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/*
* 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.kafka.common.config;
import org.apache.kafka.common.config.ConfigDef.Type;
import org.apache.kafka.common.config.internals.BrokerSecurityConfigs;
import org.apache.kafka.common.utils.Java;
import org.apache.kafka.common.utils.Utils;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.TrustManagerFactory;
import java.util.Set;
public class SslConfigs {
/*
* NOTE: DO NOT CHANGE EITHER CONFIG NAMES AS THESE ARE PART OF THE PUBLIC API AND CHANGE WILL BREAK USER CODE.
*/
public static final String SSL_PROTOCOL_CONFIG = "ssl.protocol";
public static final String SSL_PROTOCOL_DOC = "The SSL protocol used to generate the SSLContext. "
+ "The default is 'TLSv1.3' when running with Java 11 or newer, 'TLSv1.2' otherwise. "
+ "This value should be fine for most use cases. "
+ "Allowed values in recent JVMs are 'TLSv1.2' and 'TLSv1.3'. 'TLS', 'TLSv1.1', 'SSL', 'SSLv2' and 'SSLv3' "
+ "may be supported in older JVMs, but their usage is discouraged due to known security vulnerabilities. "
+ "With the default value for this config and 'ssl.enabled.protocols', clients will downgrade to 'TLSv1.2' if "
+ "the server does not support 'TLSv1.3'. If this config is set to 'TLSv1.2', clients will not use 'TLSv1.3' even "
+ "if it is one of the values in ssl.enabled.protocols and the server only supports 'TLSv1.3'.";
public static final String DEFAULT_SSL_PROTOCOL;
public static final String SSL_PROVIDER_CONFIG = "ssl.provider";
public static final String SSL_PROVIDER_DOC = "The name of the security provider used for SSL connections. Default value is the default security provider of the JVM.";
public static final String SSL_CIPHER_SUITES_CONFIG = "ssl.cipher.suites";
public static final String SSL_CIPHER_SUITES_DOC = "A list of cipher suites. This is a named combination of authentication, encryption, MAC and key exchange algorithm used to negotiate the security settings for a network connection using TLS or SSL network protocol. "
+ "By default all the available cipher suites are supported.";
public static final String SSL_ENABLED_PROTOCOLS_CONFIG = "ssl.enabled.protocols";
public static final String SSL_ENABLED_PROTOCOLS_DOC = "The list of protocols enabled for SSL connections. "
+ "The default is 'TLSv1.2,TLSv1.3' when running with Java 11 or newer, 'TLSv1.2' otherwise. With the "
+ "default value for Java 11, clients and servers will prefer TLSv1.3 if both support it and fallback "
+ "to TLSv1.2 otherwise (assuming both support at least TLSv1.2). This default should be fine for most "
+ "cases. Also see the config documentation for `ssl.protocol`.";
public static final String DEFAULT_SSL_ENABLED_PROTOCOLS;
static {
if (Java.IS_JAVA11_COMPATIBLE) {
DEFAULT_SSL_PROTOCOL = "TLSv1.3";
DEFAULT_SSL_ENABLED_PROTOCOLS = "TLSv1.2,TLSv1.3";
} else {
DEFAULT_SSL_PROTOCOL = "TLSv1.2";
DEFAULT_SSL_ENABLED_PROTOCOLS = "TLSv1.2";
}
}
public static final String SSL_KEYSTORE_TYPE_CONFIG = "ssl.keystore.type";
public static final String SSL_KEYSTORE_TYPE_DOC = "The file format of the key store file. "
+ "This is optional for client. The values currently supported by the default `ssl.engine.factory.class` are [JKS, PKCS12, PEM].";
public static final String DEFAULT_SSL_KEYSTORE_TYPE = "JKS";
public static final String SSL_KEYSTORE_KEY_CONFIG = "ssl.keystore.key";
public static final String SSL_KEYSTORE_KEY_DOC = "Private key in the format specified by 'ssl.keystore.type'. "
+ "Default SSL engine factory supports only PEM format with PKCS#8 keys. If the key is encrypted, "
+ "key password must be specified using 'ssl.key.password'";
public static final String SSL_KEYSTORE_CERTIFICATE_CHAIN_CONFIG = "ssl.keystore.certificate.chain";
public static final String SSL_KEYSTORE_CERTIFICATE_CHAIN_DOC = "Certificate chain in the format specified by 'ssl.keystore.type'. "
+ "Default SSL engine factory supports only PEM format with a list of X.509 certificates";
