org.spongycastle.crypto.tls

Class TlsDHUtils

java.lang.Object

org.spongycastle.crypto.tls.TlsDHUtils

public class TlsDHUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.Integer	EXT_negotiated_ff_dhe_groups

Constructor Summary

Constructors

Constructor and Description
TlsDHUtils()

Method Summary

Modifier and Type	Method and Description
static void	addNegotiatedDHEGroupsClientExtension(java.util.Hashtable extensions, short[] dheGroups)
static void	addNegotiatedDHEGroupsServerExtension(java.util.Hashtable extensions, short dheGroup)
static boolean	areCompatibleParameters(DHParameters a, DHParameters b)
static byte[]	calculateDHBasicAgreement(DHPublicKeyParameters publicKey, DHPrivateKeyParameters privateKey)
static boolean	containsDHECipherSuites(int[] cipherSuites)
static byte[]	createNegotiatedDHEGroupsClientExtension(short[] dheGroups)
static byte[]	createNegotiatedDHEGroupsServerExtension(short dheGroup)
static AsymmetricCipherKeyPair	generateDHKeyPair(java.security.SecureRandom random, DHParameters dhParams)
static DHPrivateKeyParameters	generateEphemeralClientKeyExchange(java.security.SecureRandom random, DHParameters dhParams, java.io.OutputStream output)
static DHPrivateKeyParameters	generateEphemeralServerKeyExchange(java.security.SecureRandom random, DHParameters dhParams, java.io.OutputStream output)
static short[]	getNegotiatedDHEGroupsClientExtension(java.util.Hashtable extensions)
static short	getNegotiatedDHEGroupsServerExtension(java.util.Hashtable extensions)
static DHParameters	getParametersForDHEGroup(short dheGroup)
static boolean	isDHECipherSuite(int cipherSuite)
static java.math.BigInteger	readDHParameter(java.io.InputStream input)
static short[]	readNegotiatedDHEGroupsClientExtension(byte[] extensionData)
static short	readNegotiatedDHEGroupsServerExtension(byte[] extensionData)
static DHParameters	validateDHParameters(DHParameters params)
static DHPublicKeyParameters	validateDHPublicKey(DHPublicKeyParameters key)
static void	writeDHParameter(java.math.BigInteger x, java.io.OutputStream output)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXT_negotiated_ff_dhe_groups

public static final java.lang.Integer EXT_negotiated_ff_dhe_groups

Constructor Detail

TlsDHUtils

public TlsDHUtils()

Method Detail

addNegotiatedDHEGroupsClientExtension

public static void addNegotiatedDHEGroupsClientExtension(java.util.Hashtable extensions,
                                                         short[] dheGroups)
                                                  throws java.io.IOException

Throws:

java.io.IOException

addNegotiatedDHEGroupsServerExtension

public static void addNegotiatedDHEGroupsServerExtension(java.util.Hashtable extensions,
                                                         short dheGroup)
                                                  throws java.io.IOException

Throws:

java.io.IOException

getNegotiatedDHEGroupsClientExtension

public static short[] getNegotiatedDHEGroupsClientExtension(java.util.Hashtable extensions)
                                                     throws java.io.IOException

Throws:

java.io.IOException

getNegotiatedDHEGroupsServerExtension

public static short getNegotiatedDHEGroupsServerExtension(java.util.Hashtable extensions)
                                                   throws java.io.IOException

Throws:

java.io.IOException

createNegotiatedDHEGroupsClientExtension

public static byte[] createNegotiatedDHEGroupsClientExtension(short[] dheGroups)
                                                       throws java.io.IOException

Throws:

java.io.IOException

createNegotiatedDHEGroupsServerExtension

public static byte[] createNegotiatedDHEGroupsServerExtension(short dheGroup)
                                                       throws java.io.IOException

Throws:

java.io.IOException

readNegotiatedDHEGroupsClientExtension

public static short[] readNegotiatedDHEGroupsClientExtension(byte[] extensionData)
                                                      throws java.io.IOException

Throws:

java.io.IOException

readNegotiatedDHEGroupsServerExtension

public static short readNegotiatedDHEGroupsServerExtension(byte[] extensionData)
                                                    throws java.io.IOException

Throws:

java.io.IOException

getParametersForDHEGroup

public static DHParameters getParametersForDHEGroup(short dheGroup)

containsDHECipherSuites

public static boolean containsDHECipherSuites(int[] cipherSuites)

isDHECipherSuite

public static boolean isDHECipherSuite(int cipherSuite)

areCompatibleParameters

public static boolean areCompatibleParameters(DHParameters a,
                                              DHParameters b)

calculateDHBasicAgreement

public static byte[] calculateDHBasicAgreement(DHPublicKeyParameters publicKey,
                                               DHPrivateKeyParameters privateKey)

generateDHKeyPair

public static AsymmetricCipherKeyPair generateDHKeyPair(java.security.SecureRandom random,
                                                        DHParameters dhParams)

generateEphemeralClientKeyExchange

public static DHPrivateKeyParameters generateEphemeralClientKeyExchange(java.security.SecureRandom random,
                                                                        DHParameters dhParams,
                                                                        java.io.OutputStream output)
                                                                 throws java.io.IOException

Throws:

java.io.IOException

generateEphemeralServerKeyExchange

public static DHPrivateKeyParameters generateEphemeralServerKeyExchange(java.security.SecureRandom random,
                                                                        DHParameters dhParams,
                                                                        java.io.OutputStream output)
                                                                 throws java.io.IOException

Throws:

java.io.IOException

validateDHParameters

public static DHParameters validateDHParameters(DHParameters params)
                                         throws java.io.IOException

Throws:

java.io.IOException

validateDHPublicKey

public static DHPublicKeyParameters validateDHPublicKey(DHPublicKeyParameters key)
                                                 throws java.io.IOException

Throws:

java.io.IOException

readDHParameter

public static java.math.BigInteger readDHParameter(java.io.InputStream input)
                                            throws java.io.IOException

Throws:

java.io.IOException

writeDHParameter

public static void writeDHParameter(java.math.BigInteger x,
                                    java.io.OutputStream output)
                             throws java.io.IOException

Throws:

java.io.IOException