SM9P256V1Point (Bouncy Castle Library 1.86 API Specification)

java.lang.Object
- org.bouncycastle.math.ec.ECPoint
- - org.bouncycastle.math.ec.ECPoint.AbstractFp
  - - org.bouncycastle.math.ec.custom.gm.SM9P256V1Point

```
public class SM9P256V1Point
extends ECPoint.AbstractFp
```
Jacobian-coordinate point of the SM9 G1 curve y^2 = x^3 + 5 (a = 0) over SM9P256V1Field.
The group law is the standard a=0 Jacobian addition (add-2007-bl) and doubling (dbl-2009-l), written in terms of the ECFieldElement operations so it is correct over the Montgomery-form field. (It does not use the Solinas-specific int[]-level fused reductions that SM2P256V1Point relies on, which are not valid for a Montgomery representation.)

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ECPoint`	`add(ECPoint b)`
`protected ECPoint`	`detach()`
`ECPoint`	`negate()`
`ECPoint`	`threeTimes()`
`ECPoint`	`twice()`
`ECPoint`	`twicePlus(ECPoint b)`

Methods inherited from class org.bouncycastle.math.ec.ECPoint.AbstractFp
getCompressionYTilde, satisfiesCurveEquation, subtract

Methods inherited from class org.bouncycastle.math.ec.ECPoint
checkNormalized, createScaledPoint, encodeTo, equals, equals, getAffineXCoord, getAffineYCoord, getCurve, getCurveCoordinateSystem, getDetachedPoint, getEncoded, getEncodedLength, getInitialZCoords, getRawXCoord, getRawYCoord, getRawZCoords, getXCoord, getYCoord, getZCoord, getZCoords, hashCode, isInfinity, isNormalized, isValid, multiply, normalize, satisfiesOrder, scaleX, scaleXNegateY, scaleY, scaleYNegateX, timesPow2, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Method Detail
  - detach
```
protected ECPoint detach()
```
    Specified by:
    
    detach in class ECPoint
  - add
```
public ECPoint add(ECPoint b)
```
    Specified by:
    
    add in class ECPoint
  - twice
```
public ECPoint twice()
```
    Specified by:
    
    twice in class ECPoint
  - twicePlus
```
public ECPoint twicePlus(ECPoint b)
```
    Overrides:
    
    twicePlus in class ECPoint
  - threeTimes
```
public ECPoint threeTimes()
```
    Overrides:
    
    threeTimes in class ECPoint
  - negate
```
public ECPoint negate()
```
    Specified by:
    
    negate in class ECPoint