exceptionfactory commented on a change in pull request #5407: URL: https://github.com/apache/nifi/pull/5407#discussion_r716748297
########## File path: nifi-commons/nifi-repository-encryption/src/main/java/org/apache/nifi/repository/encryption/configuration/kms/StandardRepositoryKeyProviderFactory.java ########## @@ -0,0 +1,216 @@ +/* + * 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.repository.encryption.configuration.kms; + +import org.apache.nifi.repository.encryption.configuration.EncryptedRepositoryType; +import org.apache.nifi.repository.encryption.configuration.EncryptionKeyProvider; +import org.apache.nifi.security.kms.FileBasedKeyProvider; +import org.apache.nifi.security.kms.KeyProvider; +import org.apache.nifi.security.kms.KeyProviderFactory; +import org.apache.nifi.security.kms.KeyStoreKeyProvider; +import org.apache.nifi.security.kms.StaticKeyProvider; +import org.apache.nifi.security.kms.configuration.FileBasedKeyProviderConfiguration; +import org.apache.nifi.security.kms.configuration.KeyProviderConfiguration; +import org.apache.nifi.security.kms.configuration.KeyStoreKeyProviderConfiguration; +import org.apache.nifi.security.kms.configuration.StaticKeyProviderConfiguration; +import org.apache.nifi.security.util.KeyStoreUtils; +import org.apache.nifi.security.util.KeystoreType; +import org.apache.nifi.security.util.TlsException; +import org.apache.nifi.util.NiFiBootstrapUtils; +import org.apache.nifi.util.NiFiProperties; +import org.apache.nifi.util.StringUtils; +import org.bouncycastle.util.encoders.DecoderException; +import org.bouncycastle.util.encoders.Hex; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.crypto.SecretKey; +import javax.crypto.spec.SecretKeySpec; +import java.io.IOException; +import java.security.KeyStore; +import java.util.HashMap; +import java.util.Map; +import java.util.Objects; + +import static org.apache.nifi.util.NiFiProperties.CONTENT_REPOSITORY_ENCRYPTION_KEY_PROVIDER_PASSWORD; +import static org.apache.nifi.util.NiFiProperties.FLOWFILE_REPOSITORY_ENCRYPTION_KEY_PROVIDER_PASSWORD; +import static org.apache.nifi.util.NiFiProperties.PROVENANCE_REPO_ENCRYPTION_KEY_PROVIDER_PASSWORD; +import static org.apache.nifi.util.NiFiProperties.REPOSITORY_ENCRYPTION_KEY_PROVIDER; +import static org.apache.nifi.util.NiFiProperties.CONTENT_REPOSITORY_ENCRYPTION_KEY_PROVIDER_LOCATION; +import static org.apache.nifi.util.NiFiProperties.CONTENT_REPOSITORY_ENCRYPTION_KEY_PROVIDER_IMPLEMENTATION_CLASS; +import static org.apache.nifi.util.NiFiProperties.FLOWFILE_REPOSITORY_ENCRYPTION_KEY_PROVIDER_LOCATION; +import static org.apache.nifi.util.NiFiProperties.FLOWFILE_REPOSITORY_ENCRYPTION_KEY_PROVIDER_IMPLEMENTATION_CLASS; +import static org.apache.nifi.util.NiFiProperties.PROVENANCE_REPO_ENCRYPTION_KEY_PROVIDER_LOCATION; +import static org.apache.nifi.util.NiFiProperties.PROVENANCE_REPO_ENCRYPTION_KEY_PROVIDER_IMPLEMENTATION_CLASS; +import static org.apache.nifi.util.NiFiProperties.REPOSITORY_ENCRYPTION_KEY_PROVIDER_KEYSTORE_LOCATION; +import static org.apache.nifi.util.NiFiProperties.REPOSITORY_ENCRYPTION_KEY_PROVIDER_KEYSTORE_PASSWORD; + +/** + * Standard implementation of Repository Key Provider Factory supporting shared and fallback properties + */ +public class StandardRepositoryKeyProviderFactory implements RepositoryKeyProviderFactory { + private static final Logger logger = LoggerFactory.getLogger(StandardRepositoryKeyProviderFactory.class); + + private static final String ROOT_KEY_ALGORITHM = "AES"; + + private static final Map<EncryptedRepositoryType, String> REPOSITORY_KEY_PROVIDER_CLASS_PROPERTIES = new HashMap<>(); + + private static final Map<EncryptedRepositoryType, String> REPOSITORY_KEY_PROVIDER_LOCATION_PROPERTIES = new HashMap<>(); + + private static final Map<EncryptedRepositoryType, String> REPOSITORY_KEY_PROVIDER_PASSWORD_PROPERTIES = new HashMap<>(); + + static { + REPOSITORY_KEY_PROVIDER_CLASS_PROPERTIES.put(EncryptedRepositoryType.CONTENT, CONTENT_REPOSITORY_ENCRYPTION_KEY_PROVIDER_IMPLEMENTATION_CLASS); + REPOSITORY_KEY_PROVIDER_CLASS_PROPERTIES.put(EncryptedRepositoryType.FLOW_FILE, FLOWFILE_REPOSITORY_ENCRYPTION_KEY_PROVIDER_IMPLEMENTATION_CLASS); + REPOSITORY_KEY_PROVIDER_CLASS_PROPERTIES.put(EncryptedRepositoryType.PROVENANCE, PROVENANCE_REPO_ENCRYPTION_KEY_PROVIDER_IMPLEMENTATION_CLASS); + + REPOSITORY_KEY_PROVIDER_LOCATION_PROPERTIES.put(EncryptedRepositoryType.CONTENT, CONTENT_REPOSITORY_ENCRYPTION_KEY_PROVIDER_LOCATION); + REPOSITORY_KEY_PROVIDER_LOCATION_PROPERTIES.put(EncryptedRepositoryType.FLOW_FILE, FLOWFILE_REPOSITORY_ENCRYPTION_KEY_PROVIDER_LOCATION); + REPOSITORY_KEY_PROVIDER_LOCATION_PROPERTIES.put(EncryptedRepositoryType.PROVENANCE, PROVENANCE_REPO_ENCRYPTION_KEY_PROVIDER_LOCATION); + + REPOSITORY_KEY_PROVIDER_PASSWORD_PROPERTIES.put(EncryptedRepositoryType.CONTENT, CONTENT_REPOSITORY_ENCRYPTION_KEY_PROVIDER_PASSWORD); + REPOSITORY_KEY_PROVIDER_PASSWORD_PROPERTIES.put(EncryptedRepositoryType.FLOW_FILE, FLOWFILE_REPOSITORY_ENCRYPTION_KEY_PROVIDER_PASSWORD); + REPOSITORY_KEY_PROVIDER_PASSWORD_PROPERTIES.put(EncryptedRepositoryType.PROVENANCE, PROVENANCE_REPO_ENCRYPTION_KEY_PROVIDER_PASSWORD); + } + + /** + * Get