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FR937926A - Encryption and decryption method and machine for implementing this method - Google Patents

Encryption and decryption method and machine for implementing this method

Info

Publication number
FR937926A
FR937926A FR937926DA FR937926A FR 937926 A FR937926 A FR 937926A FR 937926D A FR937926D A FR 937926DA FR 937926 A FR937926 A FR 937926A
Authority
FR
France
Prior art keywords
encryption
implementing
machine
decryption
decryption method
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
Marc-Marie-Lo Heriard-Dubreuil
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 FR937926A publication Critical patent/FR937926A/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
    • G09C1/06—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 wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member
    • G09C1/14—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 wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member involving removable or interchangeable coding numbers, e.g. master tapes, punched cards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR937926D 1946-11-22 1946-11-22 Encryption and decryption method and machine for implementing this method Expired FR937926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR937926T 1946-11-22

Publications (1)

Publication Number Publication Date
FR937926A true FR937926A (en) 1948-08-31

Family

ID=9458192

Family Applications (1)

Application Number Title Priority Date Filing Date
FR937926D Expired FR937926A (en) 1946-11-22 1946-11-22 Encryption and decryption method and machine for implementing this method

Country Status (1)

Country Link
FR (1) FR937926A (en)

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