Package org.bouncycastle.math.ec

Class ECCurve.Fp

java.lang.Object

org.bouncycastle.math.ec.ECCurve

org.bouncycastle.math.ec.ECCurve.Fp

Enclosing class:

ECCurve

public static class ECCurve.Fp
extends ECCurve

Elliptic curve over Fp

Nested Class Summary

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

ECCurve.F2m, ECCurve.Fp

Constructor Summary

Constructors

Constructor	Description
Fp(BigInteger q, BigInteger a, BigInteger b)

Method Summary

Modifier and Type	Method	Description
ECPoint	createPoint(BigInteger x, BigInteger y, boolean withCompression)
protected ECPoint	decompressPoint(int yTilde, BigInteger X1)
boolean	equals(Object anObject)	Compares this instance with the specified object and indicates if they are equal.
ECFieldElement	fromBigInteger(BigInteger x)
int	getFieldSize()
ECPoint	getInfinity()
BigInteger	getQ()
int	hashCode()	Returns an integer hash code for this object.

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

decodePoint, getA, getB

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Fp

public Fp(BigInteger q,
BigInteger a,
BigInteger b)

Method Details

getQ

public BigInteger getQ()

getFieldSize

public int getFieldSize()

Specified by:

getFieldSize in class ECCurve

fromBigInteger

public ECFieldElement fromBigInteger(BigInteger x)

Specified by:

fromBigInteger in class ECCurve

createPoint

public ECPoint createPoint(BigInteger x,
BigInteger y,
boolean withCompression)

Specified by:

createPoint in class ECCurve

decompressPoint

protected ECPoint decompressPoint(int yTilde,
BigInteger X1)

Specified by:

decompressPoint in class ECCurve

getInfinity

public ECPoint getInfinity()

Specified by:

getInfinity in class ECCurve

equals

public boolean equals(Object anObject)

Description copied from class: Object

Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.

The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.

The general contract for the equals and Object.hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.

Overrides:

equals in class Object

Parameters:

anObject - the object to compare this instance with.

Returns:

true if the specified object is equal to this Object; false otherwise.

See Also:

Object.hashCode()

hashCode

public int hashCode()

Description copied from class: Object

Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Overrides:

hashCode in class Object

Returns:

this object's hash code.

See Also:

Object.equals(java.lang.Object)