Key Provider for specified Encrypted Repository Type using shared and fallback NiFi Properties + * + * @param encryptedRepositoryType Encrypted Repository Type + * @param niFiProperties NiFi Properties + * @return Key Provider configured using applicable properties + */ + @Override + public KeyProvider getKeyProvider(final EncryptedRepositoryType encryptedRepositoryType, final NiFiProperties niFiProperties) { + Objects.requireNonNull(encryptedRepositoryType, "Encrypted Repository Type required"); + Objects.requireNonNull(niFiProperties, "NiFi Properties required"); + final EncryptionKeyProvider encryptionKeyProvider = getEncryptionKeyProvider(encryptedRepositoryType, niFiProperties); + final KeyProviderConfiguration<?> keyProviderConfiguration = getKeyProviderConfiguration(encryptedRepositoryType, encryptionKeyProvider, niFiProperties); + return KeyProviderFactory.getKeyProvider(keyProviderConfiguration); + } + + private EncryptionKeyProvider getEncryptionKeyProvider(final EncryptedRepositoryType encryptedRepositoryType, final NiFiProperties niFiProperties) { + EncryptionKeyProvider encryptionKeyProvider = null; + final String sharedKeyProvider = niFiProperties.getProperty(REPOSITORY_ENCRYPTION_KEY_PROVIDER); + + if (StringUtils.isBlank(sharedKeyProvider)) { + logger.debug("Key Provider Property [{}] not configured", REPOSITORY_ENCRYPTION_KEY_PROVIDER); + + final String classProperty = REPOSITORY_KEY_PROVIDER_CLASS_PROPERTIES.get(encryptedRepositoryType); + final String implementationClass = niFiProperties.getProperty(classProperty); + if (StringUtils.isBlank(implementationClass)) { + final String message = String.format("Key Provider Property [%s] not configured", classProperty); + throw new EncryptedConfigurationException(message); + } else { + encryptionKeyProvider = getEncryptionKeyProvider(implementationClass); + } + } else { + for (final EncryptionKeyProvider currentEncryptKeyProvider : EncryptionKeyProvider.values()) { + if (currentEncryptKeyProvider.toString().equals(sharedKeyProvider)) { + encryptionKeyProvider = currentEncryptKeyProvider; + } + } + } + + if (encryptionKeyProvider == null) { + final String message = String.format("Key Provider [%s] not found for Repository Type [%s] ", sharedKeyProvider, encryptedRepositoryType); + throw new EncryptedConfigurationException(message); + } + + return encryptionKeyProvider; + } + + private EncryptionKeyProvider getEncryptionKeyProvider(final String implementationClass) { + EncryptionKeyProvider encryptionKeyProvider; + + if (implementationClass.endsWith(FileBasedKeyProvider.class.getSimpleName())) { + encryptionKeyProvider = EncryptionKeyProvider.FILE_PROPERTIES; + } else if (implementationClass.endsWith(KeyStoreKeyProvider.class.getSimpleName())) { + encryptionKeyProvider = EncryptionKeyProvider.KEYSTORE; + } else if (implementationClass.endsWith(StaticKeyProvider.class.getSimpleName())) { + encryptionKeyProvider = EncryptionKeyProvider.NIFI_PROPERTIES; + } else { + final String message = String.format("Key Provider Class [%s] not supported", implementationClass); + throw new IllegalArgumentException(message); + } + + return encryptionKeyProvider; + } + + private Map<String, String> getEncryptionKeys(final EncryptedRepositoryType encryptedRepositoryType, final NiFiProperties niFiProperties) { + switch (encryptedRepositoryType) { + case CONTENT: + return niFiProperties.getContentRepositoryEncryptionKeys(); + case FLOW_FILE: + return niFiProperties.getFlowFileRepoEncryptionKeys(); + case PROVENANCE: + return niFiProperties.getProvenanceRepoEncryptionKeys(); + default: + throw new IllegalArgumentException(String.format("Repository Type [%s] not supported", encryptedRepositoryType)); + } + } + + private KeyProviderConfiguration<?> getKeyProviderConfiguration(final EncryptedRepositoryType encryptedRepositoryType, + final EncryptionKeyProvider encryptionKeyProvider, + final NiFiProperties niFiProperties) { + if (EncryptionKeyProvider.NIFI_PROPERTIES == encryptionKeyProvider) { Review comment: After further evaluation, `NiFiProperties` has a method named `getRepositoryEncryptionKeys()` that takes the repository type as a parameter, so that simplifies part of the configuration process. -- This is an automated message from the Apache Git Service. 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