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| author | MITSUNARI Shigeo <herumi@nifty.com> | 2017-03-10 04:09:29 +0800 |
|---|---|---|
| committer | MITSUNARI Shigeo <herumi@nifty.com> | 2017-03-10 04:09:29 +0800 |
| commit | 27ae115c832770bc81d8de0b3f16e802a4f7b4d6 (patch) | |
| tree | c986ad5c91a6f35c1aaf9ed5bce826bf9b2d5d05 | |
| parent | 26221606e9c96887acd8a38532e95a5aea67de27 (diff) | |
| download | dexon-mcl-27ae115c832770bc81d8de0b3f16e802a4f7b4d6.tar.gz dexon-mcl-27ae115c832770bc81d8de0b3f16e802a4f7b4d6.tar.zst dexon-mcl-27ae115c832770bc81d8de0b3f16e802a4f7b4d6.zip | |
change type of CurveParam.z
| -rw-r--r-- | include/mcl/bn.hpp | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/include/mcl/bn.hpp b/include/mcl/bn.hpp index c2ce74a..8beaf75 100644 --- a/include/mcl/bn.hpp +++ b/include/mcl/bn.hpp @@ -20,7 +20,7 @@ struct CurveParam { v^3 = xi w^2 = v */ - int64_t z; + mpz_class z; int b; // y^2 = x^3 + b int xi_a; // xi = xi_a + i bool operator==(const CurveParam& rhs) const { return z == rhs.z && b == rhs.b && xi_a == rhs.xi_a; } @@ -239,15 +239,12 @@ struct ParamT { void init(const CurveParam& cp = CurveFp254BNb, fp::Mode mode = fp::FP_AUTO) { isCurveFp254BNb = cp == CurveFp254BNb; - { - uint64_t t = std::abs(cp.z); - isNegative = cp.z < 0; - gmp::setArray(abs_z, &t, 1); - if (isNegative) { - z = -abs_z; - } else { - z = abs_z; - } + z = cp.z; + isNegative = cp.z < 0; + if (isNegative) { + abs_z = -z; + } else { + abs_z = z; } const int pCoff[] = { 1, 6, 24, 36, 36 }; const int rCoff[] = { 1, 6, 18, 36, 36 }; |