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FR75316E - Process for the production of encrypted periodic tapes of extremely long period - Google Patents

Process for the production of encrypted periodic tapes of extremely long period

Info

Publication number
FR75316E
FR75316E FR788799A FR788799A FR75316E FR 75316 E FR75316 E FR 75316E FR 788799 A FR788799 A FR 788799A FR 788799 A FR788799 A FR 788799A FR 75316 E FR75316 E FR 75316E
Authority
FR
France
Prior art keywords
tapes
encrypted
periodic
production
long period
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
FR788799A
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 FR788799A priority Critical patent/FR75316E/en
Application granted granted Critical
Publication of FR75316E publication Critical patent/FR75316E/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR788799A 1955-01-26 1959-03-09 Process for the production of encrypted periodic tapes of extremely long period Expired FR75316E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR788799A FR75316E (en) 1955-01-26 1959-03-09 Process for the production of encrypted periodic tapes of extremely long period

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
FR788799A FR75316E (en) 1955-01-26 1959-03-09 Process for the production of encrypted periodic tapes of extremely long period

Publications (1)

Publication Number Publication Date
FR75316E true FR75316E (en) 1961-06-09

Family

ID=27512089

Family Applications (1)

Application Number Title Priority Date Filing Date
FR788799A Expired FR75316E (en) 1955-01-26 1959-03-09 Process for the production of encrypted periodic tapes of extremely long period

Country Status (1)

Country Link
FR (1) FR75316E (en)

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