1 files changed, 0 insertions, 48 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/ec/ECElGamalDecryptor.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/ec/ECElGamalDecryptor.java
deleted file mode 100644
index 31bd6381c..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/ec/ECElGamalDecryptor.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package org.spongycastle.crypto.ec;
-
-import org.spongycastle.crypto.CipherParameters;
-import org.spongycastle.crypto.params.ECPrivateKeyParameters;
-import org.spongycastle.math.ec.ECPoint;
-
-/**
- * this does your basic decryption ElGamal style using EC
- */
-public class ECElGamalDecryptor
-    implements ECDecryptor
-{
-    private ECPrivateKeyParameters key;
-
-    /**
-     * initialise the decryptor.
-     *
-     * @param param the necessary EC key parameters.
-     */
-    public void init(
-        CipherParameters param)
-    {
-        if (!(param instanceof ECPrivateKeyParameters))
-        {
-            throw new IllegalArgumentException("ECPrivateKeyParameters are required for decryption.");
-        }
-
-        this.key = (ECPrivateKeyParameters)param;
-    }
-
-    /**
-     * Decrypt an EC pair producing the original EC point.
-     *
-     * @param pair the EC point pair to process.
-     * @return the result of the Elgamal process.
-     */
-    public ECPoint decrypt(ECPair pair)
-    {
-        if (key == null)
-        {
-            throw new IllegalStateException("ECElGamalDecryptor not initialised");
-        }
-
-        ECPoint tmp = pair.getX().multiply(key.getD());
-
-        return pair.getY().add(tmp.negate()).normalize();
-    }
-}