public static final String SSL_TRUSTSTORE_CERTIFICATES_CONFIG = "ssl.truststore.certificates";
public static final String SSL_TRUSTSTORE_CERTIFICATES_DOC = "Trusted certificates in the format specified by 'ssl.truststore.type'. "
+ "Default SSL engine factory supports only PEM format with X.509 certificates.";
public static final String SSL_KEYSTORE_LOCATION_CONFIG = "ssl.keystore.location";
public static final String SSL_KEYSTORE_LOCATION_DOC = "The location of the key store file. "
+ "This is optional for client and can be used for two-way authentication for client.";
public static final String SSL_KEYSTORE_PASSWORD_CONFIG = "ssl.keystore.password";
public static final String SSL_KEYSTORE_PASSWORD_DOC = "The store password for the key store file. "
+ "This is optional for client and only needed if 'ssl.keystore.location' is configured. "
+ "Key store password is not supported for PEM format.";
public static final String SSL_KEY_PASSWORD_CONFIG = "ssl.key.password";
public static final String SSL_KEY_PASSWORD_DOC = "The password of the private key in the key store file or "
+ "the PEM key specified in 'ssl.keystore.key'.";
public static final String SSL_TRUSTSTORE_TYPE_CONFIG = "ssl.truststore.type";
public static final String SSL_TRUSTSTORE_TYPE_DOC = "The file format of the trust store file. The values currently supported by the default `ssl.engine.factory.class` are [JKS, PKCS12, PEM].";
public static final String DEFAULT_SSL_TRUSTSTORE_TYPE = "JKS";
public static final String SSL_TRUSTSTORE_LOCATION_CONFIG = "ssl.truststore.location";
public static final String SSL_TRUSTSTORE_LOCATION_DOC = "The location of the trust store file.";
public static final String SSL_TRUSTSTORE_PASSWORD_CONFIG = "ssl.truststore.password";
public static final String SSL_TRUSTSTORE_PASSWORD_DOC = "The password for the trust store file. "
+ "If a password is not set, trust store file configured will still be used, but integrity checking is disabled. "
+ "Trust store password is not supported for PEM format.";
public static final String SSL_KEYMANAGER_ALGORITHM_CONFIG = "ssl.keymanager.algorithm";
public static final String SSL_KEYMANAGER_ALGORITHM_DOC = "The algorithm used by key manager factory for SSL connections. "
+ "Default value is the key manager factory algorithm configured for the Java Virtual Machine.";
public static final String DEFAULT_SSL_KEYMANGER_ALGORITHM = KeyManagerFactory.getDefaultAlgorithm();
public static final String SSL_TRUSTMANAGER_ALGORITHM_CONFIG = "ssl.trustmanager.algorithm";
public static final String SSL_TRUSTMANAGER_ALGORITHM_DOC = "The algorithm used by trust manager factory for SSL connections. "
+ "Default value is the trust manager factory algorithm configured for the Java Virtual Machine.";
public static final String DEFAULT_SSL_TRUSTMANAGER_ALGORITHM = TrustManagerFactory.getDefaultAlgorithm();
public static final String SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_CONFIG = "ssl.endpoint.identification.algorithm";
public static final String SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_DOC = "The endpoint identification algorithm to validate server hostname using server certificate. ";
public static final String DEFAULT_SSL_ENDPOINT_IDENTIFICATION_ALGORITHM = "https";
public static final String SSL_SECURE_RANDOM_IMPLEMENTATION_CONFIG = "ssl.secure.random.implementation";
public static final String SSL_SECURE_RANDOM_IMPLEMENTATION_DOC = "The SecureRandom PRNG implementation to use for SSL cryptography operations. ";
public static final String SSL_ENGINE_FACTORY_CLASS_CONFIG = "ssl.engine.factory.class";
public static final String SSL_ENGINE_FACTORY_CLASS_DOC = "The class of type org.apache.kafka.common.security.auth.SslEngineFactory to provide SSLEngine objects. Default value is org.apache.kafka.common.security.ssl.DefaultSslEngineFactory";
public static void addClientSslSupport(ConfigDef config) {
config.define(SslConfigs.SSL_PROTOCOL_CONFIG, ConfigDef.Type.STRING, SslConfigs.DEFAULT_SSL_PROTOCOL, ConfigDef.Importance.MEDIUM, SslConfigs.SSL_PROTOCOL_DOC)
