Java example source code file (ECCBasic.java)
The ECCBasic.java Java example source code/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/**
* @test
* @bug 4794996
* @summary Ensure basic functionality of these new ECC classes.
* @author Valerie Peng
*/
import java.math.BigInteger;
import java.util.Arrays;
import java.security.*;
import java.security.spec.*;
public class ECCBasic {
private static final BigInteger ZERO = BigInteger.ZERO;
private static final BigInteger ONE = BigInteger.ONE;
private static final BigInteger TEN = BigInteger.TEN;
private static final ECFieldFp FP = new ECFieldFp(TEN);
private static final int F2M_M = 4;
private static final int[] F2M_KS;
static {
F2M_KS = new int[1];
F2M_KS[0] = 1;
}
private static final BigInteger F2M_RP = BigInteger.valueOf(19);
private static final ECFieldF2m F2M = new ECFieldF2m(F2M_M, F2M_KS);
private static final EllipticCurve CURVE = new EllipticCurve
(new ECFieldFp(TEN), ONE, ONE);
private static final ECPoint POINT = new ECPoint(ONE, TEN);
private static final BigInteger ORDER = ONE;
private static final int COFACTOR = 3;
private static final ECParameterSpec PARAMS = new ECParameterSpec
(CURVE, POINT, ORDER, COFACTOR);
private static final ECGenParameterSpec GENPARAMS =
new ECGenParameterSpec("prime192v1");
private static final ECPrivateKeySpec PRIV_KEY = new ECPrivateKeySpec
(TEN, PARAMS);
private static final ECPublicKeySpec PUB_KEY = new ECPublicKeySpec
(POINT, PARAMS);
private static void testECFieldFp() throws Exception {
System.out.println("Testing ECFieldFp(BigInteger)");
try {
new ECFieldFp(ZERO);
throw new Exception("...should throw IAE");
} catch (IllegalArgumentException iae) {
System.out.println("...expected IAE thrown");
}
try {
new ECFieldFp(null);
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
if (TEN.equals(FP.getP()) == false) {
throw new Exception("...error in getP()");
}
if (FP.getFieldSize() != TEN.bitLength()) {
throw new Exception("...error in getFieldSize()");
}
}
private static void testECFieldF2m() throws Exception {
// invalid parameters
int mBad = 0;
int[] ksBad;
for (int i=0; i<7; i++) {
System.out.print("Testing ECFieldF2m");
try {
switch (i) {
case 0:
System.out.println("(int)");
new ECFieldF2m(mBad);
break;
case 1:
System.out.println("(int, BigInteger)#1");
new ECFieldF2m(mBad, F2M_RP);
break;
case 2:
System.out.println("(int, BigInteger)#2");
new ECFieldF2m(mBad, F2M_RP);
break;
case 3:
System.out.println("(int, int[])#1");
new ECFieldF2m(mBad, F2M_KS);
break;
case 4:
ksBad = new int[2];
System.out.println("(int, int[])#2");
new ECFieldF2m(F2M_M, ksBad);
break;
case 5:
ksBad = new int[1];
ksBad[0] = 5;
System.out.println("(int, int[])#3");
new ECFieldF2m(F2M_M, ksBad);
break;
case 6:
ksBad = new int[3];
ksBad[0] = 1;
ksBad[1] = 2;
ksBad[2] = 3;
System.out.println("(int, int[])#4");
new ECFieldF2m(F2M_M, ksBad);
break;
}
throw new Exception("...should throw IAE");
} catch (IllegalArgumentException iae) {
System.out.println("...expected IAE thrown");
}
}
for (int i=0; i<2; i++) {
System.out.print("Testing ECFieldF2m");
try {
switch (i) {
case 0:
System.out.println("(int, BigInteger)");
new ECFieldF2m(F2M_M, (BigInteger) null);
break;
case 1:
System.out.println("(int, int[])#1");
new ECFieldF2m(F2M_M, (int[]) null);
break;
}
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
}
if (F2M_RP.compareTo(F2M.getReductionPolynomial()) != 0) {
throw new Exception("...error in getReductionPolynomial()");
}
ECFieldF2m field = new ECFieldF2m(F2M_M, F2M_RP);
if (!(Arrays.equals(F2M_KS,
field.getMidTermsOfReductionPolynomial()))) {
throw new Exception("...error in getMidTermsOfReductionPolynomial()");
}
if (field.getFieldSize() != F2M_M) {
throw new Exception("...error in getFieldSize()");
}
}
private static void testECParameterSpec() throws Exception {
System.out.println("Testing ECParameterSpec(...)");
for (int i = 0; i < 2; i++) {
try {
switch (i) {
case 0:
System.out.println("with zero order");
new ECParameterSpec(CURVE, POINT, ZERO, COFACTOR);
break;
case 1:
System.out.println("with negative cofactor");
new ECParameterSpec(CURVE, POINT, ORDER, -1);
break;
}
throw new Exception("...should throw IAE");
} catch (IllegalArgumentException iae) {
System.out.println("...expected IAE thrown");
}
}
for (int i = 0; i < 3; i++) {
try {
switch (i) {
case 0:
System.out.println("with null curve");
new ECParameterSpec(null, POINT, ORDER, COFACTOR);
break;
case 1:
System.out.println("with null generator");
new ECParameterSpec(CURVE, null, ORDER, COFACTOR);
break;
case 2:
System.out.println("with null order");
new ECParameterSpec(CURVE, POINT, null, COFACTOR);
break;
}
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
}
if (!(CURVE.equals(PARAMS.getCurve()))) {
throw new Exception("...error in getCurve()");
}
if (!(POINT.equals(PARAMS.getGenerator()))) {
throw new Exception("...error in getGenerator()");
}
