A person who enciphers or creates codes and ciphers; someone who encrypts messages.
From 'encipher' plus the agent noun suffix '-er', meaning 'one who does the action'. Similar to how 'teach' becomes 'teacher', 'encipher' becomes 'encipherer'.
Before computers, every military and spy agency employed hundreds of encipherers—skilled people who by hand would convert sensitive messages into codes using wheels, tables, and mathematical rules—it was meticulous, painstaking work that required brilliance and incredible attention to detail.
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