/* |
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* Copyright (c) 2015, 2019, 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 static sun.security.ssl.CipherSuite.KeyExchange.*; |
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import sun.security.ssl.CipherSuite.MacAlg; |
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import static sun.security.ssl.SSLCipher.*; |
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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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} |