82 lines
2.4 KiB
C#
82 lines
2.4 KiB
C#
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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using System;
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using Org.BouncyCastle.Math.Raw;
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using Org.BouncyCastle.Utilities.Encoders;
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namespace Org.BouncyCastle.Math.EC.Custom.Djb
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{
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internal class Curve25519
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: AbstractFpCurve
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{
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public static readonly BigInteger q = Nat256.ToBigInteger(Curve25519Field.P);
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private const int Curve25519_DEFAULT_COORDS = COORD_JACOBIAN_MODIFIED;
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protected readonly Curve25519Point m_infinity;
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public Curve25519()
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: base(q)
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{
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this.m_infinity = new Curve25519Point(this, null, null);
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this.m_a = FromBigInteger(new BigInteger(1,
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Hex.Decode("2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA984914A144")));
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this.m_b = FromBigInteger(new BigInteger(1,
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Hex.Decode("7B425ED097B425ED097B425ED097B425ED097B425ED097B4260B5E9C7710C864")));
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this.m_order = new BigInteger(1, Hex.Decode("1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED"));
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this.m_cofactor = BigInteger.ValueOf(8);
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this.m_coord = Curve25519_DEFAULT_COORDS;
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}
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protected override ECCurve CloneCurve()
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{
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return new Curve25519();
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}
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public override bool SupportsCoordinateSystem(int coord)
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{
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switch (coord)
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{
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case COORD_JACOBIAN_MODIFIED:
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return true;
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default:
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return false;
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}
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}
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public virtual BigInteger Q
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{
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get { return q; }
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}
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public override ECPoint Infinity
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{
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get { return m_infinity; }
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}
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public override int FieldSize
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{
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get { return q.BitLength; }
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}
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public override ECFieldElement FromBigInteger(BigInteger x)
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{
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return new Curve25519FieldElement(x);
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}
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protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, bool withCompression)
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{
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return new Curve25519Point(this, x, y, withCompression);
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}
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protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, bool withCompression)
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{
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return new Curve25519Point(this, x, y, zs, withCompression);
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}
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}
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}
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#endif
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