1 files changed, 0 insertions, 152 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/signers/HMacDSAKCalculator.java b/core/src/main/java/org/bouncycastle/crypto/signers/HMacDSAKCalculator.java
deleted file mode 100644
index db78d4a3..00000000
--- a/core/src/main/java/org/bouncycastle/crypto/signers/HMacDSAKCalculator.java
+++ /dev/null
@@ -1,152 +0,0 @@
-package org.bouncycastle.crypto.signers;
-
-import java.math.BigInteger;
-import java.security.SecureRandom;
-
-import org.bouncycastle.crypto.Digest;
-import org.bouncycastle.crypto.macs.HMac;
-import org.bouncycastle.crypto.params.KeyParameter;
-import org.bouncycastle.util.Arrays;
-import org.bouncycastle.util.BigIntegers;
-
-/**
- * A deterministic K calculator based on the algorithm in section 3.2 of RFC 6979.
- */
-public class HMacDSAKCalculator
-    implements DSAKCalculator
-{
-    private static final BigInteger ZERO = BigInteger.valueOf(0);
-
-    private final HMac hMac;
-    private final byte[] K;
-    private final byte[] V;
-
-    private BigInteger n;
-
-    /**
-     * Base constructor.
-     *
-     * @param digest digest to build the HMAC on.
-     */
-    public HMacDSAKCalculator(Digest digest)
-    {
-        this.hMac = new HMac(digest);
-        this.V = new byte[hMac.getMacSize()];
-        this.K = new byte[hMac.getMacSize()];
-    }
-
-    public boolean isDeterministic()
-    {
-        return true;
-    }
-
-    public void init(BigInteger n, SecureRandom random)
-    {
-        throw new IllegalStateException("Operation not supported");
-    }
-
-    public void init(BigInteger n, BigInteger d, byte[] message)
-    {
-        this.n = n;
-
-        Arrays.fill(V, (byte)0x01);
-        Arrays.fill(K, (byte)0);
-
-        byte[] x = new byte[(n.bitLength() + 7) / 8];
-        byte[] dVal = BigIntegers.asUnsignedByteArray(d);
-
-        System.arraycopy(dVal, 0, x, x.length - dVal.length, dVal.length);
-
-        byte[] m = new byte[(n.bitLength() + 7) / 8];
-
-        BigInteger mInt = bitsToInt(message);
-
-        if (mInt.compareTo(n) > 0)
-        {
-            mInt = mInt.subtract(n);
-        }
-
-        byte[] mVal = BigIntegers.asUnsignedByteArray(mInt);
-
-        System.arraycopy(mVal, 0, m, m.length - mVal.length, mVal.length);
-
-        hMac.init(new KeyParameter(K));
-
-        hMac.update(V, 0, V.length);
-        hMac.update((byte)0x00);
-        hMac.update(x, 0, x.length);
-        hMac.update(m, 0, m.length);
-
-        hMac.doFinal(K, 0);
-
-        hMac.init(new KeyParameter(K));
-
-        hMac.update(V, 0, V.length);
-
-        hMac.doFinal(V, 0);
-
-        hMac.update(V, 0, V.length);
-        hMac.update((byte)0x01);
-        hMac.update(x, 0, x.length);
-        hMac.update(m, 0, m.length);
-
-        hMac.doFinal(K, 0);
-
-        hMac.init(new KeyParameter(K));
-
-        hMac.update(V, 0, V.length);
-
-        hMac.doFinal(V, 0);
-    }
-
-    public BigInteger nextK()
-    {
-        byte[] t = new byte[((n.bitLength() + 7) / 8)];
-
-        for (;;)
-        {
-            int tOff = 0;
-
-            while (tOff < t.length)
-            {
-                hMac.update(V, 0, V.length);
-
-                hMac.doFinal(V, 0);
-
-                int len = Math.min(t.length - tOff, V.length);
-                System.arraycopy(V, 0, t, tOff, len);
-                tOff += len;
-            }
-
-            BigInteger k = bitsToInt(t);
-
-            if (k.compareTo(ZERO) > 0 && k.compareTo(n) < 0)
-            {
-                return k;
-            }
-
-            hMac.update(V, 0, V.length);
-            hMac.update((byte)0x00);
-
-            hMac.doFinal(K, 0);
-
-            hMac.init(new KeyParameter(K));
-
-            hMac.update(V, 0, V.length);
-
-            hMac.doFinal(V, 0);
-        }
-    }
-
-    private BigInteger bitsToInt(byte[] t)
-    {
-        BigInteger v = new BigInteger(1, t);
-
-        if (t.length * 8 > n.bitLength())
-        {
-            v = v.shiftRight(t.length * 8 - n.bitLength());
-        }
-
-        return v;
-    }
-}