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The FIPS 140-2 Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms certified to FIPS 140-2 level 1. This jar contains the debug version JCE provider and low-level API for the BC-FJA version 1.0.2.3, FIPS Certificate #3514. Please note the debug jar is not certified.
package org.bouncycastle.crypto.general;
import java.security.SecureRandom;
import org.bouncycastle.crypto.IllegalKeyException;
import org.bouncycastle.crypto.ParametersWithIV;
import org.bouncycastle.crypto.SymmetricKey;
import org.bouncycastle.crypto.SymmetricSecretKey;
import org.bouncycastle.crypto.internal.BlockCipher;
import org.bouncycastle.crypto.internal.BufferedBlockCipher;
import org.bouncycastle.crypto.internal.KeyGenerationParameters;
import org.bouncycastle.crypto.internal.Mac;
import org.bouncycastle.crypto.internal.ValidatedSymmetricKey;
import org.bouncycastle.crypto.internal.modes.AEADBlockCipher;
import org.bouncycastle.crypto.internal.params.KeyParameter;
import org.bouncycastle.crypto.internal.params.KeyParameterImpl;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
/**
* Source class for implementations of DES based algorithms.
*/
public final class DES
{
private DES()
{
}
/**
* Raw DES algorithm, can be used for creating general purpose DES keys.
*/
public static final GeneralAlgorithm ALGORITHM = new GeneralAlgorithm("DES");
private static final EngineProvider ENGINE_PROVIDER;
static
{
EngineProvider provider = new EngineProvider();
provider.createEngine();
ENGINE_PROVIDER = provider;
}
/**
* DES in electronic code book (ECB) mode.
*/
public static final Parameters ECB = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.ECB));
/**
* DES in electronic code book mode with PKCS#7/PKCS#5 padding.
*/
public static final Parameters ECBwithPKCS7 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.ECB, Padding.PKCS7));
/**
* DES in electronic code book mode with ISO10126-2 padding.
*/
public static final Parameters ECBwithISO10126_2 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.ECB, Padding.ISO10126_2));
/**
* DES in electronic code book mode with X9.23 padding.
*/
public static final Parameters ECBwithX923 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.ECB, Padding.X923));
/**
* DES in electronic code book mode with ISO7816-4 padding.
*/
public static final Parameters ECBwithISO7816_4 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.ECB, Padding.ISO7816_4));
/**
* DES in electronic code book mode with trailing bit complement (TBC) padding.
*/
public static final Parameters ECBwithTBC = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.ECB, Padding.TBC));
/**
* DES in cipher block chaining (CBC) mode.
*/
public static final Parameters CBC = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC));
/**
* DES in cipher block chaining mode with PKCS#7/PKCS#5 padding.
*/
public static final Parameters CBCwithPKCS7 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.PKCS7));
/**
* DES in cipher block chaining mode with ISO10126-2 padding.
*/
public static final Parameters CBCwithISO10126_2 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.ISO10126_2));
/**
* DES in cipher block chaining mode with X9.23 padding.
*/
public static final Parameters CBCwithX923 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.X923));
/**
* DES in cipher block chaining mode with ISO7816-4 padding.
*/
public static final Parameters CBCwithISO7816_4 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.ISO7816_4));
/**
* DES in cipher block chaining mode with trailing bit complement (TBC) padding.
*/
public static final Parameters CBCwithTBC = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.TBC));
/**
* DES in cipher block chaining mode cipher text stealing type 1.
*/
public static final Parameters CBCwithCS1 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.CS1));
/**
* DES in cipher block chaining mode cipher text stealing type 2.
*/
public static final Parameters CBCwithCS2 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.CS2));
/**
* DES in cipher block chaining mode cipher text stealing type 3.
*/
public static final Parameters CBCwithCS3 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CBC, Padding.CS3));
/**
* DES in cipher feedback (CFB) mode, 8 bit block size.
*/
public static final Parameters CFB8 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CFB8));
/**
* DES in cipher feedback (CFB) mode, 64 bit block size.
