Function KT256

pub unsafe extern "C" fn KT256(
    input: *const c_uchar,
    inputByteLen: usize,
    output: *mut c_uchar,
    outputByteLen: usize,
    customization: *const c_uchar,
    customByteLen: usize,
) -> c_int

Wrapper around KangarooTwelve to use the 256-bit security level.