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add stubs for trng testing

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bunnie 2024-06-06 22:26:45 +08:00
parent d87f950da1
commit cafac2bda9
1 changed files with 22 additions and 0 deletions
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22
services/cram-hal-service/src/trng.rs
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@ -7,6 +7,7 @@ use rand_core::{CryptoRng, RngCore, SeedableRng};
const RESEED_INTERVAL: u32 = 32;
static RESEED: AtomicU32 = AtomicU32::new(0);
pub const TRNG_TEST_BUF_LEN: usize = 2048;
#[derive(Debug)]
pub struct Trng {
@ -73,6 +74,17 @@ impl Trng {
left.copy_from_slice(&chunk[..n]);
}
}
/// Sets the test mode according to the argument. Blocks until mode is set.
pub fn set_test_mode(&self, test_mode: api::TrngTestMode) {
log::info!("TODO: trng test mode setting: {:?}", test_mode);
}
/// Gets test data from the TRNG.
pub fn get_test_data(&self) -> Result<[u8; TRNG_TEST_BUF_LEN], xous::Error> {
log::info!("TODO: get test data");
Ok([0u8; TRNG_TEST_BUF_LEN])
}
}
impl RngCore for Trng {
@ -88,3 +100,13 @@ impl RngCore for Trng {
}
impl CryptoRng for Trng {}
pub mod api {
#[derive(Debug, num_derive::FromPrimitive, num_derive::ToPrimitive, PartialEq, Eq, Copy, Clone)]
pub enum TrngTestMode {
// No test mode configured. Whitened data is sampled.
None,
// Raw TRNG output.
Raw,
}
}