*/
public static final Parameters CFB64 = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CFB64));
/**
* DES in output feedback (OFB) mode, 64 bit block size.
*/
public static final Parameters OFB = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.OFB64));
/**
* DES in counter (CTR) mode.
*/
public static final Parameters CTR = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.CTR));
/**
* DES in EAX mode..
*/
public static final AuthParameters EAX = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.EAX));
/**
* DES in OpenPGP cipher feedback (CFB) mode.
*/
public static final Parameters OpenPGPCFB = new Parameters(new GeneralAlgorithm(ALGORITHM, Mode.OpenPGPCFB));
/**
* DES cipher-based MAC algorithm.
*/
public static final AuthParameters CMAC = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.CMAC));
/**
* DES CBC-MAC.
*/
public static final AuthParameters CBC_MAC = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.CBCMAC));
/**
* DES CBC-MAC with ISO7816-4 Padding.
*/
public static final AuthParameters CBC_MACwithISO7816_4 = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.CBCMAC, Padding.ISO7816_4));
/**
* DES ISO9797 MAC Algorithm 3
*/
public static final AuthParameters ISO9797alg3Mac = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.ISO9797alg3));
/**
* DES ISO9797 MAC Algorithm 3 with ISO7816-4 Padding
*/
public static final AuthParameters ISO9797alg3MACwithISO7816_4 = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.ISO9797alg3, Padding.ISO7816_4));
/**
* DES CFB8MAC.
*/
public static final AuthParameters CFB8_MAC = new AuthParameters(new GeneralAlgorithm(ALGORITHM, Mode.CFB8MAC));
/**
* Parameters for general DES block cipher modes.
*/
public static final class Parameters
extends GeneralParameters
implements ParametersWithIV
{
final private byte[] iv;
Parameters(GeneralAlgorithm algorithm)
{
this(algorithm, null);
}
private Parameters(GeneralAlgorithm algorithm, byte[] iv)
{
super(algorithm);
((Mode)algorithm.basicVariation()).checkIv(iv, 8);
this.iv = iv;
}
public Parameters withIV(byte[] iv)
{
return new Parameters(this.getAlgorithm(), Arrays.clone(iv));
}
public Parameters withIV(SecureRandom random)
{
return new Parameters(this.getAlgorithm(), this.getAlgorithm().createDefaultIvIfNecessary(8, random));
}
public byte[] getIV()
{
return Arrays.clone(iv);
}
}
/**
* Parameters for DES AEAD and MAC modes..
*/
public static final class AuthParameters
extends GeneralAuthParameters
{
private AuthParameters(GeneralAlgorithm algorithm, byte[] iv, int tagLenInBits)
{
super(algorithm, 8, iv, tagLenInBits);
}
/**
* Base constructor - the algorithm, null IV.
* In this case the tag length defaults to the 64 for CMAC, 32 bits otherwise.
*
* @param algorithm algorithm mode.
*/
AuthParameters(GeneralAlgorithm algorithm)
{
this(algorithm, null, Utils.getDefaultMacSize(algorithm, 64)); // tag full blocksize or half
}
protected AuthParameters create(GeneralAlgorithm algorithm, byte[] iv, int macSizeInBits)
{
return new AuthParameters(algorithm, iv, macSizeInBits);
}
}
/**
* DES key generator.
*/
public static final class KeyGenerator
extends GuardedSymmetricKeyGenerator
{
private final GeneralAlgorithm algorithm;
private final int keySizeInBits;
private final SecureRandom random;
public KeyGenerator(SecureRandom random)
{
this(ALGORITHM, 56, random);
}
public KeyGenerator(GeneralParameters algorithm, int keySizeInBits, SecureRandom random)
{
this((GeneralAlgorithm)algorithm.getAlgorithm(), keySizeInBits, random);
}
private KeyGenerator(GeneralAlgorithm algorithm, int keySizeInBits, SecureRandom random)
{
this.algorithm = algorithm;
this.keySizeInBits = keySizeInBits;
this.random = random;
}
public SymmetricKey doGenerateKey()
{
CipherKeyGenerator cipherKeyGenerator = new DesKeyGenerator();
cipherKeyGenerator.init(new KeyGenerationParameters(random, keySizeInBits));
return new SymmetricSecretKey(algorithm, cipherKeyGenerator.generateKey());
}
}
/**
* Factory for basic DES encryption/decryption operators.
