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278 lines
9.1 KiB
Java
278 lines
9.1 KiB
Java
/*
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* Copyright (c) 2015, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.ssl;
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import java.util.HashSet;
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import java.util.Set;
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import sun.security.ssl.CipherSuite.HashAlg;
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import sun.security.ssl.CipherSuite.KeyExchange;
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import sun.security.ssl.CipherSuite.MacAlg;
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import sun.security.util.AlgorithmDecomposer;
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/**
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* The class decomposes standard SSL/TLS cipher suites into sub-elements.
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*/
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class SSLAlgorithmDecomposer extends AlgorithmDecomposer {
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// indicates that only certification path algorithms need to be used
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private final boolean onlyX509;
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SSLAlgorithmDecomposer(boolean onlyX509) {
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this.onlyX509 = onlyX509;
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}
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SSLAlgorithmDecomposer() {
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this(false);
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}
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private Set<String> decomposes(CipherSuite.KeyExchange keyExchange) {
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Set<String> components = new HashSet<>();
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switch (keyExchange) {
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case K_NULL:
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if (!onlyX509) {
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components.add("K_NULL");
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}
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break;
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case K_RSA:
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components.add("RSA");
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break;
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case K_RSA_EXPORT:
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components.add("RSA");
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components.add("RSA_EXPORT");
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break;
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case K_DH_RSA:
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components.add("RSA");
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components.add("DH");
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components.add("DiffieHellman");
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components.add("DH_RSA");
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break;
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case K_DH_DSS:
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components.add("DSA");
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components.add("DSS");
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components.add("DH");
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components.add("DiffieHellman");
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components.add("DH_DSS");
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break;
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case K_DHE_DSS:
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components.add("DSA");
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components.add("DSS");
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components.add("DH");
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components.add("DHE");
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components.add("DiffieHellman");
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components.add("DHE_DSS");
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break;
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case K_DHE_RSA:
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components.add("RSA");
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components.add("DH");
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components.add("DHE");
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components.add("DiffieHellman");
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components.add("DHE_RSA");
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break;
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case K_DH_ANON:
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if (!onlyX509) {
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components.add("ANON");
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components.add("DH");
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components.add("DiffieHellman");
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components.add("DH_ANON");
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}
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break;
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case K_ECDH_ECDSA:
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components.add("ECDH");
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components.add("ECDSA");
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components.add("ECDH_ECDSA");
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break;
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case K_ECDH_RSA:
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components.add("ECDH");
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components.add("RSA");
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components.add("ECDH_RSA");
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break;
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case K_ECDHE_ECDSA:
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components.add("ECDHE");
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components.add("ECDSA");
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components.add("ECDHE_ECDSA");
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break;
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case K_ECDHE_RSA:
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components.add("ECDHE");
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components.add("RSA");
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components.add("ECDHE_RSA");
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break;
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case K_ECDH_ANON:
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if (!onlyX509) {
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components.add("ECDH");
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components.add("ANON");
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components.add("ECDH_ANON");
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}
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break;
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default:
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// otherwise ignore
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}
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return components;
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}
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private Set<String> decomposes(SSLCipher bulkCipher) {
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Set<String> components = new HashSet<>();
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if (bulkCipher.transformation != null) {
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components.addAll(super.decompose(bulkCipher.transformation));
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}
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switch (bulkCipher) {
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case B_NULL:
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components.add("C_NULL");
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break;
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case B_RC2_40:
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components.add("RC2_CBC_40");
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break;
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case B_RC4_40:
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components.add("RC4_40");
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break;
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case B_RC4_128:
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components.add("RC4_128");
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break;
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case B_DES_40:
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components.add("DES40_CBC");
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components.add("DES_CBC_40");
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break;
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case B_DES:
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components.add("DES_CBC");
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break;
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case B_3DES:
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components.add("3DES_EDE_CBC");
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break;
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case B_AES_128:
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components.add("AES_128_CBC");
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break;
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case B_AES_256:
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components.add("AES_256_CBC");
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break;
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case B_AES_128_GCM:
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components.add("AES_128_GCM");
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break;
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case B_AES_256_GCM:
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components.add("AES_256_GCM");
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break;
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}
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return components;
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}
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private Set<String> decomposes(CipherSuite.MacAlg macAlg,
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SSLCipher cipher) {
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Set<String> components = new HashSet<>();
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if (macAlg == CipherSuite.MacAlg.M_NULL
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&& cipher.cipherType != CipherType.AEAD_CIPHER) {
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components.add("M_NULL");
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} else if (macAlg == CipherSuite.MacAlg.M_MD5) {
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components.add("MD5");
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components.add("HmacMD5");
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} else if (macAlg == CipherSuite.MacAlg.M_SHA) {
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components.add("SHA1");
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components.add("SHA-1");
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components.add("HmacSHA1");
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} else if (macAlg == CipherSuite.MacAlg.M_SHA256) {
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components.add("SHA256");
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components.add("SHA-256");
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components.add("HmacSHA256");
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} else if (macAlg == CipherSuite.MacAlg.M_SHA384) {
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components.add("SHA384");
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components.add("SHA-384");
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components.add("HmacSHA384");
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}
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return components;
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}
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private Set<String> decomposes(CipherSuite.HashAlg hashAlg) {
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Set<String> components = new HashSet<>();
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if (hashAlg == CipherSuite.HashAlg.H_SHA256) {
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components.add("SHA256");
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components.add("SHA-256");
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components.add("HmacSHA256");
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} else if (hashAlg == CipherSuite.HashAlg.H_SHA384) {
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components.add("SHA384");
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components.add("SHA-384");
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components.add("HmacSHA384");
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}
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return components;
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}
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private Set<String> decompose(KeyExchange keyExchange,
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SSLCipher cipher,
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MacAlg macAlg,
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HashAlg hashAlg) {
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Set<String> components = new HashSet<>();
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if (keyExchange != null) {
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components.addAll(decomposes(keyExchange));
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}
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if (onlyX509) {
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// Certification path algorithm constraints do not apply
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// to cipher and macAlg.
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return components;
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}
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if (cipher != null) {
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components.addAll(decomposes(cipher));
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}
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if (macAlg != null) {
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components.addAll(decomposes(macAlg, cipher));
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}
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if (hashAlg != null) {
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components.addAll(decomposes(hashAlg));
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}
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return components;
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}
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@Override
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public Set<String> decompose(String algorithm) {
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if (algorithm.startsWith("SSL_") || algorithm.startsWith("TLS_")) {
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CipherSuite cipherSuite = null;
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try {
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cipherSuite = CipherSuite.nameOf(algorithm);
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} catch (IllegalArgumentException iae) {
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// ignore: unknown or unsupported ciphersuite
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}
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if (cipherSuite != null &&
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cipherSuite != CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV) {
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return decompose(cipherSuite.keyExchange,
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cipherSuite.bulkCipher,
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cipherSuite.macAlg,
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cipherSuite.hashAlg);
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}
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}
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return super.decompose(algorithm);
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}
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}
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