1 files changed, 289 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/net/ssl/provider/DiffieHellman.java b/libjava/classpath/gnu/javax/net/ssl/provider/DiffieHellman.java
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+/* DiffieHellman.java -- Diffie-Hellman key exchange.
+   Copyright (C) 2006  Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.net.ssl.provider;
+
+import java.math.BigInteger;
+import java.security.AccessController;
+
+import gnu.java.security.action.GetSecurityPropertyAction;
+import gnu.javax.crypto.key.dh.GnuDHPrivateKey;
+
+/**
+ * <p>Simple implementation of two-party Diffie-Hellman key agreement.</p>
+ *
+ * <p>The primes used in this class are from the following documents:</p>
+ *
+ * <ul>
+ * <li>D. Harkins and D. Carrel, "The Internet Key Exchange (IKE)", <a
+ * href="http://www.ietf.org/rfc/rfc2409.txt">RFC 2409</a>.</li>
+ * <li>T. Kivinen and M. Kojo, "More Modular
+ * Exponential (MODP) Diffie-Hellman groups for Internet Key Exchange
+ * (IKE)", <a href="http://www.ietf.org/rfc/rfc3526.txt">RFC
+ * 3526</a>.</li>
+ * </li>
+ *
+ * <p>The generator for all these primes is 2.</p>
+ */
+final class DiffieHellman
+{
+
+  // Class method.
+  // -------------------------------------------------------------------------
+
+  /**
+   * Get the system's Diffie-Hellman parameters, in which <i>g</i> is 2
+   * and <i>p</i> is determined by the property
+   * <code>"jessie.keypool.dh.group"</code>. The default value for <i>p</i>
+   * is 18, corresponding to {@link #GROUP_18}.
+   */
+  static GnuDHPrivateKey getParams()
+  {
+    BigInteger p = DiffieHellman.GROUP_5;
+    String group = AccessController.doPrivileged
+      (new GetSecurityPropertyAction("jessie.key.dh.group"));
+    if (group != null)
+      {
+        group = group.trim();
+        if (group.equals("1"))
+          p = DiffieHellman.GROUP_1;
+        else if (group.equals("2"))
+          p = DiffieHellman.GROUP_2;
+        else if (group.equals("5"))
+          p = DiffieHellman.GROUP_5;
+        else if (group.equals("14"))
+          p = DiffieHellman.GROUP_14;
+        else if (group.equals("15"))
+          p = DiffieHellman.GROUP_15;
+        else if (group.equals("16"))
+          p = DiffieHellman.GROUP_16;
+        else if (group.equals("17"))
+          p = DiffieHellman.GROUP_17;
+        else if (group.equals("18"))
+          p = DiffieHellman.GROUP_18;
+      }
+    return new GnuDHPrivateKey(null, p, DH_G, null);
+  }
+
+  // Constants.
+  // -------------------------------------------------------------------------
+
+  /**
+   * The generator for all Diffie Hellman groups below.
+   */
+  static final BigInteger DH_G = BigInteger.valueOf(2L);
+
+  /**
+   * p = 2^768 - 2 ^704 - 1 + 2^64 * { [2^638 pi] + 149686 }
+   */
+  static final BigInteger GROUP_1 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFFF", 16);
+
+  /**
+   * p = 2^1024 - 2^960 - 1 + 2^64 * { [2^894 pi] + 129093 }
+   */
+  static final BigInteger GROUP_2 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" +
+    "FFFFFFFFFFFFFFFF", 16);
+
+  /**
+   * This prime p = 2^1536 - 2^1472 - 1 + 2^64 * { [2^1406 pi] + 741804 }.
+   */
+  static final BigInteger GROUP_5 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
+    "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF", 16);
+
+  /**
+   * p = 2^2048 - 2^1984 - 1 + 2^64 * { [2^1918 pi] + 124476 }.
+   */
+  static final BigInteger GROUP_14 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
+    "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
+    "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
+    "15728E5A8AACAA68FFFFFFFFFFFFFFFF", 16);
+
+  /**
+   * p = 2^3072 - 2^3008 - 1 + 2^64 * { [2^2942 pi] + 1690314 }.
