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Replace ATE_LOOP_COUNT with its 2-NAF for MNT curves (#107)

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* Replace ATE_LOOP_COUNT by its 2-NAF

* Add constant references

* Apply suggestions from code review

Co-authored-by: Weikeng Chen <w.k@berkeley.edu>
This commit is contained in:
mmagician
2022-09-02 17:19:51 +02:00
committed by GitHub
parent b433045f4d
commit 42289245a6
4 changed files with 49 additions and 16 deletions
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22
mnt6_753/src/curves/mod.rs
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@@ -33,13 +33,21 @@ impl MNT6Parameters for Parameters {
Fp3::new(Fq::ZERO, Fq::ZERO, g1::Parameters::COEFF_A);
// https://github.com/o1-labs/snarky/blob/9c21ab2bb23874604640740d646a932e813432c3/snarkette/mnt6753.ml
const ATE_LOOP_COUNT: &'static [u64] = &[
8824542903220142080,
7711082599397206192,
8303354903384568230,
5874150271971943936,
9717849827920685054,
95829799234282493,
const ATE_LOOP_COUNT: &'static [i8] = &[
1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, -1, 0, 1, 0, 1, 0, -1, 0, -1, 0, 0, 1, 0, 0, 0, -1, 0,
-1, 0, -1, 0, 0, 1, 0, 0, 0, 0, 1, 0, -1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, -1,
0, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 1, 0, -1, 0, 0, 0, -1, 0, 1, 0, 0, 0, -1, 0,
0, -1, 0, 1, 0, -1, 0, 0, 0, -1, 0, 0, -1, 0, 1, 0, 0, -1, 0, -1, 0, 1, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, -1, 0, 0, 1, 0, 1, 0, 0, 1, 0, -1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1,
0, 0, 1, 0, 0, 1, 0, -1, 0, 1, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, -1, 0, 0, -1,
0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 1, 0, -1, 0, 1, 0, 0, 0, -1, 0, 0,
-1, 0, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0,
-1, 0, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 0, -1, 0, -1, 0, -1, 0,
0, 0, 0, 0, 1, 0, -1, 0, 1, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, -1, 0, 0, 1,
0, -1, 0, -1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, -1, 0, -1, 0, 0, 0, 0, 1, 0, 0,
0, -1, 0, 1, 0, 1, 0, 0, 0, -1, 0, 0, -1, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0,
0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 1, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0,
];
const ATE_IS_LOOP_COUNT_NEG: bool = false;
const FINAL_EXPONENT_LAST_CHUNK_1: BigInteger768 =