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pedersen hashes: example of size limit bug

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This commit is contained in:
Kobi Gurkan
2018-08-17 18:34:54 +03:00
committed by Jack Grigg
parent 414d651c9c
commit 15633ad434
3 changed files with 23 additions and 5 deletions
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8
zcash_proofs/src/circuit/pedersen_hash.rs
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@@ -41,6 +41,7 @@ where
let b = bits.next().unwrap_or(&boolean_false);
let c = bits.next().unwrap_or(&boolean_false);
let tmp = lookup3_xy_with_conditional_negation(
cs.namespace(|| format!("segment {}, window {}", segment_i, window_i)),
&[a.clone(), b.clone(), c.clone()],
@@ -213,16 +214,19 @@ mod test {
fn test_pedersen_hash_alternative() {
let params = &JubjubBls12::new();
let mut input: Vec<bool> = vec![true, true, true, false, false, false, true, true, true, false, false, false, true, true, true, false, false, false, true, true, true, false, false, false, true, true, true, false, false, false, true, true, true, false, false, false, true, true, true, false, true, false, true, true, true, true, true, false, true, false, false, false, true, true, false, false, false, false, false, false, false, false, false, false, true, false, false, false, true, false, true, true, true, false, false, true, true, false, true, true, true, true, true, false, true, true, false, true, true, false, true, false, true, false, true, true, false, true, false, true, true, false, false, false, false, false, true, true, false, true, false, true, true, true, true, false, true, false, true, false, false, false, false, true, true, true, false, true, true, true, false, true, false, false, true, false, true, true, true, false, false, false, true, true];
let mut input: Vec<bool> = vec![];
for i in 0..(63*3*4+1) {
input.push(true);
}
let mut cs = TestConstraintSystem::<Bls12>::new();
let input_bools: Vec<Boolean> = input.iter().enumerate().map(|(i, b)| {
Boolean::from(
AllocatedBit::alloc(cs.namespace(|| format!("input {}", i)), Some(*b)).unwrap()
)
}).collect();
let res = pedersen_hash(
cs.namespace(|| "pedersen hash"),
Personalization::Empty,