summaryrefslogtreecommitdiffstats
path: root/libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java
diff options
context:
space:
mode:
Diffstat (limited to 'libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java')
-rw-r--r--libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java136
1 files changed, 46 insertions, 90 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java b/libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java
index b068863ed0a..85b3b1139dc 100644
--- a/libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java
+++ b/libjava/classpath/gnu/javax/crypto/key/srp6/SRPAlgorithm.java
@@ -38,15 +38,14 @@ exception statement from your version. */
package gnu.javax.crypto.key.srp6;
-import gnu.java.security.util.Prime2;
import gnu.javax.crypto.sasl.srp.SRPRegistry;
import java.math.BigInteger;
/**
- * <p>Utilities for use with SRP-6 based methods and protocols.</p>
- *
- * <p>Reference:</p>
+ * Utilities for use with SRP-6 based methods and protocols.
+ * <p>
+ * Reference:
* <ol>
* <li><a href="http://srp.stanford.edu/design.html">SRP Protocol Design</a><br>
* Thomas J. Wu.</li>
@@ -54,122 +53,79 @@ import java.math.BigInteger;
*/
public class SRPAlgorithm
{
-
- // Constants and variables
- // -------------------------------------------------------------------------
-
// lifted from draft-burdis-cat-srp-sasl-09
public static final BigInteger N_2048 = new BigInteger(
- "AC6BDB41324A9A9BF166DE5E1389582FAF72B6651987EE07FC3192943DB56050"
- + "A37329CBB4A099ED8193E0757767A13DD52312AB4B03310DCD7F48A9DA04FD50"
- + "E8083969EDB767B0CF6095179A163AB3661A05FBD5FAAAE82918A9962F0B93B8"
- + "55F97993EC975EEAA80D740ADBF4FF747359D041D5C33EA71D281E446B14773B"
- + "CA97B43A23FB801676BD207A436C6481F1D2B9078717461A5B9D32E688F87748"
- + "544523B524B0D57D5EA77A2775D2ECFA032CFBDBF52FB3786160279004E57AE6"
- + "AF874E7303CE53299CCC041C7BC308D82A5698F3A8D0C38271AE35F8E9DBFBB6"
- + "94B5C803D89F7AE435DE236D525F54759B65E372FCD68EF20FA7111F9E4AFF73",
- 16);
-
+ "AC6BDB41324A9A9BF166DE5E1389582FAF72B6651987EE07FC3192943DB56050"
+ + "A37329CBB4A099ED8193E0757767A13DD52312AB4B03310DCD7F48A9DA04FD50"
+ + "E8083969EDB767B0CF6095179A163AB3661A05FBD5FAAAE82918A9962F0B93B8"
+ + "55F97993EC975EEAA80D740ADBF4FF747359D041D5C33EA71D281E446B14773B"
+ + "CA97B43A23FB801676BD207A436C6481F1D2B9078717461A5B9D32E688F87748"
+ + "544523B524B0D57D5EA77A2775D2ECFA032CFBDBF52FB3786160279004E57AE6"
+ + "AF874E7303CE53299CCC041C7BC308D82A5698F3A8D0C38271AE35F8E9DBFBB6"
+ + "94B5C803D89F7AE435DE236D525F54759B65E372FCD68EF20FA7111F9E4AFF73", 16);
public static final BigInteger N_1536 = new BigInteger(
- "9DEF3CAFB939277AB1F12A8617A47BBBDBA51DF499AC4C80BEEEA9614B19CC4D"
- + "5F4F5F556E27CBDE51C6A94BE4607A291558903BA0D0F84380B655BB9A22E8DC"
- + "DF028A7CEC67F0D08134B1C8B97989149B609E0BE3BAB63D47548381DBC5B1FC"
- + "764E3F4B53DD9DA1158BFD3E2B9C8CF56EDF019539349627DB2FD53D24B7C486"
