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90bc364f9f
The prior-present `Ciphersuite::hash_to_F` was a sin. Implementations took a DST, yet were not require to securely handle it. It was also biased towards the requirements of `modular-frost` as `ciphersuite` was originally written all those years ago, when `modular-frost` had needs exceeding what `ff`, `group` satisfied. Now, the hash is bound to produce an output which can be converted to a scalar with `ff::FromUniformBytes`. A new `hash_to_F`, which accepts a single argument of the value to hash (removing the potential to insecurely handle the DST by removing the DST entirely). Due to `digest` yielding a `GenericArray`, yet `FromUniformBytes` taking a `const usize`, the `ciphersuite` crate now defines a `FromUniformBytes` trait taking an array (then implemented for all satisfiers of `ff::FromUniformBytes`). In order to get the array type from the `GenericArray`, the output of the hash, `digest` is updated to the `0.11` release candidate which moves to `flexible-array` which solves that problem. The existing, specific `hash_to_F` functions have been moved to `modular-frost` as necessary. `flexible-array` itself is patched to a fork due to https://github.com/RustCrypto/hybrid-array/issues/131.
58 lines
1.5 KiB
TOML
58 lines
1.5 KiB
TOML
[package]
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name = "ciphersuite"
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version = "0.4.2"
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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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rust-version = "1.85"
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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 = "^0.1.1", default-features = false, optional = true }
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rand_core = { version = "0.6", default-features = false }
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zeroize = { version = "^1.5", default-features = false, features = ["derive"] }
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subtle = { version = "^2.4", default-features = false }
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digest = { version = "0.11.0-rc.0", default-features = false, features = ["block-api"] }
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transcript = { package = "flexible-transcript", path = "../transcript", version = "^0.3.2", default-features = false }
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ff = { version = "0.13", default-features = false, features = ["bits"] }
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group = { version = "0.13", default-features = false }
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[dev-dependencies]
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hex = { version = "0.4", default-features = false, features = ["std"] }
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rand_core = { version = "0.6", default-features = false, features = ["std"] }
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ff-group-tests = { version = "0.13", path = "../ff-group-tests" }
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[features]
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alloc = ["std-shims", "ff/alloc"]
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std = [
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"alloc",
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"std-shims/std",
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"rand_core/std",
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"zeroize/std",
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"subtle/std",
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"transcript/std",
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"ff/std",
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]
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default = ["std"]
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