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package org.spongycastle.pqc.jcajce.provider;
import java.io.IOException;
import java.security.AccessController;
import java.security.PrivateKey;
import java.security.PrivilegedAction;
import java.security.Provider;
import java.security.PublicKey;
import java.util.HashMap;
import java.util.Map;
import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.asn1.pkcs.PrivateKeyInfo;
import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
import org.spongycastle.jcajce.provider.config.ConfigurableProvider;
import org.spongycastle.jcajce.provider.config.ProviderConfiguration;
import org.spongycastle.jcajce.provider.util.AlgorithmProvider;
import org.spongycastle.jcajce.provider.util.AsymmetricKeyInfoConverter;
public class BouncyCastlePQCProvider
extends Provider
implements ConfigurableProvider
{
private static String info = "BouncyCastle Post-Quantum Security Provider v1.50";
public static String PROVIDER_NAME = "BCPQC";
public static final ProviderConfiguration CONFIGURATION = null;
private static final Map keyInfoConverters = new HashMap();
/*
* Configurable symmetric ciphers
*/
private static final String ALGORITHM_PACKAGE = "org.spongycastle.pqc.jcajce.provider.";
private static final String[] ALGORITHMS =
{
"Rainbow", "McEliece"
};
/**
* Construct a new provider. This should only be required when
* using runtime registration of the provider using the
* <code>Security.addProvider()</code> mechanism.
*/
public BouncyCastlePQCProvider()
{
super(PROVIDER_NAME, 1.50, info);
AccessController.doPrivileged(new PrivilegedAction()
{
public Object run()
{
setup();
return null;
}
});
}
private void setup()
{
loadAlgorithms(ALGORITHM_PACKAGE, ALGORITHMS);
}
private void loadAlgorithms(String packageName, String[] names)
{
for (int i = 0; i != names.length; i++)
{
Class clazz = null;
try
{
ClassLoader loader = this.getClass().getClassLoader();
if (loader != null)
{
clazz = loader.loadClass(packageName + names[i] + "$Mappings");
}
else
{
clazz = Class.forName(packageName + names[i] + "$Mappings");
}
}
catch (ClassNotFoundException e)
{
// ignore
}
if (clazz != null)
{
try
{
((AlgorithmProvider)clazz.newInstance()).configure(this);
}
catch (Exception e)
{ // this should never ever happen!!
throw new InternalError("cannot create instance of "
+ packageName + names[i] + "$Mappings : " + e);
}
}
}
}
public void setParameter(String parameterName, Object parameter)
{
synchronized (CONFIGURATION)
{
//((BouncyCastleProviderConfiguration)CONFIGURATION).setParameter(parameterName, parameter);
}
}
public boolean hasAlgorithm(String type, String name)
{
return containsKey(type + "." + name) || containsKey("Alg.Alias." + type + "." + name);
}
public void addAlgorithm(String key, String value)
{
if (containsKey(key))
{
throw new IllegalStateException("duplicate provider key (" + key + ") found");
}
put(key, value);
}
public void addKeyInfoConverter(ASN1ObjectIdentifier oid, AsymmetricKeyInfoConverter keyInfoConverter)
{
keyInfoConverters.put(oid, keyInfoConverter);
}
public static PublicKey getPublicKey(SubjectPublicKeyInfo publicKeyInfo)
throws IOException
{
AsymmetricKeyInfoConverter converter = (AsymmetricKeyInfoConverter)keyInfoConverters.get(publicKeyInfo.getAlgorithm().getAlgorithm());
if (converter == null)
{
return null;
}
return converter.generatePublic(publicKeyInfo);
}
public static PrivateKey getPrivateKey(PrivateKeyInfo privateKeyInfo)
throws IOException
{
AsymmetricKeyInfoConverter converter = (AsymmetricKeyInfoConverter)keyInfoConverters.get(privateKeyInfo.getPrivateKeyAlgorithm().getAlgorithm());
if (converter == null)
{
return null;
}
return converter.generatePrivate(privateKeyInfo);
}
}
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