*/
public static final class OperatorFactory
extends GuardedSymmetricOperatorFactory
{
@Override
protected BufferedBlockCipher createCipher(boolean forEncryption, SymmetricKey key, Parameters parameters, SecureRandom random)
{
return CipherUtils.createStandardCipher(forEncryption, validateKey(key, parameters.getAlgorithm()), ENGINE_PROVIDER, parameters, random);
}
}
/**
* Factory for DES AEAD encryption/decryption operators.
*/
public static final class AEADOperatorFactory
extends GuardedAEADOperatorFactory
{
@Override
protected AEADBlockCipher createAEADCipher(boolean forEncryption, SymmetricKey key, AuthParameters parameters)
{
return CipherUtils.createStandardAEADCipher(forEncryption, validateKey(key, parameters.getAlgorithm()), ENGINE_PROVIDER, parameters);
}
}
/**
* Factory for producing DES MAC calculators.
*/
public static final class MACOperatorFactory
extends GuardedMACOperatorFactory
{
@Override
protected Mac createMAC(SymmetricKey key, final AuthParameters parameters)
{
return CipherUtils.createStandardMac(validateKey(key, parameters.getAlgorithm()), ENGINE_PROVIDER, parameters);
}
@Override
protected int calculateMACSize(AuthParameters parameters)
{
return Utils.bitsToBytes(parameters.macLenInBits);
}
}
private static ValidatedSymmetricKey validateKey(SymmetricKey key, GeneralAlgorithm paramAlgorithm)
{
ValidatedSymmetricKey vKey = PrivilegedUtils.getValidatedKey(key);
int keyLength = vKey.getKeySizeInBits();
if (keyLength != 64)
{
if (paramAlgorithm.basicVariation() != Mode.ISO9797alg3)
{
throw new IllegalKeyException("DES key must be of length 64 bits including parity");
}
else
{
if (keyLength != 128 && keyLength != 192)
{
throw new IllegalKeyException("DES key for ISO979alg3 must be of length 128 or 192 bits including parity");
}
}
}
else
{
if (paramAlgorithm.basicVariation() == Mode.ISO9797alg3)
{
throw new IllegalKeyException("DES key for ISO979alg3 must be of length 128 or 192 bits including parity");
}
}
if (!vKey.getAlgorithm().equals(TripleDES.ALGORITHM))
{
Utils.checkKeyAlgorithm(vKey, ALGORITHM, paramAlgorithm);
}
return vKey;
}
private static final class EngineProvider
implements org.bouncycastle.crypto.internal.EngineProvider
{
public BlockCipher createEngine()
{
return SelfTestExecutor.validate(ALGORITHM, new DesEngine(), new VariantKatTest()
{
public void evaluate(DesEngine engine)
{
byte[] input = Hex.decode("00112233445566778899aabbccddeeff");
byte[] output = Hex.decode("e7109a793167d69a0e62538ba866f7f8");
byte[] tmp = new byte[input.length];
KeyParameter key = new KeyParameterImpl(Hex.decode("1011121314151617"));
engine.init(true, key);
engine.processBlock(input, 0, tmp, 0);
engine.processBlock(input, 8, tmp, 8);
if (!Arrays.areEqual(output, tmp))
{
fail("Failed self test on encryption");
}
engine.init(false, key);
engine.processBlock(tmp, 0, tmp, 0);
engine.processBlock(tmp, 8, tmp, 8);
if (!Arrays.areEqual(input, tmp))
{
fail("Failed self test on decryption");
}
}
});
}
}
}
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