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a141deaf36
This helps identify where the various functionalities are used, or rather, not used. The `Ciphersuite` trait present in `patches/ciphersuite`, facilitating the entire FCMP++ tree, only requires the markers _and_ canonical point decoding. I've opened a PR to upstream such a trait into `group` (https://github.com/zkcrypto/group/pull/68). `WrappedGroup` is still justified for as long as `Group::generator` exists. Moving `::generator()` to its own trait, on an independent structure (upstream) would be massively appreciated. @tarcieri also wanted to update from `fn generator()` to `const GENERATOR`, which would encourage further discussion on https://github.com/zkcrypto/group/issues/32 and https://github.com/zkcrypto/group/issues/45, which have been stagnant. The `Id` trait is occasionally used yet really should be first off the chopping block. Finally, `WithPreferredHash` is only actually used around a third of the time, which more than justifies it being a separate trait. --- Updates `dalek_ff_group::Scalar` to directly re-export `curve25519_dalek::Scalar`, as without issue. `dalek_ff_group::RistrettoPoint` also could be replaced with an export of `curve25519_dalek::RistrettoPoint`, yet the coordinator relies on how we implemented `Hash` on it for the hell of it so it isn't worth it at this time. `dalek_ff_group::EdwardsPoint` can't be replaced for an re-export of `curve25519_dalek::SubgroupPoint` as it doesn't implement `zeroize`, `subtle` traits within a released, non-yanked version. Relevance to https://github.com/serai-dex/serai/issues/201 and https://github.com/dalek-cryptography/curve25519-dalek/issues/811#issuecomment-3247732746. Also updates the `Ristretto` ciphersuite to prefer `Blake2b-512` over `SHA2-512`. In order to maintain compliance with FROST's IETF standard, `modular-frost` defines its own ciphersuite for Ristretto which still uses `SHA2-512`.
59 lines
1.3 KiB
Rust
59 lines
1.3 KiB
Rust
use std::time::Instant;
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use rand_core::OsRng;
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use zeroize::Zeroizing;
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use ciphersuite::{
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group::{ff::Field, Group},
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WrappedGroup,
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};
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use generalized_bulletproofs::{Generators, tests::insecure_test_generators};
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use crate::{
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Curves, Ed25519,
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proof::*,
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tests::{THRESHOLD, PARTICIPANTS},
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};
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fn proof<C: Curves>() {
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let generators = insecure_test_generators(&mut OsRng, 2048).unwrap();
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let embedded_private_key =
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Zeroizing::new(<C::EmbeddedCurve as WrappedGroup>::F::random(&mut OsRng));
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let ecdh_public_keys: [_; PARTICIPANTS as usize] =
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core::array::from_fn(|_| <C::EmbeddedCurve as WrappedGroup>::G::random(&mut OsRng));
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let time = Instant::now();
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let res = Proof::<C>::prove(
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&mut OsRng,
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&generators,
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[0; 32],
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THRESHOLD.into(),
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&ecdh_public_keys,
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&embedded_private_key,
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)
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.unwrap();
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println!("Proving time: {:?}", time.elapsed());
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let time = Instant::now();
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let mut verifier = Generators::batch_verifier();
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Proof::<C>::verify(
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&mut OsRng,
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&generators,
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&mut verifier,
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[0; 32],
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THRESHOLD.into(),
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&ecdh_public_keys,
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C::EmbeddedCurve::generator() * *embedded_private_key,
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&res.proof,
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)
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.unwrap();
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assert!(generators.verify(verifier));
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println!("Verifying time: {:?}", time.elapsed());
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}
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#[test]
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fn ristretto_proof() {
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proof::<Ed25519>();
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}
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