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prepend zeros if bigint too small

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psippl 2022-01-31 22:54:45 -08:00
parent caab6aa071
commit 0047d8e7c2
1 changed files with 7 additions and 1 deletions
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8
src/util.rs
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@ -18,7 +18,13 @@ pub fn bigint_to_fr(bi: &BigInt) -> Fr {
let m = bi.modpow(&BigInt::from(1), &q);
let mut repr = FrRepr::default();
let (_, res) = m.to_bytes_be();
let (_, mut res) = m.to_bytes_be();
//prepend zeros
res.reverse();
res.resize(32, 0);
res.reverse();
repr.read_be(&res[..]).unwrap();
Fr::from_repr(repr).unwrap()
}