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| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2017-11-21 22:55:57 +0000 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2017-12-07 19:23:10 +0000 |
| commit | ada4291469156f76eb605b2110a068df58a4e142 (patch) | |
| tree | 6400f6cdff24a12d0d30fe0daec53caf92545490 /src/ringct | |
| parent | ringct: add a version of addKeys which returns the result (diff) | |
| download | monero-ada4291469156f76eb605b2110a068df58a4e142.tar.xz | |
add a version of ge_double_scalarmult_precomp_vartime with A precomp
Diffstat (limited to 'src/ringct')
| -rw-r--r-- | src/ringct/rctOps.cpp | 9 | ||||
| -rw-r--r-- | src/ringct/rctOps.h | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/ringct/rctOps.cpp b/src/ringct/rctOps.cpp index 292bb8f37..8e94b52b3 100644 --- a/src/ringct/rctOps.cpp +++ b/src/ringct/rctOps.cpp @@ -262,6 +262,15 @@ namespace rct { ge_tobytes(aAbB.bytes, &rv); } + //addKeys3 + //aAbB = a*A + b*B where a, b are scalars, A, B are curve points + //A and B must be input after applying "precomp" + void addKeys3(key &aAbB, const key &a, const ge_dsmp A, const key &b, const ge_dsmp B) { + ge_p2 rv; + ge_double_scalarmult_precomp_vartime2(&rv, a.bytes, A, b.bytes, B); + ge_tobytes(aAbB.bytes, &rv); + } + //subtract Keys (subtracts curve points) //AB = A - B where A, B are curve points diff --git a/src/ringct/rctOps.h b/src/ringct/rctOps.h index 1ff2e257b..3f8f6955c 100644 --- a/src/ringct/rctOps.h +++ b/src/ringct/rctOps.h @@ -134,6 +134,7 @@ namespace rct { //aAbB = a*A + b*B where a, b are scalars, A, B are curve points //B must be input after applying "precomp" void addKeys3(key &aAbB, const key &a, const key &A, const key &b, const ge_dsmp B); + void addKeys3(key &aAbB, const key &a, const ge_dsmp A, const key &b, const ge_dsmp B); //AB = A - B where A, B are curve points void subKeys(key &AB, const key &A, const key &B); //checks if A, B are equal as curve points |