io.github.mmm.crypto.symmetric.key.pbe.SymmetricKeyConfigPbe Maven / Gradle / Ivy

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package io.github.mmm.crypto.symmetric.key.pbe;

import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;

import io.github.mmm.crypto.provider.SecurityProvider;
import io.github.mmm.crypto.symmetric.key.SymmetricKeyConfig;
import io.github.mmm.crypto.symmetric.key.spec.SymmetricKeySpecFactoryImplPbe;

/**
 * {@link SymmetricKeyConfig} for PBE (Password Based Encryption).
 *
 * @author Joerg Hohwiller (hohwille at users.sourceforge.net)
 * @since 1.0.0
 */
public class SymmetricKeyConfigPbe extends SymmetricKeyConfig {

  private static final byte[] SALT = new byte[] { (byte) 0x0fc, (byte) 0x007, (byte) 0x0cf, (byte) 0x01c, (byte) 0x003, (byte) 0x00b,
  (byte) 0x0ff, (byte) 0x020, (byte) 0x021, (byte) 0x0aa, (byte) 0x027, (byte) 0x0b3, (byte) 0x091, (byte) 0x0e6, (byte) 0x0c5,
  (byte) 0x069, (byte) 0x0ee, (byte) 0x08b, (byte) 0x017, (byte) 0x032 };

  /**
   * The constructor.
   *
   * @param algorithm the {@link #getAlgorithm() algorithm}.
   * @param keyLength the {@link #getKeyLength() key length} in bits.
   */
  public SymmetricKeyConfigPbe(String algorithm, int keyLength) {

    this(algorithm, keyLength, 65536, SALT);
  }

  /**
   * The constructor.
   *
   * @param algorithm the {@link #getAlgorithm() algorithm}.
   * @param provider the {@link SecurityProvider}.
   * @param keyLength the {@link #getKeyLength() key length} in bits.
   */
  public SymmetricKeyConfigPbe(String algorithm, SecurityProvider provider, int keyLength) {

    this(algorithm, provider, keyLength, 65536, SALT);
  }

  /**
   * The constructor.
   *
   * @param algorithm the {@link #getAlgorithm() algorithm}.
   * @param keyLength the {@link #getKeyLength() key length} in bits.
   * @param iterationCount the {@link io.github.mmm.crypto.AbstractGetIterationCount#getIterationCount()
   *        iteration count}.
   */
  public SymmetricKeyConfigPbe(String algorithm, int keyLength, int iterationCount) {

    this(algorithm, keyLength, iterationCount, SALT);
  }

  /**
   * The constructor.
   *
   * @param algorithm the {@link #getAlgorithm() algorithm}.
   * @param keyLength the {@link #getKeyLength() key length} in bits.
   * @param iterationCount the {@link io.github.mmm.crypto.AbstractGetIterationCount#getIterationCount()
   *        iteration count}.
   * @param salt the {@link javax.crypto.spec.PBEKeySpec#getSalt() salt}.
   */
  public SymmetricKeyConfigPbe(String algorithm, int keyLength, int iterationCount, byte[] salt) {

    this(algorithm, null, keyLength, iterationCount, salt);
  }

  /**
   * The constructor.
   *
   * @param algorithm the {@link #getAlgorithm() algorithm}.
   * @param provider the {@link SecurityProvider}.
   * @param keyLength the {@link #getKeyLength() key length} in bits.
   * @param iterationCount the {@link io.github.mmm.crypto.AbstractGetIterationCount#getIterationCount()
   *        iteration count}.
   * @param salt the {@link javax.crypto.spec.PBEKeySpec#getSalt() salt}.
   */
  public SymmetricKeyConfigPbe(String algorithm, SecurityProvider provider, int keyLength, int iterationCount, byte[] salt) {

    super(algorithm, provider, keyLength, new SymmetricKeySpecFactoryImplPbe(salt, iterationCount, keyLength));
  }

  @Override
  public int getKeyLength(SecretKey key, SecretKeyFactory keyFactory) {

    return 0;
    // try {

    // if (key instanceof org.bouncycastle.jcajce.provider.symmetric.util.BCPBEKey) {
    // org.bouncycastle.jcajce.provider.symmetric.util.BCPBEKey pbeKey =
    // (org.bouncycastle.jcajce.provider.symmetric.util.BCPBEKey) key;
    // return pbeKey.getKeySize();
    // }
    // PBEKeySpec keySpec = (PBEKeySpec) keyFactory.getKeySpec(key, PBEKeySpec.class);
    // return keySpec.getKeyLength();
    // } catch (InvalidKeySpecException e) {
    // throw new IllegalStateException(e);
    // }
  }

}