[ 
https://issues.apache.org/jira/browse/NIFI-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400906#comment-15400906
 ] 

ASF GitHub Bot commented on NIFI-2193:
--------------------------------------

Github user brosander commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/695#discussion_r72896762
  
    --- Diff: 
nifi-toolkit/nifi-toolkit-tls/src/main/java/org/apache/nifi/toolkit/tls/util/TlsHelper.java
 ---
    @@ -0,0 +1,177 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You under the Apache License, Version 2.0
    + * (the "License"); you may not use this file except in compliance with
    + * the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.nifi.toolkit.tls.util;
    +
    +import org.apache.nifi.security.util.CertificateUtils;
    +import org.apache.nifi.toolkit.tls.commandLine.TlsToolkitCommandLine;
    +import org.apache.nifi.toolkit.tls.configuration.TlsHelperConfig;
    +import org.bouncycastle.cert.X509CertificateHolder;
    +import org.bouncycastle.cert.crmf.CRMFException;
    +import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
    +import org.bouncycastle.cert.jcajce.JcaX509ExtensionUtils;
    +import org.bouncycastle.eac.EACException;
    +import org.bouncycastle.jce.provider.BouncyCastleProvider;
    +import org.bouncycastle.openssl.PEMParser;
    +import org.bouncycastle.openssl.jcajce.JcaMiscPEMGenerator;
    +import org.bouncycastle.operator.OperatorCreationException;
    +import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
    +import org.bouncycastle.pkcs.PKCS10CertificationRequest;
    +import org.bouncycastle.pkcs.jcajce.JcaPKCS10CertificationRequest;
    +import org.bouncycastle.pkcs.jcajce.JcaPKCS10CertificationRequestBuilder;
    +import org.bouncycastle.util.io.pem.PemWriter;
    +
    +import javax.crypto.Mac;
    +import javax.crypto.spec.SecretKeySpec;
    +import javax.security.auth.x500.X500Principal;
    +import java.io.IOException;
    +import java.io.StringReader;
    +import java.io.StringWriter;
    +import java.nio.charset.StandardCharsets;
    +import java.security.GeneralSecurityException;
    +import java.security.InvalidKeyException;
    +import java.security.KeyPair;
    +import java.security.KeyPairGenerator;
    +import java.security.KeyStore;
    +import java.security.KeyStoreException;
    +import java.security.MessageDigest;
    +import java.security.NoSuchAlgorithmException;
    +import java.security.NoSuchProviderException;
    +import java.security.PublicKey;
    +import java.security.Security;
    +import java.security.SignatureException;
    +import java.security.cert.Certificate;
    +import java.security.cert.CertificateException;
    +import java.security.cert.X509Certificate;
    +import java.security.spec.InvalidKeySpecException;
    +
    +public class TlsHelper {
    +    public static final String PROVIDER = 
BouncyCastleProvider.PROVIDER_NAME;
    +    public static final String PKCS12 = "PKCS12";
    +    private final KeyPairGenerator keyPairGenerator;
    +    private final int days;
    +    private final String signingAlgorithm;
    +
    +    public TlsHelper(TlsHelperConfig tlsHelperConfig) throws 
NoSuchAlgorithmException {
    +        this(tlsHelperConfig.getDays(), tlsHelperConfig.getKeySize(), 
tlsHelperConfig.getKeyPairAlgorithm(), tlsHelperConfig.getSigningAlgorithm());
    +    }
    +
    +    public TlsHelper(TlsToolkitCommandLine tlsToolkitCommandLine) throws 
NoSuchAlgorithmException {
    +        this(tlsToolkitCommandLine.getTlsHelperConfig());
    +    }
    +
    +    public TlsHelper(int days, int keySize, String keyPairAlgorithm, 
String signingAlgorithm) throws NoSuchAlgorithmException {
    +        this(createKeyPairGenerator(keyPairAlgorithm, keySize), days, 
signingAlgorithm);
    +    }
    +
    +    protected TlsHelper(KeyPairGenerator keyPairGenerator, int days, 
String signingAlgorithm) {
    +        this.keyPairGenerator = keyPairGenerator;
    +        this.days = days;
    +        this.signingAlgorithm = signingAlgorithm;
    +    }
    +
    +    public static void addBouncyCastleProvider() {
    +        Security.addProvider(new BouncyCastleProvider());
    +    }
    +
    +    private static KeyPairGenerator createKeyPairGenerator(String 
algorithm, int keySize) throws NoSuchAlgorithmException {
    +        KeyPairGenerator instance = 
KeyPairGenerator.getInstance(algorithm);
    +        instance.initialize(keySize);
    +        return instance;
    +    }
    +
    +    public KeyPair generateKeyPair() throws NoSuchAlgorithmException {
    +        return keyPairGenerator.generateKeyPair();
    +    }
    +
    +    public void addToKeyStore(KeyStore keyStore, KeyPair keyPair, String 
alias, char[] passphrase, Certificate... certificates) throws 
GeneralSecurityException, IOException {
    +        keyStore.setKeyEntry(alias, keyPair.getPrivate(), passphrase, 
certificates);
    +    }
    +
    +    public KeyStore createKeyStore(String keyStoreType) throws 
KeyStoreException, CertificateException, NoSuchAlgorithmException, IOException, 
NoSuchProviderException {
    +        KeyStore keyStore;
    +        if (PKCS12.equals(keyStoreType)) {
    +            keyStore = KeyStore.getInstance(keyStoreType, 
BouncyCastleProvider.PROVIDER_NAME);
    +        } else {
    +            keyStore = KeyStore.getInstance(keyStoreType);
    +        }
    +        keyStore.load(null, null);
    +        return keyStore;
    +    }
    +
    +    public X509Certificate generateSelfSignedX509Certificate(KeyPair 
keyPair, String dn) throws CertificateException {
    +        return CertificateUtils.generateSelfSignedX509Certificate(keyPair, 
dn, signingAlgorithm, days);
    +    }
    +
    +    public X509Certificate generateIssuedCertificate(String dn, PublicKey 
publicKey, X509Certificate issuer, KeyPair issuerKeyPair) throws 
CertificateException {
    --- End diff --
    
    The parameters are set by the TlsHelperConfig constructor to be what was 
parsed from command line, if we want to remove that common code and add 
duplicate code at the callsites, I think the callthroughs to CertificateUtils 
should just be inlined so we don't need to worry about it.


> Command Line Keystore and Truststore utility
> --------------------------------------------
>
>                 Key: NIFI-2193
>                 URL: https://issues.apache.org/jira/browse/NIFI-2193
>             Project: Apache NiFi
>          Issue Type: New Feature
>            Reporter: Bryan Rosander
>            Assignee: Bryan Rosander
>
> In order to facilitate secure setup of NiFi, it would be useful to have a 
> command line utility capable of generating the required keystores, 
> truststore, and relevant configuration files.
> It should be able to generate keystores for each NiFi node, a truststore that 
> they all use, and relevant passwords and configuration files for using the 
> keystores and truststore.
> Additionally, in order to support distributed deployment, a web based 
> certificate authority with corresponding client will allow for each NiFi 
> instance to generate its own keypair and then request signing by the CA.



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