1 files changed, 0 insertions, 131 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/kdf/DHKEKGenerator.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/kdf/DHKEKGenerator.java
deleted file mode 100644
index 6d27a9db7..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/kdf/DHKEKGenerator.java
+++ /dev/null
@@ -1,131 +0,0 @@
-package org.spongycastle.crypto.agreement.kdf;
-
-import java.io.IOException;
-
-import org.spongycastle.asn1.ASN1EncodableVector;
-import org.spongycastle.asn1.ASN1Encoding;
-import org.spongycastle.asn1.DERObjectIdentifier;
-import org.spongycastle.asn1.DEROctetString;
-import org.spongycastle.asn1.DERSequence;
-import org.spongycastle.asn1.DERTaggedObject;
-import org.spongycastle.crypto.DataLengthException;
-import org.spongycastle.crypto.DerivationFunction;
-import org.spongycastle.crypto.DerivationParameters;
-import org.spongycastle.crypto.Digest;
-import org.spongycastle.crypto.util.Pack;
-
-/**
- * RFC 2631 Diffie-hellman KEK derivation function.
- */
-public class DHKEKGenerator
-    implements DerivationFunction
-{
-    private final Digest digest;
-
-    private DERObjectIdentifier algorithm;
-    private int                 keySize;
-    private byte[]              z;
-    private byte[]              partyAInfo;
-
-    public DHKEKGenerator(
-        Digest digest)
-    {
-        this.digest = digest;
-    }
-
-    public void init(DerivationParameters param)
-    {
-        DHKDFParameters params = (DHKDFParameters)param;
-
-        this.algorithm = params.getAlgorithm();
-        this.keySize = params.getKeySize();
-        this.z = params.getZ();
-        this.partyAInfo = params.getExtraInfo();
-    }
-
-    public Digest getDigest()
-    {
-        return digest;
-    }
-
-    public int generateBytes(byte[] out, int outOff, int len)
-        throws DataLengthException, IllegalArgumentException
-    {
-        if ((out.length - len) < outOff)
-        {
-            throw new DataLengthException("output buffer too small");
-        }
-
-        long    oBytes = len;
-        int     outLen = digest.getDigestSize();
-
-        //
-        // this is at odds with the standard implementation, the
-        // maximum value should be hBits * (2^32 - 1) where hBits
-        // is the digest output size in bits. We can't have an
-        // array with a long index at the moment...
-        //
-        if (oBytes > ((2L << 32) - 1))
-        {
-            throw new IllegalArgumentException("Output length too large");
-        }
-
-        int cThreshold = (int)((oBytes + outLen - 1) / outLen);
-
-        byte[] dig = new byte[digest.getDigestSize()];
-
-        int counter = 1;
-
-        for (int i = 0; i < cThreshold; i++)
-        {
-            digest.update(z, 0, z.length);
-
-            // OtherInfo
-            ASN1EncodableVector v1 = new ASN1EncodableVector();
-            // KeySpecificInfo
-            ASN1EncodableVector v2 = new ASN1EncodableVector();
-
-            v2.add(algorithm);
-            v2.add(new DEROctetString(Pack.intToBigEndian(counter)));
-
-            v1.add(new DERSequence(v2));
-
-            if (partyAInfo != null)
-            {
-                v1.add(new DERTaggedObject(true, 0, new DEROctetString(partyAInfo)));
-            }
-
-            v1.add(new DERTaggedObject(true, 2, new DEROctetString(Pack.intToBigEndian(keySize))));
-
-            try
-            {
-                byte[] other = new DERSequence(v1).getEncoded(ASN1Encoding.DER);
-
-                digest.update(other, 0, other.length);
-            }
-            catch (IOException e)
-            {
-                throw new IllegalArgumentException("unable to encode parameter info: " + e.getMessage());
-            }
-
-            digest.doFinal(dig, 0);
-
-            if (len > outLen)
-            {
-                System.arraycopy(dig, 0, out, outOff, outLen);
-                outOff += outLen;
-                len -= outLen;
-            }
-            else
-            {
-                System.arraycopy(dig, 0, out, outOff, len);
-            }
-
-            counter++;
-        }
-
-        digest.reset();
-
-        return (int)oBytes;
-    }
-}