SE363450

An apparatus for enciphering and deciphering multidigit coded signals, comprising a key generator and an input storage, both said key generator and input storage being connected with a mixing stage. The mixing stage serves to couple in character element fashion signals delivered from the input storage with signals delivered from the key generator. This input storage contains a first storage stage with a number of individual stores in which there can be stored in character element fashion a number of successive signals corresponding to the number of individual stores. A comparison detector responds to the majority of the similar type character elements of the same digit or place value recorded at the individual stores by producing a majority signal. This detector is connected with the second storage stage of the input storage and said second storage stage receives the majority signal produced by the individual stores of the first storage stage.