- + "65772E437D6C7F8CE442734AF7CCB7AE837C264AE3A9BEB87F8A2FE9B8B5292E"
- + "5A021FFF5E91479E8CE7A28C2442C6F315180F93499A234DCF76E3FED135F9BB",
- 16);
-
+ "9DEF3CAFB939277AB1F12A8617A47BBBDBA51DF499AC4C80BEEEA9614B19CC4D"
+ + "5F4F5F556E27CBDE51C6A94BE4607A291558903BA0D0F84380B655BB9A22E8DC"
+ + "DF028A7CEC67F0D08134B1C8B97989149B609E0BE3BAB63D47548381DBC5B1FC"
+ + "764E3F4B53DD9DA1158BFD3E2B9C8CF56EDF019539349627DB2FD53D24B7C486"
+ + "65772E437D6C7F8CE442734AF7CCB7AE837C264AE3A9BEB87F8A2FE9B8B5292E"
+ + "5A021FFF5E91479E8CE7A28C2442C6F315180F93499A234DCF76E3FED135F9BB", 16);
public static final BigInteger N_1280 = new BigInteger(
- "D77946826E811914B39401D56A0A7843A8E7575D738C672A090AB1187D690DC4"
- + "3872FC06A7B6A43F3B95BEAEC7DF04B9D242EBDC481111283216CE816E004B78"
- + "6C5FCE856780D41837D95AD787A50BBE90BD3A9C98AC0F5FC0DE744B1CDE1891"
- + "690894BC1F65E00DE15B4B2AA6D87100C9ECC2527E45EB849DEB14BB2049B163"
- + "EA04187FD27C1BD9C7958CD40CE7067A9C024F9B7C5A0B4F5003686161F0605B",
- 16);
-
+ "D77946826E811914B39401D56A0A7843A8E7575D738C672A090AB1187D690DC4"
+ + "3872FC06A7B6A43F3B95BEAEC7DF04B9D242EBDC481111283216CE816E004B78"
+ + "6C5FCE856780D41837D95AD787A50BBE90BD3A9C98AC0F5FC0DE744B1CDE1891"
+ + "690894BC1F65E00DE15B4B2AA6D87100C9ECC2527E45EB849DEB14BB2049B163"
+ + "EA04187FD27C1BD9C7958CD40CE7067A9C024F9B7C5A0B4F5003686161F0605B", 16);
public static final BigInteger N_1024 = new BigInteger(
- "EEAF0AB9ADB38DD69C33F80AFA8FC5E86072618775FF3C0B9EA2314C9C256576"
- + "D674DF7496EA81D3383B4813D692C6E0E0D5D8E250B98BE48E495C1D6089DAD1"
- + "5DC7D7B46154D6B6CE8EF4AD69B15D4982559B297BCF1885C529F566660E57EC"
- + "68EDBC3C05726CC02FD4CBF4976EAA9AFD5138FE8376435B9FC61D2FC0EB06E3",
- 16);
-
+ "EEAF0AB9ADB38DD69C33F80AFA8FC5E86072618775FF3C0B9EA2314C9C256576"
+ + "D674DF7496EA81D3383B4813D692C6E0E0D5D8E250B98BE48E495C1D6089DAD1"
+ + "5DC7D7B46154D6B6CE8EF4AD69B15D4982559B297BCF1885C529F566660E57EC"
+ + "68EDBC3C05726CC02FD4CBF4976EAA9AFD5138FE8376435B9FC61D2FC0EB06E3", 16);
public static final BigInteger N_768 = new BigInteger(
- "B344C7C4F8C495031BB4E04FF8F84EE95008163940B9558276744D91F7CC9F40"
- + "2653BE7147F00F576B93754BCDDF71B636F2099E6FFF90E79575F3D0DE694AFF"
- + "737D9BE9713CEF8D837ADA6380B1093E94B6A529A8C6C2BE33E0867C60C3262B",
- 16);
-
+ "B344C7C4F8C495031BB4E04FF8F84EE95008163940B9558276744D91F7CC9F40"
+ + "2653BE7147F00F576B93754BCDDF71B636F2099E6FFF90E79575F3D0DE694AFF"
+ + "737D9BE9713CEF8D837ADA6380B1093E94B6A529A8C6C2BE33E0867C60C3262B", 16);
public static final BigInteger N_640 = new BigInteger(
- "C94D67EB5B1A2346E8AB422FC6A0EDAEDA8C7F894C9EEEC42F9ED250FD7F0046"
- + "E5AF2CF73D6B2FA26BB08033DA4DE322E144E7A8E9B12A0E4637F6371F34A207"
- + "1C4B3836CBEEAB15034460FAA7ADF483",
- 16);
-
+ "C94D67EB5B1A2346E8AB422FC6A0EDAEDA8C7F894C9EEEC42F9ED250FD7F0046"
+ + "E5AF2CF73D6B2FA26BB08033DA4DE322E144E7A8E9B12A0E4637F6371F34A207"
