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ff 0.13 (#269)

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* Partial move to ff 0.13

It turns out the newly released k256 0.12 isn't on ff 0.13, preventing further
work at this time.

* Update all crates to work on ff 0.13

The provided curves still need to be expanded to fit the new API.

* Finish adding dalek-ff-group ff 0.13 constants

* Correct FieldElement::product definition

Also stops exporting macros.

* Test most new parts of ff 0.13

* Additionally test ff-group-tests with BLS12-381 and the pasta curves

We only tested curves from RustCrypto. Now we test a curve offered by zk-crypto,
the group behind ff/group, and the pasta curves, which is by Zcash (though
Zcash developers are also behind zk-crypto).

* Finish Ed448

Fully specifies all constants, passes all tests in ff-group-tests, and finishes moving to ff-0.13.

* Add RustCrypto/elliptic-curves to allowed git repos

Needed due to k256/p256 incorrectly defining product.

* Finish writing ff 0.13 tests

* Add additional comments to dalek

* Further comments

* Update ethereum-serai to ff 0.13
This commit is contained in:
Luke Parker
2023-03-28 04:38:01 -04:00
committed by GitHub
parent a9f6300e86
commit 79aff5d4c8
59 changed files with 865 additions and 429 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
crypto/dkg/src/frost.rs
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@@ -156,8 +156,8 @@ fn polynomial<F: PrimeField + Zeroize>(
) -> Zeroizing<F> {
let l = F::from(u64::from(u16::from(l)));
// This should never be reached since Participant is explicitly non-zero
assert!(l != F::zero(), "zero participant passed to polynomial");
let mut share = Zeroizing::new(F::zero());
assert!(l != F::ZERO, "zero participant passed to polynomial");
let mut share = Zeroizing::new(F::ZERO);
for (idx, coefficient) in coefficients.iter().rev().enumerate() {
*share += coefficient.deref();
if idx != (coefficients.len() - 1) {
@@ -366,7 +366,7 @@ impl<C: Ciphersuite> Zeroize for KeyMachine<C> {
fn exponential<C: Ciphersuite>(i: Participant, values: &[C::G]) -> Vec<(C::F, C::G)> {
let i = C::F::from(u16::from(i).into());
let mut res = Vec::with_capacity(values.len());
(0 .. values.len()).fold(C::F::one(), |exp, l| {
(0 .. values.len()).fold(C::F::ONE, |exp, l| {
res.push((exp, values[l]));
exp * i
});
@@ -389,7 +389,7 @@ fn share_verification_statements<C: Ciphersuite>(
// converts whatever we give to an iterator and then builds a Vec internally, welcoming copies
let neg_share_pub = C::generator() * -*share;
share.zeroize();
values.push((C::F::one(), neg_share_pub));
values.push((C::F::ONE, neg_share_pub));
values
}