package org.bouncycastle.jce.provider;
import org.bouncycastle.crypto.CipherKeyGenerator;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.crypto.generators.DESKeyGenerator;
import org.bouncycastle.crypto.generators.DESedeKeyGenerator;
import javax.crypto.KeyGeneratorSpi;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidParameterException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
public class JCEKeyGenerator
extends KeyGeneratorSpi
{
protected String algName;
protected int keySize;
protected int defaultKeySize;
protected CipherKeyGenerator engine;
protected boolean uninitialised = true;
protected JCEKeyGenerator(
String algName,
int defaultKeySize,
CipherKeyGenerator engine)
{
this.algName = algName;
this.keySize = this.defaultKeySize = defaultKeySize;
this.engine = engine;
}
protected void engineInit(
AlgorithmParameterSpec params,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
throw new InvalidAlgorithmParameterException("Not Implemented");
}
protected void engineInit(
SecureRandom random)
{
if (random != null)
{
engine.init(new KeyGenerationParameters(random, defaultKeySize));
uninitialised = false;
}
}
protected void engineInit(
int keySize,
SecureRandom random)
{
try
{
engine.init(new KeyGenerationParameters(random, keySize));
uninitialised = false;
}
catch (IllegalArgumentException e)
{
throw new InvalidParameterException(e.getMessage());
}
}
protected SecretKey engineGenerateKey()
{
if (uninitialised)
{
engine.init(new KeyGenerationParameters(new SecureRandom(), defaultKeySize));
uninitialised = false;
}
return new SecretKeySpec(engine.generateKey(), algName);
}
/**
* the generators that are defined directly off us.
*/
/**
* DES
*/
public static class DES
extends JCEKeyGenerator
{
public DES()
{
super("DES", 64, new DESKeyGenerator());
}
}
/**
* DESede - the default for this is to generate a key in
* a-b-a format that's 24 bytes long but has 16 bytes of
* key material (the first 8 bytes is repeated as the last
* 8 bytes). If you give it a size, you'll get just what you
* asked for.
*/
public static class DESede
extends JCEKeyGenerator
{
private boolean keySizeSet = false;
public DESede()
{
super("DESede", 192, new DESedeKeyGenerator());
}
protected void engineInit(
int keySize,
SecureRandom random)
{
super.engineInit(keySize, random);
keySizeSet = true;
}
protected SecretKey engineGenerateKey()
{
if (uninitialised)
{
engine.init(new KeyGenerationParameters(new SecureRandom(), defaultKeySize));
uninitialised = false;
}
//
// if no key size has been defined generate a 24 byte key in
// the a-b-a format
//
if (!keySizeSet)
{
byte[] k = engine.generateKey();
System.arraycopy(k, 0, k, 16, 8);
return (SecretKey)(new SecretKeySpec(k, algName));
}
else
{
return (SecretKey)(new SecretKeySpec(engine.generateKey(), algName));
}
}
}
/**
* generate a desEDE key in the a-b-c format.
*/
public static class DESede3
extends JCEKeyGenerator
{
public DESede3()
{
super("DESede3", 192, new DESedeKeyGenerator());
}
}
/**
* SKIPJACK
*/
public static class Skipjack
extends JCEKeyGenerator
{
public Skipjack()
{
super("SKIPJACK", 80, new CipherKeyGenerator());
}
}
/**
* Blowfish
*/
public static class Blowfish
extends JCEKeyGenerator
{
public Blowfish()
{
super("Blowfish", 448, new CipherKeyGenerator());
}
}
/**
* Twofish
*/
public static class Twofish
extends JCEKeyGenerator
{
public Twofish()
{
super("Twofish", 256, new CipherKeyGenerator());
}
}
/**
* RC2
*/
public static class RC2
extends JCEKeyGenerator
{
public RC2()
{
super("RC2", 128, new CipherKeyGenerator());
}
}
/**
* RC4
*/
public static class RC4
extends JCEKeyGenerator
{
public RC4()
{
super("RC4", 128, new CipherKeyGenerator());
