saymrwulf/betrusted-curve25519-dalek-source
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Merge branch 'cfg_fix' into update_to_v4

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David Kotval 2024-02-16 15:48:38 -06:00
commit e8fdef83b4
3 changed files with 19 additions and 9 deletions
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17
curve25519-dalek/Cargo.toml
View file

@ -56,25 +56,26 @@ subtle = { version = "2.3.0", default-features = false }
serde = { version = "1.0", default-features = false, optional = true, features = ["derive"] }
zeroize = { version = "1", default-features = false, optional = true }
# Betrusted/Precursor dependency set
[target.'cfg(curve25519_dalek_backend = "u32e_backend")'.dependencies]
engine25519-as = {git = "https://github.com/betrusted-io/engine25519-as.git", rev = "d249c967556b02ab5439eacb5078fa00c60b93d6", default-features = false, features = []}
engine-25519 = { git = "https://github.com/betrusted-io/xous-engine-25519.git", rev = "63d3d1f30736022e791deaacf4dd62c00b42fe2e"}
utralib = {version = "0.1.0"} # this is bogus -- must be patched in the invoking build environment TODO: if this builds, it seems a crate has been released as version 0.1.23 that could replace this
# Betrusted/Precursor dependency set, enabled by backend_u32e feature
engine25519-as = {git = "https://github.com/betrusted-io/engine25519-as.git", rev = "d249c967556b02ab5439eacb5078fa00c60b93d6", default-features = false, features = [], optional = true}
engine-25519 = { git = "https://github.com/betrusted-io/xous-engine-25519.git", rev = "63d3d1f30736022e791deaacf4dd62c00b42fe2e", optional = true}
utralib = {version = "0.1.0", optional = true} # this is bogus -- must be patched in the invoking build environment TODO: if this builds, it seems a crate has been released as version 0.1.23 that could replace this
[target.'cfg(target_arch = "x86_64")'.dependencies]
cpufeatures = "0.2.6"
[target.'cfg(curve25519_dalek_backend = "fiat")'.dependencies]
fiat-crypto = { version = "0.2.1", default-features = false }
fiat-crypto = { version = "0.2.1", default-features = false , optional = true}
[features]
default = ["alloc", "precomputed-tables", "zeroize"]
alloc = ["zeroize?/alloc"]
precomputed-tables = []
legacy_compatibility = []
backend_fiat = ["dep:fiat-crypto"]
backend_u32e = ["dep:engine25519-as","dep:engine-25519","dep:utralib"]
group = ["dep:group", "rand_core"]
group-bits = ["group", "ff/bits"]
[target.'cfg(all(not(curve25519_dalek_backend = "fiat"), not(curve25519_dalek_backend = "serial"), target_arch = "x86_64", not(curve25519_dalek_backend = "u32e_backend")))'.dependencies]
# TODO: clean this up as you can't select deps like this
[target.'cfg(all(not(curve25519_dalek_backend = "fiat"), not(curve25519_dalek_backend = "serial"), target_arch = "x86_64"))'.dependencies]
curve25519-dalek-derive = { version = "0.1", path = "../curve25519-dalek-derive" }

9
curve25519-dalek/build.rs
View file

@ -12,6 +12,12 @@ enum DalekBits {
Dalek64,
}
macro_rules! build_debug {
($($tokens: tt)*) => {
println!("cargo:warning={}", format!($($tokens)*))
}
}
fn main() {
let target_triplet = std::env::var("TARGET").unwrap();
let platform = platforms::Platform::find(&target_triplet).unwrap();
@ -21,6 +27,8 @@ fn main() {
Ok("64") => DalekBits::Dalek64,
_ => deterministic::determine_curve25519_dalek_bits(),
};
build_debug!("CARGO_CFG_CURVE25519_DALEK_BITS: {:?}", std::env::var("CARGO_CFG_CURVE25519_DALEK_BITS").as_deref());
build_debug!("curve25519_dalek_bits {:?}", curve25519_dalek_bits);
match curve25519_dalek_bits {
DalekBits::Dalek64 => println!("cargo:rustc-cfg=curve25519_dalek_bits=\"64\""),
@ -77,6 +85,7 @@ fn main() {
},
}
};
build_debug!("curve25519_dalek_backend {:?}", curve25519_dalek_backend);
println!("cargo:rustc-cfg=curve25519_dalek_backend=\"{curve25519_dalek_backend}\"");
}

2
curve25519-dalek/src/backend/serial/u32/constants.rs
View file

@ -69,7 +69,7 @@ pub(crate) const SQRT_M1: FieldElement2625 = FieldElement2625::from_limbs([
/// `APLUS2_OVER_FOUR` is (A+2)/4. (This is used internally within the Montgomery ladder.)
/// The u32e backend uses hardware acceleration for this.
#[cfg(not(curve_dalek_backend = "u32e_backend"))]
#[cfg(not(curve25519_dalek_backend = "u32e_backend"))]
pub(crate) const APLUS2_OVER_FOUR: FieldElement2625 =
FieldElement2625::from_limbs([121666, 0, 0, 0, 0, 0, 0, 0, 0, 0]);