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#![cfg(test)]
use hex_literal::hex;
use serde::Deserialize;
pub(crate) type TestCase<'a, const N: usize> = ([u8; N], [u8; 16], [u8; 16]);
pub(crate) static AES_128_TESTS: &[TestCase<'_, 16>] = &[
(
hex!("2b7e151628aed2a6abf7158809cf4f3c"),
hex!("3243f6a8885a308d313198a2e0370734"),
hex!("3925841d02dc09fbdc118597196a0b32"),
),
(
hex!("000102030405060708090a0b0c0d0e0f"),
hex!("00112233445566778899aabbccddeeff"),
hex!("69c4e0d86a7b0430d8cdb78070b4c55a"),
),
];
pub(crate) static AES_192_TESTS: &[TestCase<'_, 24>] = &[(
hex!("000102030405060708090a0b0c0d0e0f1011121314151617"),
hex!("00112233445566778899aabbccddeeff"),
hex!("dda97ca4864cdfe06eaf70a0ec0d7191"),
)];
pub(crate) static AES_256_TESTS: &[TestCase<'_, 32>] = &[(
hex!("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"),
hex!("00112233445566778899aabbccddeeff"),
hex!("8ea2b7ca516745bfeafc49904b496089"),
)];
impl TestVectors {
pub fn load() -> Self {
static DATA: &str =
include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/testdata/acvp.json"));
serde_json::from_str(DATA).unwrap()
}
}
#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct TestVectors {
pub test_groups: Vec<TestGroup>,
}
#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct TestGroup {
pub direction: String,
#[serde(flatten)]
pub tests: Tests,
}
#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "UPPERCASE")]
#[serde(tag = "testType", content = "tests")]
pub(crate) enum Tests {
Aft(Vec<Aft>),
Mct(Vec<Mct>),
}
#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct Aft {
pub tc_id: usize,
#[serde(with = "hex::serde")]
pub pt: Vec<u8>,
#[serde(with = "hex::serde")]
pub key: Vec<u8>,
#[serde(with = "hex::serde")]
pub ct: Vec<u8>,
}
#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct Mct {
pub tc_id: usize,
#[serde(with = "hex::serde")]
pub key: Vec<u8>,
#[serde(with = "hex::serde")]
#[serde(default = "Vec::new")]
pub pt: Vec<u8>,
#[serde(with = "hex::serde")]
#[serde(default = "Vec::new")]
pub ct: Vec<u8>,
pub results_array: Vec<MctResult>,
}
#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct MctResult {
#[serde(with = "hex::serde")]
pub key: Vec<u8>,
#[serde(with = "hex::serde")]
pub pt: Vec<u8>,
#[serde(with = "hex::serde")]
pub ct: Vec<u8>,
}
macro_rules! impl_acvp {
($name:ident, $aes:ty) => {
#[test]
fn $name() {
use $crate::{
as_chunks_mut,
tests::{Aft, Mct, TestVectors, Tests},
};
let vectors = TestVectors::load();
for group in vectors.test_groups {
match group.tests {
Tests::Aft(tests) => {
for Aft { tc_id, pt, key, ct } in tests {
let aes = <$aes>::new(&key);
let mut got = pt.clone();
let (blocks, tail) = as_chunks_mut::<_, BLOCK_SIZE>(&mut got);
assert!(tail.is_empty());
for block in blocks.iter_mut() {
aes.encrypt_block(block);
}
assert_eq!(blocks.as_flattened(), ct, "#{tc_id}");
for block in blocks.iter_mut() {
aes.decrypt_block(block);
}
assert_eq!(blocks.as_flattened(), pt, "#{tc_id}");
aes.encrypt_blocks(blocks);
assert_eq!(blocks.as_flattened(), ct, "#{tc_id}");
aes.decrypt_blocks(blocks);
assert_eq!(blocks.as_flattened(), pt, "#{tc_id}");
}
}
Tests::Mct(tests) => {
for Mct {
tc_id,
mut key,
mut pt,
mut ct,
results_array,
..
