1 files changed, 0 insertions, 91 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/ECMQVBasicAgreement.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/ECMQVBasicAgreement.java
deleted file mode 100644
index 9faa50068..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/ECMQVBasicAgreement.java
+++ /dev/null
@@ -1,91 +0,0 @@
-package org.spongycastle.crypto.agreement;
-
-import java.math.BigInteger;
-
-import org.spongycastle.crypto.BasicAgreement;
-import org.spongycastle.crypto.CipherParameters;
-import org.spongycastle.crypto.params.ECDomainParameters;
-import org.spongycastle.crypto.params.ECPrivateKeyParameters;
-import org.spongycastle.crypto.params.ECPublicKeyParameters;
-import org.spongycastle.crypto.params.MQVPrivateParameters;
-import org.spongycastle.crypto.params.MQVPublicParameters;
-import org.spongycastle.math.ec.ECAlgorithms;
-import org.spongycastle.math.ec.ECConstants;
-import org.spongycastle.math.ec.ECCurve;
-import org.spongycastle.math.ec.ECPoint;
-
-public class ECMQVBasicAgreement
-    implements BasicAgreement
-{
-    MQVPrivateParameters privParams;
-
-    public void init(
-        CipherParameters key)
-    {
-        this.privParams = (MQVPrivateParameters)key;
-    }
-
-    public int getFieldSize()
-    {
-        return (privParams.getStaticPrivateKey().getParameters().getCurve().getFieldSize() + 7) / 8;
-    }
-
-    public BigInteger calculateAgreement(CipherParameters pubKey)
-    {
-        MQVPublicParameters pubParams = (MQVPublicParameters)pubKey;
-
-        ECPrivateKeyParameters staticPrivateKey = privParams.getStaticPrivateKey();
-
-        ECPoint agreement = calculateMqvAgreement(staticPrivateKey.getParameters(), staticPrivateKey,
-            privParams.getEphemeralPrivateKey(), privParams.getEphemeralPublicKey(),
-            pubParams.getStaticPublicKey(), pubParams.getEphemeralPublicKey()).normalize();
-
-        if (agreement.isInfinity())
-        {
-            throw new IllegalStateException("Infinity is not a valid agreement value for MQV");
-        }
-
-        return agreement.getAffineXCoord().toBigInteger();
-    }
-
-    // The ECMQV Primitive as described in SEC-1, 3.4
-    private ECPoint calculateMqvAgreement(
-        ECDomainParameters      parameters,
-        ECPrivateKeyParameters  d1U,
-        ECPrivateKeyParameters  d2U,
-        ECPublicKeyParameters   Q2U,
-        ECPublicKeyParameters   Q1V,
-        ECPublicKeyParameters   Q2V)
-    {
-        BigInteger n = parameters.getN();
-        int e = (n.bitLength() + 1) / 2;
-        BigInteger powE = ECConstants.ONE.shiftLeft(e);
-
-        ECCurve curve = parameters.getCurve();
-
-        ECPoint[] points = new ECPoint[]{
-            // The Q2U public key is optional
-            ECAlgorithms.importPoint(curve, Q2U == null ? parameters.getG().multiply(d2U.getD()) : Q2U.getQ()),
-            ECAlgorithms.importPoint(curve, Q1V.getQ()),
-            ECAlgorithms.importPoint(curve, Q2V.getQ())
-        };
-
-        curve.normalizeAll(points);
-
-        ECPoint q2u = points[0], q1v = points[1], q2v = points[2];
-
-        BigInteger x = q2u.getAffineXCoord().toBigInteger();
-        BigInteger xBar = x.mod(powE);
-        BigInteger Q2UBar = xBar.setBit(e);
-        BigInteger s = d1U.getD().multiply(Q2UBar).add(d2U.getD()).mod(n);
-
-        BigInteger xPrime = q2v.getAffineXCoord().toBigInteger();
-        BigInteger xPrimeBar = xPrime.mod(powE);
-        BigInteger Q2VBar = xPrimeBar.setBit(e);
-
-        BigInteger hs = parameters.getH().multiply(s).mod(n);
-
-        return ECAlgorithms.sumOfTwoMultiplies(
-            q1v, Q2VBar.multiply(hs).mod(n), q2v, hs);
-    }
-}