The Collaborative International Dictionary
Cipherer \Ci"pher*er\, n. One who ciphers.
Wiktionary
n. One who ciphers.
Usage examples of "cipherer".
Many cipherers preferred their simplicity to the complexity of the double transposition, and often used them for orders and other unauthorized messages.
She had seen riders carrying books to and from the castle, which meant that cipherers must be at work elsewhere in this kingdom.
Her study of the cipherers' Market, and particularly of the rulebooks used by the cipherers to respond to messages, had taught her that for all its complexity, it too was nothing more than another Turing machine.
Now, while I could explain to them pretty nearly everything else of the main features of your system, I should quite fail to answer this question, and failing there, they would tell me, for they were very close cipherers, that I had been dreaming.