Bouncy Castle Cryptography 1.51

org.bouncycastle.math.ec
Class ECAlgorithms

java.lang.Object
  extended by org.bouncycastle.math.ec.ECAlgorithms

public class ECAlgorithms
extends java.lang.Object


Constructor Summary
ECAlgorithms()
           
 
Method Summary
static ECPoint importPoint(ECCurve c, ECPoint p)
           
static boolean isF2mCurve(ECCurve c)
           
static boolean isFpCurve(ECCurve c)
           
static void montgomeryTrick(ECFieldElement[] zs, int off, int len)
           
static ECPoint referenceMultiply(ECPoint p, java.math.BigInteger k)
          Simple shift-and-add multiplication.
static ECPoint shamirsTrick(ECPoint P, java.math.BigInteger k, ECPoint Q, java.math.BigInteger l)
           
static ECPoint sumOfMultiplies(ECPoint[] ps, java.math.BigInteger[] ks)
           
static ECPoint sumOfTwoMultiplies(ECPoint P, java.math.BigInteger a, ECPoint Q, java.math.BigInteger b)
           
static ECPoint validatePoint(ECPoint p)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ECAlgorithms

public ECAlgorithms()
Method Detail

isF2mCurve

public static boolean isF2mCurve(ECCurve c)

isFpCurve

public static boolean isFpCurve(ECCurve c)

sumOfMultiplies

public static ECPoint sumOfMultiplies(ECPoint[] ps,
                                      java.math.BigInteger[] ks)

sumOfTwoMultiplies

public static ECPoint sumOfTwoMultiplies(ECPoint P,
                                         java.math.BigInteger a,
                                         ECPoint Q,
                                         java.math.BigInteger b)

shamirsTrick

public static ECPoint shamirsTrick(ECPoint P,
                                   java.math.BigInteger k,
                                   ECPoint Q,
                                   java.math.BigInteger l)

importPoint

public static ECPoint importPoint(ECCurve c,
                                  ECPoint p)

montgomeryTrick

public static void montgomeryTrick(ECFieldElement[] zs,
                                   int off,
                                   int len)

referenceMultiply

public static ECPoint referenceMultiply(ECPoint p,
                                        java.math.BigInteger k)
Simple shift-and-add multiplication. Serves as reference implementation to verify (possibly faster) implementations, and for very small scalars.

Parameters:
p - The point to multiply.
k - The multiplier.
Returns:
The result of the point multiplication kP.

validatePoint

public static ECPoint validatePoint(ECPoint p)

Bouncy Castle Cryptography 1.51