diff options
Diffstat (limited to 'src/ringct/rctOps.cpp')
| -rw-r--r-- | src/ringct/rctOps.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/ringct/rctOps.cpp b/src/ringct/rctOps.cpp index b2dd32ada..245a3f477 100644 --- a/src/ringct/rctOps.cpp +++ b/src/ringct/rctOps.cpp @@ -511,6 +511,23 @@ namespace rct { ge_tobytes(aAbB.bytes, &rv); } + // addKeys_aGbBcC + // computes aG + bB + cC + // G is the fixed basepoint and B,C require precomputation + void addKeys_aGbBcC(key &aGbBcC, const key &a, const key &b, const ge_dsmp B, const key &c, const ge_dsmp C) { + ge_p2 rv; + ge_triple_scalarmult_base_vartime(&rv, a.bytes, b.bytes, B, c.bytes, C); + ge_tobytes(aGbBcC.bytes, &rv); + } + + // addKeys_aAbBcC + // computes aA + bB + cC + // A,B,C require precomputation + void addKeys_aAbBcC(key &aAbBcC, const key &a, const ge_dsmp A, const key &b, const ge_dsmp B, const key &c, const ge_dsmp C) { + ge_p2 rv; + ge_triple_scalarmult_precomp_vartime(&rv, a.bytes, A, b.bytes, B, c.bytes, C); + ge_tobytes(aAbBcC.bytes, &rv); + } //subtract Keys (subtracts curve points) //AB = A - B where A, B are curve points |