45 lines
1.2 KiB
C#
45 lines
1.2 KiB
C#
using System;
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namespace Org.BouncyCastle.Math.EC;
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public abstract class ECPointBase : ECPoint
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{
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protected internal ECPointBase(ECCurve curve, ECFieldElement x, ECFieldElement y, bool withCompression)
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: base(curve, x, y, withCompression)
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{
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}
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protected internal ECPointBase(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, bool withCompression)
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: base(curve, x, y, zs, withCompression)
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{
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}
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public override byte[] GetEncoded(bool compressed)
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{
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if (base.IsInfinity)
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{
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return new byte[1];
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}
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ECPoint eCPoint = Normalize();
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byte[] encoded = eCPoint.XCoord.GetEncoded();
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if (compressed)
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{
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byte[] array = new byte[encoded.Length + 1];
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array[0] = (byte)(eCPoint.CompressionYTilde ? 3u : 2u);
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Array.Copy(encoded, 0, array, 1, encoded.Length);
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return array;
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}
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byte[] encoded2 = eCPoint.YCoord.GetEncoded();
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byte[] array2 = new byte[encoded.Length + encoded2.Length + 1];
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array2[0] = 4;
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Array.Copy(encoded, 0, array2, 1, encoded.Length);
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Array.Copy(encoded2, 0, array2, encoded.Length + 1, encoded2.Length);
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return array2;
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}
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public override ECPoint Multiply(BigInteger k)
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{
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return Curve.GetMultiplier().Multiply(this, k);
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}
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}
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