cipherlike

From cipher +‎ -like.

cipherlike (comparative more cipherlike, superlative most cipherlike)

1. Resembling or characteristic of a cipher.
   • 2007 December 9, Maud Casey, “Escape From New York, Nev.”, in New York Times‎^[1]:

     This is the only mention of swastikas, and it's as if Nersesian is making up the rules as he goes along — all too possible with a cipherlike narrator whose memory is shot.