diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig')
4 files changed, 686 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHKeyFactory.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHKeyFactory.java new file mode 100644 index 000000000..98b265dd3 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHKeyFactory.java @@ -0,0 +1,219 @@ +/* DHKeyFactory.java -- DH key-factory JCE Adapter + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is 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, 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; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, 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.crypto.jce.sig; + +import gnu.java.security.Registry; +import gnu.javax.crypto.key.dh.DHKeyPairPKCS8Codec; +import gnu.javax.crypto.key.dh.DHKeyPairX509Codec; +import gnu.javax.crypto.key.dh.GnuDHPrivateKey; +import gnu.javax.crypto.key.dh.GnuDHPublicKey; + +import java.math.BigInteger; +import java.security.InvalidKeyException; +import java.security.Key; +import java.security.KeyFactorySpi; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.KeySpec; +import java.security.spec.PKCS8EncodedKeySpec; +import java.security.spec.X509EncodedKeySpec; + +import javax.crypto.interfaces.DHPrivateKey; +import javax.crypto.interfaces.DHPublicKey; +import javax.crypto.spec.DHPrivateKeySpec; +import javax.crypto.spec.DHPublicKeySpec; + +/** + * Implementation of a JCE Adapter for DH a key-factory. + */ +public class DHKeyFactory + extends KeyFactorySpi +{ + // implicit 0-arguments constructor + + protected PublicKey engineGeneratePublic(KeySpec keySpec) + throws InvalidKeySpecException + { + if (keySpec instanceof DHPublicKeySpec) + { + DHPublicKeySpec spec = (DHPublicKeySpec) keySpec; + BigInteger p = spec.getP(); + BigInteger g = spec.getG(); + BigInteger y = spec.getY(); + return new GnuDHPublicKey(Registry.X509_ENCODING_ID, null, p, g, y); + } + if (keySpec instanceof X509EncodedKeySpec) + { + X509EncodedKeySpec spec = (X509EncodedKeySpec) keySpec; + byte[] encoded = spec.getEncoded(); + PublicKey result; + try + { + result = new DHKeyPairX509Codec().decodePublicKey(encoded); + return result; + } + catch (RuntimeException x) + { + InvalidKeySpecException y = new InvalidKeySpecException(); + y.initCause(x); + throw y; + } + } + throw new InvalidKeySpecException("Unsupported (public) key specification"); + } + + protected PrivateKey engineGeneratePrivate(KeySpec keySpec) + throws InvalidKeySpecException + { + if (keySpec instanceof DHPrivateKeySpec) + { + DHPrivateKeySpec spec = (DHPrivateKeySpec) keySpec; + BigInteger p = spec.getP(); + BigInteger g = spec.getG(); + BigInteger x = spec.getX(); + return new GnuDHPrivateKey(Registry.PKCS8_ENCODING_ID, null, p, g, x); + } + if (keySpec instanceof PKCS8EncodedKeySpec) + { + PKCS8EncodedKeySpec spec = (PKCS8EncodedKeySpec) keySpec; + byte[] encoded = spec.getEncoded(); + PrivateKey result; + try + { + result = new DHKeyPairPKCS8Codec().decodePrivateKey(encoded); + return result; + } + catch (RuntimeException x) + { + InvalidKeySpecException y = new InvalidKeySpecException(); + y.initCause(x); + throw y; + } + } + throw new InvalidKeySpecException("Unsupported (private) key specification"); + } + + protected KeySpec engineGetKeySpec(Key key, Class keySpec) + throws InvalidKeySpecException + { + if (key instanceof DHPublicKey) + { + if (keySpec.isAssignableFrom(DHPublicKeySpec.class)) + { + DHPublicKey dssKey = (DHPublicKey) key; + BigInteger p = dssKey.getParams().getP(); + BigInteger g = dssKey.getParams().getG(); + BigInteger y = dssKey.getY(); + return new DHPublicKeySpec(y, p, g); + } + if (keySpec.isAssignableFrom(X509EncodedKeySpec.class)) + { + if (key instanceof GnuDHPublicKey) + { + GnuDHPublicKey dhKey = (GnuDHPublicKey) key; + byte[] encoded = dhKey.getEncoded(Registry.X509_ENCODING_ID); + return new X509EncodedKeySpec(encoded); + } + if (Registry.X509_ENCODING_SORT_NAME.equalsIgnoreCase(key.getFormat())) + { + byte[] encoded = key.getEncoded(); + return new X509EncodedKeySpec(encoded); + } + throw new InvalidKeySpecException( + "Wrong key type or unsupported (public) key specification"); + } + throw new InvalidKeySpecException("Unsupported (public) key specification"); + } + if (key instanceof DHPrivateKey) + { + if (keySpec.isAssignableFrom(DHPrivateKeySpec.class)) + { + DHPrivateKey dhKey = (DHPrivateKey) key; + BigInteger p = dhKey.getParams().getP(); + BigInteger g = dhKey.getParams().getG(); + BigInteger