} in tests
{
fn key_shuffle(key: &mut [u8], current: &[u8], prev: &[u8]) {
match key.len() {
16 => {
for (dst, src) in key.iter_mut().zip(¤t[..16]) {
*dst ^= *src;
}
}
24 => {
let (lhs, rhs) = key.split_at_mut(8);
for (dst, src) in
lhs.iter_mut().zip(&prev[prev.len() - 8..])
{
*dst ^= *src;
}
for (dst, src) in rhs.iter_mut().zip(¤t[..16]) {
*dst ^= *src;
}
}
32 => {
let (lhs, rhs) = key.split_at_mut(16);
for (dst, src) in lhs.iter_mut().zip(&prev[..16]) {
*dst ^= *src;
}
for (dst, src) in rhs.iter_mut().zip(¤t[..16]) {
*dst ^= *src;
}
}
n => panic!("invalid key length: {n}"),
}
}
let mut pt = {
let (blocks, rest) = as_chunks_mut::<_, BLOCK_SIZE>(&mut pt);
assert!(rest.is_empty());
blocks.to_vec()
};
let mut ct = {
let (blocks, rest) = as_chunks_mut::<_, BLOCK_SIZE>(&mut ct);
assert!(rest.is_empty());
blocks.to_vec()
};
let encrypt = group.direction == "encrypt";
let mut prev = Vec::new();
for i in 0..100 {
assert_eq!(key, results_array[i].key, "#{tc_id},{i}");
if encrypt {
assert_eq!(
pt.as_flattened(),
results_array[i].pt,
"#{tc_id},{i}"
);
} else {
assert_eq!(
ct.as_flattened(),
results_array[i].ct,
"#{tc_id},{i}"
);
}
for j in 0..1000 {
if j == 999 {
prev.truncate(0);
if encrypt {
prev.extend_from_slice(&ct);
} else {
prev.extend_from_slice(&pt);
}
}
let aes = <$aes>::new(&key);
if encrypt {
aes.encrypt_blocks(&mut pt);
ct = pt.clone();
} else {
aes.decrypt_blocks(&mut ct);
pt = ct.clone();
}
}
let current = if encrypt {
ct.as_flattened()
} else {
pt.as_flattened()
};
key_shuffle(&mut key, current, prev.as_flattened());
if encrypt {
assert_eq!(
ct.as_flattened(),
results_array[i].ct,
"#{tc_id},{i}"
);
} else {
assert_eq!(
pt.as_flattened(),
results_array[i].pt,
"#{tc_id},{i}"
);
}
}
}
}
}
}
}
};
}
pub(crate) use impl_acvp;
macro_rules! impl_test_aes {
($name:ident) => {
#[derive(Clone, Debug)]
enum $name {
Aes128(Aes128),
Aes192(Aes192),
Aes256(Aes256),
}
impl $name {
pub fn new(key: &[u8]) -> Self {
match key.len() {
16 => Self::Aes128(Aes128::new(key.try_into().unwrap())),
24 => Self::Aes192(Aes192::new(key.try_into().unwrap())),
32 => Self::Aes256(Aes256::new(key.try_into().unwrap())),
n => panic!("invalid key length: {n}"),
}
}
pub fn encrypt_block(&self, block: &mut Block) {
match self {
Self::Aes128(aes) => aes.encrypt_block(block),
Self::Aes192(aes) => aes.encrypt_block(block),
Self::Aes256(aes) => aes.encrypt_block(block),
}
}
pub fn encrypt_blocks(&self, blocks: &mut [Block]) {
match self {
Self::Aes128(aes) => aes.encrypt_blocks(blocks),
Self::Aes192(aes) => aes.encrypt_blocks(blocks),
Self::Aes256(aes) => aes.encrypt_blocks(blocks),
}
}
pub fn decrypt_block(&self, block: &mut Block) {
match self {
Self::Aes128(aes) => aes.decrypt_block(block),
Self::Aes192(aes) => aes.decrypt_block(block),
Self::Aes256(aes) => aes.decrypt_block(block),
}
}
pub fn decrypt_blocks(&self, blocks: &mut [Block]) {
match self {
Self::Aes128(aes) => aes.decrypt_blocks(blocks),
Self::Aes192(aes) => aes.decrypt_blocks(blocks),
Self::Aes256(aes) => aes.decrypt_blocks(blocks),
}
}
}
};
}
pub(crate) use impl_test_aes;