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| author | MITSUNARI Shigeo <herumi@nifty.com> | 2017-03-17 18:52:05 +0800 |
|---|---|---|
| committer | MITSUNARI Shigeo <herumi@nifty.com> | 2017-03-17 18:52:13 +0800 |
| commit | b0779efe006b54e91fb66b0e4cc4639718c6ea4f (patch) | |
| tree | db598f2bda8a0898476d1a3cbc51e336edd78cd3 /src | |
| parent | a3083341bd08426825bb9d7352b5235b9a974f00 (diff) | |
| download | dexon-bls-b0779efe006b54e91fb66b0e4cc4639718c6ea4f.tar.gz dexon-bls-b0779efe006b54e91fb66b0e4cc4639718c6ea4f.tar.zst dexon-bls-b0779efe006b54e91fb66b0e4cc4639718c6ea4f.zip | |
add constant time sign SecretKey::signCT
Diffstat (limited to 'src')
| -rw-r--r-- | src/bls.cpp | 7 | ||||
| -rw-r--r-- | src/bls_if.cpp | 4 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/bls.cpp b/src/bls.cpp index 8679ea5..6adc493 100644 --- a/src/bls.cpp +++ b/src/bls.cpp @@ -381,6 +381,13 @@ void SecretKey::sign(Sign& sign, const std::string& m) const HashAndMapToG1(Hm, m); G1::mul(sign.getInner().sHm, Hm, getInner().s); } +// constant time sign +void SecretKey::signCT(Sign& sign, const std::string& m) const +{ + G1 Hm; + HashAndMapToG1(Hm, m); + G1::mulCT(sign.getInner().sHm, Hm, getInner().s); +} void SecretKey::getPop(Sign& pop) const { diff --git a/src/bls_if.cpp b/src/bls_if.cpp index 8fd1a55..4080d70 100644 --- a/src/bls_if.cpp +++ b/src/bls_if.cpp @@ -134,6 +134,10 @@ void blsSecretKeySign(const blsSecretKey *sec, blsSign *sign, const char *m, siz { ((const bls::SecretKey*)sec)->sign(*(bls::Sign*)sign, std::string(m, size)); } +void blsSecretKeySignCT(const blsSecretKey *sec, blsSign *sign, const char *m, size_t size) +{ + ((const bls::SecretKey*)sec)->signCT(*(bls::Sign*)sign, std::string(m, size)); +} void blsSecretKeySet(blsSecretKey *sec, const blsSecretKey* msk, size_t k, const blsId *id) { |