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authorDominik Schürmann <dominik@dominikschuermann.de>2014-04-06 12:57:42 +0200
committerDominik Schürmann <dominik@dominikschuermann.de>2014-04-06 12:57:42 +0200
commit6d1137190529dc7add74926cea52c377883319be (patch)
treefd88b29a048f3aec1daa2a84bbaf22c0efa3663f /OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Primes.java
parent17997dd362fe62d72113a0536069d0fdb9c3211b (diff)
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Rename folder structure from OpenPGP Keychain to OpenKeychain
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Primes.java')
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Primes.java188
1 files changed, 188 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Primes.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Primes.java
new file mode 100644
index 000000000..28a12bf37
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Primes.java
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.util;
+
+import java.math.BigInteger;
+
+/**
+ * Primes for ElGamal
+ */
+public final class Primes {
+ // taken from http://www.ietf.org/rfc/rfc3526.txt
+ public static final String P1536 =
+ "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" +
+ "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" +
+ "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" +
+ "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" +
+ "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" +
+ "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" +
+ "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" +
+ "670C354E 4ABC9804 F1746C08 CA237327 FFFFFFFF FFFFFFFF";
+
+ public static final String P2048 =
+ "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" +
+ "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" +
+ "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" +
+ "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" +
+ "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" +
+ "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" +
+ "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" +
+ "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" +
+ "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" +
+ "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" +
+ "15728E5A 8AACAA68 FFFFFFFF FFFFFFFF";
+
+ public static final String P3072 =
+ "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" +
+ "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" +
+ "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" +
+ "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" +
+ "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" +
+ "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" +
+ "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" +
+ "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" +
+ "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" +
+ "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" +
+ "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" +
+ "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" +
+ "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" +
+ "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" +
+ "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" +
+ "43DB5BFC E0FD108E 4B82D120 A93AD2CA FFFFFFFF FFFFFFFF";
+
+ public static final String P4096 =
+ "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" +
+ "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" +
+ "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" +
+ "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" +
+ "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" +
+ "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" +
+ "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" +
+ "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" +
+ "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" +
+ "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" +
+ "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" +
+ "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" +
+ "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" +
+ "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" +
+ "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" +
+ "43DB5BFC E0FD108E 4B82D120 A9210801 1A723C12 A787E6D7" +
+ "88719A10 BDBA5B26 99C32718 6AF4E23C 1A946834 B6150BDA" +
+ "2583E9CA 2AD44CE8 DBBBC2DB 04DE8EF9 2E8EFC14 1FBECAA6" +
+ "287C5947 4E6BC05D 99B2964F A090C3A2 233BA186 515BE7ED" +
+ "1F612970 CEE2D7AF B81BDD76 2170481C D0069127 D5B05AA9" +
+ "93B4EA98 8D8FDDC1 86FFB7DC 90A6C08F 4DF435C9 34063199" +
+ "FFFFFFFF FFFFFFFF";
+
+ public static final String P6144 =
+ "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" +
+ "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" +
+ "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" +
