Struct SliceHasher 

pub struct SliceHasher { /* private fields */ }

Incremental MD5 + CRC32 over one input slice, zero-padded to slice_size.

use rust_par2::slice::SliceHasher;

let mut h = SliceHasher::new(8);
h.update(b"abc");
h.update(b"de");
let sum = h.finish(); // checksums of b"abcde\0\0\0"
assert_eq!(sum, SliceHasher::checksum(b"abcde", 8));

Implementations

impl SliceHasher

pub fn new(slice_size: u64) -> Self

Start hashing a slice of a set whose slice size is slice_size.

pub fn update(&mut self, data: &[u8])

Feed the next bytes of the slice.

Bytes beyond slice_size are hashed too, so the result will not match any IFSC entry; callers should not pass more than one slice.

pub fn len(&self) -> u64

Bytes fed so far, before padding.

pub fn is_empty(&self) -> bool

Whether no bytes have been fed yet.

pub fn finish(self) -> SliceChecksum

Zero-pad to slice_size and return the checksum pair.

pub fn checksum(data: &[u8], slice_size: u64) -> SliceChecksum

Checksum a whole slice in one call.