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use rand::{FromEntropy, Rng};
mod util;
#[test]
fn problem_17() {
let strings = [
&b"MDAwMDAwTm93IHRoYXQgdGhlIHBhcnR5IGlzIGp1bXBpbmc="[..],
&b"MDAwMDAxV2l0aCB0aGUgYmFzcyBraWNrZWQgaW4gYW5kIHRoZSBWZWdhJ3MgYXJlIHB1bXBpbic="[..],
&b"MDAwMDAyUXVpY2sgdG8gdGhlIHBvaW50LCB0byB0aGUgcG9pbnQsIG5vIGZha2luZw=="[..],
&b"MDAwMDAzQ29va2luZyBNQydzIGxpa2UgYSBwb3VuZCBvZiBiYWNvbg=="[..],
&b"MDAwMDA0QnVybmluZyAnZW0sIGlmIHlvdSBhaW4ndCBxdWljayBhbmQgbmltYmxl"[..],
&b"MDAwMDA1SSBnbyBjcmF6eSB3aGVuIEkgaGVhciBhIGN5bWJhbA=="[..],
&b"MDAwMDA2QW5kIGEgaGlnaCBoYXQgd2l0aCBhIHNvdXBlZCB1cCB0ZW1wbw=="[..],
&b"MDAwMDA3SSdtIG9uIGEgcm9sbCwgaXQncyB0aW1lIHRvIGdvIHNvbG8="[..],
&b"MDAwMDA4b2xsaW4nIGluIG15IGZpdmUgcG9pbnQgb2g="[..],
&b"MDAwMDA5aXRoIG15IHJhZy10b3AgZG93biBzbyBteSBoYWlyIGNhbiBibG93"[..],
];
let key = util::random_aes_128_key();
static mut CHOSEN_PLAINTEXT_IDX: usize = 0;
let encrypter = || {
let idx = rand::thread_rng().gen_range(0, strings.len());
let plaintext = base64::decode(strings[idx]).unwrap();
unsafe { CHOSEN_PLAINTEXT_IDX = idx };
let iv = util::random_aes_128_key();
return (
iv,
matasano::encrypt_aes_128_cbc(&plaintext[..], &key[..], &iv[..]),
);
};
let validator = |iv: &[u8], ciphertext: &[u8]| {
let plaintext =
matasano::decrypt_aes_128_cbc(ciphertext, &key[..], &iv[..]);
return plaintext.is_some();
};
let (iv, ciphertext) = encrypter();
for _ in 0..5 {
let plaintext = matasano::crack_cbc_padding_oracle(
&iv[..],
&ciphertext[..],
&validator,
);
let idx = unsafe { CHOSEN_PLAINTEXT_IDX.clone() };
let expected = base64::decode(strings[idx]).unwrap();
assert_eq!(plaintext, expected);
}
}
#[test]
fn problem_18() {
let ciphertext = base64::decode(
&b"L77na/nrFsKvynd6HzOoG7GHTLXsTVu9qvY/2syL\
XzhPweyyMTJULu/6/kXX0KSvoOLSFQ=="[..],
)
.unwrap();
let plaintext =
&b"Yo, VIP Let's kick it Ice, Ice, baby Ice, Ice, baby "[..];
let got = matasano::aes_128_ctr(&ciphertext[..], b"YELLOW SUBMARINE", 0);
assert_eq!(got, plaintext);
}
// #[test]
// fn problem_19 () {
// let key = util::random_aes_128_key();
// let ciphertexts = util::read_as_base64_lines("data/19.txt")
// .iter()
// .map(|line| matasano::aes_128_ctr(&line[..], &key[..], 0))
// .collect();
// let plaintexts = matasano::crack_fixed_nonce_ctr_substitutions();
// }
#[test]
fn problem_20() {
fn normalize(line_list: Vec<Vec<u8>>, len: usize) -> Vec<Vec<u8>> {
line_list
.iter()
.map(|line| line.to_ascii_lowercase())
.map(|line| line.iter().take(len).map(|x| *x).collect())
.collect()
}
let key = util::random_aes_128_key();
let ciphertexts = util::read_as_base64_lines("data/20.txt")
.iter()
.map(|line| matasano::aes_128_ctr(&line[..], &key[..], 0))
.collect();
let expected = util::read_as_lines("data/20.out.txt");
let plaintexts =
matasano::crack_fixed_nonce_ctr_statistically(ciphertexts);
assert_eq!(normalize(plaintexts, 27), normalize(expected, 27));
}
#[test]
fn problem_21() {
let mut mt = matasano::MersenneTwister::from_u32(0x12345678);
let got: Vec<u32> = mt
.sample_iter(&rand::distributions::Standard)
.take(10)
.collect();
let expected: Vec<u32> = vec![
0xC6979343, 0x0962D2FA, 0xA73A24A4, 0xE118A180, 0xB5475ABB,
0x64613C7C, 0x6F32F4DB, 0xF27BF199, 0x464DD8DC, 0x95C1FED6,
];
assert_eq!(&got[..], &expected[..]);
}
#[test]
fn problem_22() {
// std::thread::sleep_ms(rand::thread_rng().gen_range(40, 1000) * 1000);
let seed = util::now();
let mut mt = matasano::MersenneTwister::from_u32(seed);
// std::thread::sleep_ms(rand::thread_rng().gen_range(40, 1000) * 1000);
let output: u32 = mt.gen();
let got =
matasano::recover_mersenne_twister_seed_from_time(output).unwrap();
assert_eq!(got, seed);
}
#[test]
fn problem_23() {
let mut mt = matasano::MersenneTwister::from_entropy();
let outputs: Vec<u32> = mt
.sample_iter(&rand::distributions::Standard)
.take(624)
.collect();
let mut mt2 = matasano::clone_mersenne_twister_from_output(&outputs[..]);
for _ in 1..1000 {
assert_eq!(mt.gen::<u32>(), mt2.gen::<u32>());
}
}
#[test]
fn problem_24() {
let key: u16 = rand::thread_rng().gen();
let fixed_suffix = b"AAAAAAAAAAAAAA";
let plaintext: Vec<u8> = rand::thread_rng()
.sample_iter(&rand::distributions::Standard)
.take(rand::thread_rng().gen_range(0, 32))
.chain(fixed_suffix.iter().map(|x| *x))
.collect();
let ciphertext =
matasano::mt19937_stream_cipher(&plaintext[..], key as u32);
let got = matasano::recover_16_bit_mt19937_key(
&ciphertext[..],
&fixed_suffix[..],
)
.unwrap();
assert_eq!(got, key);
}
#[test]
fn problem_24_part_2() {
let seed = util::now();
let mut mt = matasano::MersenneTwister::from_u32(seed);
let token: Vec<u8> = mt
.sample_iter(&rand::distributions::Standard)
.take(16)
.collect();
let got = matasano::recover_mt19937_key_from_time(&token[..]).unwrap();
assert_eq!(got, seed);
}
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