+ "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" +
+ "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" +
+ "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" +
+ "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" +
+ "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" +
+ "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" +
+ "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" +
+ "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" +
+ "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" +
+ "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" +
+ "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" +
+ "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" +
+ "43DB5BFC E0FD108E 4B82D120 A9210801 1A723C12 A787E6D7" +
+ "88719A10 BDBA5B26 99C32718 6AF4E23C 1A946834 B6150BDA" +
+ "2583E9CA 2AD44CE8 DBBBC2DB 04DE8EF9 2E8EFC14 1FBECAA6" +
+ "287C5947 4E6BC05D 99B2964F A090C3A2 233BA186 515BE7ED" +
+ "1F612970 CEE2D7AF B81BDD76 2170481C D0069127 D5B05AA9" +
+ "93B4EA98 8D8FDDC1 86FFB7DC 90A6C08F 4DF435C9 34028492" +
+ "36C3FAB4 D27C7026 C1D4DCB2 602646DE C9751E76 3DBA37BD" +
+ "F8FF9406 AD9E530E E5DB382F 413001AE B06A53ED 9027D831" +
+ "179727B0 865A8918 DA3EDBEB CF9B14ED 44CE6CBA CED4BB1B" +
+ "DB7F1447 E6CC254B 33205151 2BD7AF42 6FB8F401 378CD2BF" +
+ "5983CA01 C64B92EC F032EA15 D1721D03 F482D7CE 6E74FEF6" +
+ "D55E702F 46980C82 B5A84031 900B1C9E 59E7C97F BEC7E8F3" +
+ "23A97A7E 36CC88BE 0F1D45B7 FF585AC5 4BD407B2 2B4154AA" +
+ "CC8F6D7E BF48E1D8 14CC5ED2 0F8037E0 A79715EE F29BE328" +
+ "06A1D58B B7C5DA76 F550AA3D 8A1FBFF0 EB19CCB1 A313D55C" +
+ "DA56C9EC 2EF29632 387FE8D7 6E3C0468 043E8F66 3F4860EE" +
+ "12BF2D5B 0B7474D6 E694F91E 6DCC4024 FFFFFFFF FFFFFFFF";
+
+ public static final String P8192 =
+ "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" +
+ "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" +
+ "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" +
+ "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" +
+ "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" +
+ "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" +
+ "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" +
+ "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" +
+ "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" +
+ "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" +
+ "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" +
+ "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" +
+ "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" +
+ "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" +
+ "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" +
+ "43DB5BFC E0FD108E 4B82D120 A9210801 1A723C12 A787E6D7" +
+ "88719A10 BDBA5B26 99C32718 6AF4E23C 1A946834 B6150BDA" +
+ "2583E9CA 2AD44CE8 DBBBC2DB 04DE8EF9 2E8EFC14 1FBECAA6" +
+ "287C5947 4E6BC05D 99B2964F A090C3A2 233BA186 515BE7ED" +
+ "1F612970 CEE2D7AF B81BDD76 2170481C D0069127 D5B05AA9" +
+ "93B4EA98 8D8FDDC1 86FFB7DC 90A6C08F 4DF435C9 34028492" +
+ "36C3FAB4 D27C7026 C1D4DCB2 602646DE C9751E76 3DBA37BD" +
+ "F8FF9406 AD9E530E E5DB382F 413001AE B06A53ED 9027D831" +
+ "179727B0 865A8918 DA3EDBEB CF9B14ED 44CE6CBA CED4BB1B" +
+ "DB7F1447 E6CC254B 33205151 2BD7AF42 6FB8F401 378CD2BF" +
+ "5983CA01 C64B92EC F032EA15 D1721D03 F482D7CE 6E74FEF6" +
+ "D55E702F 46980C82 B5A84031 900B1C9E 59E7C97F BEC7E8F3" +
+ "23A97A7E 36CC88BE 0F1D45B7 FF585AC5 4BD407B2 2B4154AA" +
+ "CC8F6D7E BF48E1D8 14CC5ED2 0F8037E0 A79715EE F29BE328" +
+ "06A1D58B B7C5DA76 F550AA3D 8A1FBFF0 EB19CCB1 A313D55C" +
+ "DA56C9EC 2EF29632 387FE8D7 6E3C0468 043E8F66 3F4860EE" +
+ "12BF2D5B 0B7474D6 E694F91E 6DBE1159 74A3926F 12FEE5E4" +
+ "38777CB6 A932DF8C D8BEC4D0 73B931BA 3BC832B6 8D9DD300" +
+ "741FA7BF 8AFC47ED 2576F693 6BA42466 3AAB639C 5AE4F568" +
+ "3423B474 2BF1C978 238F16CB E39D652D E3FDB8BE FC848AD9" +
+ "22222E04 A4037C07 13EB57A8 1A23F0C7 3473FC64 6CEA306B" +
+ "4BCBC886 2F8385DD FA9D4B7F A2C087E8 79683303 ED5BDD3A" +
+ "062B3CF5 B3A278A6 6D2A13F8 3F44F82D DF310EE0 74AB6A36" +
+ "4597E899 A0255DC1 64F31CC5 0846851D F9AB4819 5DED7EA1" +
+ "B1D510BD 7EE74D73 FAF36BC3 1ECFA268 359046F4 EB879F92" +
+ "4009438B 481C6CD7 889A002E D5EE382B C9190DA6 FC026E47" +
+ "9558E447 5677E9AA 9E3050E2 765694DF C81F56E8 80B96E71" +
+ "60C980DD 98EDD3DF FFFFFFFF FFFFFFFF";
+
+ public static BigInteger getBestPrime(int keySize) {
+ String primeString;
+ if (keySize >= (8192 + 6144) / 2) {
+ primeString = P8192;
+ } else if (keySize >= (6144 + 4096) / 2) {
+ primeString = P6144;
+ } else if (keySize >= (4096 + 3072) / 2) {
+ primeString = P4096;
+ } else if (keySize >= (3072 + 2048) / 2) {
+ primeString = P3072;
+ } else if (keySize >= (2048 + 1536) / 2) {
+ primeString = P2048;
+ } else {
+ primeString = P1536;
+ }
+
+ return new BigInteger(primeString.replaceAll(" ", ""), 16);
+ }
+}