x = dhKey.getX(); + return new DHPrivateKeySpec(x, p, g); + } + if (keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class)) + { + if (key instanceof GnuDHPrivateKey) + { + GnuDHPrivateKey dhKey = (GnuDHPrivateKey) key; + byte[] encoded = dhKey.getEncoded(Registry.PKCS8_ENCODING_ID); + return new PKCS8EncodedKeySpec(encoded); + } + if (Registry.PKCS8_ENCODING_SHORT_NAME.equalsIgnoreCase(key.getFormat())) + { + byte[] encoded = key.getEncoded(); + return new PKCS8EncodedKeySpec(encoded); + } + throw new InvalidKeySpecException( + "Wrong key type or unsupported (private) key specification"); + } + throw new InvalidKeySpecException( + "Unsupported (private) key specification"); + } + throw new InvalidKeySpecException( + "Wrong key type or unsupported key specification"); + } + + protected Key engineTranslateKey(Key key) throws InvalidKeyException + { + if ((key instanceof GnuDHPublicKey) || (key instanceof GnuDHPrivateKey)) + return key; + if (key instanceof DHPublicKey) + { + DHPublicKey dsaKey = (DHPublicKey) key; + BigInteger p = dsaKey.getParams().getP(); + BigInteger g = dsaKey.getParams().getG(); + BigInteger y = dsaKey.getY(); + return new GnuDHPublicKey(Registry.X509_ENCODING_ID, null, p, g, y); + } + if (key instanceof DHPrivateKey) + { + DHPrivateKey dsaKey = (DHPrivateKey) key; + BigInteger p = dsaKey.getParams().getP(); + BigInteger g = dsaKey.getParams().getG(); + BigInteger x = dsaKey.getX(); + return new GnuDHPrivateKey(Registry.PKCS8_ENCODING_ID, null, p, g, x); + } + throw new InvalidKeyException("Wrong key type"); + } +} diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHKeyPairGeneratorSpi.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHKeyPairGeneratorSpi.java new file mode 100644 index 000000000..e26f07124 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHKeyPairGeneratorSpi.java @@ -0,0 +1,93 @@ +/* DHKeyPairGeneratorSpi.java -- DH key-pair generator JCE Adapter + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is 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, 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; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, 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.crypto.jce.sig; + +import java.security.InvalidAlgorithmParameterException; +import java.security.SecureRandom; +import java.security.spec.AlgorithmParameterSpec; +import java.util.HashMap; + +import javax.crypto.spec.DHGenParameterSpec; +import javax.crypto.spec.DHParameterSpec; + +import gnu.java.security.Registry; +import gnu.java.security.jce.sig.KeyPairGeneratorAdapter; +import gnu.javax.crypto.key.dh.GnuDHKeyPairGenerator; + +public class DHKeyPairGeneratorSpi + extends KeyPairGeneratorAdapter +{ + public DHKeyPairGeneratorSpi() + { + super(Registry.DH_KPG); + } + + public void initialize(int keysize, SecureRandom random) + { + HashMap attributes = new HashMap(); + attributes.put(GnuDHKeyPairGenerator.PRIME_SIZE, Integer.valueOf(keysize)); + if (random != null) + attributes.put(GnuDHKeyPairGenerator.SOURCE_OF_RANDOMNESS, random); + + attributes.put(GnuDHKeyPairGenerator.PREFERRED_ENCODING_FORMAT, + Integer.valueOf(Registry.ASN1_ENCODING_ID)); + adaptee.setup(attributes); + } + + public void initialize(AlgorithmParameterSpec params, SecureRandom random) + throws InvalidAlgorithmParameterException + { + HashMap attributes = new HashMap(); + if (params != null) + { + if (! (params instanceof DHGenParameterSpec) && + ! (params instanceof DHParameterSpec)) + throw new InvalidAlgorithmParameterException("params"); + + attributes.put(GnuDHKeyPairGenerator.DH_PARAMETERS, params); + } + + if (random != null) + attributes.put(GnuDHKeyPairGenerator.SOURCE_OF_RANDOMNESS, random); + + attributes.put(GnuDHKeyPairGenerator.PREFERRED_ENCODING_FORMAT, + Integer.valueOf(Registry.ASN1_ENCODING_ID)); + adaptee.setup(attributes); + } +} diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHParameters.