Function hash_tools::fixed_output_hash

pub fn fixed_output_hash<H, R>(
    reader: R,
    iter_num: u64
) -> Result<[u8; <H::OutputSize>::USIZE]>where
    H: Digest + FixedOutput + OutputSizeUser + Write,
    R: Read,
    GenericArray<u8, H::OutputSize>: From<[u8; <H::OutputSize>::USIZE]> + Into<[u8; <H::OutputSize>::USIZE]>,