1 files changed, 0 insertions, 179 deletions
diff --git a/src/org/bouncycastle/math/ec/ECCurve.java b/src/org/bouncycastle/math/ec/ECCurve.java
deleted file mode 100644
index ee7ddc3..0000000
--- a/src/org/bouncycastle/math/ec/ECCurve.java
+++ /dev/null
@@ -1,179 +0,0 @@
-package org.bouncycastle.math.ec;
-
-import java.math.BigInteger;
-
-/**
- * base class for an elliptic curve
- */
-public abstract class ECCurve
-{
-    ECFieldElement a, b;
-
-    public abstract int getFieldSize();
-
-    public abstract ECFieldElement fromBigInteger(BigInteger x);
-
-    public abstract ECPoint createPoint(BigInteger x, BigInteger y, boolean withCompression);
-
-    public abstract ECPoint decodePoint(byte[] encoded);
-
-    public abstract ECPoint getInfinity();
-
-    public ECFieldElement getA()
-    {
-        return a;
-    }
-
-    public ECFieldElement getB()
-    {
-        return b;
-    }
-
-    /**
-     * Elliptic curve over Fp
-     */
-    public static class Fp extends ECCurve
-    {
-        BigInteger q;
-        ECPoint.Fp infinity;
-
-        public Fp(BigInteger q, BigInteger a, BigInteger b)
-        {
-            this.q = q;
-            this.a = fromBigInteger(a);
-            this.b = fromBigInteger(b);
-            this.infinity = new ECPoint.Fp(this, null, null);
-        }
-
-        public BigInteger getQ()
-        {
-            return q;
-        }
-
-        @Override
-        public int getFieldSize()
-        {
-            return q.bitLength();
-        }
-
-        @Override
-        public ECFieldElement fromBigInteger(BigInteger x)
-        {
-            return new ECFieldElement.Fp(this.q, x);
-        }
-
-        @Override
-        public ECPoint createPoint(BigInteger x, BigInteger y, boolean withCompression)
-        {
-            return new ECPoint.Fp(this, fromBigInteger(x), fromBigInteger(y), withCompression);
-        }
-
-        /**
-         * Decode a point on this curve from its ASN.1 encoding. The different
-         * encodings are taken account of, including point compression for
-         * <code>F<sub>p</sub></code> (X9.62 s 4.2.1 pg 17).
-         * @return The decoded point.
-         */
-        @Override
-        public ECPoint decodePoint(byte[] encoded)
-        {
-            ECPoint p = null;
-
-            switch (encoded[0])
-            {
-                // infinity
-            case 0x00:
-                if (encoded.length > 1)
-                {
-                    throw new RuntimeException("Invalid point encoding");
-                }
-                p = getInfinity();
-                break;
-                // compressed
-            case 0x02:
-            case 0x03:
-                int ytilde = encoded[0] & 1;
-                byte[]  i = new byte[encoded.length - 1];
-
-                System.arraycopy(encoded, 1, i, 0, i.length);
-
-                ECFieldElement x = new ECFieldElement.Fp(this.q, new BigInteger(1, i));
-                ECFieldElement alpha = x.multiply(x.square().add(a)).add(b);
-                ECFieldElement beta = alpha.sqrt();
-
-                //
-                // if we can't find a sqrt we haven't got a point on the
-                // curve - run!
-                //
-                if (beta == null)
-                {
-                    throw new RuntimeException("Invalid point compression");
-                }
-
-                int bit0 = (beta.toBigInteger().testBit(0) ? 1 : 0);
-
-                if (bit0 == ytilde)
-                {
-                    p = new ECPoint.Fp(this, x, beta, true);
-                }
-                else
-                {
-                    p = new ECPoint.Fp(this, x,
-                        new ECFieldElement.Fp(this.q, q.subtract(beta.toBigInteger())), true);
-                }
-                break;
-                // uncompressed
-            case 0x04:
-                // hybrid
-            case 0x06:
-            case 0x07:
-                byte[]  xEnc = new byte[(encoded.length - 1) / 2];
-                byte[]  yEnc = new byte[(encoded.length - 1) / 2];
-
-                System.arraycopy(encoded, 1, xEnc, 0, xEnc.length);
-                System.arraycopy(encoded, xEnc.length + 1, yEnc, 0, yEnc.length);
-
-                p = new ECPoint.Fp(this,
-                        new ECFieldElement.Fp(this.q, new BigInteger(1, xEnc)),
-                        new ECFieldElement.Fp(this.q, new BigInteger(1, yEnc)));
-                break;
-            default:
-                throw new RuntimeException("Invalid point encoding 0x" + Integer.toString(encoded[0], 16));
-            }
-
-            return p;
-        }
-
-        @Override
-        public ECPoint getInfinity()
-        {
-            return infinity;
-        }
-
-        @Override
-        public boolean equals(
-            Object anObject)
-        {
-            if (anObject == this)
-            {
-                return true;
-            }
-
-            if (!(anObject instanceof ECCurve.Fp))
-            {
-                return false;
-            }
-
-            ECCurve.Fp other = (ECCurve.Fp) anObject;
-
-            return this.q.equals(other.q)
-                    && a.equals(other.a) && b.equals(other.b);
-        }
-
-        @Override
-        public int hashCode()
-        {
-            return a.hashCode() ^ b.hashCode() ^ q.hashCode();
-        }
-    }
-}