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHParameters.java new file mode 100644 index 000000000..a917e2230 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHParameters.java @@ -0,0 +1,222 @@ +/* DHParameters.java -- DH parameters DAO + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is 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, 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; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, 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.crypto.jce.sig; + +import gnu.java.lang.CPStringBuilder; + +import gnu.java.security.Registry; +import gnu.java.security.der.DER; +import gnu.java.security.der.DERReader; +import gnu.java.security.der.DERValue; +import gnu.java.security.der.DERWriter; +import gnu.java.security.util.DerUtil; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.math.BigInteger; +import java.security.AlgorithmParametersSpi; +import java.security.spec.AlgorithmParameterSpec; +import java.security.spec.InvalidParameterSpecException; +import java.util.ArrayList; + +import javax.crypto.spec.DHGenParameterSpec; +import javax.crypto.spec.DHParameterSpec; + +/** + * A JCE-specific Data Access Object (DAO) for DH parameters. + */ +public class DHParameters + extends AlgorithmParametersSpi +{ + /** The prime public modulus. */ + private BigInteger p; + + /** The generator. */ + private BigInteger g; + + /** A prime factor of p-1. */ + private BigInteger q; + + /** The (private) random exponent's size (in bits). */ + private int l; + + // default 0-arguments constructor + + protected void engineInit(AlgorithmParameterSpec spec) + throws InvalidParameterSpecException + { + if (! (spec instanceof DHParameterSpec)) + throw new InvalidParameterSpecException("Wrong AlgorithmParameterSpec type: " + + spec.getClass().getName()); + DHParameterSpec dhSpec = (DHParameterSpec) spec; + p = dhSpec.getP(); + g = dhSpec.getG(); + l = dhSpec.getL(); + } + + /** + * Decodes the set of DH parameters as per RFC-2459; i.e. the DER-encoded + * form of the following ASN.1 construct: + * + * <pre> + * DhParams ::= SEQUENCE { + * p INTEGER, -- odd prime, p=jq +1 + * g INTEGER, -- generator, g + * q INTEGER -- factor of p-1 + * } + * </pre> + */ + protected void engineInit(byte[] params) throws IOException + { + DERReader der = new DERReader(params); + + DERValue derParams = der.read(); + DerUtil.checkIsConstructed(derParams, "Wrong DH Parameters field"); + + DERValue val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong P field"); + p = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong G field"); + g = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong Q field"); + q = (BigInteger) val.getValue(); + l = q.bitLength(); + } + + protected void engineInit(byte[] params, String format) throws IOException + { + if (format != null) + { + format = format.trim(); + if (format.length() == 0) + throw new IOException("Format MUST NOT be an empty string"); + + if (! format.equalsIgnoreCase(Registry.ASN1_ENCODING_SHORT_NAME)) + throw new IOException("Unknown or unsupported format: " + format); + } + + engineInit(params); + } + + protected AlgorithmParameterSpec engineGetParameterSpec(Class paramSpec) + throws InvalidParameterSpecException + { + if (paramSpec.isAssignableFrom(DHParameterSpec.class)) + return new DHParameterSpec(p, g, l); + + if (paramSpec.isAssignableFrom(DHGenParameterSpec.class)) + return new DHGenParameterSpec(p.bitLength(), l); + + throw new InvalidParameterSpecException("Wrong AlgorithmParameterSpec type: " + + paramSpec.getName()); + } + + /** + * Encodes the set of DH parameters as per RFC-2459; i.e. as the DER-encoded + * form of the following ASN.1 construct: + * + * <pre> + * DhParams ::= SEQUENCE { + * p INTEGER, -- odd prime, p=jq +1 + * g INTEGER, -- generator, g + * q INTEGER -- factor of p-1 + * } + * </pre> + */ + protected byte[] engineGetEncoded() throws IOException + { + DERValue derP = new DERValue(DER.INTEGER, p); + DERValue derG = new DERValue(DER.INTEGER, g); + DERValue derQ = new DERValue(DER.INTEGER, q); + + ArrayList params = new ArrayList(3); + params.add(derP); + params.add(derG); + params.add(derQ); + DERValue derParams = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, params); + + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + DERWriter.write(baos, derParams); + byte[] result = baos.toByteArray(); + + return result; + } + + protected byte[] engineGetEncoded(String format) throws IOException + { + if (format != null) + { + format = format.trim(); + if (format.length() == 0) + throw new IOException("Format MUST NOT be an empty string"); + + if (! format.equalsIgnoreCase(Registry.ASN1_ENCODING_SHORT_NAME)) + throw new IOException("Unknown or unsupported format: " + format); + } + + return engineGetEncoded(); + } + + protected String engineToString() + { + CPStringBuilder sb = new CPStringBuilder("p="); + if (p == null) + sb.append("???"); + else + sb.append("0x").append(p.toString(16)); + + sb.append(", g="); + if (g == null) + sb.append("???"); + else + sb.append("0x").append(g.toString(16)); + + sb.append(", q="); + if (q == null) + sb.append("???"); + else + sb.append("0x").append(q.toString(16)); + + sb.append(", l=").append(l); + + return sb.toString(); + } +} diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHParametersGenerator.