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Test that our elliptic curve is equal to the named curve; benchmarks.

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This commit is contained in:
akwizgran
2014-03-27 10:31:07 +00:00
parent 8310f00848
commit 0100d62a20
2 changed files with 155 additions and 12 deletions
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28
briar-tests/src/org/briarproject/crypto/EllipticCurveMultiplicationTest.java
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@@ -1,21 +1,18 @@
package org.briarproject.crypto;
import static org.briarproject.crypto.EllipticCurveConstants.A;
import static org.briarproject.crypto.EllipticCurveConstants.B;
import static org.briarproject.crypto.EllipticCurveConstants.CURVE;
import static org.briarproject.crypto.EllipticCurveConstants.G;
import static org.briarproject.crypto.EllipticCurveConstants.H;
import static org.briarproject.crypto.EllipticCurveConstants.P;
import static org.briarproject.crypto.EllipticCurveConstants.PARAMETERS;
import static org.briarproject.crypto.EllipticCurveConstants.Q;
import static org.briarproject.crypto.EllipticCurveConstants.X;
import static org.briarproject.crypto.EllipticCurveConstants.Y;
import java.math.BigInteger;
import java.security.SecureRandom;
import org.briarproject.BriarTestCase;
import org.junit.Test;
import org.spongycastle.asn1.teletrust.TeleTrusTNamedCurves;
import org.spongycastle.asn1.x9.X9ECParameters;
import org.spongycastle.crypto.AsymmetricCipherKeyPair;
import org.spongycastle.crypto.agreement.ECDHCBasicAgreement;
import org.spongycastle.crypto.generators.ECKeyPairGenerator;
@@ -30,17 +27,24 @@ public class EllipticCurveMultiplicationTest extends BriarTestCase {
@Test
public void testMultiplierProducesSameResultsAsDefault() throws Exception {
// Construct a curve and base point using the default multiplier
ECCurve defaultCurve = new ECCurve.Fp(P, A, B);
ECPoint defaultG = defaultCurve.createPoint(X, Y);
// Check that the curve and base point are equal to those constructed
// using the Montgomery ladder multiplier
// Instantiate the built-in implementation of the curve, which uses
// the default multiplier
X9ECParameters defaultX9Parameters =
TeleTrusTNamedCurves.getByName("brainpoolp384r1");
ECCurve defaultCurve = defaultX9Parameters.getCurve();
ECPoint defaultG = defaultX9Parameters.getG();
BigInteger defaultQ = defaultX9Parameters.getN();
BigInteger defaultH = defaultX9Parameters.getH();
// Check that the built-in parameters are equal to our parameters,
// which use the Montgomery ladder multiplier
assertEquals(CURVE, defaultCurve);
assertEquals(G, defaultG);
assertEquals(Q, defaultQ);
assertEquals(H, defaultH);
// ECDomainParameters doesn't have an equals() method, but it's just a
// container for the parameters
ECDomainParameters defaultParameters =
new ECDomainParameters(defaultCurve, defaultG, Q, H);
ECDomainParameters defaultParameters = new ECDomainParameters(
defaultCurve, defaultG, defaultQ, defaultH);
// Generate two key pairs with each set of parameters, using the same
// deterministic PRNG for both sets of parameters
byte[] seed = new byte[32];