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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`.
45 lines
1.8 KiB
TOML
45 lines
1.8 KiB
TOML
[package]
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name = "embedwards25519"
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version = "0.1.0"
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description = "A curve defined over the Ed25519 scalar field"
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license = "MIT"
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repository = "https://github.com/serai-dex/serai/tree/develop/crypto/embedwards25519"
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authors = ["Luke Parker <lukeparker5132@gmail.com>"]
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keywords = ["curve25519", "ed25519", "ristretto255", "group"]
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edition = "2021"
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rust-version = "1.86"
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[package.metadata.docs.rs]
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all-features = true
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rustdoc-args = ["--cfg", "docsrs"]
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[dependencies]
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hex-literal = { version = "0.4", default-features = false }
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std-shims = { version = "0.1", path = "../../common/std-shims", default-features = false, optional = true }
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zeroize = { version = "^1.5", default-features = false, features = ["zeroize_derive"] }
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typenum = { version = "1", default-features = false }
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prime-field = { path = "../prime-field", default-features = false }
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short-weierstrass = { path = "../short-weierstrass", default-features = false }
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curve25519-dalek = { version = "4", default-features = false, features = ["legacy_compatibility"] }
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blake2 = { version = "0.11.0-rc.2", default-features = false }
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ciphersuite = { path = "../ciphersuite", version = "0.4", default-features = false }
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generalized-bulletproofs-ec-gadgets = { git = "https://github.com/monero-oxide/monero-oxide", rev = "7216a2e84c7671c167c3d81eafe0d2b1f418f102", default-features = false, optional = true }
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[dev-dependencies]
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hex = "0.4"
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rand_core = { version = "0.6", features = ["std"] }
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ff-group-tests = { path = "../ff-group-tests" }
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[features]
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alloc = ["std-shims", "zeroize/alloc", "prime-field/alloc", "short-weierstrass/alloc", "curve25519-dalek/alloc", "blake2/alloc", "ciphersuite/alloc", "generalized-bulletproofs-ec-gadgets"]
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std = ["alloc", "std-shims/std", "zeroize/std", "prime-field/std", "short-weierstrass/std", "ciphersuite/std", "generalized-bulletproofs-ec-gadgets/std"]
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default = ["std"]
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