1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
#![no_std]
extern crate generic_array;
use generic_array::GenericArray;
use generic_array::typenum::U64;
use core::mem;
type BlockSize = U64;
type Block = GenericArray<u8, BlockSize>;
#[link(name="sha1", kind="static")]
extern "C" {
fn sha1_compress(state: &mut [u32; 5], block: &[u8; 64]);
}
#[inline]
pub fn compress(state: &mut [u32; 5], block: &Block) {
unsafe {
sha1_compress(state, mem::transmute(block));
}
}