secp160r1.java

//package ecc.elliptic;

// cub(y) = sqr(x) + ax + b mod p

import java.math.BigInteger;
public class secp160r1 implements ECParameters {
    private static final BigInteger p 
	= new BigInteger("FFFFFFFF"+"FFFFFFFF"+"FFFFFFFF"+"FFFFFFFF"+"7FFFFFFF", 16);
    
    private static final BigInteger a 
	= new BigInteger("FFFFFFFF"+"FFFFFFFF"+"FFFFFFFF"+"FFFFFFFF"+"7FFFFFFC", 16);
    
    private static final BigInteger b 
	= new BigInteger("1C97BEFC"+"54BD7A8B"+"65ACF89F"+"81D4D4AD"+"C565FA45", 16);
    
    private static final BigInteger S 
  	= new BigInteger("1053CDE4"+"2C14D696"+"E6768756"+"1517533B"+"F3F83345", 16);
  
    private static final BigInteger gx
	= new BigInteger("4A96B568"+"8EF57328"+"46646989"+"68C38BB9"+"13CBFC82", 16);

    private static final BigInteger gy
    	= new BigInteger("23A62855"+"3168947D"+"59DCC912"+"04235137"+"7AC5FB32", 16);

    private static final BigInteger n
  	= new BigInteger("01"+"00000000"+"00000000"+"0001F4C8"+"F927AED3"+"CA752257", 16);
  
    public BigInteger a() {
	return a;
    }

    public BigInteger b() {
	return b;
    }

    public BigInteger p() {
	return p;
    }

    public BigInteger generatorX() {
	return gx;
    }

    public BigInteger generatorY() {
	return gy;
    }

    public BigInteger order() {
	return n;
    }

    public String toString(){
	return "secp160r1";
    }

    public static void main(String[] args) {
	System.out.println("a:  "+a);
	System.out.println("b:  "+b);
	System.out.println("p:  "+p);
	System.out.println("gx: "+gx);
	System.out.println("gy: "+gy);
	System.out.println("n:  "+n);
	System.out.println("p.toByteArray().length: "+p.toByteArray().length);
    }
}