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Merged
thomwiggers merged 5 commits into from
Dec 2, 2025
Merged

support pqcrypto in wasm unknown unknown #94

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f1df4ed
Add support for OpenBSD's wasm32 libc and improve WASM compatibility
biryukovmaxim Nov 25, 2025
1768c2a
Extend WASM compatibility by integrating OpenBSD's wasm32 libc
biryukovmaxim Nov 26, 2025
4c10360
Fix typos in feature keys: correct `getrandom_wasm_jd` to `getrandom_…
biryukovmaxim Dec 2, 2025
0761847
Add CI workflow for wasm32-unknown-unknown target
biryukovmaxim Dec 2, 2025
b5151a1
Merge branch 'main' into poc-falcon-in-wasm-unknown-unknown
biryukovmaxim Dec 2, 2025
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5 changes: 4 additions & 1 deletion pqcrypto-classicmceliece/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -14,15 +14,18 @@ categories = ["cryptography", "no-std"]
[dependencies]
pqcrypto-internals = { path = "../pqcrypto-internals", version = "0.2.6" }
pqcrypto-traits = { path = "../pqcrypto-traits", version = "0.3.5", default-features = false }
libc = "0.2.0"
serde = { version = "1.0", features = ["derive"], optional = true }
serde-big-array = { version = "0.5.1", optional = true }

[target.wasm32-unknown-unknown.dependencies]
wasm32-unknown-unknown-openbsd-libc = "0.2"

[features]
default = ["avx2", "std"]
avx2 = ["std"]
std = ["pqcrypto-traits/std"]
serialization = ["serde", "serde-big-array"]
getrandom_wasm_js = ["pqcrypto-internals/getrandom_wasm_js"]

[dev-dependencies]

Expand Down
34 changes: 22 additions & 12 deletions pqcrypto-classicmceliece/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -26,12 +26,17 @@ macro_rules! build_clean {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_clean", $variant).as_str());
};
}
Expand Down Expand Up @@ -68,12 +73,17 @@ macro_rules! build_avx2 {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_avx2", $variant).as_str());
};
}
Expand Down
2 changes: 1 addition & 1 deletion pqcrypto-classicmceliece/src/ffi.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@
//! * mceliece8192128f
// This file has been generated from PQClean.
// Find the templates in pqcrypto-template
use libc::c_int;
use core::ffi::c_int;

// ensures we link correctly
#[allow(unused_imports)]
Expand Down
5 changes: 4 additions & 1 deletion pqcrypto-falcon/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -14,16 +14,19 @@ categories = ["cryptography", "no-std"]
[dependencies]
pqcrypto-internals = { path = "../pqcrypto-internals", version = "0.2.6" }
pqcrypto-traits = { path = "../pqcrypto-traits", version = "0.3.5", default-features = false }
libc = "0.2.0"
serde = { version = "1.0", features = ["derive"], optional = true }
serde-big-array = { version = "0.5.1", optional = true }

[target.wasm32-unknown-unknown.dependencies]
wasm32-unknown-unknown-openbsd-libc = "0.2"

[features]
default = ["avx2", "neon", "std"]
avx2 = ["std"]
neon = ["std"]
std = ["pqcrypto-traits/std"]
serialization = ["serde", "serde-big-array"]
getrandom_wasm_js = ["pqcrypto-internals/getrandom_wasm_js"]

[dev-dependencies]
rand = "0.9"
Expand Down
51 changes: 33 additions & 18 deletions pqcrypto-falcon/build.rs
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -26,12 +26,17 @@ macro_rules! build_clean {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_clean", $variant).as_str());
};
}
Expand Down Expand Up @@ -70,12 +75,17 @@ macro_rules! build_avx2 {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_avx2", $variant).as_str());
};
}
Expand Down Expand Up @@ -103,12 +113,17 @@ macro_rules! build_aarch64 {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_aarch64", $variant).as_str());
};
}
Expand Down
2 changes: 1 addition & 1 deletion pqcrypto-falcon/src/ffi.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
//! * falcon-padded-1024
// This file has been generated from PQClean.
// Find the templates in pqcrypto-template
use libc::c_int;
use core::ffi::c_int;

// ensures we link correctly
#[allow(unused_imports)]
Expand Down
5 changes: 4 additions & 1 deletion pqcrypto-hqc/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -14,14 +14,17 @@ categories = ["cryptography", "no-std"]
[dependencies]
pqcrypto-internals = { path = "../pqcrypto-internals", version = "0.2.6" }
pqcrypto-traits = { path = "../pqcrypto-traits", version = "0.3.5", default-features = false }
libc = "0.2.0"
serde = { version = "1.0", features = ["derive"], optional = true }
serde-big-array = { version = "0.5.1", optional = true }

[target.wasm32-unknown-unknown.dependencies]
wasm32-unknown-unknown-openbsd-libc = "0.2"

