8238560: Cleanup and consolidate algorithms in the jdk.tls.legacyAlgorithms security property

Reviewed-by: xuelei

src/java.base/share/conf/security/java.security

@@ -796,11 +796,7 @@ jdk.tls.disabledAlgorithms=SSLv3, RC4, DES, MD5withRSA, DH keySize < 1024, \
 # Example:
 #   jdk.tls.legacyAlgorithms=DH_anon, DES_CBC, SSL_RSA_WITH_RC4_128_MD5
 #
-jdk.tls.legacyAlgorithms= \
-        K_NULL, C_NULL, M_NULL, \
-        DH_anon, ECDH_anon, \
-        RC4_128, RC4_40, DES_CBC, DES40_CBC, \
-        3DES_EDE_CBC
+jdk.tls.legacyAlgorithms=NULL, anon, RC4, DES, 3DES_EDE_CBC
 
 #
 # The pre-defined default finite field Diffie-Hellman ephemeral (DHE)

test/jdk/sun/security/ssl/CipherSuite/LegacyConstraints.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8238560
+ * @library /javax/net/ssl/templates
+ * @summary Make sure that legacy suites are not selected if stronger choices
+ *          are available
+ * @run main/othervm LegacyConstraints
+ */
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.Security;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.List;
+import javax.net.ssl.SSLSocket;
+
+public class LegacyConstraints extends SSLSocketTemplate {
+
+    // none of the legacy suites are supported in TLS 1.3, so don't
+    // test TLS 1.3
+    private final static List<String> TLS_PROTOCOLS = List.of(
+        "TLSv1", "TLSv1.1", "TLSv1.2");
+
+    // cipher suites that contain legacy algorithms
+    private final static List<String> LEGACY_SUITES = List.of(
+        "TLS_RSA_WITH_NULL_SHA256",
+        "TLS_DH_anon_WITH_AES_128_CBC_SHA",
+        "TLS_ECDH_anon_WITH_AES_128_CBC_SHA",
+        "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA",
+        "TLS_RSA_WITH_DES_CBC_SHA",
+        "TLS_RSA_WITH_3DES_EDE_CBC_SHA");
+
+    private static String protocol;
+
+    public static void main(String[] args) throws Exception {
+        // Clear disabled algorithms so that it doesn't interfere
+        // with legacy suites
+        Security.setProperty("jdk.tls.disabledAlgorithms", "");
+        for (String tlsProtocol : TLS_PROTOCOLS) {
+            protocol = tlsProtocol;
+            System.out.println("Testing " + protocol);
+            new LegacyConstraints().run();
+        }
+    }
+
+    /**
+     * Prepends legacy suites to the array of enabled suites.
+     */
+    private static void configureSocket(SSLSocket socket) {
+        socket.setEnabledProtocols(new String[] {protocol});
+        List<String> newSuites = new ArrayList(LEGACY_SUITES);
+        Arrays.stream(socket.getEnabledCipherSuites())
+                            .forEachOrdered(suite -> newSuites.add(suite));
+        socket.setEnabledCipherSuites(newSuites.toArray(new String[0]));
+    }
+
+    @Override
+    protected void runServerApplication(SSLSocket socket) throws Exception {
+        configureSocket(socket);
+
+        InputStream sslIS = socket.getInputStream();
+        OutputStream sslOS = socket.getOutputStream();
+
+        sslIS.read();
+        sslOS.write(85);
+        sslOS.flush();
+
+        String negotiatedSuite = socket.getSession().getCipherSuite();
+        if (LEGACY_SUITES.contains(negotiatedSuite)) {
+            throw new Exception("Test FAILED: the negotiated suite " +
+                    negotiatedSuite + " is a legacy suite");
+        }
+    }
+
+    @Override
+    protected void runClientApplication(SSLSocket socket) throws Exception {
+        configureSocket(socket);
+
+        InputStream sslIS = socket.getInputStream();
+        OutputStream sslOS = socket.getOutputStream();
+
+        sslOS.write(280);
+        sslOS.flush();
+        sslIS.read();
+    }
+}