SecP384R1FieldElement
using Org.BouncyCastle.Math.Raw;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Encoders;
using System;
namespace Org.BouncyCastle.Math.EC.Custom.Sec
{
internal class SecP384R1FieldElement : AbstractFpFieldElement
{
public static readonly BigInteger Q = new BigInteger(1, Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF"));
protected internal readonly uint[] x;
public override bool IsZero => Nat.IsZero(12, x);
public override bool IsOne => Nat.IsOne(12, x);
public override string FieldName => "SecP384R1Field";
public override int FieldSize => Q.BitLength;
public SecP384R1FieldElement(BigInteger x)
{
if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
throw new ArgumentException("value invalid for SecP384R1FieldElement", "x");
this.x = SecP384R1Field.FromBigInteger(x);
}
public SecP384R1FieldElement()
{
x = Nat.Create(12);
}
protected internal SecP384R1FieldElement(uint[] x)
{
this.x = x;
}
public override bool TestBitZero()
{
return Nat.GetBit(x, 0) == 1;
}
public override BigInteger ToBigInteger()
{
return Nat.ToBigInteger(12, x);
}
public override ECFieldElement Add(ECFieldElement b)
{
uint[] z = Nat.Create(12);
SecP384R1Field.Add(x, ((SecP384R1FieldElement)b).x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement AddOne()
{
uint[] z = Nat.Create(12);
SecP384R1Field.AddOne(x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Subtract(ECFieldElement b)
{
uint[] z = Nat.Create(12);
SecP384R1Field.Subtract(x, ((SecP384R1FieldElement)b).x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Multiply(ECFieldElement b)
{
uint[] z = Nat.Create(12);
SecP384R1Field.Multiply(x, ((SecP384R1FieldElement)b).x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Divide(ECFieldElement b)
{
uint[] z = Nat.Create(12);
SecP384R1Field.Inv(((SecP384R1FieldElement)b).x, z);
SecP384R1Field.Multiply(z, x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Negate()
{
uint[] z = Nat.Create(12);
SecP384R1Field.Negate(x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Square()
{
uint[] z = Nat.Create(12);
SecP384R1Field.Square(x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Invert()
{
uint[] z = Nat.Create(12);
SecP384R1Field.Inv(x, z);
return new SecP384R1FieldElement(z);
}
public override ECFieldElement Sqrt()
{
uint[] y = x;
if (Nat.IsZero(12, y) || Nat.IsOne(12, y))
return this;
uint[] tt = Nat.Create(24);
uint[] array = Nat.Create(12);
uint[] array2 = Nat.Create(12);
uint[] array3 = Nat.Create(12);
uint[] array4 = Nat.Create(12);
SecP384R1Field.Square(y, array, tt);
SecP384R1Field.Multiply(array, y, array, tt);
SecP384R1Field.SquareN(array, 2, array2, tt);
SecP384R1Field.Multiply(array2, array, array2, tt);
SecP384R1Field.Square(array2, array2, tt);
SecP384R1Field.Multiply(array2, y, array2, tt);
SecP384R1Field.SquareN(array2, 5, array3, tt);
SecP384R1Field.Multiply(array3, array2, array3, tt);
SecP384R1Field.SquareN(array3, 5, array4, tt);
SecP384R1Field.Multiply(array4, array2, array4, tt);
SecP384R1Field.SquareN(array4, 15, array2, tt);
SecP384R1Field.Multiply(array2, array4, array2, tt);
SecP384R1Field.SquareN(array2, 2, array3, tt);
SecP384R1Field.Multiply(array, array3, array, tt);
SecP384R1Field.SquareN(array3, 28, array3, tt);
SecP384R1Field.Multiply(array2, array3, array2, tt);
SecP384R1Field.SquareN(array2, 60, array3, tt);
SecP384R1Field.Multiply(array3, array2, array3, tt);
uint[] z = array2;
SecP384R1Field.SquareN(array3, 120, z, tt);
SecP384R1Field.Multiply(z, array3, z, tt);
SecP384R1Field.SquareN(z, 15, z, tt);
SecP384R1Field.Multiply(z, array4, z, tt);
SecP384R1Field.SquareN(z, 33, z, tt);
SecP384R1Field.Multiply(z, array, z, tt);
SecP384R1Field.SquareN(z, 64, z, tt);
SecP384R1Field.Multiply(z, y, z, tt);
SecP384R1Field.SquareN(z, 30, array, tt);
SecP384R1Field.Square(array, array2, tt);
if (!Nat.Eq(12, y, array2))
return null;
return new SecP384R1FieldElement(array);
}
public override bool Equals(object obj)
{
return Equals(obj as SecP384R1FieldElement);
}
public override bool Equals(ECFieldElement other)
{
return Equals(other as SecP384R1FieldElement);
}
public virtual bool Equals(SecP384R1FieldElement other)
{
if (this == other)
return true;
if (other == null)
return false;
return Nat.Eq(12, x, other.x);
}
public override int GetHashCode()
{
return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 12);
}
}
}