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jeremybenn |
/* DiffieHellman.java -- Diffie-Hellman key exchange.
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.net.ssl.provider;
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import java.math.BigInteger;
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import java.security.AccessController;
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import gnu.java.security.action.GetSecurityPropertyAction;
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import gnu.javax.crypto.key.dh.GnuDHPrivateKey;
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/**
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* <p>Simple implementation of two-party Diffie-Hellman key agreement.</p>
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*
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* <p>The primes used in this class are from the following documents:</p>
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*
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* <ul>
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* <li>D. Harkins and D. Carrel, "The Internet Key Exchange (IKE)", <a
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* href="http://www.ietf.org/rfc/rfc2409.txt">RFC 2409</a>.</li>
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* <li>T. Kivinen and M. Kojo, "More Modular
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* Exponential (MODP) Diffie-Hellman groups for Internet Key Exchange
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* (IKE)", <a href="http://www.ietf.org/rfc/rfc3526.txt">RFC
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* 3526</a>.</li>
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* </li>
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*
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* <p>The generator for all these primes is 2.</p>
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*/
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final class DiffieHellman
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{
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// Class method.
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// -------------------------------------------------------------------------
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/**
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* Get the system's Diffie-Hellman parameters, in which <i>g</i> is 2
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* and <i>p</i> is determined by the property
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* <code>"jessie.keypool.dh.group"</code>. The default value for <i>p</i>
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* is 18, corresponding to {@link #GROUP_18}.
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*/
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static GnuDHPrivateKey getParams()
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{
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BigInteger p = DiffieHellman.GROUP_5;
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String group = AccessController.doPrivileged
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(new GetSecurityPropertyAction("jessie.key.dh.group"));
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if (group != null)
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{
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group = group.trim();
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if (group.equals("1"))
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p = DiffieHellman.GROUP_1;
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else if (group.equals("2"))
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p = DiffieHellman.GROUP_2;
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else if (group.equals("5"))
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p = DiffieHellman.GROUP_5;
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else if (group.equals("14"))
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p = DiffieHellman.GROUP_14;
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else if (group.equals("15"))
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p = DiffieHellman.GROUP_15;
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else if (group.equals("16"))
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p = DiffieHellman.GROUP_16;
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else if (group.equals("17"))
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p = DiffieHellman.GROUP_17;
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else if (group.equals("18"))
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p = DiffieHellman.GROUP_18;
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}
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return new GnuDHPrivateKey(null, p, DH_G, null);
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}
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// Constants.
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// -------------------------------------------------------------------------
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/**
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* The generator for all Diffie Hellman groups below.
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*/
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static final BigInteger DH_G = BigInteger.valueOf(2L);
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/**
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* p = 2^768 - 2 ^704 - 1 + 2^64 * { [2^638 pi] + 149686 }
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*/
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static final BigInteger GROUP_1 = new BigInteger("00" +
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
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"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
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"E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFFF", 16);
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/**
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* p = 2^1024 - 2^960 - 1 + 2^64 * { [2^894 pi] + 129093 }
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*/
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static final BigInteger GROUP_2 = new BigInteger("00" +
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
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"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
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"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
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"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" +
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"FFFFFFFFFFFFFFFF", 16);
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/**
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* This prime p = 2^1536 - 2^1472 - 1 + 2^64 * { [2^1406 pi] + 741804 }.
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*/
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static final BigInteger GROUP_5 = new BigInteger("00" +
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
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"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
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"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
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"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
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"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
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"83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
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"670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF", 16);
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/**
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* p = 2^2048 - 2^1984 - 1 + 2^64 * { [2^1918 pi] + 124476 }.
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*/
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static final BigInteger GROUP_14 = new BigInteger("00" +
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
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"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
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"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
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"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
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"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
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"83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
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"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
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"E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
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"DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
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"15728E5A8AACAA68FFFFFFFFFFFFFFFF", 16);
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/**
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* p = 2^3072 - 2^3008 - 1 + 2^64 * { [2^2942 pi] + 1690314 }.
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*/
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static final BigInteger GROUP_15 = new BigInteger("00" +
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
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166 |
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"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
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167 |
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"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
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168 |
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"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
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169 |
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"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
|
170 |
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"83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
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171 |
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"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
|
172 |
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"E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
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173 |
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"DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
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174 |
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"15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" +
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175 |
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"ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" +
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176 |
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"ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" +
|
177 |
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"F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
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178 |
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"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" +
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"43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF", 16);
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180 |
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/**
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* p = 2^4096 - 2^4032 - 1 + 2^64 * { [2^3966 pi] + 240904 }.
