How to use

OperatorUtils

in

org.spongycastle.operator.jcajce

public byte[] generateWrappedKey(GenericKey encryptionKey)
  throws OperatorException
{
  Key contentEncryptionKeySpec = OperatorUtils.getJceKey(encryptionKey);
  Cipher keyEncryptionCipher = helper.createSymmetricWrapper(this.getAlgorithmIdentifier().getAlgorithm());
  try
  {
    keyEncryptionCipher.init(Cipher.WRAP_MODE, wrappingKey, random);
    return keyEncryptionCipher.wrap(contentEncryptionKeySpec);
  }
  catch (GeneralSecurityException e)
  {
    throw new OperatorException("cannot wrap key: " + e.getMessage(), e);
  }
}

public byte[] generateWrappedKey(GenericKey encryptionKey)
  throws OperatorException
{
  Key contentEncryptionKeySpec = OperatorUtils.getJceKey(encryptionKey);
  Cipher keyEncryptionCipher = helper.createSymmetricWrapper(this.getAlgorithmIdentifier().getAlgorithm());
  try
  {
    keyEncryptionCipher.init(Cipher.WRAP_MODE, wrappingKey, random);
    return keyEncryptionCipher.wrap(contentEncryptionKeySpec);
  }
  catch (GeneralSecurityException e)
  {
    throw new OperatorException("cannot wrap key: " + e.getMessage(), e);
  }
}

encryptedKeyBytes = keyEncryptionCipher.wrap(OperatorUtils.getJceKey(encryptionKey));
  encryptedKeyBytes = keyEncryptionCipher.doFinal(OperatorUtils.getJceKey(encryptionKey).getEncoded());

encryptedKeyBytes = keyEncryptionCipher.wrap(OperatorUtils.getJceKey(encryptionKey));
  encryptedKeyBytes = keyEncryptionCipher.doFinal(OperatorUtils.getJceKey(encryptionKey).getEncoded());

  public byte[] generateWrappedKey(GenericKey encryptionKey)
    throws OperatorException
  {
    Cipher keyEncryptionCipher = helper.createAsymmetricWrapper(getAlgorithmIdentifier().getAlgorithm(), new HashMap());

    try
    {
      DEROtherInfo otherInfo = new DEROtherInfo.Builder(JceSymmetricKeyWrapper.determineKeyEncAlg(symmetricWrappingAlg, keySizeInBits), partyUInfo, partyVInfo).build();
      KTSParameterSpec ktsSpec = new KTSParameterSpec.Builder(symmetricWrappingAlg, keySizeInBits, otherInfo.getEncoded()).build();

      keyEncryptionCipher.init(Cipher.WRAP_MODE, publicKey, ktsSpec, random);

      return keyEncryptionCipher.wrap(OperatorUtils.getJceKey(encryptionKey));
    }
    catch (Exception e)
    {
      throw new OperatorException("Unable to wrap contents key: " + e.getMessage(), e);
    }
  }
}

  public byte[] generateWrappedKey(GenericKey encryptionKey)
    throws OperatorException
  {
    Cipher keyEncryptionCipher = helper.createAsymmetricWrapper(getAlgorithmIdentifier().getAlgorithm(), new HashMap());

    try
    {
      DEROtherInfo otherInfo = new DEROtherInfo.Builder(JceSymmetricKeyWrapper.determineKeyEncAlg(symmetricWrappingAlg, keySizeInBits), partyUInfo, partyVInfo).build();
      KTSParameterSpec ktsSpec = new KTSParameterSpec.Builder(symmetricWrappingAlg, keySizeInBits, otherInfo.getEncoded()).build();

      keyEncryptionCipher.init(Cipher.WRAP_MODE, publicKey, ktsSpec, random);

      return keyEncryptionCipher.wrap(OperatorUtils.getJceKey(encryptionKey));
    }
    catch (Exception e)
    {
      throw new OperatorException("Unable to wrap contents key: " + e.getMessage(), e);
    }
  }
}