diff --git a/crypto/src/math/ec/custom/sec/Nat256.cs b/crypto/src/math/ec/custom/sec/Nat256.cs
index 4e3741886..c846f56fb 100644
--- a/crypto/src/math/ec/custom/sec/Nat256.cs
+++ b/crypto/src/math/ec/custom/sec/Nat256.cs
@@ -628,46 +628,44 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
return (uint)zc;
}
- public static ulong Mul33AddExt(uint w, uint[] xx, int xxOff, uint[] yy, int yyOff, uint[] zz, int zzOff)
+ public static ulong Mul33Add(uint w, uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff)
{
Debug.Assert(w >> 31 == 0);
- Debug.Assert(xxOff <= 8);
- Debug.Assert(yyOff <= 8);
- Debug.Assert(zzOff <= 8);
+
ulong c = 0, wVal = w;
- ulong xx00 = xx[xxOff + 0];
- c += wVal * xx00 + yy[yyOff + 0];
- zz[zzOff + 0] = (uint)c;
+ ulong x0 = x[xOff + 0];
+ c += wVal * x0 + y[yOff + 0];
+ z[zOff + 0] = (uint)c;
c >>= 32;
- ulong xx01 = xx[xxOff + 1];
- c += wVal * xx01 + xx00 + yy[yyOff + 1];
- zz[zzOff + 1] = (uint)c;
+ ulong x1 = x[xOff + 1];
+ c += wVal * x1 + x0 + y[yOff + 1];
+ z[zOff + 1] = (uint)c;
c >>= 32;
- ulong xx02 = xx[xxOff + 2];
- c += wVal * xx02 + xx01 + yy[yyOff + 2];
- zz[zzOff + 2] = (uint)c;
+ ulong x2 = x[xOff + 2];
+ c += wVal * x2 + x1 + y[yOff + 2];
+ z[zOff + 2] = (uint)c;
c >>= 32;
- ulong xx03 = xx[xxOff + 3];
- c += wVal * xx03 + xx02 + yy[yyOff + 3];
- zz[zzOff + 3] = (uint)c;
+ ulong x3 = x[xOff + 3];
+ c += wVal * x3 + x2 + y[yOff + 3];
+ z[zOff + 3] = (uint)c;
c >>= 32;
- ulong xx04 = xx[xxOff + 4];
- c += wVal * xx04 + xx03 + yy[yyOff + 4];
- zz[zzOff + 4] = (uint)c;
+ ulong x4 = x[xOff + 4];
+ c += wVal * x4 + x3 + y[yOff + 4];
+ z[zOff + 4] = (uint)c;
c >>= 32;
- ulong xx05 = xx[xxOff + 5];
- c += wVal * xx05 + xx04 + yy[yyOff + 5];
- zz[zzOff + 5] = (uint)c;
+ ulong x5 = x[xOff + 5];
+ c += wVal * x5 + x4 + y[yOff + 5];
+ z[zOff + 5] = (uint)c;
c >>= 32;
- ulong xx06 = xx[xxOff + 6];
- c += wVal * xx06 + xx05 + yy[yyOff + 6];
- zz[zzOff + 6] = (uint)c;
+ ulong x6 = x[xOff + 6];
+ c += wVal * x6 + x5 + y[yOff + 6];
+ z[zOff + 6] = (uint)c;
c >>= 32;
- ulong xx07 = xx[xxOff + 7];
- c += wVal * xx07 + xx06 + yy[yyOff + 7];
- zz[zzOff + 7] = (uint)c;
+ ulong x7 = x[xOff + 7];
+ c += wVal * x7 + x6 + y[yOff + 7];
+ z[zOff + 7] = (uint)c;
c >>= 32;
- c += xx07;
+ c += x7;
return c;
}
@@ -799,15 +797,14 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
return c == 0 ? 0 : Inc(z, zOff + 3);
}
- public static uint MulWordExt(uint x, uint[] y, uint[] zz, int zzOff)
+ public static uint MulWord(uint x, uint[] y, uint[] z, int zOff)
{
- Debug.Assert(zzOff <= 8);
ulong c = 0, xVal = x;
int i = 0;
do
{
c += xVal * y[i];
- zz[zzOff + i] = (uint)c;
+ z[zOff + i] = (uint)c;
c >>= 32;
}
while (++i < 8);
@@ -1168,21 +1165,6 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
ShiftUpBit(zz, zzOff, 16, (uint)x_0 << 31);
}
- public static uint SquareWordAddExt(uint[] x, int xPos, uint[] zz)
- {
- Debug.Assert(xPos > 0 && xPos < 8);
- ulong c = 0, xVal = x[xPos];
- int i = 0;
- do
- {
- c += xVal * x[i] + zz[xPos + i];
- zz[xPos + i] = (uint)c;
- c >>= 32;
- }
- while (++i < xPos);
- return (uint)c;
- }
-
public static int Sub(uint[] x, uint[] y, uint[] z)
{
long c = 0;
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