The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 324
... plaintext are inscribed on a sheet underneath the perforated design . Usually the grille is revolved 90 degrees in ... plaintext letters to be enciphered ; and a cipher component , in which are found the ciphertext equivalents of the ...
... plaintext are inscribed on a sheet underneath the perforated design . Usually the grille is revolved 90 degrees in ... plaintext letters to be enciphered ; and a cipher component , in which are found the ciphertext equivalents of the ...
Page 325
... plaintext - letter column . Thus , plaintext D in the key of F is cipher I ; or , in cryptologic notation , D ( FK ) = Ic . Instead of direct standard alphabets , as in the original Vigenčre table , the alphabets may be reversed ...
... plaintext - letter column . Thus , plaintext D in the key of F is cipher I ; or , in cryptologic notation , D ( FK ) = Ic . Instead of direct standard alphabets , as in the original Vigenčre table , the alphabets may be reversed ...
Page 326
... plaintext into biliteral ( or sometimes triliteral ) equivalents , that are then subjected to a further encipherment , usually transposition . The following bipartite square and the encipherment of a message in vertical dinomes under ...
... plaintext into biliteral ( or sometimes triliteral ) equivalents , that are then subjected to a further encipherment , usually transposition . The following bipartite square and the encipherment of a message in vertical dinomes under ...
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activity American animals appear areas authority become body called cause cells central century charge common complex conservation consists constant constitution consumer contain continental continued copper cosmic rays countries court crime criminal Crusade direct early effect electron elements energy England established Europe evidence example exist fact field force ground groups House important increase individual industrial involved Italy known land later less letters limited living major material means measure ment metal natural occur organic original particles particular party percent period person play political population position present problems protection reefs region remains result rule social South species structure theory tion United usually various