org.gudy.bouncycastle.math.ec
Class ECPoint.F2m

java.lang.Object
  extended by org.gudy.bouncycastle.math.ec.ECPoint
      extended by org.gudy.bouncycastle.math.ec.ECPoint.F2m
Enclosing class:
ECPoint

public static class ECPoint.F2m
extends ECPoint

Elliptic curve points over F2m


Nested Class Summary
 
Nested classes/interfaces inherited from class org.gudy.bouncycastle.math.ec.ECPoint
ECPoint.F2m, ECPoint.Fp
 
Field Summary
 
Fields inherited from class org.gudy.bouncycastle.math.ec.ECPoint
multiplier, preCompInfo, withCompression
 
Constructor Summary
ECPoint.F2m(ECCurve curve)
          Deprecated. use ECCurve.getInfinity() Constructor for point at infinity
ECPoint.F2m(ECCurve curve, ECFieldElement x, ECFieldElement y)
           
ECPoint.F2m(ECCurve curve, ECFieldElement x, ECFieldElement y, boolean withCompression)
           
 
Method Summary
 ECPoint add(ECPoint b)
           
 ECPoint.F2m addSimple(ECPoint.F2m b)
          Adds another ECPoints.F2m to this without checking if both points are on the same curve.
 byte[] getEncoded()
           
 ECPoint negate()
           
 ECPoint subtract(ECPoint b)
           
 ECPoint.F2m subtractSimple(ECPoint.F2m b)
          Subtracts another ECPoints.F2m from this without checking if both points are on the same curve.
 ECPoint twice()
           
 
Methods inherited from class org.gudy.bouncycastle.math.ec.ECPoint
equals, getCurve, getX, getY, hashCode, isCompressed, isInfinity, multiply
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ECPoint.F2m

public ECPoint.F2m(ECCurve curve,
                   ECFieldElement x,
                   ECFieldElement y)
Parameters:
curve - base curve
x - x point
y - y point

ECPoint.F2m

public ECPoint.F2m(ECCurve curve,
                   ECFieldElement x,
                   ECFieldElement y,
                   boolean withCompression)
Parameters:
curve - base curve
x - x point
y - y point
withCompression - true if encode with point compression.

ECPoint.F2m

public ECPoint.F2m(ECCurve curve)
Deprecated. use ECCurve.getInfinity() Constructor for point at infinity

Method Detail

getEncoded

public byte[] getEncoded()
Specified by:
getEncoded in class ECPoint

add

public ECPoint add(ECPoint b)
Specified by:
add in class ECPoint

addSimple

public ECPoint.F2m addSimple(ECPoint.F2m b)
Adds another ECPoints.F2m to this without checking if both points are on the same curve. Used by multiplication algorithms, because there all points are a multiple of the same point and hence the checks can be omitted.

Parameters:
b - The other ECPoints.F2m to add to this.
Returns:
this + b

subtract

public ECPoint subtract(ECPoint b)
Specified by:
subtract in class ECPoint

subtractSimple

public ECPoint.F2m subtractSimple(ECPoint.F2m b)
Subtracts another ECPoints.F2m from this without checking if both points are on the same curve. Used by multiplication algorithms, because there all points are a multiple of the same point and hence the checks can be omitted.

Parameters:
b - The other ECPoints.F2m to subtract from this.
Returns:
this - b

twice

public ECPoint twice()
Specified by:
twice in class ECPoint

negate

public ECPoint negate()
Specified by:
negate in class ECPoint