diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecP256K1Point.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecP256K1Point.cs | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecP256K1Point.cs b/crypto/src/math/ec/custom/sec/SecP256K1Point.cs index d981911a6..d8e1eb83a 100644 --- a/crypto/src/math/ec/custom/sec/SecP256K1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP256K1Point.cs @@ -205,12 +205,11 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec uint[] S = Y1Squared; SecP256K1Field.Multiply(Y1Squared, X1.x, S); - SecP256K1Field.Twice(S, S); - SecP256K1Field.Twice(S, S); + uint c = Nat.ShiftUpBits(8, S, 2, 0); + SecP256K1Field.Reduce32(c, S); - SecP256K1Field.Twice(T, t1); - SecP256K1Field.Twice(t1, t1); - SecP256K1Field.Twice(t1, t1); + c = Nat.ShiftUpBits(8, T, 3, 0, t1); + SecP256K1Field.Reduce32(c, t1); SecP256K1FieldElement X3 = new SecP256K1FieldElement(T); SecP256K1Field.Square(M, X3.x); |