36 lines
1.2 KiB
C#
36 lines
1.2 KiB
C#
namespace Org.BouncyCastle.Math.Raw;
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internal abstract class Nat512
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{
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public static void Mul(uint[] x, uint[] y, uint[] zz)
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{
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Nat256.Mul(x, y, zz);
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Nat256.Mul(x, 8, y, 8, zz, 16);
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uint num = Nat256.AddToEachOther(zz, 8, zz, 16);
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uint cIn = num + Nat256.AddTo(zz, 0, zz, 8, 0u);
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num += Nat256.AddTo(zz, 24, zz, 16, cIn);
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uint[] array = Nat256.Create();
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uint[] array2 = Nat256.Create();
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bool flag = Nat256.Diff(x, 8, x, 0, array, 0) != Nat256.Diff(y, 8, y, 0, array2, 0);
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uint[] array3 = Nat256.CreateExt();
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Nat256.Mul(array, array2, array3);
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num += (uint)(flag ? ((int)Nat.AddTo(16, array3, 0, zz, 8)) : Nat.SubFrom(16, array3, 0, zz, 8));
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Nat.AddWordAt(32, num, zz, 24);
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}
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public static void Square(uint[] x, uint[] zz)
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{
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Nat256.Square(x, zz);
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Nat256.Square(x, 8, zz, 16);
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uint num = Nat256.AddToEachOther(zz, 8, zz, 16);
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uint cIn = num + Nat256.AddTo(zz, 0, zz, 8, 0u);
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num += Nat256.AddTo(zz, 24, zz, 16, cIn);
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uint[] array = Nat256.Create();
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Nat256.Diff(x, 8, x, 0, array, 0);
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uint[] array2 = Nat256.CreateExt();
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Nat256.Square(array, array2);
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num += (uint)Nat.SubFrom(16, array2, 0, zz, 8);
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Nat.AddWordAt(32, num, zz, 24);
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}
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}
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