Final answer:
Kerckhoffs's Principle states that one should never trust the secrecy of a cipher or the obscurity of an algorithm for the security of a cryptographic system.
Step-by-step explanation:
Kerckhoffs's Principle states that one should never trust the secrecy of a cipher or the obscurity of an algorithm for the security of a cryptographic system. In other words, a good cryptographic system should rely on the strength of the key rather than the secrecy of the system itself.