Function botan_sys::botan_kdf

pub unsafe extern "C" fn botan_kdf(
    kdf_algo: *const c_char,
    out: *mut u8,
    out_len: usize,
    secret: *const u8,
    secret_len: usize,
    salt: *const u8,
    salt_len: usize,
    label: *const u8,
    label_len: usize,
) -> c_int