The transmission of a secret code by the operator of an amateur radio station:

Amateur radio is inherently a public and open service designed for transparent communication. Regulations in Canada and globally strictly forbid the use of ciphers, encryption, or secret codes intended to obscure the meaning of a transmission. This prohibition applies at all times and under all circumstances. There are no exemptions for contests, third-party traffic, or special events. Even when using digital modes, the encoding protocol must be publicly published and freely available so that anyone can decode the message. Any attempt to hide the contents of a message from the general public or regulatory authorities is a direct violation of amateur radio licensing conditions.