The Secret to Unbreakable Security
True security does not come from hiding your blueprints. A system should remain secure even if an attacker knows exactly how it works, provided the specific key remains a secret.
Many people mistakenly believe that keeping the inner workings of a system hidden makes it safer, a concept known as security through obscurity. However, this is a dangerous illusion because secrets eventually leak or get reverse-engineered. By assuming the enemy already knows your methods, you are forced to build a robust system that truly protects your data. Modern encryption relies on this principle to ensure that only a small, changeable key stands between privacy and exposure.
Source: Kerckhoffs's principle