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kex.rs
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kex.rs
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use pqc_kyber::*;
mod utils;
use utils::*;
// Kyber struct uake and ake functions
#[test]
fn uake_valid() {
let mut rng = rand::thread_rng();
let mut alice = Uake::new();
let mut bob = Uake::new();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let server_send = bob
.server_receive(client_init, &bob_keys.secret, &mut rng)
.unwrap();
alice.client_confirm(server_send).unwrap();
assert_eq!(alice.shared_secret, bob.shared_secret);
}
// Corrupted ciphertext sent to bob, 4 bytes modified
#[test]
fn uake_invalid_client_init_ciphertext() {
let mut rng = rand::thread_rng();
let mut alice = Uake::new();
let mut bob = Uake::new();
let bob_keys = keypair(&mut rng).unwrap();
let mut client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
client_init[KYBER_PUBLICKEYBYTES..][..4].copy_from_slice(&[255u8; 4]);
assert!(!bob
.server_receive(client_init, &bob_keys.secret, &mut rng)
.is_err());
assert_ne!(alice.shared_secret, bob.shared_secret);
}
// Corrupted public key sent to bob, detected by Alice
#[test]
fn uake_invalid_client_init_publickey() {
let mut rng = rand::thread_rng();
let mut alice = Uake::new();
let mut bob = Uake::new();
let bob_keys = keypair(&mut rng).unwrap();
let mut client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
client_init[..4].copy_from_slice(&[255u8; 4]);
let server_send = bob
.server_receive(client_init, &bob_keys.secret, &mut rng)
.unwrap();
assert!(!alice.client_confirm(server_send).is_err());
assert_ne!(alice.shared_secret, bob.shared_secret);
}
// Corrupted ciphertext sent back to Alice
#[test]
fn uake_invalid_server_send_ciphertext() {
let mut rng = rand::thread_rng();
let mut alice = Uake::new();
let mut bob = Uake::new();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let mut server_send = bob
.server_receive(client_init, &bob_keys.secret, &mut rng)
.unwrap();
server_send[..4].copy_from_slice(&[255u8; 4]);
assert!(!alice.client_confirm(server_send).is_err());
assert_ne!(alice.shared_secret, bob.shared_secret);
}
// Same tests for AKE
#[test]
fn ake_valid() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let mut bob = Ake::new();
let alice_keys = keypair(&mut rng).unwrap();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let server_send = bob
.server_receive(client_init, &alice_keys.public, &bob_keys.secret, &mut rng)
.unwrap();
let _client_confirm = alice
.client_confirm(server_send, &alice_keys.secret)
.unwrap();
assert_eq!(alice.shared_secret, bob.shared_secret);
}
#[test]
fn ake_invalid_client_init_ciphertext() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let mut bob = Ake::new();
let alice_keys = keypair(&mut rng).unwrap();
let bob_keys = keypair(&mut rng).unwrap();
let mut client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
client_init[KYBER_PUBLICKEYBYTES..][..4].copy_from_slice(&[255u8; 4]);
assert!(!bob
.server_receive(client_init, &alice_keys.public, &bob_keys.secret, &mut rng)
.is_err());
assert_ne!(alice.shared_secret, bob.shared_secret);
}
#[test]
fn ake_invalid_client_init_publickey() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let mut bob = Ake::new();
let alice_keys = keypair(&mut rng).unwrap();
let bob_keys = keypair(&mut rng).unwrap();
let mut client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
client_init[..4].copy_from_slice(&[255u8; 4]);
let server_send = bob
.server_receive(client_init, &alice_keys.public, &bob_keys.secret, &mut rng)
.unwrap();
assert!(!alice
.client_confirm(server_send, &alice_keys.secret)
.is_err());
assert_ne!(alice.shared_secret, bob.shared_secret);
}
#[test]
fn ake_invalid_server_send_first_ciphertext() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let mut bob = Ake::new();
let alice_keys = keypair(&mut rng).unwrap();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let mut server_send = bob
.server_receive(client_init, &alice_keys.public, &bob_keys.secret, &mut rng)
.unwrap();
server_send[..4].copy_from_slice(&[255u8; 4]);
assert!(!alice
.client_confirm(server_send, &alice_keys.secret)
.is_err());
assert_ne!(alice.shared_secret, bob.shared_secret);
}
#[test]
fn ake_invalid_server_send_second_ciphertext() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let mut bob = Ake::new();
let alice_keys = keypair(&mut rng).unwrap();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let mut server_send = bob
.server_receive(client_init, &alice_keys.public, &bob_keys.secret, &mut rng)
.unwrap();
server_send[KYBER_CIPHERTEXTBYTES..][..4].copy_from_slice(&[255u8; 4]);
// assert!(alice.client_confirm(server_send, &alice_keys.secret).is_err());
}
// Rng function fails on keypair
#[test]
fn ake_uake_failed_randombytes_keypair() {
let mut rng = FailingRng::default();
assert_eq!(keypair(&mut rng), Err(KyberError::RandomBytesGeneration));
}
// Rng function fails on Alice's client init function
#[test]
fn uake_failed_randombytes_client_init() {
let mut rng = rand::thread_rng();
let mut alice = Uake::new();
let bob_keys = keypair(&mut rng).unwrap();
let mut rng = FailingRng::default();
assert_eq!(
alice.client_init(&bob_keys.public, &mut rng),
Err(KyberError::RandomBytesGeneration)
);
}
// Rng function fails on Bob's server receive function
#[test]
fn uake_failed_randombytes_server_receive() {
let mut rng = rand::thread_rng();
let mut alice = Uake::new();
let mut bob = Uake::new();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let mut rng = FailingRng::default();
assert_eq!(
bob.server_receive(client_init, &bob_keys.secret, &mut rng),
Err(KyberError::RandomBytesGeneration)
);
}
#[test]
fn ake_failed_randombytes_client_init() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let bob_keys = keypair(&mut rng).unwrap();
let mut rng = FailingRng::default();
assert_eq!(
alice.client_init(&bob_keys.public, &mut rng),
Err(KyberError::RandomBytesGeneration)
);
}
#[test]
fn ake_failed_randombytes_server_receive() {
let mut rng = rand::thread_rng();
let mut alice = Ake::new();
let mut bob = Ake::new();
let alice_keys = keypair(&mut rng).unwrap();
let bob_keys = keypair(&mut rng).unwrap();
let client_init = alice.client_init(&bob_keys.public, &mut rng).unwrap();
let mut rng = FailingRng::default();
assert_eq!(
bob.server_receive(client_init, &alice_keys.public, &bob_keys.secret, &mut rng),
Err(KyberError::RandomBytesGeneration)
)
}