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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`.
37 lines
1.0 KiB
TOML
37 lines
1.0 KiB
TOML
[package]
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name = "ciphersuite"
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version = "0.4.99"
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description = "Ciphersuites built around ff/group"
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license = "MIT"
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repository = "https://github.com/serai-dex/serai/tree/develop/crypto/ciphersuite"
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authors = ["Luke Parker <lukeparker5132@gmail.com>"]
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keywords = ["ciphersuite", "ff", "group"]
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edition = "2021"
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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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[lints]
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workspace = true
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[dependencies]
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std-shims = { path = "../../common/std-shims", version = "0.1.4", default-features = false, optional = true }
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zeroize = { version = "1", default-features = false }
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ciphersuite = { path = "../../crypto/ciphersuite", default-features = false }
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dalek-ff-group = { path = "../../crypto/dalek-ff-group", default-features = false, optional = true }
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[features]
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alloc = ["std-shims", "zeroize/alloc", "ciphersuite/alloc", "dalek-ff-group/alloc"]
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std = [
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"alloc",
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"std-shims/std",
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"zeroize/std",
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"ciphersuite/std",
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"dalek-ff-group?/std",
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]
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ed25519 = ["dalek-ff-group"]
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default = ["std"]
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