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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 java.util.HashMap;
import java.util.Map;
import javax.crypto.spec.IvParameterSpec;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
import org.bouncycastle.asn1.cryptopro.GOST28147Parameters;
import org.bouncycastle.asn1.rosstandart.RosstandartObjectIdentifiers;
import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.crypto.CipherKeyGenerator;
import org.bouncycastle.crypto.CryptoServicesRegistrar;
import org.bouncycastle.crypto.engines.CryptoProWrapEngine;
import org.bouncycastle.crypto.engines.GOST28147Engine;
import org.bouncycastle.crypto.engines.GOST28147WrapEngine;
import org.bouncycastle.crypto.macs.GOST28147Mac;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.crypto.modes.GCFBBlockCipher;
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.BaseWrapCipher;
import org.bouncycastle.jcajce.provider.util.AlgorithmProvider;
import org.bouncycastle.jcajce.spec.GOST28147ParameterSpec;
import org.bouncycastle.util.Strings;
public final class GOST28147
{
private static Map oidMappings = new HashMap();
private static Map nameMappings = new HashMap();
static
{
oidMappings.put(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_TestParamSet, "E-TEST");
oidMappings.put(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_A_ParamSet, "E-A");
oidMappings.put(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_B_ParamSet, "E-B");
oidMappings.put(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_C_ParamSet, "E-C");
oidMappings.put(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_D_ParamSet, "E-D");
oidMappings.put(RosstandartObjectIdentifiers.id_tc26_gost_28147_param_Z, "PARAM-Z");
nameMappings.put("E-A", CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_A_ParamSet);
nameMappings.put("E-B", CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_B_ParamSet);
nameMappings.put("E-C", CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_C_ParamSet);
nameMappings.put("E-D", CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_D_ParamSet);
nameMappings.put("PARAM-Z", RosstandartObjectIdentifiers.id_tc26_gost_28147_param_Z);
}
private GOST28147()
{
}
public static class ECB
extends BaseBlockCipher
{
public ECB()
{
super(new GOST28147Engine());
}
}
public static class CBC
extends BaseBlockCipher
{
public CBC()
{
super(new CBCBlockCipher(new GOST28147Engine()), 64);
}
}
public static class GCFB
extends BaseBlockCipher
{
public GCFB()
{
super(new BufferedBlockCipher(new GCFBBlockCipher(new GOST28147Engine())), 64);
}
}
public static class GostWrap
extends BaseWrapCipher
{
public GostWrap()
{
super(new GOST28147WrapEngine());
}
}
public static class CryptoProWrap
extends BaseWrapCipher
{
public CryptoProWrap()
{
super(new CryptoProWrapEngine());
}
}
/**
* GOST28147
*/
public static class Mac
extends BaseMac
{
public Mac()
{
super(new GOST28147Mac());
}
}
public static class KeyGen
extends BaseKeyGenerator
{
public KeyGen()
{
this(256);
}
public KeyGen(int keySize)
{
super("GOST28147", keySize, new CipherKeyGenerator());
}
}
public static class AlgParamGen
extends BaseAlgorithmParameterGenerator
{
byte[] iv = new byte[8];
byte[] sBox = GOST28147Engine.getSBox("E-A");
protected void engineInit(
AlgorithmParameterSpec genParamSpec,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
if (genParamSpec instanceof GOST28147ParameterSpec)
{
this.sBox = ((GOST28147ParameterSpec)genParamSpec).getSBox();
}
else
{
throw new InvalidAlgorithmParameterException("parameter spec not supported");
}
}
protected AlgorithmParameters engineGenerateParameters()
{
if (random == null)
{
random = CryptoServicesRegistrar.getSecureRandom();
}
random.nextBytes(iv);
AlgorithmParameters params;
try
{
params = createParametersInstance("GOST28147");
params.init(new GOST28147ParameterSpec(sBox, iv));
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
return params;
}
}
public abstract static class BaseAlgParams
extends BaseAlgorithmParameters
{
private ASN1ObjectIdentifier sBox = CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_A_ParamSet;
private byte[] iv;
protected final void engineInit(byte[] encoding)
throws IOException
{
engineInit(encoding, "ASN.1");
}
protected final byte[] engineGetEncoded()
throws IOException
{
return engineGetEncoded("ASN.1");
}
protected final byte[] engineGetEncoded(
String format)
throws IOException
{
if (isASN1FormatString(format))
{
return localGetEncoded();
}
throw new IOException("Unknown parameter format: " + format);
}
protected final void engineInit(
byte[] params,
String format)
throws IOException
{
if (params == null)
{
throw new NullPointerException("Encoded parameters cannot be null");
}
if (isASN1FormatString(format))
{
try
{
localInit(params);
}
catch (IOException e)
{
throw e;
}
catch (Exception e)
{
throw new IOException("Parameter parsing failed: " + e.getMessage());
}
}
else
{
throw new IOException("Unknown parameter format: " + format);
}
}
protected byte[] localGetEncoded()
throws IOException
{
return new GOST28147Parameters(iv, sBox).getEncoded();
