1 files changed, 0 insertions, 163 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/signers/DSADigestSigner.java b/core/src/main/java/org/bouncycastle/crypto/signers/DSADigestSigner.java
deleted file mode 100644
index 684eb9c0..00000000
--- a/core/src/main/java/org/bouncycastle/crypto/signers/DSADigestSigner.java
+++ /dev/null
@@ -1,163 +0,0 @@
-package org.bouncycastle.crypto.signers;
-
-import java.io.IOException;
-import java.math.BigInteger;
-
-import org.bouncycastle.asn1.ASN1EncodableVector;
-import org.bouncycastle.asn1.ASN1Encoding;
-import org.bouncycastle.asn1.ASN1Integer;
-import org.bouncycastle.asn1.ASN1Primitive;
-import org.bouncycastle.asn1.ASN1Sequence;
-import org.bouncycastle.asn1.DERSequence;
-import org.bouncycastle.crypto.CipherParameters;
-import org.bouncycastle.crypto.DSA;
-import org.bouncycastle.crypto.Digest;
-import org.bouncycastle.crypto.Signer;
-import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
-import org.bouncycastle.crypto.params.ParametersWithRandom;
-
-public class DSADigestSigner
-    implements Signer
-{
-    private final Digest digest;
-    private final DSA dsaSigner;
-    private boolean forSigning;
-
-    public DSADigestSigner(
-        DSA    signer,
-        Digest digest)
-    {
-        this.digest = digest;
-        this.dsaSigner = signer;
-    }
-
-    public void init(
-        boolean           forSigning,
-        CipherParameters   parameters)
-    {
-        this.forSigning = forSigning;
-
-        AsymmetricKeyParameter k;
-
-        if (parameters instanceof ParametersWithRandom)
-        {
-            k = (AsymmetricKeyParameter)((ParametersWithRandom)parameters).getParameters();
-        }
-        else
-        {
-            k = (AsymmetricKeyParameter)parameters;
-        }
-
-        if (forSigning && !k.isPrivate())
-        {
-            throw new IllegalArgumentException("Signing Requires Private Key.");
-        }
-
-        if (!forSigning && k.isPrivate())
-        {
-            throw new IllegalArgumentException("Verification Requires Public Key.");
-        }
-
-        reset();
-
-        dsaSigner.init(forSigning, parameters);
-    }
-
-    /**
-     * update the internal digest with the byte b
-     */
-    public void update(
-        byte input)
-    {
-        digest.update(input);
-    }
-
-    /**
-     * update the internal digest with the byte array in
-     */
-    public void update(
-        byte[]  input,
-        int     inOff,
-        int     length)
-    {
-        digest.update(input, inOff, length);
-    }
-
-    /**
-     * Generate a signature for the message we've been loaded with using
-     * the key we were initialised with.
-     */
-    public byte[] generateSignature()
-    {
-        if (!forSigning)
-        {
-            throw new IllegalStateException("DSADigestSigner not initialised for signature generation.");
-        }
-
-        byte[] hash = new byte[digest.getDigestSize()];
-        digest.doFinal(hash, 0);
-
-        BigInteger[] sig = dsaSigner.generateSignature(hash);
-
-        try
-        {
-            return derEncode(sig[0], sig[1]);
-        }
-        catch (IOException e)
-        {
-            throw new IllegalStateException("unable to encode signature");
-        }
-    }
-
-    public boolean verifySignature(
-        byte[] signature)
-    {
-        if (forSigning)
-        {
-            throw new IllegalStateException("DSADigestSigner not initialised for verification");
-        }
-
-        byte[] hash = new byte[digest.getDigestSize()];
-        digest.doFinal(hash, 0);
-
-        try
-        {
-            BigInteger[] sig = derDecode(signature);
-            return dsaSigner.verifySignature(hash, sig[0], sig[1]);
-        }
-        catch (IOException e)
-        {
-            return false;
-        }
-    }
-
-    public void reset()
-    {
-        digest.reset();
-    }
-
-    private byte[] derEncode(
-        BigInteger  r,
-        BigInteger  s)
-        throws IOException
-    {
-        ASN1EncodableVector v = new ASN1EncodableVector();
-        v.add(new ASN1Integer(r));
-        v.add(new ASN1Integer(s));
-
-        return new DERSequence(v).getEncoded(ASN1Encoding.DER);
-    }
-
-    private BigInteger[] derDecode(
-        byte[] encoding)
-        throws IOException
-    {
-        ASN1Sequence s = (ASN1Sequence)ASN1Primitive.fromByteArray(encoding);
-
-        return new BigInteger[]
-        {
-            ((ASN1Integer)s.getObjectAt(0)).getValue(),
-            ((ASN1Integer)s.getObjectAt(1)).getValue()
-        };
-    }
-}