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*/
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static final BigInteger GROUP_16 = new BigInteger("00" +
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
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187 |
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"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
|
188 |
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"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
|
189 |
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"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
|
190 |
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"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
|
191 |
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"83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
192 |
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"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
|
193 |
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"E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
|
194 |
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"DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
|
195 |
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"15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" +
|
196 |
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"ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" +
|
197 |
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"ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" +
|
198 |
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"F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
199 |
|
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"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" +
|
200 |
|
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"43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7" +
|
201 |
|
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"88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA" +
|
202 |
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"2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6" +
|
203 |
|
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"287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED" +
|
204 |
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"1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9" +
|
205 |
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"93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199" +
|
206 |
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"FFFFFFFFFFFFFFFF", 16);
|
207 |
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|
208 |
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static final BigInteger GROUP_17 = new BigInteger("00" +
|
209 |
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" +
|
210 |
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"8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" +
|
211 |
|
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"302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" +
|
212 |
|
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"A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" +
|
213 |
|
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"49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" +
|
214 |
|
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"FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
215 |
|
|
"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" +
|
216 |
|
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"180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" +
|
217 |
|
|
"3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" +
|
218 |
|
|
"04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" +
|
219 |
|
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"B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" +
|
220 |
|
|
"1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
221 |
|
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"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" +
|
222 |
|
|
"E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26" +
|
223 |
|
|
"99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB" +
|
224 |
|
|
"04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2" +
|
225 |
|
|
"233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127" +
|
226 |
|
|
"D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" +
|
227 |
|
|
"36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BDF8FF9406" +
|
228 |
|
|
"AD9E530EE5DB382F413001AEB06A53ED9027D831179727B0865A8918" +
|
229 |
|
|
"DA3EDBEBCF9B14ED44CE6CBACED4BB1BDB7F1447E6CC254B33205151" +
|
230 |
|
|
"2BD7AF426FB8F401378CD2BF5983CA01C64B92ECF032EA15D1721D03" +
|
231 |
|
|
"F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E59E7C97F" +
|
232 |
|
|
"BEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" +
|
233 |
|
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"CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58B" +
|
234 |
|
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"B7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632" +
|
235 |
|
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"387FE8D76E3C0468043E8F663F4860EE12BF2D5B0B7474D6E694F91E" +
|
236 |
|
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"6DCC4024FFFFFFFFFFFFFFFF", 16);
|
237 |
|
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|
238 |
|
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/**
|
239 |
|
|
* p = 2^8192 - 2^8128 - 1 + 2^64 * { [2^8062 pi] + 4743158 }.
|
240 |
|
|
*
|
241 |
|
|
* <p>This value, while quite large, is estimated to provide the equivalent
|
242 |
|
|
* cryptographic strength of a symmetric key between 190 and 320 bits.
|
243 |
|
|
*/
|
244 |
|
|
static final BigInteger GROUP_18 = new BigInteger("00" +
|
245 |
|
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"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
|
246 |
|
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"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
|
247 |
|
|
"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
|
248 |
|
|
"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
|
249 |
|
|
"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
|
250 |
|
|
"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
|
251 |
|
|
"83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
252 |
|
|
"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
|
253 |
|
|
"E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
|
254 |
|
|
"DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
|
255 |
|
|
"15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" +
|
256 |
|
|
"ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" +
|
257 |
|
|
"ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" +
|
258 |
|
|
"F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
259 |
|
|
"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" +
|
260 |
|
|
"43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7" +
|
261 |
|
|
"88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA" +
|
262 |
|
|
"2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6" +
|
263 |
|
|
"287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED" +
|
264 |
|
|
"1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9" +
|
265 |
|
|
"93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" +
|
266 |
|
|
"36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BD" +
|
267 |
|
|
"F8FF9406AD9E530EE5DB382F413001AEB06A53ED9027D831" +
|
268 |
|
|
"179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B" +
|
269 |
|
|
"DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF" +
|
270 |
|
|
"5983CA01C64B92ECF032EA15D1721D03F482D7CE6E74FEF6" +
|
271 |
|
|
"D55E702F46980C82B5A84031900B1C9E59E7C97FBEC7E8F3" +
|
272 |
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|
"23A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" +
|
273 |
|
|
"CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE328" +
|
274 |
|
|
"06A1D58BB7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55C" +
|
275 |
|
|
"DA56C9EC2EF29632387FE8D76E3C0468043E8F663F4860EE" +
|
276 |
|
|
"12BF2D5B0B7474D6E694F91E6DBE115974A3926F12FEE5E4" +
|
277 |
|
|
"38777CB6A932DF8CD8BEC4D073B931BA3BC832B68D9DD300" +
|
278 |
|
|
"741FA7BF8AFC47ED2576F6936BA424663AAB639C5AE4F568" +
|
279 |
|
|
"3423B4742BF1C978238F16CBE39D652DE3FDB8BEFC848AD9" +
|
280 |
|
|
"22222E04A4037C0713EB57A81A23F0C73473FC646CEA306B" +
|
281 |
|
|
"4BCBC8862F8385DDFA9D4B7FA2C087E879683303ED5BDD3A" +
|
282 |
|
|
"062B3CF5B3A278A66D2A13F83F44F82DDF310EE074AB6A36" +
|
283 |
|
|
"4597E899A0255DC164F31CC50846851DF9AB48195DED7EA1" +
|
284 |
|
|
"B1D510BD7EE74D73FAF36BC31ECFA268359046F4EB879F92" +
|
285 |
|
|
"4009438B481C6CD7889A002ED5EE382BC9190DA6FC026E47" +
|
286 |
|
|
"9558E4475677E9AA9E3050E2765694DFC81F56E880B96E71" +
|
287 |
|
|
"60C980DD98EDD3DFFFFFFFFFFFFFFFFF", 16);
|
288 |
|
|
|
289 |
|
|
}
|