}
}
/**
* RC5
*/
public static class RC5
extends JCEKeyGenerator
{
public RC5()
{
super("RC5", 128, new CipherKeyGenerator());
}
}
/**
* RC5
*/
public static class RC564
extends JCEKeyGenerator
{
public RC564()
{
super("RC5-64", 256, new CipherKeyGenerator());
}
}
/**
* RC6
*/
public static class RC6
extends JCEKeyGenerator
{
public RC6()
{
super("RC6", 256, new CipherKeyGenerator());
}
}
/**
* GOST28147
*/
public static class GOST28147
extends JCEKeyGenerator
{
public GOST28147()
{
super("GOST28147", 256, new CipherKeyGenerator());
}
}
/**
* Rijndael
*/
public static class Rijndael
extends JCEKeyGenerator
{
public Rijndael()
{
super("Rijndael", 192, new CipherKeyGenerator());
}
}
/**
* Serpent
*/
public static class Serpent
extends JCEKeyGenerator
{
public Serpent()
{
super("Serpent", 192, new CipherKeyGenerator());
}
}
/**
* CAST6
*/
public static class CAST6
extends JCEKeyGenerator
{
public CAST6()
{
super("CAST6", 256, new CipherKeyGenerator());
}
}
/**
* TEA
*/
public static class TEA
extends JCEKeyGenerator
{
public TEA()
{
super("TEA", 128, new CipherKeyGenerator());
}
}
/**
* XTEA
*/
public static class XTEA
extends JCEKeyGenerator
{
public XTEA()
{
super("XTEA", 128, new CipherKeyGenerator());
}
}
/**
* Salsa20
*/
public static class Salsa20
extends JCEKeyGenerator
{
public Salsa20()
{
super("Salsa20", 128, new CipherKeyGenerator());
}
}
/**
* HC128
*/
public static class HC128
extends JCEKeyGenerator
{
public HC128()
{
super("HC128", 128, new CipherKeyGenerator());
}
}
/**
* HC256
*/
public static class HC256
extends JCEKeyGenerator
{
public HC256()
{
super("HC256", 256, new CipherKeyGenerator());
}
}
/**
* VMPC
*/
public static class VMPC
extends JCEKeyGenerator
{
public VMPC()
{
super("VMPC", 128, new CipherKeyGenerator());
}
}
/**
* VMPC-KSA3
*/
public static class VMPCKSA3
extends JCEKeyGenerator
{
public VMPCKSA3()
{
super("VMPC-KSA3", 128, new CipherKeyGenerator());
}
}
// HMAC Related secret keys..
/**
* MD2HMAC
*/
public static class MD2HMAC
extends JCEKeyGenerator
{
public MD2HMAC()
{
super("HMACMD2", 128, new CipherKeyGenerator());
}
}
/**
* MD4HMAC
*/
public static class MD4HMAC
extends JCEKeyGenerator
{
public MD4HMAC()
{
super("HMACMD4", 128, new CipherKeyGenerator());
}
}
/**
* MD5HMAC
*/
public static class MD5HMAC
extends JCEKeyGenerator
{
public MD5HMAC()
{
super("HMACMD5", 128, new CipherKeyGenerator());
}
}
/**
* RIPE128HMAC
*/
public static class RIPEMD128HMAC
extends JCEKeyGenerator
{
public RIPEMD128HMAC()
{
super("HMACRIPEMD128", 128, new CipherKeyGenerator());
}
}
/**
* RIPE160HMAC
*/
public static class RIPEMD160HMAC
extends JCEKeyGenerator
{
public RIPEMD160HMAC()
{
super("HMACRIPEMD160", 160, new CipherKeyGenerator());
}
}
/**
* HMACSHA1
*/
public static class HMACSHA1
extends JCEKeyGenerator
{
public HMACSHA1()
{
super("HMACSHA1", 160, new CipherKeyGenerator());
}
}
/**
* HMACSHA224
*/
public static class HMACSHA224
extends JCEKeyGenerator
{
public HMACSHA224()
{
super("HMACSHA224", 224, new CipherKeyGenerator());
}
}
/**
* HMACSHA256
*/
public static class HMACSHA256
extends JCEKeyGenerator
{
public HMACSHA256()
{
super("HMACSHA256", 256, new CipherKeyGenerator());
}
}
/**
* HMACSHA384
*/
public static class HMACSHA384
extends JCEKeyGenerator
{
public HMACSHA384()
{
super("HMACSHA384", 384, new CipherKeyGenerator());
}
}
/**
* HMACSHA512
*/
public static class HMACSHA512
extends JCEKeyGenerator
{
public HMACSHA512()
{
super("HMACSHA512", 512, new CipherKeyGenerator());
}
}
/**
* HMACTIGER
*/
public static class HMACTIGER
extends JCEKeyGenerator
{
public HMACTIGER()
{
super("HMACTIGER", 192, new CipherKeyGenerator());
}
}
}