.getSecureRandom()); |
| } |
| |
| /** |
| * Initializes the key pair generator for a certain keysize with |
| * the given source of randomness (and a default parameter set). |
| * |
| * @param keysize the keysize. This is an |
| * algorithm-specific metric, such as modulus length, specified in |
| * number of bits. |
| * @param random the source of randomness. |
| * |
| * @exception InvalidParameterException if the {@code keysize} is not |
| * supported by this KeyPairGenerator object. |
| * |
| * @since 1.2 |
| */ |
| public void initialize(int keysize, SecureRandom random) { |
| // This does nothing, because either |
| // 1. the implementation object returned by getInstance() is an |
| // instance of KeyPairGenerator which has its own |
| // initialize(keysize, random) method, so the application would |
| // be calling that method directly, or |
| // 2. the implementation returned by getInstance() is an instance |
| // of Delegate, in which case initialize(keysize, random) is |
| // overridden to call the corresponding SPI method. |
| // (This is a special case, because the API and SPI method have the |
| // same name.) |
| } |
| |
| /** |
| * Initializes the key pair generator using the specified parameter |
| * set and the {@code SecureRandom} |
| * implementation of the highest-priority installed provider as the source |
| * of randomness. |
| * (If none of the installed providers supply an implementation of |
| * {@code SecureRandom}, a system-provided source of randomness is |
| * used.). |
| * |
| * <p>This concrete method has been added to this previously-defined |
| * abstract class. |
| * This method calls the KeyPairGeneratorSpi |
| * {@link KeyPairGeneratorSpi#initialize( |
| * java.security.spec.AlgorithmParameterSpec, |
| * java.security.SecureRandom) initialize} method, |
| * passing it {@code params} and a source of randomness (obtained |
| * from the highest-priority installed provider or system-provided if none |
| * of the installed providers supply one). |
| * That {@code initialize} method always throws an |
| * UnsupportedOperationException if it is not overridden by the provider. |
| * |
| * @param params the parameter set used to generate the keys. |
| * |
| * @exception InvalidAlgorithmParameterException if the given parameters |
| * are inappropriate for this key pair generator. |
| * |
| * @since 1.2 |
| */ |
| public void initialize(AlgorithmParameterSpec params) |
| throws InvalidAlgorithmParameterException { |
| initialize(params, JCAUtil.getSecureRandom()); |
| } |
| |
| /** |
| * Initializes the key pair generator with the given parameter |
| * set and source of randomness. |
| * |
| * <p>This concrete method has been added to this previously-defined |
| * abstract class. |
| * This method calls the KeyPairGeneratorSpi {@link |
| * KeyPairGeneratorSpi#initialize( |
| * java.security.spec.AlgorithmParameterSpec, |
| * java.security.SecureRandom) initialize} method, |
| * passing it {@code params} and {@code random}. |
| * That {@code initialize} |
| * method always throws an |
| * UnsupportedOperationException if it is not overridden by the provider. |
| * |
| * @param params the parameter set used to generate the keys. |
| * @param random the source of randomness. |
| * |
| * @exception InvalidAlgorithmParameterException if the given parameters |
| * are inappropriate for this key pair generator. |
| * |
| * @since 1.2 |
| */ |
| public void initialize(AlgorithmParameterSpec params, |
| SecureRandom random) |
| throws InvalidAlgorithmParameterException |
| { |
| // This does nothing, because either |
| // 1. the implementation object returned by getInstance() is an |
| // instance of KeyPairGenerator which has its own |
| // initialize(params, random) method, so the application would |
| // be calling that method directly, or |
| // 2. the implementation returned by getInstance() is an instance |
| // of Delegate, in which case initialize(params, random) is |
| // overridden to call the corresponding SPI method. |