.define(SslConfigs.SSL_PROVIDER_CONFIG, ConfigDef.Type.STRING, null, ConfigDef.Importance.MEDIUM, SslConfigs.SSL_PROVIDER_DOC)
.define(SslConfigs.SSL_CIPHER_SUITES_CONFIG, ConfigDef.Type.LIST, null, ConfigDef.Importance.LOW, SslConfigs.SSL_CIPHER_SUITES_DOC)
.define(SslConfigs.SSL_ENABLED_PROTOCOLS_CONFIG, ConfigDef.Type.LIST, SslConfigs.DEFAULT_SSL_ENABLED_PROTOCOLS, ConfigDef.Importance.MEDIUM, SslConfigs.SSL_ENABLED_PROTOCOLS_DOC)
.define(SslConfigs.SSL_KEYSTORE_TYPE_CONFIG, ConfigDef.Type.STRING, SslConfigs.DEFAULT_SSL_KEYSTORE_TYPE, ConfigDef.Importance.MEDIUM, SslConfigs.SSL_KEYSTORE_TYPE_DOC)
.define(SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG, ConfigDef.Type.STRING, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_KEYSTORE_LOCATION_DOC)
.define(SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG, ConfigDef.Type.PASSWORD, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_KEYSTORE_PASSWORD_DOC)
.define(SslConfigs.SSL_KEY_PASSWORD_CONFIG, ConfigDef.Type.PASSWORD, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_KEY_PASSWORD_DOC)
.define(SslConfigs.SSL_KEYSTORE_KEY_CONFIG, Type.PASSWORD, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_KEYSTORE_KEY_DOC)
.define(SslConfigs.SSL_KEYSTORE_CERTIFICATE_CHAIN_CONFIG, ConfigDef.Type.PASSWORD, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_KEYSTORE_CERTIFICATE_CHAIN_DOC)
.define(SslConfigs.SSL_TRUSTSTORE_CERTIFICATES_CONFIG, ConfigDef.Type.PASSWORD, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_TRUSTSTORE_CERTIFICATES_DOC)
.define(SslConfigs.SSL_TRUSTSTORE_TYPE_CONFIG, ConfigDef.Type.STRING, SslConfigs.DEFAULT_SSL_TRUSTSTORE_TYPE, ConfigDef.Importance.MEDIUM, SslConfigs.SSL_TRUSTSTORE_TYPE_DOC)
.define(SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG, ConfigDef.Type.STRING, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_TRUSTSTORE_LOCATION_DOC)
.define(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG, ConfigDef.Type.PASSWORD, null, ConfigDef.Importance.HIGH, SslConfigs.SSL_TRUSTSTORE_PASSWORD_DOC)
.define(SslConfigs.SSL_KEYMANAGER_ALGORITHM_CONFIG, ConfigDef.Type.STRING, SslConfigs.DEFAULT_SSL_KEYMANGER_ALGORITHM, ConfigDef.Importance.LOW, SslConfigs.SSL_KEYMANAGER_ALGORITHM_DOC)
.define(SslConfigs.SSL_TRUSTMANAGER_ALGORITHM_CONFIG, ConfigDef.Type.STRING, SslConfigs.DEFAULT_SSL_TRUSTMANAGER_ALGORITHM, ConfigDef.Importance.LOW, SslConfigs.SSL_TRUSTMANAGER_ALGORITHM_DOC)
.define(SslConfigs.SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_CONFIG, ConfigDef.Type.STRING, SslConfigs.DEFAULT_SSL_ENDPOINT_IDENTIFICATION_ALGORITHM, ConfigDef.Importance.LOW, SslConfigs.SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_DOC)
.define(SslConfigs.SSL_SECURE_RANDOM_IMPLEMENTATION_CONFIG, ConfigDef.Type.STRING, null, ConfigDef.Importance.LOW, SslConfigs.SSL_SECURE_RANDOM_IMPLEMENTATION_DOC)
.define(SslConfigs.SSL_ENGINE_FACTORY_CLASS_CONFIG, ConfigDef.Type.CLASS, null, ConfigDef.Importance.LOW, SslConfigs.SSL_ENGINE_FACTORY_CLASS_DOC);
}
public static final Set RECONFIGURABLE_CONFIGS = Utils.mkSet(
SslConfigs.SSL_KEYSTORE_TYPE_CONFIG,
SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG,
SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG,
SslConfigs.SSL_KEY_PASSWORD_CONFIG,
SslConfigs.SSL_TRUSTSTORE_TYPE_CONFIG,
SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG,
SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG,
SslConfigs.SSL_KEYSTORE_CERTIFICATE_CHAIN_CONFIG,
SslConfigs.SSL_KEYSTORE_KEY_CONFIG,
SslConfigs.SSL_TRUSTSTORE_CERTIFICATES_CONFIG);
public static final Set NON_RECONFIGURABLE_CONFIGS = Utils.mkSet(
BrokerSecurityConfigs.SSL_CLIENT_AUTH_CONFIG,
SslConfigs.SSL_PROTOCOL_CONFIG,
SslConfigs.SSL_PROVIDER_CONFIG,
SslConfigs.SSL_CIPHER_SUITES_CONFIG,
SslConfigs.SSL_ENABLED_PROTOCOLS_CONFIG,
SslConfigs.SSL_KEYMANAGER_ALGORITHM_CONFIG,
SslConfigs.SSL_TRUSTMANAGER_ALGORITHM_CONFIG,
SslConfigs.SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_CONFIG,
SslConfigs.SSL_SECURE_RANDOM_IMPLEMENTATION_CONFIG,
SslConfigs.SSL_ENGINE_FACTORY_CLASS_CONFIG);
}
