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package cz.crcs.ectester.reader.test;
import cz.crcs.ectester.applet.ECTesterApplet;
import cz.crcs.ectester.applet.EC_Consts;
import cz.crcs.ectester.common.ec.EC_Curve;
import cz.crcs.ectester.common.ec.EC_Key;
import cz.crcs.ectester.common.output.TestWriter;
import cz.crcs.ectester.common.test.CompoundTest;
import cz.crcs.ectester.common.test.Test;
import cz.crcs.ectester.data.EC_Store;
import cz.crcs.ectester.reader.CardMngr;
import cz.crcs.ectester.reader.ECTesterReader;
import cz.crcs.ectester.reader.command.Command;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Random;
import static cz.crcs.ectester.common.test.Result.ExpectedValue;
/**
* @author Jan Jancar johny@neuromancer.sk
*/
public class CardCofactorSuite extends CardTestSuite {
public CardCofactorSuite(TestWriter writer, ECTesterReader.Config cfg, CardMngr cardManager) {
super(writer, cfg, cardManager, "cofactor", "The cofactor test suite tests whether the card correctly rejects points on the curve but not in the subgroup generated by the generator during ECDH.");
}
@Override
protected void runTests() throws Exception {
Map<String, EC_Key.Public> pubkeys = EC_Store.getInstance().getObjects(EC_Key.Public.class, "cofactor");
List<Map.Entry<EC_Curve, List<EC_Key.Public>>> curveList = EC_Store.mapKeyToCurve(pubkeys.values());
for (Map.Entry<EC_Curve, List<EC_Key.Public>> e : curveList) {
EC_Curve curve = e.getKey();
List<EC_Key.Public> keys = e.getValue();
Test allocate = CommandTest.expect(new Command.Allocate(this.card, ECTesterApplet.KEYPAIR_BOTH, curve.getBits(), curve.getField()), ExpectedValue.SUCCESS);
Test set = CommandTest.expect(new Command.Set(this.card, ECTesterApplet.KEYPAIR_BOTH, EC_Consts.CURVE_external, curve.getParams(), curve.flatten()), ExpectedValue.SUCCESS);
Test generate = CommandTest.expect(new Command.Generate(this.card, ECTesterApplet.KEYPAIR_LOCAL), ExpectedValue.SUCCESS);
Test prepare = CompoundTest.all(ExpectedValue.SUCCESS, "Prepare and generate keypair on " + curve.getId() + ".", allocate, set, generate);
List<Test> ecdhTests = new LinkedList<>();
for (EC_Key.Public pub : keys) {
Command ecdhCommand = new Command.ECDH_direct(this.card, ECTesterApplet.KEYPAIR_LOCAL, ECTesterApplet.EXPORT_FALSE, EC_Consts.TRANSFORMATION_NONE, EC_Consts.KeyAgreement_ALG_EC_SVDP_DH, pub.flatten());
ecdhTests.add(CommandTest.expect(ecdhCommand, ExpectedValue.FAILURE, "Card correctly rejected point on non-generator subgroup.", "Card incorrectly accepted point on non-generator subgroup."));
}
Test ecdh = CompoundTest.all(ExpectedValue.SUCCESS, "Perform ECDH with public points on non-generator subgroup.", ecdhTests.toArray(new Test[0]));
Random r = new Random();
byte[] raw = new byte[128];
byte[] sig = new byte[40];
r.nextBytes(raw);
r.nextBytes(sig);
List<Test> ecdsaTests = new LinkedList<>();
for (EC_Key.Public pub : keys) {
Command setCommand = new Command.Set(this.card, ECTesterApplet.KEYPAIR_REMOTE, EC_Consts.CURVE_external, pub.getParams(), pub.flatten());
Test setTest = CommandTest.expect(setCommand, ExpectedValue.ANY);
Command ecdsaCommand = new Command.ECDSA_verify(this.card, ECTesterApplet.KEYPAIR_REMOTE, EC_Consts.Signature_ALG_ECDSA_SHA, raw, sig);
Test ecdsaTest = CommandTest.expect(ecdsaCommand, ExpectedValue.FAILURE);
ecdsaTests.add(CompoundTest.all(ExpectedValue.SUCCESS, "Verify random ECDSA signature by " + pub.getId() + ".", setTest, ecdsaTest));
}
Test ecdsa = CompoundTest.all(ExpectedValue.SUCCESS, "Verify random ECDSA signature by public points on non-generator subgroup.", ecdsaTests.toArray(new Test[0]));
Test tests = CompoundTest.all(ExpectedValue.SUCCESS, "Perform ECDH and ECDSA tests.", ecdh, ecdsa);
if (cfg.cleanup) {
Test cleanup = CommandTest.expect(new Command.Cleanup(this.card), ExpectedValue.SUCCESS);
doTest(CompoundTest.greedyAllTry(ExpectedValue.SUCCESS, "Cofactor test of " + curve.getId() + ".", prepare, tests, cleanup));
} else {
doTest(CompoundTest.greedyAllTry(ExpectedValue.SUCCESS, "Cofactor test of " + curve.getId() + ".", prepare, tests));
}
}
}
}
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