insecurecurveexception.java

java写的椭圆曲线加密(ECC)算法源码

package ecc.elliptic;

import java.math.BigInteger;

public class InsecureCurveException extends Exception{

    public static final int NONPRIMEMODULUS = -1;
    public static final int SINGULAR = 0;
    public static final int SUPERSINGULAR = 1;
    public static final int ANOMALOUS = 2;
    public static final int TRACEONE = 3;

    private int error;

    private EllipticCurve sender;

    public InsecureCurveException(EllipticCurve sender){
	error = SINGULAR;
	this.sender = sender;
    }

    public InsecureCurveException(int e, EllipticCurve sender){
	error = e;
	this.sender = sender;
    }
    public int getError(){
	return error;
    }

    public String getErrorString(){
	if (error == SINGULAR) return "SINGULAR";
	else if (error == NONPRIMEMODULUS) return "NONPRIMEMODULUS"; 
	else if (error == SUPERSINGULAR) return "SUPERSINGULAR"; 
	else if (error == ANOMALOUS) return "ANOMALOUS"; 
	else if (error == TRACEONE) return "TRACEONE"; 
	else return "UNKNOWN ERROR"; 
    }

    public EllipticCurve getSender(){
	return sender;
    }
}