org.cryptacular.adapter.AEADBlockCipherAdapter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of cryptacular Show documentation

The spectacular complement to the Bouncy Castle crypto API for Java.

There is a newer version: 1.2.7

/* See LICENSE for licensing and NOTICE for copyright. */
package org.cryptacular.adapter;

import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.InvalidCipherTextException;
import org.bouncycastle.crypto.modes.AEADBlockCipher;
import org.cryptacular.CryptoException;

/**
 * Adapts a {@link AEADBlockCipherAdapter}.
 *
 * @author  Middleware Services
 */
public class AEADBlockCipherAdapter implements BlockCipherAdapter
{

  /** All methods delegate to this instance. */
  private final AEADBlockCipher cipherDelegate;


  /**
   * Creates a new instance that delegates to the given cipher.
   *
   * @param  delegate  Adapted cipher.
   */
  public AEADBlockCipherAdapter(final AEADBlockCipher delegate)
  {
    cipherDelegate = delegate;
  }


  @Override
  public int getOutputSize(final int len)
  {
    return cipherDelegate.getOutputSize(len);
  }


  @Override
  public void init(final boolean forEncryption, final CipherParameters params) throws CryptoException
  {
    try {
      cipherDelegate.init(forEncryption, params);
    } catch (RuntimeException e) {
      throw new CryptoException("Cipher initialization error", e);
    }
  }


  @Override
  public int processBytes(final byte[] in, final int inOff, final int len, final byte[] out, final int outOff)
      throws CryptoException
  {
    try {
      return cipherDelegate.processBytes(in, inOff, len, out, outOff);
    } catch (RuntimeException e) {
      throw new CryptoException("Cipher processing error", e);
    }
  }


  @Override
  public int doFinal(final byte[] out, final int outOff) throws CryptoException
  {
    try {
      return cipherDelegate.doFinal(out, outOff);
    } catch (InvalidCipherTextException e) {
      throw new CryptoException("Error finalizing cipher", e);
    }
  }


  @Override
  public void reset()
  {
    cipherDelegate.reset();
  }
}