Function blake3_long 

pub fn blake3_long(data: &[u8], len: usize) -> Vec<u8> 

Available on (crate features hash-blake3 or hash-sha2) and crate feature hash-blake3 only.

Compute a BLAKE3 digest of arbitrary length via the extendable-output function (XOF) mode.

len may be any value, including zero. The output is deterministic in data — different inputs produce uncorrelated outputs, identical inputs produce identical outputs.

For the common 32-byte case prefer blake3() — it skips the XOF reader path entirely.

Example

use crypt_io::hash;
let d = hash::blake3_long(b"abc", 64);
assert_eq!(d.len(), 64);