60c205b33d1892104e13685fd5e801da481163b7
1 use std
::rand
::{ OsRng
, Rng
};
3 use std
::slice
::bytes
::copy_memory
;
4 use openssl
::crypto
::hash
::SHA256
;
5 use openssl
::crypto
::hmac
::HMAC
;
6 use openssl
::crypto
::symm
;
8 static KEY_A
: &'
static [u8] = [125, 31, 131, 118, 143, 180, 252, 53, 211, 217, 79, 240, 128, 91, 252, 87, 104, 236, 145, 198, 163, 203, 161, 12, 53, 56, 218, 40, 221, 95, 171, 140];
9 static KEY_C
: &'
static [u8] = [75, 226, 88, 31, 223, 216, 182, 216, 178, 58, 59, 193, 245, 80, 254, 128, 125, 246, 246, 224, 194, 190, 123, 123, 10, 131, 217, 183, 112, 157, 166, 102];
11 pub fn compute_mac(data
: &[u8]) -> [u8, ..10] {
12 let mut hmac
= HMAC(SHA256
, KEY_A
);
14 let mut result
= [0u8, ..10];
15 copy_memory(&mut result
, hmac
.finalize().slice(0, 9));
19 pub fn encrypt(plaindata
: &[u8], iv
: &[u8]) -> Vec
<u8> {
20 symm
::encrypt(symm
::AES_256_CBC
, KEY_C
, iv
.to_vec(), plaindata
)
23 pub fn decrypt(cypherdata
: &[u8], iv
: &[u8]) -> Vec
<u8> {
24 symm
::decrypt(symm
::AES_256_CBC
, KEY_C
, iv
.to_vec(), cypherdata
)
27 pub fn generate_key(size_byte
: uint
) -> IoResult
<Vec
<u8>> {
28 let mut bytes
= Vec
:: from_elem(size_byte
, 0u8);
29 let mut generator
= try!(OsRng
::new()); // Uses '/dev/urandom' on Unix-like systems.
30 generator
.fill_bytes(bytes
.as_mut_slice_());