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Add 500k data and key validation and improvement for calculate models

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This commit is contained in:
hal8174 2025-07-08 22:05:42 +02:00
parent 8053532039
commit 0dedbd16a3
Signed by: hal8174
SSH key fingerprint: SHA256:JwuqS+eVfISfKr+DkDQ6NWAbGd1jFAHkPpCM1yCnlTs
3 changed files with 1000083 additions and 24 deletions
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500000
data/msgs-500k.txt Normal file
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500000
data/traces-500k.txt Normal file
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107
src/main.rs
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@ -32,34 +32,53 @@ static RSBOX: [u8; 256] = [
0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d,
];
static SBOX: [u8; 256] = [
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16,
];
fn calculate_models(ciphertexts: &[[u8; 16]]) -> Vec<[Vec<u8>; 16]> {
let mut r: Vec<[Vec<u8>; 16]> = (0..256)
.map(|_| {
[
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
Vec::with_capacity(ciphertexts.len()),
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
vec![0; ciphertexts.len()],
]
})
.collect();
for c in ciphertexts.iter() {
for k in 0..16 {
for j in 0..256 {
for k in 0..16 {
r[j][k].push(RSBOX[(c[k] ^ (j as u8)) as usize]);
for (i, c) in ciphertexts.iter().enumerate() {
r[j][k][i] = RSBOX[(c[k] ^ (j as u8)) as usize];
}
}
}
@ -67,7 +86,7 @@ fn calculate_models(ciphertexts: &[[u8; 16]]) -> Vec<[Vec<u8>; 16]> {
r
}
fn read_msgs(path: impl AsRef<Path>) -> Vec<[u8; 16]> {
fn read_msgs(path: impl AsRef<Path>) -> (Vec<[u8; 16]>, [u8; 16]) {
let file = std::fs::File::open(path).unwrap();
let mut bufreader = std::io::BufReader::new(file);
@ -75,8 +94,10 @@ fn read_msgs(path: impl AsRef<Path>) -> Vec<[u8; 16]> {
let mut line = [0; 66];
let mut r = Vec::new();
let mut key = [0; 16];
while bufreader.read_exact(&mut line).is_ok() {
let mut key = [0; 16];
key = [0; 16];
let mut msgs = [0; 16];
for i in 0..16 {
@ -93,7 +114,7 @@ fn read_msgs(path: impl AsRef<Path>) -> Vec<[u8; 16]> {
r.push(*block.as_ref());
}
r
(r, last_round_key(key))
}
const TRACES: usize = 87;
@ -177,6 +198,40 @@ fn correlation(
num / denom
}
fn last_round_key(mut key: [u8; 16]) -> [u8; 16] {
for i in 0..10 {
key = key_schedule(key, i);
}
key
}
fn key_schedule(mut key: [u8; 16], round: usize) -> [u8; 16] {
let rcon = [0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36];
let r = [key[13], key[14], key[15], key[12]];
let mut r = [
SBOX[r[0] as usize],
SBOX[r[1] as usize],
SBOX[r[2] as usize],
SBOX[r[3] as usize],
];
r[0] ^= rcon[round];
key[0] ^= r[0];
key[1] ^= r[1];
key[2] ^= r[2];
key[3] ^= r[3];
for i in 4..16 {
key[i] ^= key[i - 4];
}
key
}
#[derive(Debug, Parser)]
struct Args {
#[arg(default_value = "./alan/Task-3-example_traces/test_msgs.csv")]
@ -190,7 +245,7 @@ fn main() {
let args = Args::parse();
let start = std::time::Instant::now();
let cyphertext = read_msgs(args.msgs);
let (cyphertext, lrk) = read_msgs(args.msgs);
println!("read msgs: {:?}", start.elapsed());
let start = std::time::Instant::now();
@ -220,7 +275,11 @@ fn main() {
if a.1 > b.1 { a } else { b }
},
);
println!("bit: {bit}, key_hypothesis: {max_index}, max: {max}");
println!(
"bit: {bit:3}, key_hypothesis: {max_index:3}, max: {max:.5}, correct guess: {}",
lrk[bit / 8] == max_index as u8
);
}
println!("calculate correlations: {:?}", start.elapsed());
println!("total: {:?}", start_total.elapsed());