use libc::*; extern "C" { pub fn RAND_bytes(buf: *mut u8, num: c_int) -> c_int; #[cfg(ossl111)] pub fn RAND_keep_random_devices_open(keep: c_int); pub fn RAND_status() -> c_int; pub fn RAND_add(buf: *const c_void, num: c_int, randomness: c_double); }