Package org.bouncycastle.math.ec

## Class ECPoint.AbstractF2m

- java.lang.Object
- - org.bouncycastle.math.ec.ECPoint
  - - org.bouncycastle.math.ec.ECPoint.AbstractF2m

- Direct Known Subclasses:
    `ECPoint.F2m`, `SecT113R1Point`, `SecT113R2Point`, `SecT131R1Point`, `SecT131R2Point`, `SecT163K1Point`, `SecT163R1Point`, `SecT163R2Point`, `SecT193R1Point`, `SecT193R2Point`, `SecT233K1Point`, `SecT233R1Point`, `SecT239K1Point`, `SecT283K1Point`, `SecT283R1Point`, `SecT409K1Point`, `SecT409R1Point`, `SecT571K1Point`, `SecT571R1Point`
  Enclosing class:
    ECPoint

      public abstract static class ECPoint.AbstractF2m
      extends ECPoint

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.bouncycastle.math.ec.ECPoint

      `ECPoint.AbstractF2m, ECPoint.AbstractFp, ECPoint.F2m, ECPoint.Fp`

  - ### Field Summary

    - ### Fields inherited from class org.bouncycastle.math.ec.ECPoint

      `curve, EMPTY_ZS, preCompTable, x, y, zs`

  - ### Constructor Summary

    Constructors
    Modifier | Constructor | Description
    --- | --- | ---
    `protected` | `AbstractF2m​(ECCurve curve, ECFieldElement x, ECFieldElement y)` |
    `protected` | `AbstractF2m​(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected boolean` | `satisfiesCurveEquation()` |
    `protected boolean` | `satisfiesOrder()` |
    `ECPoint` | `scaleX​(ECFieldElement scale)` |
    `ECPoint` | `scaleXNegateY​(ECFieldElement scale)` |
    `ECPoint` | `scaleY​(ECFieldElement scale)` |
    `ECPoint` | `scaleYNegateX​(ECFieldElement scale)` |
    `ECPoint` | `subtract​(ECPoint b)` |
    `ECPoint.AbstractF2m` | `tau()` |
    `ECPoint.AbstractF2m` | `tauPow​(int pow)` |

    - ### Methods inherited from class org.bouncycastle.math.ec.ECPoint

      `add, checkNormalized, createScaledPoint, detach, equals, equals, getAffineXCoord, getAffineYCoord, getCompressionYTilde, getCurve, getCurveCoordinateSystem, getDetachedPoint, getEncoded, getEncoded, getInitialZCoords, getRawXCoord, getRawYCoord, getRawZCoords, getXCoord, getYCoord, getZCoord, getZCoords, hashCode, isInfinity, isNormalized, isValid, multiply, negate, normalize, threeTimes, timesPow2, toString, twice, twicePlus`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### AbstractF2m

          protected AbstractF2m​(ECCurve curve,
                                ECFieldElement x,
                                ECFieldElement y)

    - #### AbstractF2m

          protected AbstractF2m​(ECCurve curve,
                                ECFieldElement x,
                                ECFieldElement y,
                                ECFieldElement[] zs)

  - ### Method Detail

    - #### satisfiesCurveEquation

          protected boolean satisfiesCurveEquation()

      Specified by:
        `satisfiesCurveEquation` in class `ECPoint`

    - #### satisfiesOrder

          protected boolean satisfiesOrder()

      Overrides:
        `satisfiesOrder` in class `ECPoint`

    - #### scaleX

          public ECPoint scaleX​(ECFieldElement scale)

      Overrides:
        `scaleX` in class `ECPoint`

    - #### scaleXNegateY

          public ECPoint scaleXNegateY​(ECFieldElement scale)

      Overrides:
        `scaleXNegateY` in class `ECPoint`

    - #### scaleY

          public ECPoint scaleY​(ECFieldElement scale)

      Overrides:
        `scaleY` in class `ECPoint`

    - #### scaleYNegateX

          public ECPoint scaleYNegateX​(ECFieldElement scale)

      Overrides:
        `scaleYNegateX` in class `ECPoint`

    - #### subtract

          public ECPoint subtract​(ECPoint b)

      Specified by:
        `subtract` in class `ECPoint`

    - #### tau

          public ECPoint.AbstractF2m tau()

    - #### tauPow

          public ECPoint.AbstractF2m tauPow​(int pow)