src/aes.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

use openssl;
use std::collections::HashSet;

pub fn decrypt_aes_128_ecb (bytes: &[u8], key: &[u8]) -> Vec<u8> {
    return openssl::crypto::symm::decrypt(
        openssl::crypto::symm::Type::AES_128_ECB,
        key,
        vec![],
        bytes
    )
}

pub fn find_aes_128_ecb_encrypted_string (inputs: &[Vec<u8>]) -> Vec<u8> {
    let mut max_dups = 0;
    let mut found = vec![];
    for input in inputs {
        let mut set = HashSet::new();
        let mut dups = 0;
        for block in input.chunks(16) {
            if !set.insert(block) {
                dups += 1;
            }
        }
        if dups > max_dups {
            max_dups = dups;
            found = input.clone();
        }
    }
    return found;
}