Merge pull request #215 from keldonin/implement_session_copy_object

Implement Session.copy_object()

cryptoki/src/session/object_management.rs

@@ -94,6 +94,42 @@ impl Session {
         }
     }
 
+    /// Copy an object
+    ///
+    /// A template can be provided to change some attributes of the new object, when allowed.
+    ///
+    /// # Arguments
+    ///
+    /// * `object` - The [ObjectHandle] used to reference the object to copy
+    /// * `template` - new values for any attributes of the object that can ordinarily be modified
+    ///   check out [PKCS#11 documentation](https://docs.oasis-open.org/pkcs11/pkcs11-spec/v3.1/cs01/pkcs11-spec-v3.1-cs01.html#_Toc111203284) for details
+    ///
+    /// # Returns
+    ///
+    /// This function will return a new [ObjectHandle] that references the newly created object.
+    ///
+    pub fn copy_object(
+        &self,
+        object: ObjectHandle,
+        template: &[Attribute],
+    ) -> Result<ObjectHandle> {
+        let mut template: Vec<CK_ATTRIBUTE> = template.iter().map(|attr| attr.into()).collect();
+        let mut object_handle = 0;
+
+        unsafe {
+            Rv::from(get_pkcs11!(self.client(), C_CopyObject)(
+                self.handle(),
+                object.handle(),
+                template.as_mut_ptr(),
+                template.len().try_into()?,
+                &mut object_handle as CK_OBJECT_HANDLE_PTR,
+            ))
+            .into_result(Function::CopyObject)?;
+        }
+
+        Ok(ObjectHandle::new(object_handle))
+    }
+
     /// Get the attribute info of an object: if the attribute is present and its size.
     ///
     /// # Arguments

cryptoki/tests/basic.rs

@@ -893,6 +893,56 @@ fn ro_rw_session_test() -> TestResult {
     Ok(())
 }
 
+#[test]
+#[serial]
+fn session_copy_object() -> TestResult {
+    let aes128_template = [
+        Attribute::Class(ObjectClass::SECRET_KEY),
+        Attribute::KeyType(KeyType::AES),
+        Attribute::Encrypt(true),
+        Attribute::Token(false),
+        Attribute::Private(true),
+        Attribute::Sensitive(true),
+        Attribute::Extractable(false),
+        Attribute::ValueLen(16.into()),
+        Attribute::Label("original".as_bytes().to_vec()),
+    ];
+
+    let copy_template = vec![Attribute::Label("copy".as_bytes().to_vec())];
+
+    let insecure_copy_template = vec![Attribute::Extractable(true)];
+
+    let (pkcs11, slot) = init_pins();
+
+    // open a session
+    let rw_session = pkcs11.open_rw_session(slot)?;
+
+    // log in the session
+    rw_session.login(UserType::User, Some(&AuthPin::new(USER_PIN.into())))?;
+
+    // create a key object
+    let object = rw_session.generate_key(&Mechanism::AesKeyGen, &aes128_template)?;
+
+    // copy the object without a template
+    let copy = rw_session.copy_object(object, &[])?;
+    rw_session.destroy_object(copy)?;
+
+    // copy the object with a template
+    let copy = rw_session.copy_object(object, &copy_template)?;
+    rw_session.destroy_object(copy)?;
+
+    // try the copy with the insecure template. It should fail. Returning CKR_OK is considered a failure.
+    rw_session
+        .copy_object(object, &insecure_copy_template)
+        .unwrap_err();
+
+    // delete keys
+    rw_session.destroy_object(object)?;
+    rw_session.logout()?;
+
+    Ok(())
+}
+
 #[test]
 #[serial]
 fn aes_cbc_encrypt() -> TestResult {