mirror of
https://github.com/saymrwulf/curve25519-dalek-source.git
synced 2026-09-04 20:24:10 +00:00
f1d2b5182b
This begins to attempt to restructure the source tree so that the common parts are common and the different parts are different. The backend is now split into two parts: - serial (containing the implementation using serial formulas and mixed-model arithmetic). - vector (containing the implementation using parallel formulas and single-model arithmetic). The serial scalar_mul tree is now under backend::serial::scalar_mul. The avx2 scalar_mul tree is now under backend::avx2::scalar_mul.
118 lines
3.2 KiB
Rust
118 lines
3.2 KiB
Rust
#![cfg_attr(all(feature = "alloc", not(feature = "std")), feature(alloc))]
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#![cfg_attr(feature = "nightly", feature(cfg_target_feature))]
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#![allow(unused_variables)]
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#![allow(non_snake_case)]
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#![allow(dead_code)]
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#[cfg(all(feature = "alloc", not(feature = "std")))]
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extern crate alloc;
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extern crate byteorder;
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extern crate clear_on_drop;
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extern crate core;
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extern crate digest;
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extern crate rand;
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extern crate subtle;
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#[cfg(all(feature = "nightly", feature = "avx2_backend"))]
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extern crate packed_simd;
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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::Path;
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// Replicate lib.rs in the build.rs, since we're effectively building the whole crate twice.
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//
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// This should be fixed up by refactoring our code to seperate the "minimal" parts from the rest.
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//
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// For instance, this shouldn't exist here at all, but it does.
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#[cfg(feature = "serde")]
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extern crate serde;
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// Macros come first!
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#[path = "src/macros.rs"]
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#[macro_use]
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mod macros;
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// Public modules
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#[path = "src/scalar.rs"]
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mod scalar;
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#[path = "src/montgomery.rs"]
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mod montgomery;
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#[path = "src/edwards.rs"]
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mod edwards;
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#[path = "src/ristretto.rs"]
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mod ristretto;
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#[path = "src/constants.rs"]
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mod constants;
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#[path = "src/traits.rs"]
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mod traits;
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// Internal modules
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#[path = "src/field.rs"]
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mod field;
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#[path = "src/backend/mod.rs"]
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mod backend;
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#[path = "src/prelude.rs"]
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mod prelude;
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#[path = "src/window.rs"]
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mod window;
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use edwards::EdwardsBasepointTable;
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use backend::serial::curve_models::AffineNielsPoint;
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use window::NafLookupTable8;
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fn main() {
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// Enable the "stage2_build" feature in the main build stage
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println!("cargo:rustc-cfg=feature=\"stage2_build\"\n");
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let out_dir = env::var("OUT_DIR").unwrap();
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let dest_path = Path::new(&out_dir).join("basepoint_table.rs");
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let mut f = File::create(&dest_path).unwrap();
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// Generate a table of precomputed multiples of the basepoint
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let table = EdwardsBasepointTable::create(&constants::ED25519_BASEPOINT_POINT);
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f.write_all(
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format!(
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"\n
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#[cfg(feature = \"u32_backend\")]
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use backend::serial::u32::field::FieldElement2625;
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#[cfg(feature = \"u64_backend\")]
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use backend::serial::u64::field::FieldElement51;
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use edwards::EdwardsBasepointTable;
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use backend::serial::curve_models::AffineNielsPoint;
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use window::LookupTable;
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use window::NafLookupTable8;
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/// Table containing precomputed multiples of the Ed25519 basepoint \\\\(B = (x, 4/5)\\\\).
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pub const ED25519_BASEPOINT_TABLE: EdwardsBasepointTable = ED25519_BASEPOINT_TABLE_INNER_DOC_HIDDEN;
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/// Inner constant, used to avoid filling the docs with precomputed points.
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#[doc(hidden)]
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pub const ED25519_BASEPOINT_TABLE_INNER_DOC_HIDDEN: EdwardsBasepointTable = {:?};
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\n\n",
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&table
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).as_bytes(),
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).unwrap();
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// Now generate AFFINE_ODD_MULTIPLES_OF_BASEPOINT
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let B = &constants::ED25519_BASEPOINT_POINT;
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let odd_multiples = NafLookupTable8::<AffineNielsPoint>::from(B);
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f.write_all(
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format!(
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"\n
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/// Odd multiples of the basepoint `[B, 3B, 5B, 7B, 9B, 11B, 13B, 15B, ..., 127B]`.
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pub(crate) const AFFINE_ODD_MULTIPLES_OF_BASEPOINT: NafLookupTable8<AffineNielsPoint> = {:?};
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\n\n",
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&odd_multiples
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).as_bytes(),
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).unwrap();
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}
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