| // (This is a special case, because the API and SPI method have the |
| // same name.) |
| } |
| |
| /** |
| * Generates a key pair. |
| * |
| * <p>If this KeyPairGenerator has not been initialized explicitly, |
| * provider-specific defaults will be used for the size and other |
| * (algorithm-specific) values of the generated keys. |
| * |
| * <p>This will generate a new key pair every time it is called. |
| * |
| * <p>This method is functionally equivalent to |
| * {@link #generateKeyPair() generateKeyPair}. |
| * |
| * @return the generated key pair |
| * |
| * @since 1.2 |
| */ |
| public final KeyPair genKeyPair() { |
| return generateKeyPair(); |
| } |
| |
| /** |
| * Generates a key pair. |
| * |
| * <p>If this KeyPairGenerator has not been initialized explicitly, |
| * provider-specific defaults will be used for the size and other |
| * (algorithm-specific) values of the generated keys. |
| * |
| * <p>This will generate a new key pair every time it is called. |
| * |
| * <p>This method is functionally equivalent to |
| * {@link #genKeyPair() genKeyPair}. |
| * |
| * @return the generated key pair |
| */ |
| public KeyPair generateKeyPair() { |
| // This does nothing (except returning null), because either: |
| // |
| // 1. the implementation object returned by getInstance() is an |
| // instance of KeyPairGenerator which has its own implementation |
| // of generateKeyPair (overriding this one), so the application |
| // would be calling that method directly, or |
| // |
| // 2. the implementation returned by getInstance() is an instance |
| // of Delegate, in which case generateKeyPair is |
| // overridden to invoke the corresponding SPI method. |
| // |
| // (This is a special case, because in JDK 1.1.x the generateKeyPair |
| // method was used both as an API and a SPI method.) |
| return null; |
| } |
| |
| |
| /* |
| * The following class allows providers to extend from KeyPairGeneratorSpi |
| * rather than from KeyPairGenerator. It represents a KeyPairGenerator |
| * with an encapsulated, provider-supplied SPI object (of type |
| * KeyPairGeneratorSpi). |
| * If the provider implementation is an instance of KeyPairGeneratorSpi, |
| * the getInstance() methods above return an instance of this class, with |
| * the SPI object encapsulated. |
| * |
| * Note: All SPI methods from the original KeyPairGenerator class have been |
| * moved up the hierarchy into a new class (KeyPairGeneratorSpi), which has |
| * been interposed in the hierarchy between the API (KeyPairGenerator) |
| * and its original parent (Object). |
| */ |
| |
| // |
| // error failover notes: |
| // |
| // . we failover if the implementation throws an error during init |
| // by retrying the init on other providers |
| // |
| // . we also failover if the init succeeded but the subsequent call |
| // to generateKeyPair() fails. In order for this to work, we need |
| // to remember the parameters to the last successful call to init |
| // and initialize() the next spi using them. |
| // |
| // . although not specified, KeyPairGenerators could be thread safe, |
| // so we make sure we do not interfere with that |
| // |
| // . failover is not available, if: |
| // . getInstance(algorithm, provider) was used |
| // . a provider extends KeyPairGenerator rather than |
| // KeyPairGeneratorSpi (JDK 1.1 style) |
| // . once getProvider() is called |
| // |
| |
| private static final class Delegate extends KeyPairGenerator { |
| |
| // The provider implementation (delegate) |
| private volatile KeyPairGeneratorSpi spi; |
| |
| private final Object lock = new Object(); |
| |
| private Iterator<Service> serviceIterator; |
| |
| private final static int I_NONE = 1; |
| private final static int I_SIZE = 2; |
| private final static int I_PARAMS = 3; |
| |
| private int initType; |
| private int initKeySize; |
| private AlgorithmParameterSpec initParams; |
| private SecureRandom initRandom; |
| |
| // constructor |