+   */
+  static final BigInteger GROUP_15 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
+    "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
+    "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
+    "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" +
+    "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" +
+    "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" +
+    "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
+    "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" +
+    "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF", 16);
+
+  /**
+   * p = 2^4096 - 2^4032 - 1 + 2^64 * { [2^3966 pi] + 240904 }.
+   */
+  static final BigInteger GROUP_16 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
+    "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
+    "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
+    "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" +
+    "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" +
+    "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" +
+    "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
+    "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" +
+    "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7" +
+    "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA" +
+    "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6" +
+    "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED" +
+    "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9" +
+    "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199" +
+    "FFFFFFFFFFFFFFFF", 16);
+
+  static final BigInteger GROUP_17 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" +
+    "8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" +
+    "302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" +
+    "A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" +
+    "49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" +
+    "FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" +
+    "180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" +
+    "3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" +
+    "04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" +
+    "B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" +
+    "1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
+    "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" +
+    "E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26" +
+    "99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB" +
+    "04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2" +
+    "233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127" +
+    "D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" +
+    "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BDF8FF9406" +
+    "AD9E530EE5DB382F413001AEB06A53ED9027D831179727B0865A8918" +
+    "DA3EDBEBCF9B14ED44CE6CBACED4BB1BDB7F1447E6CC254B33205151" +
+    "2BD7AF426FB8F401378CD2BF5983CA01C64B92ECF032EA15D1721D03" +
+    "F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E59E7C97F" +
+    "BEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" +
+    "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58B" +
+    "B7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632" +
+    "387FE8D76E3C0468043E8F663F4860EE12BF2D5B0B7474D6E694F91E" +
+    "6DCC4024FFFFFFFFFFFFFFFF", 16);
+
+  /**
+   * p = 2^8192 - 2^8128 - 1 + 2^64 * { [2^8062 pi] + 4743158 }.
+   *
+   * <p>This value, while quite large, is estimated to provide the equivalent
+   * cryptographic strength of a symmetric key between 190 and 320 bits.
+   */
+  static final BigInteger GROUP_18 = new BigInteger("00" +
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" +
+    "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" +
+    "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" +
+    "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" +
+    "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" +
+    "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" +
+    "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
+    "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" +
+    "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7" +
+    "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA" +
+    "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6" +
+    "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED" +
+    "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9" +
+    "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" +
+    "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BD" +
+    "F8FF9406AD9E530EE5DB382F413001AEB06A53ED9027D831" +
+    "179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B" +
+    "DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF" +
+    "5983CA01C64B92ECF032EA15D1721D03F482D7CE6E74FEF6" +
+    "D55E702F46980C82B5A84031900B1C9E59E7C97FBEC7E8F3" +
+    "23A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" +
+    "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE328" +
+    "06A1D58BB7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55C" +
+    "DA56C9EC2EF29632387FE8D76E3C0468043E8F663F4860EE" +
+    "12BF2D5B0B7474D6E694F91E6DBE115974A3926F12FEE5E4" +
+    "38777CB6A932DF8CD8BEC4D073B931BA3BC832B68D9DD300" +
+    "741FA7BF8AFC47ED2576F6936BA424663AAB639C5AE4F568" +
+    "3423B4742BF1C978238F16CBE39D652DE3FDB8BEFC848AD9" +
+    "22222E04A4037C0713EB57A81A23F0C73473FC646CEA306B" +
+    "4BCBC8862F8385DDFA9D4B7FA2C087E879683303ED5BDD3A" +
+    "062B3CF5B3A278A66D2A13F83F44F82DDF310EE074AB6A36" +
+    "4597E899A0255DC164F31CC50846851DF9AB48195DED7EA1" +
+    "B1D510BD7EE74D73FAF36BC31ECFA268359046F4EB879F92" +
+    "4009438B481C6CD7889A002ED5EE382BC9190DA6FC026E47" +
+    "9558E4475677E9AA9E3050E2765694DFC81F56E880B96E71" +
+    "60C980DD98EDD3DFFFFFFFFFFFFFFFFF", 16);
+
+}