根据已有的EA复制一份

1. I am currently using an Expert Advisor (EA) that performs well; I need a duplicate version with identical parameters.

2. Authorization functionality: Must include authorization management capabilities, allowing me to grant access to others (e.g., setting authorization duration and usage permissions) and revoke such access at will.

3. Source code requirements: Must provide complete, editable source code. I must have the freedom to modify all parameters and strategy logic, and full ownership of the source code shall belong to me permanently.

4. Security assurance: The author must not retain control over or access to the source code, must not remotely interfere with the script's operation, and must not keep backups or retain any operational permissions. Measures must be taken to completely eliminate the risk of source code leakage or tampering.