Class SRP6Util

java.lang.Object

org.gudy.bouncycastle.crypto.agreement.srp.SRP6Util

public class SRP6Util
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static BigInteger	ONE
private static BigInteger	ZERO

Constructor Summary

Constructors

Constructor	Description
SRP6Util()

Method Summary

Modifier and Type	Method	Description
static BigInteger	calculateK(Digest digest, BigInteger N, BigInteger g)
static BigInteger	calculateU(Digest digest, BigInteger N, BigInteger A, BigInteger B)
static BigInteger	calculateX(Digest digest, BigInteger N, byte[] salt, byte[] identity, byte[] password)
static BigInteger	generatePrivateValue(Digest digest, BigInteger N, BigInteger g, SecureRandom random)
private static byte[]	getPadded(BigInteger n, int length)
private static BigInteger	hashPaddedPair(Digest digest, BigInteger N, BigInteger n1, BigInteger n2)
static BigInteger	validatePublicValue(BigInteger N, BigInteger val)

Methods inherited from class Object

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

Field Details

ZERO

private static BigInteger ZERO

ONE

private static BigInteger ONE

Constructor Details

SRP6Util

public SRP6Util()

Method Details

calculateK

public static BigInteger calculateK(Digest digest,
 BigInteger N,
 BigInteger g)

calculateU

public static BigInteger calculateU(Digest digest,
 BigInteger N,
 BigInteger A,
 BigInteger B)

calculateX

public static BigInteger calculateX(Digest digest,
 BigInteger N,
 byte[] salt,
 byte[] identity,
 byte[] password)

generatePrivateValue

public static BigInteger generatePrivateValue(Digest digest,
 BigInteger N,
 BigInteger g,
 SecureRandom random)

validatePublicValue

public static BigInteger validatePublicValue(BigInteger N,
 BigInteger val)
                                      throws CryptoException

Throws:

CryptoException

hashPaddedPair

private static BigInteger hashPaddedPair(Digest digest,
 BigInteger N,
 BigInteger n1,
 BigInteger n2)

getPadded

private static byte[] getPadded(BigInteger n,
 int length)