cyfryngau
Cyfryngau is a term originating from Welsh, often translated as "cyphers" or "secret writings." It refers to a system of encoding or encrypting messages to make them unintelligible to unauthorized individuals. Historically, such methods were employed for various purposes, including military communication, personal correspondence, and clandestine activities.
The practice of cyfryngau can encompass a wide range of techniques. Simple forms might involve substituting
The study and practice of cyfryngau are closely related to cryptology, the broader field encompassing both