mirror of
https://github.com/BLAKE3-team/BLAKE3
synced 2024-05-07 09:46:16 +02:00
037de38bfe
This version uses const generics, which bumps our minimum supported compiler version to 1.51.
64 lines
1.5 KiB
Rust
64 lines
1.5 KiB
Rust
use crate::{CVWords, IncrementCounter, BLOCK_LEN, OUT_LEN};
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// Note that there is no AVX2 implementation of compress_in_place or
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// compress_xof.
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// Unsafe because this may only be called on platforms supporting AVX2.
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pub unsafe fn hash_many<const N: usize>(
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inputs: &[&[u8; N]],
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key: &CVWords,
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counter: u64,
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increment_counter: IncrementCounter,
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flags: u8,
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flags_start: u8,
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flags_end: u8,
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out: &mut [u8],
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) {
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// The Rust hash_many implementations do bounds checking on the `out`
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// array, but the C implementations don't. Even though this is an unsafe
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// function, assert the bounds here.
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assert!(out.len() >= inputs.len() * OUT_LEN);
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ffi::blake3_hash_many_avx2(
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inputs.as_ptr() as *const *const u8,
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inputs.len(),
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N / BLOCK_LEN,
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key.as_ptr(),
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counter,
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increment_counter.yes(),
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flags,
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flags_start,
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flags_end,
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out.as_mut_ptr(),
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)
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}
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pub mod ffi {
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extern "C" {
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pub fn blake3_hash_many_avx2(
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inputs: *const *const u8,
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num_inputs: usize,
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blocks: usize,
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key: *const u32,
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counter: u64,
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increment_counter: bool,
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flags: u8,
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flags_start: u8,
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flags_end: u8,
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out: *mut u8,
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);
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_hash_many() {
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if !crate::platform::avx2_detected() {
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return;
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}
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crate::test::test_hash_many_fn(hash_many, hash_many);
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}
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}
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