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ml-kem: partial riscv32 support for cargo checkct #411

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Merged
tarcieri merged 1 commit into from
Oct 29, 2026
Merged

ml-kem: partial riscv32 support for cargo checkct #411

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3 changes: 1 addition & 2 deletions ml-kem/checkct/.cargo/config.toml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
[build]
target = [
# TODO(tarcieri): full encapsulation exceeds analysis budget on `riscv32`
# "riscv32imac-unknown-none-elf",
"riscv32imac-unknown-none-elf",
"thumbv6m-none-eabi",
"thumbv7em-none-eabihf",
"x86_64-unknown-linux-gnu",
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7 changes: 6 additions & 1 deletion ml-kem/checkct/driver/src/driver.rs
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Original file line number Diff line number Diff line change
@@ -1,12 +1,15 @@
use crate::rng::{PrivateRng, PublicRng};
use checkct_macros::checkct;
use core::hint::black_box;
use ml_kem::{B32, EncapsulationKey};

macro_rules! check_encapsulation {
($name:ident, $kem:ident, $key_len:expr) => {
// TODO: enable on RISC-V once full encapsulation fits the analysis budget.
#[cfg(not(target_arch = "riscv32"))]
#[checkct]
pub fn $name() {
use ml_kem::{B32, EncapsulationKey};

// The generated BINSEC script references both RNG hooks.
black_box(PublicRng.next_u32());

Expand Down Expand Up @@ -45,6 +48,8 @@ pub fn small_reduce_u32() {
// Expanded-key import avoids treating key generation's public rho as secret.
macro_rules! check_decapsulation {
($name:ident, $kem:ident, $sk_len:expr, $fixture:literal) => {
// TODO: enable on RISC-V once full decapsulation fits the analysis budget.
#[cfg(not(target_arch = "riscv32"))]
#[checkct]
#[allow(deprecated)]
pub fn $name() {
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