feat: add keychain-services

__security/keychain-services/src/main.rs

@@ -0,0 +1,34 @@
+use keychain_services::{AccessControl, AttrAccessible, AttrKeyClass,
+                        AttrKeyType, Key, keychain, KeyPair, KeyPairGenerateParams};
+
+fn main() {
+    let keypair = generate_keypair(
+        "rs.keychain-services.test.integration.query",
+        "keychain-services.rs integration test query key",
+    );
+
+    let private_key_query = keychain::item::Query::new()
+        .key_class(AttrKeyClass::Private)
+        .key_type(AttrKeyType::EcSecPrimeRandom)
+        .application_label(keypair.public_key.application_label().unwrap());
+
+    let private_key = Key::find(private_key_query).unwrap();
+
+    assert_eq!(
+        keypair.private_key.application_label(),
+        private_key.application_label()
+    );
+}
+
+fn generate_keypair(tag: &str, label: &str) -> KeyPair {
+    let acl =
+        AccessControl::create_with_flags(AttrAccessible::WhenUnlocked, Default::default()).unwrap();
+
+    let generate_params = KeyPairGenerateParams::new(AttrKeyType::EcSecPrimeRandom, 256)
+        .access_control(&acl)
+        .application_tag(tag)
+        .label(label)
+        .permanent(true);
+
+    KeyPair::generate(generate_params).unwrap()
+}