SecT193FieldElement
using Org.BouncyCastle.Math.Raw;
using Org.BouncyCastle.Utilities;
using System;
namespace Org.BouncyCastle.Math.EC.Custom.Sec
{
internal class SecT193FieldElement : AbstractF2mFieldElement
{
protected internal readonly ulong[] x;
public override bool IsOne => Nat256.IsOne64(x);
public override bool IsZero => Nat256.IsZero64(x);
public override string FieldName => "SecT193Field";
public override int FieldSize => 193;
public override bool HasFastTrace => true;
public virtual int Representation => 2;
public virtual int M => 193;
public virtual int K1 => 15;
public virtual int K2 => 0;
public virtual int K3 => 0;
public SecT193FieldElement(BigInteger x)
{
if (x == null || x.SignValue < 0 || x.BitLength > 193)
throw new ArgumentException("value invalid for SecT193FieldElement", "x");
this.x = SecT193Field.FromBigInteger(x);
}
public SecT193FieldElement()
{
x = Nat256.Create64();
}
protected internal SecT193FieldElement(ulong[] x)
{
this.x = x;
}
public override bool TestBitZero()
{
return (x[0] & 1) != 0;
}
public override BigInteger ToBigInteger()
{
return Nat256.ToBigInteger64(x);
}
public override ECFieldElement Add(ECFieldElement b)
{
ulong[] z = Nat256.Create64();
SecT193Field.Add(x, ((SecT193FieldElement)b).x, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement AddOne()
{
ulong[] z = Nat256.Create64();
SecT193Field.AddOne(x, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement Subtract(ECFieldElement b)
{
return Add(b);
}
public override ECFieldElement Multiply(ECFieldElement b)
{
ulong[] z = Nat256.Create64();
SecT193Field.Multiply(x, ((SecT193FieldElement)b).x, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement MultiplyMinusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
{
return MultiplyPlusProduct(b, x, y);
}
public override ECFieldElement MultiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
{
ulong[] array = this.x;
ulong[] y2 = ((SecT193FieldElement)b).x;
ulong[] array2 = ((SecT193FieldElement)x).x;
ulong[] y3 = ((SecT193FieldElement)y).x;
ulong[] array3 = Nat256.CreateExt64();
SecT193Field.MultiplyAddToExt(array, y2, array3);
SecT193Field.MultiplyAddToExt(array2, y3, array3);
ulong[] z = Nat256.Create64();
SecT193Field.Reduce(array3, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement Divide(ECFieldElement b)
{
return Multiply(b.Invert());
}
public override ECFieldElement Negate()
{
return this;
}
public override ECFieldElement Square()
{
ulong[] z = Nat256.Create64();
SecT193Field.Square(x, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement SquareMinusProduct(ECFieldElement x, ECFieldElement y)
{
return SquarePlusProduct(x, y);
}
public override ECFieldElement SquarePlusProduct(ECFieldElement x, ECFieldElement y)
{
ulong[] array = this.x;
ulong[] array2 = ((SecT193FieldElement)x).x;
ulong[] y2 = ((SecT193FieldElement)y).x;
ulong[] array3 = Nat256.CreateExt64();
SecT193Field.SquareExt(array, array3);
SecT193Field.MultiplyAddToExt(array2, y2, array3);
ulong[] z = Nat256.Create64();
SecT193Field.Reduce(array3, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement SquarePow(int pow)
{
if (pow < 1)
return this;
ulong[] z = Nat256.Create64();
SecT193Field.SquareN(x, pow, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement HalfTrace()
{
ulong[] z = Nat256.Create64();
SecT193Field.HalfTrace(x, z);
return new SecT193FieldElement(z);
}
public override int Trace()
{
return (int)SecT193Field.Trace(x);
}
public override ECFieldElement Invert()
{
ulong[] z = Nat256.Create64();
SecT193Field.Invert(x, z);
return new SecT193FieldElement(z);
}
public override ECFieldElement Sqrt()
{
ulong[] z = Nat256.Create64();
SecT193Field.Sqrt(x, z);
return new SecT193FieldElement(z);
}
public override bool Equals(object obj)
{
return Equals(obj as SecT193FieldElement);
}
public override bool Equals(ECFieldElement other)
{
return Equals(other as SecT193FieldElement);
}
public virtual bool Equals(SecT193FieldElement other)
{
if (this == other)
return true;
if (other == null)
return false;
return Nat256.Eq64(x, other.x);
}
public override int GetHashCode()
{
return 1930015 ^ Arrays.GetHashCode(x, 0, 4);
}
}
}