org.apache.rocketmq.shaded.ch.qos.logback.core.net.ssl.SecureRandomFactoryBean Maven / Gradle / Ivy
/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2015, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package org.apache.rocketmq.shaded.ch.qos.logback.core.net.ssl;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.SecureRandom;
/**
* A factory bean for a JCA {@link SecureRandom} generator.
*
* This object holds the configurable properties of a secure random generator
* and uses them to create and load a {@link SecureRandom} instance.
*
* @author Carl Harris
*/
public class SecureRandomFactoryBean {
private String algorithm;
private String provider;
/**
* Creates a new {@link SecureRandom} generator using the receiver's
* configuration.
* @return secure random generator instance
* @throws NoSuchProviderException if the provider name specified by
* {@link #setProvider(String)} is not known to the platform
* @throws NoSuchAlgorithmException if the algorithm name specified by
* {@link #setAlgorithm(String)} is not recognized by the specified
* provider (or the platform's default provider if the provider isn't
* specified)
*/
public SecureRandom createSecureRandom() throws NoSuchProviderException, NoSuchAlgorithmException {
try {
return getProvider() != null ? SecureRandom.getInstance(getAlgorithm(), getProvider()) : SecureRandom.getInstance(getAlgorithm());
} catch (NoSuchProviderException ex) {
throw new NoSuchProviderException("no such secure random provider: " + getProvider());
} catch (NoSuchAlgorithmException ex) {
throw new NoSuchAlgorithmException("no such secure random algorithm: " + getAlgorithm());
}
}
/**
* Gets the secure random generator algorithm name.
* @return an algorithm name (e.g. {@code SHA1PRNG}); the
* {@link SSL#DEFAULT_SECURE_RANDOM_ALGORITHM} is returned if no algorithm has been
* specified
*/
public String getAlgorithm() {
if (algorithm == null) {
return SSL.DEFAULT_SECURE_RANDOM_ALGORITHM;
}
return algorithm;
}
/**
* Sets the secure random generator algorithm name.
* @param algorithm an algorithm name, which must be recognized by the
* provider specified via {@link #setProvider(String)} or by the
* platform's default provider if no provider is specified.
*/
public void setAlgorithm(String algorithm) {
this.algorithm = algorithm;
}
/**
* Gets the JCA provider name for the secure random generator.
* @return provider name
*/
public String getProvider() {
return provider;
}
/**
* Sets the JCA provider name for the secure random generator.
* @param provider name of the JCA provider to utilize in creating the
* secure random generator
*/
public void setProvider(String provider) {
this.provider = provider;
}
}