+ + "1C4B3836CBEEAB15034460FAA7ADF483", 16);
public static final BigInteger N_512 = new BigInteger(
- "D4C7F8A2B32C11B8FBA9581EC4BA4F1B04215642EF7355E37C0FC0443EF756EA"
- + "2C6B8EEB755A1C723027663CAA265EF785B8FF6A9B35227A52D86633DBDFCA43",
- 16);
-
+ "D4C7F8A2B32C11B8FBA9581EC4BA4F1B04215642EF7355E37C0FC0443EF756EA"
+ + "2C6B8EEB755A1C723027663CAA265EF785B8FF6A9B35227A52D86633DBDFCA43", 16);
public static final BigInteger N_384 = new BigInteger(
- "8025363296FB943FCE54BE717E0E2958A02A9672EF561953B2BAA3BAACC3ED57"
- + "54EB764C7AB7184578C57D5949CCB41B",
- 16);
-
+ "8025363296FB943FCE54BE717E0E2958A02A9672EF561953B2BAA3BAACC3ED57"
+ + "54EB764C7AB7184578C57D5949CCB41B", 16);
public static final BigInteger N_264 = new BigInteger(
- "115B8B692E0E045692CF280B436735C77A5A9E8A9E7ED56C965F87DB5B2A2ECE3",
- 16);
-
+ "115B8B692E0E045692CF280B436735C77A5A9E8A9E7ED56C965F87DB5B2A2ECE3", 16);
private static final BigInteger ZERO = BigInteger.ZERO;
-
private static final BigInteger ONE = BigInteger.ONE;
-
private static final BigInteger TWO = BigInteger.valueOf(2L);
- // Constructor(s)
- // -------------------------------------------------------------------------
-
/** Trivial constructor to enforce usage through class methods. */
private SRPAlgorithm()
{
super();
}
- // Class methods
- // -------------------------------------------------------------------------
-
public static void checkParams(final BigInteger N, final BigInteger g)
{
// 1. N should be at least 512-bit long
final int blen = N.bitLength();
if (blen < SRPRegistry.MINIMUM_MODULUS_BITLENGTH)
- {
- throw new IllegalArgumentException(
- "Bit length of N ("
- + blen
- + ") is too low. Should be at least "
- + SRPRegistry.MINIMUM_MODULUS_BITLENGTH);
- }
+ throw new IllegalArgumentException("Bit length of N ("
+ + blen
+ + ") is too low. Should be at least "
+ + SRPRegistry.MINIMUM_MODULUS_BITLENGTH);
// 2. N should be a prime
- if (!Prime2.passEulerCriterion(N))
- {
- throw new IllegalArgumentException("N should be prime but isn't");
- }
+ if (! N.isProbablePrime(80))
+ throw new IllegalArgumentException("N should be prime but isn't");
// 3. N should be of the form 2*q + 1, where q is prime
final BigInteger q = N.subtract(ONE).divide(TWO);
- if (!Prime2.passEulerCriterion(q))
- {
- throw new IllegalArgumentException("(N-1)/2 should be prime but isn't");
- }
+ if (! q.isProbablePrime(80))
+ throw new IllegalArgumentException("(N-1)/2 should be prime but isn't");
// 4. g**q should be -1 mod N
final BigInteger gq = g.modPow(q, N).add(ONE).mod(N);
if (gq.compareTo(ZERO) != 0)
- {
- throw new IllegalArgumentException(
- "g**q should be -1 (mod N) but isn't");
- }
+ throw new IllegalArgumentException("g**q should be -1 (mod N) but isn't");
}
-
- // Instance methods
- // -------------------------------------------------------------------------
}
OpenPOWER on IntegriCloud