Rust: Add test cases for hardcoded cryptographic constants in cookies.

rust/ql/test/query-tests/security/CWE-798/options.yml

@@ -8,3 +8,5 @@ qltest_dependencies:
     - base64 = { version = "0.22.1" }
     - getrandom = { version = "0.3.1" }
     - getrandom2 = { package = "getrandom", version = "0.2.15" }
+    - cookie = { version = "0.18.1", features = ["signed", "private"] }
+    - biscotti = { version = "0.4.3" }

rust/ql/test/query-tests/security/CWE-798/test_cookie.rs

@@ -0,0 +1,58 @@
+
+use cookie::{CookieJar, SignedJar, PrivateJar, Key};
+
+// --- tests ---
+
+fn test_cookie_jar(array_var: &[u8]) {
+    let mut jar = CookieJar::new();
+
+    let key_generate = Key::generate(); // good
+    _ = jar.signed_mut(&key_generate);
+    _ = jar.private_mut(&key_generate);
+
+    let key_var = Key::from(array_var); // good
+    _ = jar.signed_mut(&key_var);
+    _ = jar.private_mut(&key_var);
+
+    let array1: [u8; 64] = [0; 64]; // $ MISSING: Alert[rust/hard-coded-cryptographic-value]
+    let key1 = Key::from(&array1);
+    _ = jar.signed_mut(&key1); // $ MISSING: Sink
+
+    let array2: [u8; 64] = [0; 64]; // $ MISSING: Alert[rust/hard-coded-cryptographic-value]
+    let key2 = Key::from(&array2);
+    _ = jar.private_mut(&key2); // $ MISSING: Sink
+}
+
+fn test_biscotti_crypto(array_var: &[u8]) {
+    let mut config1 = biscotti::ProcessorConfig::default();
+    let crypto_rules1 = biscotti::config::CryptoRule {
+        cookie_names: vec!["name".to_string()],
+        algorithm: biscotti::config::CryptoAlgorithm::Signing,
+        key: biscotti::Key::generate(), // good
+        fallbacks: vec![],
+    };
+    config1.crypto_rules.push(crypto_rules1);
+    let processor1: biscotti::Processor = config1.into();
+
+    let mut config2 = biscotti::ProcessorConfig::default();
+    let array2 = Vec::from([0u8; 64]); // $ MISSING: Alert[rust/hard-coded-cryptographic-value]
+    let crypto_rules2 = biscotti::config::CryptoRule {
+        cookie_names: vec!["name".to_string()],
+        algorithm: biscotti::config::CryptoAlgorithm::Signing,
+        key: biscotti::Key::from(array2), // $ MISSING: Sink
+        fallbacks: vec![],
+    };
+    config2.crypto_rules.push(crypto_rules2);
+    let processor2: biscotti::Processor = config2.into();
+
+    let mut config3 = biscotti::ProcessorConfig::default();
+    let array3 = vec![0u8; 64]; // $ MISSING: Alert[rust/hard-coded-cryptographic-value]
+    let crypto_rules3 = biscotti::config::CryptoRule {
+        cookie_names: vec!["name".to_string()],
+        algorithm: biscotti::config::CryptoAlgorithm::Signing,
+        key: biscotti::Key::from(array3), // $ MISSING: Sink
+        fallbacks: vec![],
+    };
+    config3.crypto_rules.push(crypto_rules3);
+    let processor3: biscotti::Processor = config3.into();
+}