org.bouncycastle.crypto.params

Class ECDomainParameters

java.lang.Object

org.bouncycastle.crypto.params.ECDomainParameters

All Implemented Interfaces:

org.bouncycastle.math.ec.ECConstants

public class ECDomainParameters
extends Object
implements org.bouncycastle.math.ec.ECConstants

Field Summary

Fields inherited from interface org.bouncycastle.math.ec.ECConstants

EIGHT, FOUR, ONE, THREE, TWO, ZERO

Constructor Summary

Constructors

Constructor and Description
ECDomainParameters(org.bouncycastle.math.ec.ECCurve curve, org.bouncycastle.math.ec.ECPoint G, com.joshvm.java.math.BigInteger n)
ECDomainParameters(org.bouncycastle.math.ec.ECCurve curve, org.bouncycastle.math.ec.ECPoint G, com.joshvm.java.math.BigInteger n, com.joshvm.java.math.BigInteger h)
ECDomainParameters(org.bouncycastle.math.ec.ECCurve curve, org.bouncycastle.math.ec.ECPoint G, com.joshvm.java.math.BigInteger n, com.joshvm.java.math.BigInteger h, byte[] seed)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
org.bouncycastle.math.ec.ECCurve	getCurve()
org.bouncycastle.math.ec.ECPoint	getG()
com.joshvm.java.math.BigInteger	getH()
com.joshvm.java.math.BigInteger	getHInv()
com.joshvm.java.math.BigInteger	getN()
byte[]	getSeed()
int	hashCode() Returns a hash code value for the object.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ECDomainParameters

public ECDomainParameters(org.bouncycastle.math.ec.ECCurve curve,
                  org.bouncycastle.math.ec.ECPoint G,
                  com.joshvm.java.math.BigInteger n)

ECDomainParameters

public ECDomainParameters(org.bouncycastle.math.ec.ECCurve curve,
                  org.bouncycastle.math.ec.ECPoint G,
                  com.joshvm.java.math.BigInteger n,
                  com.joshvm.java.math.BigInteger h)

ECDomainParameters

public ECDomainParameters(org.bouncycastle.math.ec.ECCurve curve,
                  org.bouncycastle.math.ec.ECPoint G,
                  com.joshvm.java.math.BigInteger n,
                  com.joshvm.java.math.BigInteger h,
                  byte[] seed)

Method Detail

getCurve

public org.bouncycastle.math.ec.ECCurve getCurve()

getG

public org.bouncycastle.math.ec.ECPoint getG()

getN

public com.joshvm.java.math.BigInteger getN()

getH

public com.joshvm.java.math.BigInteger getH()

getHInv

public com.joshvm.java.math.BigInteger getHInv()

getSeed

public byte[] getSeed()

equals

public boolean equals(Object obj)

Description copied from class: Object

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation:

• It is reflexive: for any reference value x, x.equals(x) should return true.
• It is symmetric: for any reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
• It is transitive: for any reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
• It is consistent: for any reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the object is modified.
• For any non-null reference value x, x.equals(null) should return false.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any reference values x and y, this method returns true if and only if x and y refer to the same object (x==y has the value true).

Overrides:

equals in class Object

Parameters:

obj - the reference object with which to compare.

Returns:

true if this object is the same as the obj argument; false otherwise.

See Also:

Boolean.hashCode(), Hashtable

hashCode

public int hashCode()

Description copied from class: Object

Returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable.

The general contract of hashCode is:

• Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
• If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
• It is not required that if two objects are unequal according to the Object.equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java^TM programming language.)

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

See Also:

Object.equals(java.lang.Object), Hashtable