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- #if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
- using System;
- using Org.BouncyCastle.Math.Raw;
- using Org.BouncyCastle.Utilities.Encoders;
- namespace Org.BouncyCastle.Math.EC.Custom.Djb
- {
- internal class Curve25519
- : AbstractFpCurve
- {
- public static readonly BigInteger q = Nat256.ToBigInteger(Curve25519Field.P);
- private const int Curve25519_DEFAULT_COORDS = COORD_JACOBIAN_MODIFIED;
- protected readonly Curve25519Point m_infinity;
- public Curve25519()
- : base(q)
- {
- this.m_infinity = new Curve25519Point(this, null, null);
- this.m_a = FromBigInteger(new BigInteger(1,
- Hex.Decode("2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA984914A144")));
- this.m_b = FromBigInteger(new BigInteger(1,
- Hex.Decode("7B425ED097B425ED097B425ED097B425ED097B425ED097B4260B5E9C7710C864")));
- this.m_order = new BigInteger(1, Hex.Decode("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, bool withCompression)
- {
- return new Curve25519Point(this, x, y, withCompression);
- }
- protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, bool withCompression)
- {
- return new Curve25519Point(this, x, y, zs, withCompression);
- }
- }
- }
- #endif
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