File	Doc	Category	Size	Date	Package
ECParameterSpec.java	API Doc	Android 1.5 API	4074	Wed May 06 22:41:06 BST 2009	java.security.spec

ECParameterSpec

• java.lang.Object

Fields Summary
private final EllipticCurve	curve
private final ECPoint	generator
private final BigInteger	order
private final int	cofactor

Constructors Summary

public ECParameterSpec(EllipticCurve curve, ECPoint generator, BigInteger order, int cofactor) Creates a new {@code ECParameterSpec} with the specified elliptic curve, the base point, the order of the generator (or base point) and the co-factor. param curve the elliptic curve. param generator the generator (or base point). param order the order of the generator. param cofactor the co-factor. throws IllegalArgumentException if {@code order <= zero} or {@code cofactor <= zero}. since Android 1.0 this.curve = curve; this.generator = generator; this.order = order; this.cofactor = cofactor; // throw NullPointerException if curve, generator or order is null if (this.curve == null) { throw new NullPointerException(Messages.getString("security.83", "curve")); //$NON-NLS-1$ //$NON-NLS-2$ } if (this.generator == null) { throw new NullPointerException(Messages.getString("security.83", "generator")); //$NON-NLS-1$ //$NON-NLS-2$ } if (this.order == null) { throw new NullPointerException(Messages.getString("security.83", "order")); //$NON-NLS-1$ //$NON-NLS-2$ } // throw IllegalArgumentException if order or cofactor is not positive if (!(this.order.compareTo(BigInteger.ZERO) > 0)) { throw new IllegalArgumentException(Messages.getString("security.86", "order")); //$NON-NLS-1$ //$NON-NLS-2$ } if (!(this.cofactor > 0)) { throw new IllegalArgumentException(Messages.getString("security.86", "cofactor")); //$NON-NLS-1$ //$NON-NLS-2$ }

Methods Summary
public int	getCofactor() Returns the {@code cofactor}. return the {@code cofactor}. since Android 1.0 return cofactor;
public java.security.spec.EllipticCurve	getCurve() Returns the elliptic curve. return the elliptic curve. since Android 1.0 return curve;
public java.security.spec.ECPoint	getGenerator() Returns the generator (or base point). return the generator (or base point). since Android 1.0 return generator;
public java.math.BigInteger	getOrder() Returns the order of the generator. return the order of the generator. since Android 1.0 return order;