diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs index bee322091..928461ec6 100644 --- a/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs @@ -133,32 +133,33 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec if (Nat256.IsZero(x1) || Nat256.IsOne(x1)) return this; + uint[] tt0 = Nat256.CreateExt(); uint[] t1 = Nat256.Create(); uint[] t2 = Nat256.Create(); - SecP256R1Field.Square(x1, t1); - SecP256R1Field.Multiply(t1, x1, t1); + SecP256R1Field.Square(x1, t1, tt0); + SecP256R1Field.Multiply(t1, x1, t1, tt0); - SecP256R1Field.SquareN(t1, 2, t2); - SecP256R1Field.Multiply(t2, t1, t2); + SecP256R1Field.SquareN(t1, 2, t2, tt0); + SecP256R1Field.Multiply(t2, t1, t2, tt0); - SecP256R1Field.SquareN(t2, 4, t1); - SecP256R1Field.Multiply(t1, t2, t1); + SecP256R1Field.SquareN(t2, 4, t1, tt0); + SecP256R1Field.Multiply(t1, t2, t1, tt0); - SecP256R1Field.SquareN(t1, 8, t2); - SecP256R1Field.Multiply(t2, t1, t2); + SecP256R1Field.SquareN(t1, 8, t2, tt0); + SecP256R1Field.Multiply(t2, t1, t2, tt0); - SecP256R1Field.SquareN(t2, 16, t1); - SecP256R1Field.Multiply(t1, t2, t1); + SecP256R1Field.SquareN(t2, 16, t1, tt0); + SecP256R1Field.Multiply(t1, t2, t1, tt0); - SecP256R1Field.SquareN(t1, 32, t1); - SecP256R1Field.Multiply(t1, x1, t1); + SecP256R1Field.SquareN(t1, 32, t1, tt0); + SecP256R1Field.Multiply(t1, x1, t1, tt0); - SecP256R1Field.SquareN(t1, 96, t1); - SecP256R1Field.Multiply(t1, x1, t1); + SecP256R1Field.SquareN(t1, 96, t1, tt0); + SecP256R1Field.Multiply(t1, x1, t1, tt0); - SecP256R1Field.SquareN(t1, 94, t1); - SecP256R1Field.Multiply(t1, t1, t2); + SecP256R1Field.SquareN(t1, 94, t1, tt0); + SecP256R1Field.Multiply(t1, t1, t2, tt0); return Nat256.Eq(x1, t2) ? new SecP256R1FieldElement(t1) : null; } |