pub unsafe extern "C" fn botan_pwdhash_timed(
    algo: *const c_char,
    msec: u32,
    param1: *mut usize,
    param2: *mut usize,
    param3: *mut usize,
    out: *mut u8,
    out_len: usize,
    passphrase: *const c_char,
    passphrase_len: usize,
    salt: *const u8,
    salt_len: usize
) -> c_int