EllipticCurve (Commons core 1.4 API)

java.lang.Object
- cn.ponfee.commons.jce.implementation.ecc.EllipticCurve

```
public class EllipticCurve
extends Object
```
An implementation of an elliptic curve over a finite field.

作者:

Ponfee

字段概要

字段
限定符和类型字段和说明

static BigInteger COEFA

static BigInteger COEFB

static BigInteger THREE

static BigInteger TWO

字段
限定符和类型	字段和说明
`static BigInteger`	`COEFA`
`static BigInteger`	`COEFB`
`static BigInteger`	`THREE`
`static BigInteger`	`TWO`

构造器概要

构造器
构造器和说明
`EllipticCurve(BigInteger a, BigInteger b, BigInteger p)` Constructs an elliptic curve over the finite field of 'mod' elements.
`EllipticCurve(DataInputStream input)`
`EllipticCurve(ECParameters ecp)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`boolean`	`equals(Object obj)`
`BigInteger`	`getA()`
`BigInteger`	`getB()`
`ECPoint`	`getBasePointG()`
`BigInteger`	`getN()`
`BigInteger`	`getP()`
`int`	`getPCS()`
`BigInteger`	`getPSR2()`
`ECPoint`	`getZero()`
`int`	`hashCode()`
`boolean`	`isOnCurve(ECPoint q)`
`String`	`toString()`
`void`	`writeCurve(DataOutputStream output)`

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

COEFA
```
public static final BigInteger COEFA
```

COEFB
```
public static final BigInteger COEFB
```

TWO
```
public static final BigInteger TWO
```

THREE
```
public static final BigInteger THREE
```

构造器详细资料
- EllipticCurve
```
public EllipticCurve(BigInteger a,
                     BigInteger b,
                     BigInteger p)
```
  Constructs an elliptic curve over the finite field of 'mod' elements. The equation of the curve is on the form : y^2 = x^3 + ax + b.
  
  参数:
  
  a - the value of 'a' where y^2 = x^3 + ax + b
  
  b - the value of 'b' where y^2 = x^3 + ax + b
  
  p - the elliptic curve point in finite field
- EllipticCurve
```
public EllipticCurve(ECParameters ecp)
```
- EllipticCurve
```
public EllipticCurve(DataInputStream input)
              throws IOException
```
  抛出:
  
  IOException

方法详细资料

writeCurve

public void writeCurve(DataOutputStream output)
                throws IOException

抛出:: IOException

isOnCurve
```
public boolean isOnCurve(ECPoint q)
```

getN
```
public BigInteger getN()
```

getZero
```
public ECPoint getZero()
```

getA
```
public BigInteger getA()
```

getB
```
public BigInteger getB()
```

getP
```
public BigInteger getP()
```

getPCS
```
public int getPCS()
```

getBasePointG
```
public ECPoint getBasePointG()
```

getPSR2
```
public BigInteger getPSR2()
```

toString
```
public String toString()
```
覆盖:

toString 在类中 Object

equals
```
public boolean equals(Object obj)
```
覆盖:

equals 在类中 Object

hashCode
```
public int hashCode()
```
覆盖:

hashCode 在类中 Object

类 EllipticCurve

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

COEFA

COEFB

TWO

THREE

构造器详细资料

EllipticCurve

EllipticCurve

EllipticCurve

方法详细资料

writeCurve

isOnCurve

getN

getZero

getA

getB

getP

getPCS

getBasePointG

getPSR2

toString

equals

hashCode