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FR75082E - Method and apparatus for producing periodic extremely long period code strips - Google Patents

Method and apparatus for producing periodic extremely long period code strips

Info

Publication number
FR75082E
FR75082E FR787517A FR787517A FR75082E FR 75082 E FR75082 E FR 75082E FR 787517 A FR787517 A FR 787517A FR 787517 A FR787517 A FR 787517A FR 75082 E FR75082 E FR 75082E
Authority
FR
France
Prior art keywords
long period
extremely long
period code
producing periodic
code strips
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
FR787517A
Other languages
French (fr)
Inventor
Rudolf Hell
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
Priority claimed from DEH22812A external-priority patent/DE1012635B/en
Application filed filed Critical
Priority to FR787517A priority Critical patent/FR75082E/en
Application granted granted Critical
Publication of FR75082E publication Critical patent/FR75082E/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
    • G09C1/10—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 the connections being electrical
    • G09C1/12—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 the connections being electrical comprising contact-bearing permutation discs

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR787517A 1955-01-26 1959-02-21 Method and apparatus for producing periodic extremely long period code strips Expired FR75082E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR787517A FR75082E (en) 1955-01-26 1959-02-21 Method and apparatus for producing periodic extremely long period code strips

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEH22812A DE1012635B (en) 1955-01-26 1955-01-26 Process for the production of key strips with extremely long periods for key machines and device for carrying out the process
DEH0032464 1958-02-21
DEH32627A DE1095312B (en) 1955-01-26 1958-03-08 Device for the production of extended key sequences with a very long period for mixing devices for encryption and decryption
DEH33620A DE1095876B (en) 1955-01-26 1958-06-21 Method and device for encryption and decryption of messages to be transmitted via teleprinter
FR787517A FR75082E (en) 1955-01-26 1959-02-21 Method and apparatus for producing periodic extremely long period code strips

Publications (1)

Publication Number Publication Date
FR75082E true FR75082E (en) 1961-03-24

Family

ID=27512088

Family Applications (1)

Application Number Title Priority Date Filing Date
FR787517A Expired FR75082E (en) 1955-01-26 1959-02-21 Method and apparatus for producing periodic extremely long period code strips

Country Status (1)

Country Link
FR (1) FR75082E (en)

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