| Delegate(KeyPairGeneratorSpi spi, String algorithm) { |
| super(algorithm); |
| this.spi = spi; |
| } |
| |
| Delegate(Instance instance, Iterator<Service> serviceIterator, |
| String algorithm) { |
| super(algorithm); |
| spi = (KeyPairGeneratorSpi)instance.impl; |
| provider = instance.provider; |
| this.serviceIterator = serviceIterator; |
| initType = I_NONE; |
| |
| /* |
| Android-removed: this debugging mechanism is not supported in Android. |
| if (!skipDebug && pdebug != null) { |
| pdebug.println("KeyPairGenerator." + algorithm + |
| " algorithm from: " + provider.getName()); |
| } |
| */ |
| } |
| |
| /** |
| * Update the active spi of this class and return the next |
| * implementation for failover. If no more implemenations are |
| * available, this method returns null. However, the active spi of |
| * this class is never set to null. |
| */ |
| private KeyPairGeneratorSpi nextSpi(KeyPairGeneratorSpi oldSpi, |
| boolean reinit) { |
| synchronized (lock) { |
| // somebody else did a failover concurrently |
| // try that spi now |
| if ((oldSpi != null) && (oldSpi != spi)) { |
| return spi; |
| } |
| if (serviceIterator == null) { |
| return null; |
| } |
| while (serviceIterator.hasNext()) { |
| Service s = serviceIterator.next(); |
| try { |
| Object inst = s.newInstance(null); |
| // ignore non-spis |
| if (inst instanceof KeyPairGeneratorSpi == false) { |
| continue; |
| } |
| if (inst instanceof KeyPairGenerator) { |
| continue; |
| } |
| KeyPairGeneratorSpi spi = (KeyPairGeneratorSpi)inst; |
| if (reinit) { |
| if (initType == I_SIZE) { |
| spi.initialize(initKeySize, initRandom); |
| } else if (initType == I_PARAMS) { |
| spi.initialize(initParams, initRandom); |
| } else if (initType != I_NONE) { |
| throw new AssertionError |
| ("KeyPairGenerator initType: " + initType); |
| } |
| } |
| provider = s.getProvider(); |
| this.spi = spi; |
| return spi; |
| } catch (Exception e) { |
| // ignore |
| } |
| } |
| disableFailover(); |
| return null; |
| } |
| } |
| |
| void disableFailover() { |
| serviceIterator = null; |
| initType = 0; |
| initParams = null; |
| initRandom = null; |
| } |
| |
| // engine method |
| public void initialize(int keysize, SecureRandom random) { |
| if (serviceIterator == null) { |
| spi.initialize(keysize, random); |
| return; |
| } |
| RuntimeException failure = null; |
| KeyPairGeneratorSpi mySpi = spi; |
| do { |
| try { |
| mySpi.initialize(keysize, random); |
| initType = I_SIZE; |
| initKeySize = keysize; |
| initParams = null; |
| initRandom = random; |
| return; |
| } catch (RuntimeException e) { |
| if (failure == null) { |
| failure = e; |
| } |
| mySpi = nextSpi(mySpi, false); |
| } |
| } while (mySpi != null); |
| throw failure; |
| } |
| |
| // engine method |
| public void initialize(AlgorithmParameterSpec params, |
| SecureRandom random) throws InvalidAlgorithmParameterException { |
| if (serviceIterator == null) { |
| spi.initialize(params, random); |
| return; |
| } |
| Exception failure = null; |
| KeyPairGeneratorSpi mySpi = spi; |
| do { |
| try { |
| mySpi.initialize(params, random); |
| initType = I_PARAMS; |
| initKeySize = 0; |
| initParams = params; |
| initRandom = random; |
| return; |
| } catch (Exception e) { |
| if (failure == null) { |
| failure = e; |
| } |
| mySpi = nextSpi(mySpi, false); |
| } |
| } while (mySpi != null); |
| if (failure instanceof RuntimeException) { |
| throw (RuntimeException)failure; |
| } |
| // must be an InvalidAlgorithmParameterException |
| throw (InvalidAlgorithmParameterException)failure; |
| } |
| |
| // engine method |
| public KeyPair generateKeyPair() { |
| if (serviceIterator == null) { |
| return spi.generateKeyPair(); |
| } |
| RuntimeException failure = null; |
| KeyPairGeneratorSpi mySpi = spi; |
| do { |
| try { |
| return mySpi.generateKeyPair(); |
| } catch (RuntimeException e) { |
| if (failure == null) { |
| failure = e; |
| } |
| mySpi = nextSpi(mySpi, true); |
| } |
| } while (mySpi != null); |
| throw failure; |
| } |
| } |
| |
| } |
