Origins The invention of telegraphy radically changed military communications and increased the number of messages that needed to be protected from the enemy dramatically, leading to the development of field ciphers which had to be easy to use without large confidential codebooks prone to capture on the battlefield. It was this environment which led to the development of Kerckhoffs' requirements.
Origins The invention of telegraphy radically changed military communications and increased the number of messages that needed to be protected from the enemy dramatically leading to the development of field ciphers which, had to be easy to use without large confidential codebooks prone to capture on the battlefield. It was this environment which led to the development of Kerckhoffs' requirements.