1 files changed, 0 insertions, 171 deletions
diff --git a/crypto/src/math/ec/custom/djb/Curve25519.cs b/crypto/src/math/ec/custom/djb/Curve25519.cs
deleted file mode 100644
index 380be7252..000000000
--- a/crypto/src/math/ec/custom/djb/Curve25519.cs
+++ /dev/null
@@ -1,171 +0,0 @@
-using System;
-
-using Org.BouncyCastle.Math.Raw;
-using Org.BouncyCastle.Security;
-using Org.BouncyCastle.Utilities.Encoders;
-
-namespace Org.BouncyCastle.Math.EC.Custom.Djb
-{
-    internal class Curve25519
-        : AbstractFpCurve
-    {
-        public static readonly BigInteger q = Curve25519FieldElement.Q;
-
-        private static readonly BigInteger C_a = new BigInteger(1, Hex.DecodeStrict("2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA984914A144"));
-        private static readonly BigInteger C_b = new BigInteger(1, Hex.DecodeStrict("7B425ED097B425ED097B425ED097B425ED097B425ED097B4260B5E9C7710C864"));
-
-        private const int CURVE25519_DEFAULT_COORDS = COORD_JACOBIAN_MODIFIED;
-        private const int CURVE25519_FE_INTS = 8;
-        private static readonly ECFieldElement[] CURVE25519_AFFINE_ZS = new ECFieldElement[] {
-            new Curve25519FieldElement(BigInteger.One), new Curve25519FieldElement(C_a) }; 
-        protected readonly Curve25519Point m_infinity;
-
-        public Curve25519()
-            : base(q)
-        {
-            this.m_infinity = new Curve25519Point(this, null, null);
-
-            this.m_a = FromBigInteger(C_a);
-            this.m_b = FromBigInteger(C_b);
-            this.m_order = new BigInteger(1, Hex.DecodeStrict("1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED"));
-            this.m_cofactor = BigInteger.ValueOf(8);
-            this.m_coord = CURVE25519_DEFAULT_COORDS;
-        }
-
-        protected override ECCurve CloneCurve()
-        {
-            return new Curve25519();
-        }
-
-        public override bool SupportsCoordinateSystem(int coord)
-        {
-            switch (coord)
-            {
-            case COORD_JACOBIAN_MODIFIED:
-                return true;
-            default:
-                return false;
-            }
-        }
-
-        public virtual BigInteger Q
-        {
-            get { return q; }
-        }
-
-        public override ECPoint Infinity
-        {
-            get { return m_infinity; }
-        }
-
-        public override int FieldSize
-        {
-            get { return q.BitLength; }
-        }
-
-        public override ECFieldElement FromBigInteger(BigInteger x)
-        {
-            return new Curve25519FieldElement(x);
-        }
-
-        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
-        {
-            return new Curve25519Point(this, x, y);
-        }
-
-        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
-        {
-            return new Curve25519Point(this, x, y, zs);
-        }
-
-        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
-        {
-            uint[] table = new uint[len * CURVE25519_FE_INTS * 2];
-            {
-                int pos = 0;
-                for (int i = 0; i < len; ++i)
-                {
-                    ECPoint p = points[off + i];
-                    Nat256.Copy(((Curve25519FieldElement)p.RawXCoord).x, 0, table, pos); pos += CURVE25519_FE_INTS;
-                    Nat256.Copy(((Curve25519FieldElement)p.RawYCoord).x, 0, table, pos); pos += CURVE25519_FE_INTS;
-                }
-            }
-
-            return new Curve25519LookupTable(this, table, len);
-        }
-
-        public override ECFieldElement RandomFieldElement(SecureRandom r)
-        {
-            uint[] x = Nat256.Create();
-            Curve25519Field.Random(r, x);
-            return new Curve25519FieldElement(x);
-        }
-
-        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
-        {
-            uint[] x = Nat256.Create();
-            Curve25519Field.RandomMult(r, x);
-            return new Curve25519FieldElement(x);
-        }
-
-        private class Curve25519LookupTable
-            : AbstractECLookupTable
-        {
-            private readonly Curve25519 m_outer;
-            private readonly uint[] m_table;
-            private readonly int m_size;
-
-            internal Curve25519LookupTable(Curve25519 outer, uint[] table, int size)
-            {
-                this.m_outer = outer;
-                this.m_table = table;
-                this.m_size = size;
-            }
-
-            public override int Size
-            {
-                get { return m_size; }
-            }
-
-            public override ECPoint Lookup(int index)
-            {
-                uint[] x = Nat256.Create(), y = Nat256.Create();
-                int pos = 0;
-
-                for (int i = 0; i < m_size; ++i)
-                {
-                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
-
-                    for (int j = 0; j < CURVE25519_FE_INTS; ++j)
-                    {
-                        x[j] ^= m_table[pos + j] & MASK;
-                        y[j] ^= m_table[pos + CURVE25519_FE_INTS + j] & MASK;
-                    }
-
-                    pos += (CURVE25519_FE_INTS * 2);
-                }
-
-                return CreatePoint(x, y);
-            }
-
-            public override ECPoint LookupVar(int index)
-            {
-                uint[] x = Nat256.Create(), y = Nat256.Create();
-                int pos = index * CURVE25519_FE_INTS * 2;
-
-                for (int j = 0; j < CURVE25519_FE_INTS; ++j)
-                {
-                    x[j] = m_table[pos + j];
-                    y[j] = m_table[pos + CURVE25519_FE_INTS + j];
-                }
-
-                return CreatePoint(x, y);
-            }
-
-            private ECPoint CreatePoint(uint[] x, uint[] y)
-            {
-                return m_outer.CreateRawPoint(new Curve25519FieldElement(x), new Curve25519FieldElement(y), CURVE25519_AFFINE_ZS);
-            }
-        }
-    }
-}