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Example 1 with KeyedEncryptor

use of org.apache.nifi.security.util.crypto.KeyedEncryptor in project nifi by apache.

the class EncryptContent method onTrigger.

@Override
public void onTrigger(final ProcessContext context, final ProcessSession session) {
    FlowFile flowFile = session.get();
    if (flowFile == null) {
        return;
    }
    final ComponentLog logger = getLogger();
    final String method = context.getProperty(ENCRYPTION_ALGORITHM).getValue();
    final EncryptionMethod encryptionMethod = EncryptionMethod.valueOf(method);
    final String providerName = encryptionMethod.getProvider();
    final String algorithm = encryptionMethod.getAlgorithm();
    final String password = context.getProperty(PASSWORD).getValue();
    final KeyDerivationFunction kdf = KeyDerivationFunction.valueOf(context.getProperty(KEY_DERIVATION_FUNCTION).getValue());
    final boolean encrypt = context.getProperty(MODE).getValue().equalsIgnoreCase(ENCRYPT_MODE);
    Encryptor encryptor;
    StreamCallback callback;
    try {
        if (isPGPAlgorithm(algorithm)) {
            final String filename = flowFile.getAttribute(CoreAttributes.FILENAME.key());
            final String publicKeyring = context.getProperty(PUBLIC_KEYRING).getValue();
            final String privateKeyring = context.getProperty(PRIVATE_KEYRING).getValue();
            if (encrypt && publicKeyring != null) {
                final String publicUserId = context.getProperty(PUBLIC_KEY_USERID).getValue();
                encryptor = new OpenPGPKeyBasedEncryptor(algorithm, providerName, publicKeyring, publicUserId, null, filename);
            } else if (!encrypt && privateKeyring != null) {
                final char[] keyringPassphrase = context.getProperty(PRIVATE_KEYRING_PASSPHRASE).evaluateAttributeExpressions().getValue().toCharArray();
                encryptor = new OpenPGPKeyBasedEncryptor(algorithm, providerName, privateKeyring, null, keyringPassphrase, filename);
            } else {
                final char[] passphrase = Normalizer.normalize(password, Normalizer.Form.NFC).toCharArray();
                encryptor = new OpenPGPPasswordBasedEncryptor(algorithm, providerName, passphrase, filename);
            }
        } else if (kdf.equals(KeyDerivationFunction.NONE)) {
            // Raw key
            final String keyHex = context.getProperty(RAW_KEY_HEX).getValue();
            encryptor = new KeyedEncryptor(encryptionMethod, Hex.decodeHex(keyHex.toCharArray()));
        } else {
            // PBE
            final char[] passphrase = Normalizer.normalize(password, Normalizer.Form.NFC).toCharArray();
            encryptor = new PasswordBasedEncryptor(encryptionMethod, passphrase, kdf);
        }
        if (encrypt) {
            callback = encryptor.getEncryptionCallback();
        } else {
            callback = encryptor.getDecryptionCallback();
        }
    } catch (final Exception e) {
        logger.error("Failed to initialize {}cryption algorithm because - ", new Object[] { encrypt ? "en" : "de", e });
        session.rollback();
        context.yield();
        return;
    }
    try {
        final StopWatch stopWatch = new StopWatch(true);
        flowFile = session.write(flowFile, callback);
        logger.info("successfully {}crypted {}", new Object[] { encrypt ? "en" : "de", flowFile });
        session.getProvenanceReporter().modifyContent(flowFile, stopWatch.getElapsed(TimeUnit.MILLISECONDS));
        session.transfer(flowFile, REL_SUCCESS);
    } catch (final ProcessException e) {
        logger.error("Cannot {}crypt {} - ", new Object[] { encrypt ? "en" : "de", flowFile, e });
        session.transfer(flowFile, REL_FAILURE);
    }
}
Also used : FlowFile(org.apache.nifi.flowfile.FlowFile) KeyedEncryptor(org.apache.nifi.security.util.crypto.KeyedEncryptor) PasswordBasedEncryptor(org.apache.nifi.security.util.crypto.PasswordBasedEncryptor) KeyedEncryptor(org.apache.nifi.security.util.crypto.KeyedEncryptor) OpenPGPPasswordBasedEncryptor(org.apache.nifi.security.util.crypto.OpenPGPPasswordBasedEncryptor) OpenPGPKeyBasedEncryptor(org.apache.nifi.security.util.crypto.OpenPGPKeyBasedEncryptor) EncryptionMethod(org.apache.nifi.security.util.EncryptionMethod) ComponentLog(org.apache.nifi.logging.ComponentLog) OpenPGPKeyBasedEncryptor(org.apache.nifi.security.util.crypto.OpenPGPKeyBasedEncryptor) StreamCallback(org.apache.nifi.processor.io.StreamCallback) ProcessException(org.apache.nifi.processor.exception.ProcessException) DecoderException(org.apache.commons.codec.DecoderException) StopWatch(org.apache.nifi.util.StopWatch) KeyDerivationFunction(org.apache.nifi.security.util.KeyDerivationFunction) ProcessException(org.apache.nifi.processor.exception.ProcessException) OpenPGPPasswordBasedEncryptor(org.apache.nifi.security.util.crypto.OpenPGPPasswordBasedEncryptor) PasswordBasedEncryptor(org.apache.nifi.security.util.crypto.PasswordBasedEncryptor) OpenPGPPasswordBasedEncryptor(org.apache.nifi.security.util.crypto.OpenPGPPasswordBasedEncryptor)

Aggregations

DecoderException (org.apache.commons.codec.DecoderException)1 FlowFile (org.apache.nifi.flowfile.FlowFile)1 ComponentLog (org.apache.nifi.logging.ComponentLog)1 ProcessException (org.apache.nifi.processor.exception.ProcessException)1 StreamCallback (org.apache.nifi.processor.io.StreamCallback)1 EncryptionMethod (org.apache.nifi.security.util.EncryptionMethod)1 KeyDerivationFunction (org.apache.nifi.security.util.KeyDerivationFunction)1 KeyedEncryptor (org.apache.nifi.security.util.crypto.KeyedEncryptor)1 OpenPGPKeyBasedEncryptor (org.apache.nifi.security.util.crypto.OpenPGPKeyBasedEncryptor)1 OpenPGPPasswordBasedEncryptor (org.apache.nifi.security.util.crypto.OpenPGPPasswordBasedEncryptor)1 PasswordBasedEncryptor (org.apache.nifi.security.util.crypto.PasswordBasedEncryptor)1 StopWatch (org.apache.nifi.util.StopWatch)1