mirror of
https://github.com/BLAKE3-team/BLAKE3
synced 2024-09-20 19:41:38 +02:00
e06a0f255a
The biggest change here is that assembly implementations are enabled by default. Added features: - "pure" (Pure Rust, with no C or assembly implementations.) Removed features: - "c" (Now basically the default.) Renamed features; - "c_prefer_intrinsics" -> "prefer_intrinsics" - "c_neon" -> "neon" Unchanged: - "rayon" - "std" (Still the only feature on by default.)
115 lines
2.8 KiB
Rust
115 lines
2.8 KiB
Rust
use crate::{CVWords, IncrementCounter, BLOCK_LEN, OUT_LEN};
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// Unsafe because this may only be called on platforms supporting SSE4.1.
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pub unsafe fn compress_in_place(
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cv: &mut CVWords,
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block: &[u8; BLOCK_LEN],
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block_len: u8,
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counter: u64,
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flags: u8,
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) {
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ffi::blake3_compress_in_place_sse41(cv.as_mut_ptr(), block.as_ptr(), block_len, counter, flags)
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}
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// Unsafe because this may only be called on platforms supporting SSE4.1.
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pub unsafe fn compress_xof(
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cv: &CVWords,
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block: &[u8; BLOCK_LEN],
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block_len: u8,
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counter: u64,
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flags: u8,
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) -> [u8; 64] {
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let mut out = [0u8; 64];
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ffi::blake3_compress_xof_sse41(
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cv.as_ptr(),
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block.as_ptr(),
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block_len,
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counter,
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flags,
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out.as_mut_ptr(),
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);
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out
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}
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// Unsafe because this may only be called on platforms supporting SSE4.1.
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pub unsafe fn hash_many<A: arrayvec::Array<Item = u8>>(
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inputs: &[&A],
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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_sse41(
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inputs.as_ptr() as *const *const u8,
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inputs.len(),
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A::CAPACITY / 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_compress_in_place_sse41(
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cv: *mut u32,
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block: *const u8,
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block_len: u8,
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counter: u64,
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flags: u8,
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);
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pub fn blake3_compress_xof_sse41(
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cv: *const u32,
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block: *const u8,
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block_len: u8,
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counter: u64,
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flags: u8,
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out: *mut u8,
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);
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pub fn blake3_hash_many_sse41(
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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_compress() {
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if !crate::platform::sse41_detected() {
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return;
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}
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crate::test::test_compress_fn(compress_in_place, compress_xof);
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}
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#[test]
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fn test_hash_many() {
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if !crate::platform::sse41_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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