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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security.tls;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLParameters;
import java.util.Set;
/**
* A simplified version of {@link SSLContext} modelled as an interface.
*
* @author bjorncs
*/
public interface TlsContext extends AutoCloseable {
/**
* Handpicked subset of supported ciphers from https://www.openssl.org/docs/manmaster/man1/ciphers.html
* based on Modern spec from https://wiki.mozilla.org/Security/Server_Side_TLS
* For TLSv1.2 we only allow RSA and ECDSA with ephemeral key exchange and GCM.
* For TLSv1.3 we allow the DEFAULT group ciphers.
* Note that we _only_ allow AEAD ciphers for either TLS version.
*/
// TODO: Remove TLS_CHACHA20_POLY1305_SHA256, TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
// TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 and TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256?
// These cipher suites are not supported in Java 11, see https://github.com/AdoptOpenJDK/openjdk-jdk11/blob/master/src/java.base/share/classes/sun/security/ssl/CipherSuite.java
Set<String> ALLOWED_CIPHER_SUITES = Set.of(
"TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
"TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
"TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
"TLS_AES_128_GCM_SHA256", // TLSv1.3
"TLS_AES_256_GCM_SHA384", // TLSv1.3
"TLS_CHACHA20_POLY1305_SHA256"); // TLSv1.3
Set<String> ALLOWED_PROTOCOLS = Set.of("TLSv1.2"); // TODO Enable TLSv1.3
SSLContext context();
SSLParameters parameters();
SSLEngine createSslEngine();
SSLEngine createSslEngine(String peerHost, int peerPort);
@Override default void close() {}
}
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