saymrwulf/curve25519-dalek-source
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Don't generate unused constants in build.rs.

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This commit is contained in:
Henry de Valence 2018-11-29 10:58:05 -08:00
parent 47a164da4d
commit e91cc685b1
1 changed files with 35 additions and 23 deletions
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58
build.rs
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@ -44,33 +44,31 @@ mod macros;
// Public modules
#[path = "src/scalar.rs"]
mod scalar;
#[path = "src/montgomery.rs"]
mod montgomery;
#[path = "src/edwards.rs"]
mod edwards;
#[path = "src/ristretto.rs"]
mod ristretto;
#[path = "src/constants.rs"]
mod constants;
#[path = "src/edwards.rs"]
mod edwards;
#[path = "src/montgomery.rs"]
mod montgomery;
#[path = "src/ristretto.rs"]
mod ristretto;
#[path = "src/scalar.rs"]
mod scalar;
#[path = "src/traits.rs"]
mod traits;
// Internal modules
#[path = "src/field.rs"]
mod field;
#[path = "src/backend/mod.rs"]
mod backend;
#[path = "src/field.rs"]
mod field;
#[path = "src/prelude.rs"]
mod prelude;
#[path = "src/window.rs"]
mod window;
use edwards::EdwardsBasepointTable;
use backend::serial::curve_models::AffineNielsPoint;
use window::NafLookupTable8;
fn main() {
// Enable the "stage2_build" feature in the main build stage
@ -97,7 +95,6 @@ use edwards::EdwardsBasepointTable;
use backend::serial::curve_models::AffineNielsPoint;
use window::LookupTable;
use window::NafLookupTable8;
/// Table containing precomputed multiples of the Ed25519 basepoint \\\\(B = (x, 4/5)\\\\).
pub const ED25519_BASEPOINT_TABLE: EdwardsBasepointTable = ED25519_BASEPOINT_TABLE_INNER_DOC_HIDDEN;
@ -107,20 +104,35 @@ pub const ED25519_BASEPOINT_TABLE: EdwardsBasepointTable = ED25519_BASEPOINT_TAB
pub const ED25519_BASEPOINT_TABLE_INNER_DOC_HIDDEN: EdwardsBasepointTable = {:?};
\n\n",
&table
).as_bytes(),
).unwrap();
)
.as_bytes(),
)
.unwrap();
// Now generate AFFINE_ODD_MULTIPLES_OF_BASEPOINT
let B = &constants::ED25519_BASEPOINT_POINT;
let odd_multiples = NafLookupTable8::<AffineNielsPoint>::from(B);
// if we are going to build the serial scalar_mul backend
#[cfg(not(all(
feature = "simd_backend",
any(target_feature = "avx2", target_feature = "avx512ifma")
)))]
{
use backend::serial::curve_models::AffineNielsPoint;
use window::NafLookupTable8;
f.write_all(
format!(
"\n
let B = &constants::ED25519_BASEPOINT_POINT;
let odd_multiples = NafLookupTable8::<AffineNielsPoint>::from(B);
f.write_all(
format!(
"\n
use window::NafLookupTable8;
/// Odd multiples of the basepoint `[B, 3B, 5B, 7B, 9B, 11B, 13B, 15B, ..., 127B]`.
pub(crate) const AFFINE_ODD_MULTIPLES_OF_BASEPOINT: NafLookupTable8<AffineNielsPoint> = {:?};
\n\n",
&odd_multiples
).as_bytes(),
).unwrap();
&odd_multiples
)
.as_bytes(),
)
.unwrap();
}
}