FR943538A - Secret transmission device - Google Patents

Secret transmission device

Info

Publication number
FR943538A
FR943538A FR943538DA FR943538A FR 943538 A FR943538 A FR 943538A FR 943538D A FR943538D A FR 943538DA FR 943538 A FR943538 A FR 943538A
Authority
FR
France
Prior art keywords
transmission device
secret transmission
secret
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Albert-Henri-Rene-Ma Lescarts
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR943538A publication Critical patent/FR943538A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/04—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR943538D 1947-03-24 1947-03-24 Secret transmission device Expired FR943538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR943538T 1947-03-24

Publications (1)

Publication Number Publication Date
FR943538A true FR943538A (en) 1949-03-10

Family

ID=9471309

Family Applications (1)

Application Number Title Priority Date Filing Date
FR943538D Expired FR943538A (en) 1947-03-24 1947-03-24 Secret transmission device

Country Status (1)

Country Link
FR (1) FR943538A (en)

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