diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs | 58 |
1 files changed, 30 insertions, 28 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs index d2ff05cb7..2bb83d5e9 100644 --- a/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs @@ -141,49 +141,51 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec if (Nat256.IsZero(x1) || Nat256.IsOne(x1)) return this; + uint[] tt0 = Nat256.CreateExt(); + uint[] x2 = Nat256.Create(); - SecP256K1Field.Square(x1, x2); - SecP256K1Field.Multiply(x2, x1, x2); + SecP256K1Field.Square(x1, x2, tt0); + SecP256K1Field.Multiply(x2, x1, x2, tt0); uint[] x3 = Nat256.Create(); - SecP256K1Field.Square(x2, x3); - SecP256K1Field.Multiply(x3, x1, x3); + SecP256K1Field.Square(x2, x3, tt0); + SecP256K1Field.Multiply(x3, x1, x3, tt0); uint[] x6 = Nat256.Create(); - SecP256K1Field.SquareN(x3, 3, x6); - SecP256K1Field.Multiply(x6, x3, x6); + SecP256K1Field.SquareN(x3, 3, x6, tt0); + SecP256K1Field.Multiply(x6, x3, x6, tt0); uint[] x9 = x6; - SecP256K1Field.SquareN(x6, 3, x9); - SecP256K1Field.Multiply(x9, x3, x9); + SecP256K1Field.SquareN(x6, 3, x9, tt0); + SecP256K1Field.Multiply(x9, x3, x9, tt0); uint[] x11 = x9; - SecP256K1Field.SquareN(x9, 2, x11); - SecP256K1Field.Multiply(x11, x2, x11); + SecP256K1Field.SquareN(x9, 2, x11, tt0); + SecP256K1Field.Multiply(x11, x2, x11, tt0); uint[] x22 = Nat256.Create(); - SecP256K1Field.SquareN(x11, 11, x22); - SecP256K1Field.Multiply(x22, x11, x22); + SecP256K1Field.SquareN(x11, 11, x22, tt0); + SecP256K1Field.Multiply(x22, x11, x22, tt0); uint[] x44 = x11; - SecP256K1Field.SquareN(x22, 22, x44); - SecP256K1Field.Multiply(x44, x22, x44); + SecP256K1Field.SquareN(x22, 22, x44, tt0); + SecP256K1Field.Multiply(x44, x22, x44, tt0); uint[] x88 = Nat256.Create(); - SecP256K1Field.SquareN(x44, 44, x88); - SecP256K1Field.Multiply(x88, x44, x88); + SecP256K1Field.SquareN(x44, 44, x88, tt0); + SecP256K1Field.Multiply(x88, x44, x88, tt0); uint[] x176 = Nat256.Create(); - SecP256K1Field.SquareN(x88, 88, x176); - SecP256K1Field.Multiply(x176, x88, x176); + SecP256K1Field.SquareN(x88, 88, x176, tt0); + SecP256K1Field.Multiply(x176, x88, x176, tt0); uint[] x220 = x88; - SecP256K1Field.SquareN(x176, 44, x220); - SecP256K1Field.Multiply(x220, x44, x220); + SecP256K1Field.SquareN(x176, 44, x220, tt0); + SecP256K1Field.Multiply(x220, x44, x220, tt0); uint[] x223 = x44; - SecP256K1Field.SquareN(x220, 3, x223); - SecP256K1Field.Multiply(x223, x3, x223); + SecP256K1Field.SquareN(x220, 3, x223, tt0); + SecP256K1Field.Multiply(x223, x3, x223, tt0); uint[] t1 = x223; - SecP256K1Field.SquareN(t1, 23, t1); - SecP256K1Field.Multiply(t1, x22, t1); - SecP256K1Field.SquareN(t1, 6, t1); - SecP256K1Field.Multiply(t1, x2, t1); - SecP256K1Field.SquareN(t1, 2, t1); + SecP256K1Field.SquareN(t1, 23, t1, tt0); + SecP256K1Field.Multiply(t1, x22, t1, tt0); + SecP256K1Field.SquareN(t1, 6, t1, tt0); + SecP256K1Field.Multiply(t1, x2, t1, tt0); + SecP256K1Field.SquareN(t1, 2, t1, tt0); uint[] t2 = x2; - SecP256K1Field.Square(t1, t2); + SecP256K1Field.Square(t1, t2, tt0); return Nat256.Eq(x1, t2) ? new SecP256K1FieldElement(t1) : null; } |