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refactor(bp+): save one inversion, use sc_muladd

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Dusan Klinec 2022-04-26 13:37:11 +02:00
parent 67e5ca9ad6
commit 4f08bcd800
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GPG Key ID: 6337E118CCBCE103
1 changed files with 3 additions and 3 deletions
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6
src/ringct/bulletproofs_plus.cc
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@ -644,8 +644,7 @@ try_again:
{
sc_mul(temp.bytes, temp.bytes, z_squared.bytes);
sc_mul(temp2.bytes, y_powers[MN+1].bytes, temp.bytes);
sc_mul(temp2.bytes, temp2.bytes, gamma[j].bytes);
sc_add(alpha1.bytes, alpha1.bytes, temp2.bytes);
sc_muladd(alpha1.bytes, temp2.bytes, gamma[j].bytes, alpha1.bytes);
}
// These are used in the inner product rounds
@ -706,7 +705,8 @@ try_again:
rct::key challenge_squared;
sc_mul(challenge_squared.bytes, challenge.bytes, challenge.bytes);
rct::key challenge_squared_inv = invert(challenge_squared);
rct::key challenge_squared_inv;
sc_mul(challenge_squared_inv.bytes, challenge_inv.bytes, challenge_inv.bytes);
sc_muladd(alpha1.bytes, dL.bytes, challenge_squared.bytes, alpha1.bytes);
sc_muladd(alpha1.bytes, dR.bytes, challenge_squared_inv.bytes, alpha1.bytes);