1use crate::{CVWords, IncrementCounter, BLOCK_LEN, OUT_LEN};
2
3// Unsafe because this may only be called on platforms supporting SSE4.1.
4pub unsafe fn compress_in_place(
5 cv: &mut CVWords,
6 block: &[u8; BLOCK_LEN],
7 block_len: u8,
8 counter: u64,
9 flags: u8,
10) {
11 ffi::blake3_compress_in_place_sse41(cv.as_mut_ptr(), block.as_ptr(), block_len, counter, flags)
12}
13
14// Unsafe because this may only be called on platforms supporting SSE4.1.
15pub unsafe fn compress_xof(
16 cv: &CVWords,
17 block: &[u8; BLOCK_LEN],
18 block_len: u8,
19 counter: u64,
20 flags: u8,
21) -> [u8; 64] {
22 let mut out: [u8; 64] = [0u8; 64];
23 ffi::blake3_compress_xof_sse41(
24 cv.as_ptr(),
25 block.as_ptr(),
26 block_len,
27 counter,
28 flags,
29 out.as_mut_ptr(),
30 );
31 out
32}
33
34// Unsafe because this may only be called on platforms supporting SSE4.1.
35pub unsafe fn hash_many<const N: usize>(
36 inputs: &[&[u8; N]],
37 key: &CVWords,
38 counter: u64,
39 increment_counter: IncrementCounter,
40 flags: u8,
41 flags_start: u8,
42 flags_end: u8,
43 out: &mut [u8],
44) {
45 // The Rust hash_many implementations do bounds checking on the `out`
46 // array, but the C implementations don't. Even though this is an unsafe
47 // function, assert the bounds here.
48 assert!(out.len() >= inputs.len() * OUT_LEN);
49 ffi::blake3_hash_many_sse41(
50 inputs.as_ptr() as *const *const u8,
51 num_inputs:inputs.len(),
52 N / BLOCK_LEN,
53 key.as_ptr(),
54 counter,
55 increment_counter.yes(),
56 flags,
57 flags_start,
58 flags_end,
59 out.as_mut_ptr(),
60 )
61}
62
63pub mod ffi {
64 extern "C" {
65 pub fn blake3_compress_in_place_sse41(
66 cv: *mut u32,
67 block: *const u8,
68 block_len: u8,
69 counter: u64,
70 flags: u8,
71 );
72 pub fn blake3_compress_xof_sse41(
73 cv: *const u32,
74 block: *const u8,
75 block_len: u8,
76 counter: u64,
77 flags: u8,
78 out: *mut u8,
79 );
80 pub fn blake3_hash_many_sse41(
81 inputs: *const *const u8,
82 num_inputs: usize,
83 blocks: usize,
84 key: *const u32,
85 counter: u64,
86 increment_counter: bool,
87 flags: u8,
88 flags_start: u8,
89 flags_end: u8,
90 out: *mut u8,
91 );
92 }
93}
94
95#[cfg(test)]
96mod test {
97 use super::*;
98
99 #[test]
100 fn test_compress() {
101 if !crate::platform::sse41_detected() {
102 return;
103 }
104 crate::test::test_compress_fn(compress_in_place, compress_xof);
105 }
106
107 #[test]
108 fn test_hash_many() {
109 if !crate::platform::sse41_detected() {
110 return;
111 }
112 crate::test::test_hash_many_fn(hash_many, hash_many);
113 }
114}
115