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Merge pull request #29 from ebfull/pedersen-chunks 

63 chunks per pedersen hash segment
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ebfull 2018-02-20 15:09:59 -07:00 committed by GitHub
parent c091e274ee 821d22261e
commit 8d633db82b
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 11 additions and 5 deletions
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2
src/jubjub/mod.rs
View File

@ -93,7 +93,7 @@ impl JubjubParams<Bls12> for JubjubBls12 {
&self.pedersen_hash_generators &self.pedersen_hash_generators
} }
fn pedersen_hash_chunks_per_generator(&self) -> usize { fn pedersen_hash_chunks_per_generator(&self) -> usize {
62 63
} }
fn fixed_base_chunks_per_generator(&self) -> usize { fn fixed_base_chunks_per_generator(&self) -> usize {
84 84

14
src/jubjub/tests.rs
View File

@ -356,10 +356,16 @@ fn test_jubjub_params<E: JubjubEngine>(params: &E::Params) {
// Check that the number of windows per generator // Check that the number of windows per generator
// in the Pedersen hash does not allow for collisions // in the Pedersen hash does not allow for collisions
let mut cur = E::Fr::one().into_repr(); let mut cur = E::Fs::one().into_repr();
let mut pacc = E::Fr::zero().into_repr(); let mut max = E::Fs::char();
let mut nacc = E::Fr::char(); {
max.sub_noborrow(&E::Fs::one().into_repr());
max.div2();
}
let mut pacc = E::Fs::zero().into_repr();
let mut nacc = E::Fs::char();
for _ in 0..params.pedersen_hash_chunks_per_generator() for _ in 0..params.pedersen_hash_chunks_per_generator()
{ {
@ -371,7 +377,7 @@ fn test_jubjub_params<E: JubjubEngine>(params: &E::Params) {
assert_eq!(pacc.add_nocarry(&tmp), false); assert_eq!(pacc.add_nocarry(&tmp), false);
assert_eq!(nacc.sub_noborrow(&tmp), false); assert_eq!(nacc.sub_noborrow(&tmp), false);
assert!(pacc < E::Fr::char()); assert!(pacc < max);
assert!(pacc < nacc); assert!(pacc < nacc);
// cur = cur * 16 // cur = cur * 16