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FR628788A - Secret telegraphy system - Google Patents

Secret telegraphy system

Info

Publication number
FR628788A
FR628788A FR628788DA FR628788A FR 628788 A FR628788 A FR 628788A FR 628788D A FR628788D A FR 628788DA FR 628788 A FR628788 A FR 628788A
Authority
FR
France
Prior art keywords
secret
telegraphy system
telegraphy
secret telegraphy
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
Francois Cartier
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 FR628788A publication Critical patent/FR628788A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/38—Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lock And Its Accessories (AREA)
  • Near-Field Transmission Systems (AREA)
FR628788D 1926-04-23 1926-04-23 Secret telegraphy system Expired FR628788A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1868967X 1926-04-23
FR32851T 1926-08-03

Publications (1)

Publication Number Publication Date
FR628788A true FR628788A (en) 1927-10-28

Family

ID=26182631

Family Applications (2)

Application Number Title Priority Date Filing Date
FR628788D Expired FR628788A (en) 1926-04-23 1926-04-23 Secret telegraphy system
FR32851D Expired FR32851E (en) 1926-04-23 1926-08-03 Secret telegraphy system

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR32851D Expired FR32851E (en) 1926-04-23 1926-08-03 Secret telegraphy system

Country Status (3)

Country Link
US (2) US1868967A (en)
BE (2) BE344473A (en)
FR (2) FR628788A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767367C (en) * 1939-05-11 1952-06-19 Lorenz A G C Encryption device for the temporal exchange of five-alphabet-impulses

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2539556A (en) * 1941-07-11 1951-01-30 Bell Telephone Labor Inc Variable delay speech privacy system
US2552548A (en) * 1943-03-06 1951-05-15 William F Friedman Facsimile enciphering system
US2465367A (en) * 1943-03-12 1949-03-29 William F Friedman System for enciphering facsimiles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767367C (en) * 1939-05-11 1952-06-19 Lorenz A G C Encryption device for the temporal exchange of five-alphabet-impulses

Also Published As

Publication number Publication date
FR32851E (en) 1928-03-06
BE341583A (en)
US1767121A (en) 1930-06-24
BE344473A (en)
US1868967A (en) 1932-07-26

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