package org.bouncycastle.jcajce.provider.symmetric;
import java.io.IOException;
import java.security.AlgorithmParameters;
import java.security.InvalidAlgorithmParameterException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.InvalidParameterSpecException;
import javax.crypto.spec.IvParameterSpec;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.misc.IDEACBCPar;
import org.bouncycastle.crypto.CipherKeyGenerator;
import org.bouncycastle.crypto.engines.IDEAEngine;
import org.bouncycastle.crypto.macs.CBCBlockCipherMac;
import org.bouncycastle.crypto.macs.CFBBlockCipherMac;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseAlgorithmParameterGenerator;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseAlgorithmParameters;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseKeyGenerator;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseMac;
import org.bouncycastle.jcajce.provider.symmetric.util.PBESecretKeyFactory;
import org.bouncycastle.jcajce.provider.util.AlgorithmProvider;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
public final class IDEA
{
private IDEA()
{
}
public static class ECB
extends BaseBlockCipher
{
public ECB()
{
super(new IDEAEngine());
}
}
public static class CBC
extends BaseBlockCipher
{
public CBC()
{
super(new CBCBlockCipher(new IDEAEngine()), 64);
}
}
public static class KeyGen
extends BaseKeyGenerator
{
public KeyGen()
{
super("IDEA", 128, new CipherKeyGenerator());
}
}
public static class PBEWithSHAAndIDEAKeyGen
extends PBESecretKeyFactory
{
public PBEWithSHAAndIDEAKeyGen()
{
super("PBEwithSHAandIDEA-CBC", null, true, PKCS12, SHA1, 128, 64);
}
}
static public class PBEWithSHAAndIDEA
extends BaseBlockCipher
{
public PBEWithSHAAndIDEA()
{
super(new CBCBlockCipher(new IDEAEngine()));
}
}
public static class AlgParamGen
extends BaseAlgorithmParameterGenerator
{
protected void engineInit(
AlgorithmParameterSpec genParamSpec,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for IDEA parameter generation.");
}
protected AlgorithmParameters engineGenerateParameters()
{
byte[] iv = new byte[8];
if (random == null)
{
random = new SecureRandom();
}
random.nextBytes(iv);
AlgorithmParameters params;
try
{
params = AlgorithmParameters.getInstance("IDEA", BouncyCastleProvider.PROVIDER_NAME);
params.init(new IvParameterSpec(iv));
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
return params;
}
}
public static class AlgParams
extends BaseAlgorithmParameters
{
private byte[] iv;
protected byte[] engineGetEncoded()
throws IOException
{
return engineGetEncoded("ASN.1");
}
protected byte[] engineGetEncoded(
String format)
throws IOException
{
if (this.isASN1FormatString(format))
{
return new IDEACBCPar(engineGetEncoded("RAW")).getEncoded();
}
if (format.equals("RAW"))
{
byte[] tmp = new byte[iv.length];
System.arraycopy(iv, 0, tmp, 0, iv.length);
return tmp;
}
return null;
}
protected AlgorithmParameterSpec localEngineGetParameterSpec(
Class paramSpec)
throws InvalidParameterSpecException
{
if (paramSpec == IvParameterSpec.class)
{
return new IvParameterSpec(iv);
}
throw new InvalidParameterSpecException("unknown parameter spec passed to IV parameters object.");
}
protected void engineInit(
AlgorithmParameterSpec paramSpec)
throws InvalidParameterSpecException
{
if (!(paramSpec instanceof IvParameterSpec))
{
throw new InvalidParameterSpecException("IvParameterSpec required to initialise a IV parameters algorithm parameters object");
}
this.iv = ((IvParameterSpec)paramSpec).getIV();
}
protected void engineInit(
byte[] params)
throws IOException
{
this.iv = new byte[params.length];
System.arraycopy(params, 0, iv, 0, iv.length);
}
protected void engineInit(
byte[] params,
String format)
throws IOException
{
if (format.equals("RAW"))
{
engineInit(params);
return;
}
if (format.equals("ASN.1"))
{
ASN1InputStream aIn = new ASN1InputStream(params);
IDEACBCPar oct = new IDEACBCPar((ASN1Sequence)aIn.readObject());
engineInit(oct.getIV());
return;
}
throw new IOException("Unknown parameters format in IV parameters object");
}
protected String engineToString()
{
return "IDEA Parameters";
}
}
public static class Mac
extends BaseMac
{
public Mac()
{
super(new CBCBlockCipherMac(new IDEAEngine()));
}
}
public static class CFB8Mac
extends BaseMac
{
public CFB8Mac()
{
super(new CFBBlockCipherMac(new IDEAEngine()));
}
}
public static class Mappings
extends AlgorithmProvider
{
private static final String PREFIX = IDEA.class.getName();
public Mappings()
{
}
public void configure(ConfigurableProvider provider)
{
provider.addAlgorithm("AlgorithmParameterGenerator.IDEA", PREFIX + "$AlgParamGen");
provider.addAlgorithm("AlgorithmParameterGenerator.1.3.6.1.4.1.188.7.1.1.2", PREFIX + "$AlgParamGen");
provider.addAlgorithm("AlgorithmParameters.IDEA", PREFIX + "$AlgParams");
provider.addAlgorithm("AlgorithmParameters.1.3.6.1.4.1.188.7.1.1.2", PREFIX + "$AlgParams");
provider.addAlgorithm("Alg.Alias.AlgorithmParameters.PBEWITHSHAANDIDEA", "PKCS12PBE");
provider.addAlgorithm("Alg.Alias.AlgorithmParameters.PBEWITHSHAANDIDEA-CBC", "PKCS12PBE");
provider.addAlgorithm("Cipher.IDEA", PREFIX + "$ECB");
provider.addAlgorithm("Cipher.1.3.6.1.4.1.188.7.1.1.2", PREFIX + "$CBC");
provider.addAlgorithm("Cipher.PBEWITHSHAANDIDEA-CBC", PREFIX + "$PBEWithSHAAndIDEA");
provider.addAlgorithm("KeyGenerator.IDEA", PREFIX + "$KeyGen");
provider.addAlgorithm("KeyGenerator.1.3.6.1.4.1.188.7.1.1.2", PREFIX + "$KeyGen");
provider.addAlgorithm("SecretKeyFactory.PBEWITHSHAANDIDEA-CBC", PREFIX + "$PBEWithSHAAndIDEAKeyGen");
provider.addAlgorithm("Mac.IDEAMAC", PREFIX + "$Mac");
provider.addAlgorithm("Alg.Alias.Mac.IDEA", "IDEAMAC");
provider.addAlgorithm("Mac.IDEAMAC/CFB8", PREFIX + "$CFB8Mac");
provider.addAlgorithm("Alg.Alias.Mac.IDEA/CFB8", "IDEAMAC/CFB8");
}
}
}