awful.rs

extern crate openssl_sys;
extern crate openssl;

use std::mem::{ transmute };
use openssl::hash::{ MessageDigest };
use openssl_sys::{ EVP_MD };

fn hash_something() {
  let mut vec: Vec<u8> = (0..255).collect();
  let slice: &mut [u8] = vec.as_mut_slice();
  let digest: MessageDigest = unsafe { MessageDigest::from_ptr(transmute<[u8], *EVP_MD>(slice)); };
  digest.sha512();
  println!("{}", transmute<*EVP_MD, str>(digest.as_ptr()));
}

fn main() {
  openssl::init();
  hash_something();
}