ECCurve.AbstractFp (Bouncy Castle Library 1.68 API Specification)

java.lang.Object
- org.bouncycastle.math.ec.ECCurve
- - org.bouncycastle.math.ec.ECCurve.AbstractFp

Direct Known Subclasses:

Curve25519, ECCurve.Fp, SecP128R1Curve, SecP160K1Curve, SecP160R1Curve, SecP160R2Curve, SecP192K1Curve, SecP192R1Curve, SecP224K1Curve, SecP224R1Curve, SecP256K1Curve, SecP256R1Curve, SecP384R1Curve, SecP521R1Curve, SM2P256V1Curve

Enclosing class:

ECCurve
```
public abstract static class ECCurve.AbstractFp
extends ECCurve
```

Nested Class Summary
- Nested classes/interfaces inherited from class org.bouncycastle.math.ec.ECCurve
  ECCurve.AbstractF2m, ECCurve.AbstractFp, ECCurve.Config, ECCurve.F2m, ECCurve.Fp

Field Summary
- Fields inherited from class org.bouncycastle.math.ec.ECCurve
  a, b, cofactor, coord, COORD_AFFINE, COORD_HOMOGENEOUS, COORD_JACOBIAN, COORD_JACOBIAN_CHUDNOVSKY, COORD_JACOBIAN_MODIFIED, COORD_LAMBDA_AFFINE, COORD_LAMBDA_PROJECTIVE, COORD_SKEWED, endomorphism, field, multiplier, order

Constructor Summary

Constructors
Modifier Constructor Description

protected AbstractFp(java.math.BigInteger q)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected ECPoint`	`decompressPoint(int yTilde, java.math.BigInteger X1)`
`boolean`	`isValidFieldElement(java.math.BigInteger x)`
`ECFieldElement`	`randomFieldElement(java.security.SecureRandom r)`
`ECFieldElement`	`randomFieldElementMult(java.security.SecureRandom r)`

Methods inherited from class org.bouncycastle.math.ec.ECCurve
checkPoint, checkPoints, checkPoints, cloneCurve, configure, createCacheSafeLookupTable, createDefaultMultiplier, createPoint, createRawPoint, createRawPoint, decodePoint, equals, equals, fromBigInteger, getA, getAllCoordinateSystems, getB, getCofactor, getCoordinateSystem, getEndomorphism, getField, getFieldSize, getInfinity, getMultiplier, getOrder, getPreCompInfo, hashCode, importPoint, normalizeAll, normalizeAll, precompute, supportsCoordinateSystem, validatePoint

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

Constructor Detail

AbstractFp

protected AbstractFp(java.math.BigInteger q)

Method Detail

isValidFieldElement
```
public boolean isValidFieldElement(java.math.BigInteger x)
```
Specified by:

isValidFieldElement in class ECCurve

randomFieldElement

public ECFieldElement randomFieldElement(java.security.SecureRandom r)

Specified by:: randomFieldElement in class ECCurve

randomFieldElementMult

public ECFieldElement randomFieldElementMult(java.security.SecureRandom r)

Specified by:: randomFieldElementMult in class ECCurve

decompressPoint

protected ECPoint decompressPoint(int yTilde,
                                  java.math.BigInteger X1)

Specified by:: decompressPoint in class ECCurve