java.lang.Object
- org.bouncycastle.math.ec.ECCurve
- - org.bouncycastle.math.ec.ECCurve.AbstractFp
  - - org.bouncycastle.math.ec.custom.sec.SecP256K1Curve

public class SecP256K1Curve
extends ECCurve.AbstractFp

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
Modifier and Type Field Description

protected SecP256K1Point infinity

static java.math.BigInteger q
- 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
Constructor Description

SecP256K1Curve()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected ECCurve`	`cloneCurve()`
`ECLookupTable`	`createCacheSafeLookupTable(ECPoint[] points, int off, int len)`	Create a cache-safe lookup table for the specified sequence of points.
`protected ECPoint`	`createRawPoint(ECFieldElement x, ECFieldElement y)`
`protected ECPoint`	`createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)`
`ECFieldElement`	`fromBigInteger(java.math.BigInteger x)`
`int`	`getFieldSize()`
`ECPoint`	`getInfinity()`
`java.math.BigInteger`	`getQ()`
`ECFieldElement`	`randomFieldElement(java.security.SecureRandom r)`
`ECFieldElement`	`randomFieldElementMult(java.security.SecureRandom r)`
`boolean`	`supportsCoordinateSystem(int coord)`

Methods inherited from class org.bouncycastle.math.ec.ECCurve.AbstractFp
decompressPoint, isValidFieldElement

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

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

Field Detail

q

public static final java.math.BigInteger q

infinity
```
protected SecP256K1Point infinity
```

Constructor Detail
- SecP256K1Curve
```
public SecP256K1Curve()
```

Method Detail

cloneCurve
```
protected ECCurve cloneCurve()
```
Specified by:

cloneCurve in class ECCurve

supportsCoordinateSystem
```
public boolean supportsCoordinateSystem(int coord)
```
Overrides:

supportsCoordinateSystem in class ECCurve

getQ
```
public java.math.BigInteger getQ()
```

getFieldSize
```
public int getFieldSize()
```
Specified by:

getFieldSize in class ECCurve

fromBigInteger

public ECFieldElement fromBigInteger(java.math.BigInteger x)

Specified by:: fromBigInteger in class ECCurve

createRawPoint

protected ECPoint createRawPoint(ECFieldElement x,
                                 ECFieldElement y)

Specified by:: createRawPoint in class ECCurve

createRawPoint

protected ECPoint createRawPoint(ECFieldElement x,
                                 ECFieldElement y,
                                 ECFieldElement[] zs)

Specified by:: createRawPoint in class ECCurve

getInfinity
```
public ECPoint getInfinity()
```
Specified by:

getInfinity in class ECCurve

createCacheSafeLookupTable
```
public ECLookupTable createCacheSafeLookupTable(ECPoint[] points,
                                                int off,
                                                int len)
```
Description copied from class: ECCurve

Create a cache-safe lookup table for the specified sequence of points. All the points MUST belong to this ECCurve instance, and MUST already be normalized.

Overrides:

createCacheSafeLookupTable in class ECCurve

randomFieldElement

public ECFieldElement randomFieldElement(java.security.SecureRandom r)

Overrides:: randomFieldElement in class ECCurve.AbstractFp

randomFieldElementMult

public ECFieldElement randomFieldElementMult(java.security.SecureRandom r)

Overrides:: randomFieldElementMult in class ECCurve.AbstractFp

Modifier and Type	Field	Description
`protected SecP256K1Point`	`infinity`
`static java.math.BigInteger`	`q`

Class SecP256K1Curve

Nested Class Summary

Nested classes/interfaces inherited from class org.bouncycastle.math.ec.ECCurve

Field Summary

Fields inherited from class org.bouncycastle.math.ec.ECCurve

Constructor Summary

Method Summary

Methods inherited from class org.bouncycastle.math.ec.ECCurve.AbstractFp

Methods inherited from class org.bouncycastle.math.ec.ECCurve

Methods inherited from class java.lang.Object

Field Detail

q

infinity

Constructor Detail

SecP256K1Curve

Method Detail

cloneCurve

supportsCoordinateSystem

getQ

getFieldSize

fromBigInteger

createRawPoint

createRawPoint

getInfinity

createCacheSafeLookupTable

randomFieldElement

randomFieldElementMult