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHParametersGenerator.java new file mode 100644 index 000000000..3687ac3ca --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/jce/sig/DHParametersGenerator.java @@ -0,0 +1,152 @@ +/* DHParametersGenerator.java -- JCE Adapter for a generator of DH parameters + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is 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, 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; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, 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.crypto.jce.sig; + +import gnu.java.security.Registry; +import gnu.javax.crypto.jce.GnuCrypto; +import gnu.javax.crypto.key.dh.GnuDHKeyPairGenerator; +import gnu.javax.crypto.key.dh.RFC2631; + +import java.math.BigInteger; +import java.security.AlgorithmParameterGeneratorSpi; +import java.security.AlgorithmParameters; +import java.security.InvalidAlgorithmParameterException; +import java.security.InvalidParameterException; +import java.security.NoSuchAlgorithmException; +import java.security.Provider; +import java.security.SecureRandom; +import java.security.spec.AlgorithmParameterSpec; +import java.security.spec.InvalidParameterSpecException; + +import javax.crypto.spec.DHGenParameterSpec; +import javax.crypto.spec.DHParameterSpec; + +/** + * A JCE Adapter for a generator of DH parameters. + */ +public class DHParametersGenerator + extends AlgorithmParameterGeneratorSpi +{ + private static final Provider GNU_CRYPTO = new GnuCrypto(); + + /** Size of the prime (public) modulus in bits. */ + private int modulusSize = -1; + + /** Size of the prime (private) modulus in bits. */ + private int exponentSize = -1; + + /** User specified source of randomness. */ + private SecureRandom rnd; + + /** Our concrete DH parameters generator. */ + private RFC2631 rfc2631; + + + protected void engineInit(int size, SecureRandom random) + { + if ((size % 256) != 0 || size < GnuDHKeyPairGenerator.DEFAULT_PRIME_SIZE) + throw new InvalidParameterException("Prime modulus (p) size (in bits) " + + "MUST be a multiple of 256, and " + + "greater than or equal to 1024"); + this.modulusSize = size; + this.rnd = random; + } + + protected void engineInit(AlgorithmParameterSpec spec, SecureRandom random) + throws InvalidAlgorithmParameterException + { + if (spec instanceof DHParameterSpec) + { + DHParameterSpec dhSpec = (DHParameterSpec) spec; + BigInteger p = dhSpec.getP(); + int size = p.bitLength(); + this.engineInit(size, random); + } + else if (spec instanceof DHGenParameterSpec) + { + DHGenParameterSpec dhSpec = (DHGenParameterSpec) spec; + int size = dhSpec.getPrimeSize(); + this.engineInit(size, random); + exponentSize = dhSpec.getExponentSize(); + + if ((exponentSize % 8) != 0 + || exponentSize < GnuDHKeyPairGenerator.DEFAULT_EXPONENT_SIZE) + throw new InvalidParameterException("Random exponent size (in bits) " + + "MUST be a multiple of 8, and " + + "greater than or equal to " + + GnuDHKeyPairGenerator.DEFAULT_EXPONENT_SIZE); + if (exponentSize > modulusSize) + throw new InvalidParameterException("Random exponent size (in bits) " + + "MUST be less than that of the " + + "public prime modulus (p)"); + } + + throw new InvalidAlgorithmParameterException("Wrong AlgorithmParameterSpec type: " + + spec.getClass().getName()); + } + + protected AlgorithmParameters engineGenerateParameters() + { + if (modulusSize < 1) + modulusSize = GnuDHKeyPairGenerator.DEFAULT_PRIME_SIZE; + + if (exponentSize < 1) + exponentSize = GnuDHKeyPairGenerator.DEFAULT_EXPONENT_SIZE; + + rfc2631 = new RFC2631(exponentSize, modulusSize, rnd); + BigInteger[] params = rfc2631.generateParameters(); + BigInteger p = params[RFC2631.DH_PARAMS_P]; + BigInteger g = params[RFC2631.DH_PARAMS_G]; + int l = params[RFC2631.DH_PARAMS_Q].bitLength(); + DHParameterSpec spec = new DHParameterSpec(p, g, l); + AlgorithmParameters result = null; + try + { + result = AlgorithmParameters.getInstance(Registry.DH_KPG, GNU_CRYPTO); + result.init(spec); + } + catch (NoSuchAlgorithmException ignore) + { + } + catch (InvalidParameterSpecException ignore) + { + } + return result; + } +} |