pub unsafe extern "C" fn pk_encrypt( ctx: *mut pk_context, input: *const c_uchar, ilen: size_t, output: *mut c_uchar, olen: *mut size_t, osize: size_t, f_rng: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: *mut c_uchar, arg3: size_t) -> c_int>, p_rng: *mut c_void) -> c_int
