TERMIUM Plus®

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double-key substitution [1 record]

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Record 1 1988-03-11

English

Subject field(s)
  • Intelligence (Military)
  • Handwriting Analysis and Cryptography
OBS

Most modern substitution ciphers are of the "double-substitution" type, in which a different cipher alphabet is used to encipher each successive letter of the clear text.

French

Domaine(s)
  • Renseignement (Militaire)
  • Graphologie et cryptographie
DEF

substitution dans laquelle chaque lettre (unité de chiffrement) est chiffrée à l'aide de deux clefs : une clef simple de substitution (clef de rang); une clef déterminant l'ordre d'emploi de cette clef simple de substitution (clef principale).

Spanish

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