}
protected AlgorithmParameterSpec localEngineGetParameterSpec(
Class paramSpec)
throws InvalidParameterSpecException
{
if (paramSpec == IvParameterSpec.class)
{
return new IvParameterSpec(iv);
}
if (paramSpec == GOST28147ParameterSpec.class || paramSpec == AlgorithmParameterSpec.class)
{
return new GOST28147ParameterSpec(sBox, iv);
}
throw new InvalidParameterSpecException("AlgorithmParameterSpec not recognized: " + paramSpec.getName());
}
protected void engineInit(
AlgorithmParameterSpec paramSpec)
throws InvalidParameterSpecException
{
if (paramSpec instanceof IvParameterSpec)
{
this.iv = ((IvParameterSpec)paramSpec).getIV();
}
else if (paramSpec instanceof GOST28147ParameterSpec)
{
this.iv = ((GOST28147ParameterSpec)paramSpec).getIV();
try
{
this.sBox = getSBoxOID((((GOST28147ParameterSpec)paramSpec).getSBox()));
}
catch (IllegalArgumentException e)
{
throw new InvalidParameterSpecException(e.getMessage());
}
}
else
{
throw new InvalidParameterSpecException("IvParameterSpec required to initialise a IV parameters algorithm parameters object");
}
}
protected static ASN1ObjectIdentifier getSBoxOID(String name)
{
ASN1ObjectIdentifier oid = null;
if (name != null)
{
oid = (ASN1ObjectIdentifier)nameMappings.get(Strings.toUpperCase(name));
}
if (oid == null)
{
throw new IllegalArgumentException("Unknown SBOX name: " + name);
}
return oid;
}
protected static ASN1ObjectIdentifier getSBoxOID(byte[] sBox)
{
return getSBoxOID(GOST28147Engine.getSBoxName(sBox));
}
abstract void localInit(byte[] params) throws IOException;
}
public static class AlgParams
extends BaseAlgParams
{
private ASN1ObjectIdentifier sBox = CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_A_ParamSet;
private byte[] iv;
protected byte[] localGetEncoded()
throws IOException
{
return new GOST28147Parameters(iv, sBox).getEncoded();
}
protected AlgorithmParameterSpec localEngineGetParameterSpec(
Class paramSpec)
throws InvalidParameterSpecException
{
if (paramSpec == IvParameterSpec.class)
{
return new IvParameterSpec(iv);
}
if (paramSpec == GOST28147ParameterSpec.class || paramSpec == AlgorithmParameterSpec.class)
{
return new GOST28147ParameterSpec(sBox, iv);
}
throw new InvalidParameterSpecException("AlgorithmParameterSpec not recognized: " + paramSpec.getName());
}
protected void engineInit(
AlgorithmParameterSpec paramSpec)
throws InvalidParameterSpecException
{
if (paramSpec instanceof IvParameterSpec)
{
this.iv = ((IvParameterSpec)paramSpec).getIV();
}
else if (paramSpec instanceof GOST28147ParameterSpec)
{
this.iv = ((GOST28147ParameterSpec)paramSpec).getIV();
try
{
this.sBox = getSBoxOID((((GOST28147ParameterSpec)paramSpec).getSBox()));
}
catch (IllegalArgumentException e)
{
throw new InvalidParameterSpecException(e.getMessage());
}
}
else
{
throw new InvalidParameterSpecException("IvParameterSpec required to initialise a IV parameters algorithm parameters object");
}
}
protected void localInit(
byte[] params)
throws IOException
{
ASN1Primitive asn1Params = ASN1Primitive.fromByteArray(params);
if (asn1Params instanceof ASN1OctetString)
{
this.iv = ASN1OctetString.getInstance(asn1Params).getOctets();
}
else if (asn1Params instanceof ASN1Sequence)
{
GOST28147Parameters gParams = GOST28147Parameters.getInstance(asn1Params);
this.sBox = gParams.getEncryptionParamSet();
this.iv = gParams.getIV();
}
else
{
throw new IOException("Unable to recognize parameters");
}
}
protected String engineToString()
{
return "GOST 28147 IV Parameters";
}
}
public static class Mappings
extends AlgorithmProvider
{
private static final String PREFIX = GOST28147.class.getName();
public Mappings()
{
}
public void configure(ConfigurableProvider provider)
{
provider.addAlgorithm("Cipher.GOST28147", PREFIX + "$ECB");
provider.addAlgorithm("Alg.Alias.Cipher.GOST", "GOST28147");
provider.addAlgorithm("Alg.Alias.Cipher.GOST-28147", "GOST28147");
provider.addAlgorithm("Cipher." + CryptoProObjectIdentifiers.gostR28147_gcfb, PREFIX + "$GCFB");
provider.addAlgorithm("KeyGenerator.GOST28147", PREFIX + "$KeyGen");
provider.addAlgorithm("Alg.Alias.KeyGenerator.GOST", "GOST28147");
provider.addAlgorithm("Alg.Alias.KeyGenerator.GOST-28147", "GOST28147");
provider.addAlgorithm("Alg.Alias.KeyGenerator." + CryptoProObjectIdentifiers.gostR28147_gcfb, "GOST28147");
provider.addAlgorithm("AlgorithmParameters." + "GOST28147", PREFIX + "$AlgParams");
provider.addAlgorithm("AlgorithmParameterGenerator." + "GOST28147", PREFIX + "$AlgParamGen");
provider.addAlgorithm("Alg.Alias.AlgorithmParameters." + CryptoProObjectIdentifiers.gostR28147_gcfb, "GOST28147");
provider.addAlgorithm("Alg.Alias.AlgorithmParameterGenerator." + CryptoProObjectIdentifiers.gostR28147_gcfb, "GOST28147");
provider.addAlgorithm("Cipher." + CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_KeyWrap, PREFIX + "$CryptoProWrap");
provider.addAlgorithm("Cipher." + CryptoProObjectIdentifiers.id_Gost28147_89_None_KeyWrap, PREFIX + "$GostWrap");
provider.addAlgorithm("Mac.GOST28147MAC", PREFIX + "$Mac");
provider.addAlgorithm("Alg.Alias.Mac.GOST28147", "GOST28147MAC");
}
}
}