if (!(ORDER.equals(PARAMS.getOrder()))) {
throw new Exception("...error in getOrder()");
}
if (COFACTOR != PARAMS.getCofactor()) {
throw new Exception("...error in getCofactor()");
}
}
private static void testECGenParameterSpec() throws Exception {
System.out.println("Testing ECGenParameterSpec(String)");
try {
new ECGenParameterSpec(null);
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
if (!("prime192v1".equals(GENPARAMS.getName()))) {
throw new Exception("...error in getName()");
}
}
private static void testECPoint() throws Exception {
System.out.println("Testing ECParameterSpec(...)");
for (int i = 0; i < 2; i++) {
try {
switch (i) {
case 0:
System.out.println("with null x-coordinate");
new ECPoint(null, TEN);
break;
case 1:
System.out.println("with null y-coordinate");
new ECPoint(ONE, null);
break;
}
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
}
if (!(ONE.equals(POINT.getAffineX()))) {
throw new Exception("...error in getAffineX()");
}
if (!(TEN.equals(POINT.getAffineY()))) {
throw new Exception("...error in getAffineY()");
}
}
private static void testECPublicKeySpec() throws Exception {
System.out.println("Testing ECPublicKeySpec(...)");
for (int i = 0; i < 2; i++) {
try {
switch (i) {
case 0:
System.out.println("with null public value");
new ECPublicKeySpec(null, PARAMS);
break;
case 1:
System.out.println("with null params");
new ECPublicKeySpec(POINT, null);
break;
}
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
}
if (!(POINT.equals(PUB_KEY.getW()))) {
throw new Exception("...error in getW()");
}
if (!(PARAMS.equals(PUB_KEY.getParams()))) {
throw new Exception("...error in getParams()");
}
}
private static void testECPrivateKeySpec() throws Exception {
System.out.println("Testing ECPrivateKeySpec(...)");
for (int i = 0; i < 2; i++) {
try {
switch (i) {
case 0:
System.out.println("with null private value");
new ECPrivateKeySpec(null, PARAMS);
break;
case 1:
System.out.println("with null param");
new ECPrivateKeySpec(ONE, null);
break;
}
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
}
if (!(TEN.equals(PRIV_KEY.getS()))) {
throw new Exception("...error in getS()");
}
if (!(PARAMS.equals(PRIV_KEY.getParams()))) {
throw new Exception("...error in getParams()");
}
}
private static void testEllipticCurve() throws Exception {
System.out.println("Testing EllipticCurve(...)");
for (int j = 0; j < 2; j++) {
BigInteger a = ONE;
BigInteger b = ONE;
if (j == 0) { // test a out of range
System.out.println("with a's value out of range");
a = BigInteger.valueOf(20);
} else { // test b out of range
System.out.println("with b's value out of range");
b = BigInteger.valueOf(20);
}
System.out.println(">> over ECFieldFp");
for (int i = 0; i < 3; i++) {
try {
switch (i) {
case 0:
new EllipticCurve(FP, a, b);
break;
case 1:
new EllipticCurve(FP, a, b, null);
break;
case 2:
new EllipticCurve(FP, a, b, new byte[8]);
break;
}
throw new Exception("...should throw IAE");
} catch (IllegalArgumentException iae) {
System.out.println("...expected IAE thrown for #" + (i+1));
}
}
System.out.println(">> over ECFieldF2m");
for (int i = 0; i < 3; i++) {
try {
switch (i) {
case 0:
new EllipticCurve(F2M, a, b);
break;
case 1:
new EllipticCurve(F2M, a, b, null);
break;
case 2:
new EllipticCurve(F2M, a, b, new byte[8]);
break;
}
throw new Exception("...should throw IAE");
} catch (IllegalArgumentException iae) {
System.out.println("...expected IAE thrown for #" + (i+1));
}
}
}
for (int i = 0; i < 6; i++) {
try {
switch (i) {
case 0:
new EllipticCurve(null, ONE, TEN);
break;
case 1:
new EllipticCurve(FP, null, TEN);
break;
case 2:
new EllipticCurve(FP, ONE, null);
break;
case 3:
new EllipticCurve(null, ONE, TEN, null);
break;
case 4:
new EllipticCurve(FP, null, TEN, null);
break;
case 5:
new EllipticCurve(FP, ONE, null, null);
break;
}
throw new Exception("...should throw NPE");
} catch (NullPointerException npe) {
System.out.println("...expected NPE thrown");
}
}
if (!(FP.equals(CURVE.getField()))) {
throw new Exception("...error in getField()");
}
if (!(ONE.equals(CURVE.getA()))) {
throw new Exception("...error in getA()");
}
if (!(ONE.equals(CURVE.getB()))) {
throw new Exception("...error in getB()");
}
if (!(CURVE.equals(new EllipticCurve(FP, ONE, ONE, null)))) {
throw new Exception("...error in equals()");
}
}
private static void testAllHashCode() throws Exception {
// make sure no unexpected exception when hashCode() is called.
FP.hashCode();
F2M.hashCode();
GENPARAMS.hashCode();
PARAMS.hashCode();
POINT.hashCode();
PRIV_KEY.hashCode();
PUB_KEY.hashCode();
CURVE.hashCode();
}
public static void main(String[] argv) throws Exception {
testECFieldFp();
testECFieldF2m();
testECParameterSpec();
testECGenParameterSpec();
testECPoint();
testECPrivateKeySpec();
testECPublicKeySpec();
testEllipticCurve();
testAllHashCode();
System.out.println("All Test Passed");
}
}
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