- 57 -
NON-CLASHING RULE :
(in Enigma). Rule or principle not permitting, or tending to avoid,
the same position for the same wheel on consecutive days.
NON-CRASHING :
misused for Non-clashing.
NON-CYCLIC :
Not treated as cyclic; using "carrying" addition.
NON-INDICATOR :
(esp. of German Army P/F) Having no indicator.
NON-MORSE :
1. Employing signals other than the morse code for the transmission of
messages spec. transmitted (or transmitting) in the teleprinter alphabet.
2. (of ciphers) especially, belonging to the Tunny or Sturgeon type
(which use the teleprinter a1phabet).
NON-REVERSIBLE :
(of bigrams in double Playfair with two squares). Characterized by
having an equivalent cipher bigram which is not its equivalent plain-
language bigram when it (i.e. the original bigram) is cipher; )a bigram
in which at least one of the substitutions used in enciphering it is
linear.
NON-TEXTUAL :
(of groups in cipher texts). Forming no part of the actual text as
e.g. indicating and check-groups.
NULL :
A dummy figure or letter; a filler.
OFFIZIER :
1. (of German cipher keys). Designed to be used by Officers only;
(opposed to General).
2. (of a message or part of a message). Enciphered on such a key
by an officer and subsequently re-enciphered on a general key.
OFFSET :
(of messages in depth or recurrences in these). Beginning or
occurring at different points of the subtractor key.
| previous page
| next page | index page |
