Qortal/pirate-librustzcash
1
0
Fork 1
mirror of https://github.com/Qortal/pirate-librustzcash.git synced 2025-07-31 12:31:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

Improve Field::pow API and impl

Browse Source 
Renamed to Field::pow_vartime to indicate it is still variable time with
respect to the exponent.
This commit is contained in:
Jack Grigg
2019-05-15 11:24:00 +01:00
parent e88e2a9dc2
commit 1c9f5742fa
15 changed files with 75 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
pairing/src/bls12_381/fr.rs
View File

@@ -767,7 +767,7 @@ fn test_fr_pow() {
// Exponentiate by various small numbers and ensure it consists with repeated
// multiplication.
let a = Fr::random(&mut rng);
let target = a.pow(&[i]);
let target = a.pow_vartime(&[i]);
let mut c = Fr::one();
for _ in 0..i {
c.mul_assign(&a);
@@ -779,7 +779,7 @@ fn test_fr_pow() {
// Exponentiating by the modulus should have no effect in a prime field.
let a = Fr::random(&mut rng);
assert_eq!(a, a.pow(Fr::char()));
assert_eq!(a, a.pow_vartime(Fr::char()));
}
}
@@ -964,7 +964,7 @@ fn test_fr_root_of_unity() {
Fr::from_repr(FrRepr::from(7)).unwrap()
);
assert_eq!(
Fr::multiplicative_generator().pow([
Fr::multiplicative_generator().pow_vartime([
0xfffe5bfeffffffff,
0x9a1d80553bda402,
0x299d7d483339d808,
@@ -972,7 +972,7 @@ fn test_fr_root_of_unity() {
]),
Fr::root_of_unity()
);
assert_eq!(Fr::root_of_unity().pow([1 << Fr::S]), Fr::one());
assert_eq!(Fr::root_of_unity().pow_vartime([1 << Fr::S]), Fr::one());
assert!(bool::from(Fr::multiplicative_generator().sqrt().is_none()));
}