[features]
default = ["std"]
std = ["pqcrypto-traits/std"]
serialization = ["serde", "serde-big-array"]
getrandom_wasm_js = ["pqcrypto-internals/getrandom_wasm_js"]

[dev-dependencies]

Expand Down
17 changes: 11 additions & 6 deletions pqcrypto-hqc/build.rs
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -26,12 +26,17 @@ macro_rules! build_clean {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_clean", $variant).as_str());
};
}
Expand Down
2 changes: 1 addition & 1 deletion pqcrypto-hqc/src/ffi.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@
//! * hqc-256
// This file has been generated from PQClean.
// Find the templates in pqcrypto-template
use libc::c_int;
use core::ffi::c_int;

// ensures we link correctly
#[allow(unused_imports)]
Expand Down
7 changes: 6 additions & 1 deletion pqcrypto-internals/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -10,10 +10,15 @@ links = "pqcrypto_internals"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[features]
getrandom_wasm_js = ["getrandom/wasm_js"]

[build-dependencies]
cc = { version = "1.0", features = ["parallel"] }
dunce = "1.0"

[dependencies]
getrandom = "0.3"
libc = "0.2"

[target.'cfg(target_arch = "wasm32")'.dependencies]
wasm32-unknown-unknown-openbsd-libc = "0.2"
12 changes: 8 additions & 4 deletions pqcrypto-internals/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,10 +30,14 @@ fn main() {
build.flag(format!("--sysroot={wasi_sdk_path}").as_str());
}

build
.include(&includepath)
.files(common_files)
.compile("pqclean_common");
build.include(&includepath);

if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
build.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

build.files(common_files).compile("pqclean_common");
println!("cargo:rustc-link-lib=pqclean_common");

let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap_or_default();
Expand Down
6 changes: 5 additions & 1 deletion pqcrypto-internals/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,10 @@

use core::slice;

#[allow(nonstandard_style)]
type size_t = usize;
use core::ffi::c_int;

/// Get random bytes; exposed for PQClean implementations.
///
/// # Safety
Expand All @@ -16,7 +20,7 @@ use core::slice;
/// }
/// ```
#[no_mangle]
pub unsafe extern "C" fn PQCRYPTO_RUST_randombytes(buf: *mut u8, len: libc::size_t) -> libc::c_int {
pub unsafe extern "C" fn PQCRYPTO_RUST_randombytes(buf: *mut u8, len: size_t) -> c_int {
let buf = slice::from_raw_parts_mut(buf, len);
getrandom::fill(buf).expect("RNG Failed");
0
Expand Down
5 changes: 4 additions & 1 deletion pqcrypto-mldsa/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -14,17 +14,20 @@ categories = ["cryptography", "no-std"]
[dependencies]
pqcrypto-internals = { path = "../pqcrypto-internals", version = "0.2.6" }
pqcrypto-traits = { path = "../pqcrypto-traits", version = "0.3.5", default-features = false }
libc = "0.2.0"
serde = { version = "1.0", features = ["derive"], optional = true }
serde-big-array = { version = "0.5.1", optional = true }
paste = "1.0"

[target.wasm32-unknown-unknown.dependencies]
wasm32-unknown-unknown-openbsd-libc = "0.2"

[features]
default = ["avx2", "neon", "std"]
avx2 = ["std"]
neon = ["std"]
std = ["pqcrypto-traits/std"]
serialization = ["serde", "serde-big-array"]
getrandom_wasm_js = ["pqcrypto-internals/getrandom_wasm_js"]

[dev-dependencies]
rand = "0.9"
Expand Down
51 changes: 33 additions & 18 deletions pqcrypto-mldsa/build.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,12 +26,17 @@ macro_rules! build_clean {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_clean", $variant).as_str());
};
}
Expand Down Expand Up @@ -70,12 +75,17 @@ macro_rules! build_avx2 {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_avx2", $variant).as_str());
};
}
Expand Down Expand Up @@ -103,12 +113,17 @@ macro_rules! build_aarch64 {
builder
.include(internals_include_path)
.include(&common_dir)
.include(target_dir)
.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
.include(target_dir);
if let Some(libc) = std::env::var_os("DEP_WASM32_UNKNOWN_UNKNOWN_OPENBSD_LIBC_INCLUDE") {
builder.include(libc);
println!("cargo::rustc-link-lib=wasm32-unknown-unknown-openbsd-libc");
}

builder.files(
scheme_files
.into_iter()
.map(|p| p.unwrap().to_string_lossy().into_owned()),
);
builder.compile(format!("{}_aarch64", $variant).as_str());
};
}
Expand Down
2 changes: 1 addition & 1 deletion pqcrypto-mldsa/src/ffi.rs
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@
//! * ml-dsa-87
// This file has been generated from PQClean.
// Find the templates in pqcrypto-template
use libc::c_int;
use core::ffi::c_int;

// ensures we link correctly
#[allow(unused_imports)]
Expand Down
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