CH326802A - Telegraph equipment - Google Patents
Telegraph equipmentInfo
- Publication number
- CH326802A CH326802A CH326802DA CH326802A CH 326802 A CH326802 A CH 326802A CH 326802D A CH326802D A CH 326802DA CH 326802 A CH326802 A CH 326802A
- Authority
- CH
- Switzerland
- Prior art keywords
- telegraph equipment
- telegraph
- equipment
- Prior art date
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
-
- 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
- H04L9/36—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols with means for detecting characters not meant for transmission
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Document Processing Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US374848A US2789159A (en) | 1953-08-18 | 1953-08-18 | Translating device for transmitting and receiving coded messages |
Publications (1)
Publication Number | Publication Date |
---|---|
CH326802A true CH326802A (en) | 1957-12-31 |
Family
ID=23478442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH326802D CH326802A (en) | 1953-08-18 | 1955-07-28 | Telegraph equipment |
Country Status (2)
Country | Link |
---|---|
US (1) | US2789159A (en) |
CH (1) | CH326802A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675477A (en) * | 1964-05-13 | 1987-06-23 | The United States Of America As Represented By The Secretary Of The Army | Electronic device providing automatic permutations of a Vigenere Square |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB341073A (en) * | 1929-10-05 | 1931-01-05 | Richard Michel | New or improved telegraphic apparatus for secret transmissions |
BE381441A (en) * | 1930-07-18 | |||
US2269341A (en) * | 1938-11-08 | 1942-01-06 | Internat Code Machine Company | Message transmission device |
-
1953
- 1953-08-18 US US374848A patent/US2789159A/en not_active Expired - Lifetime
-
1955
- 1955-07-28 CH CH326802D patent/CH326802A/en unknown
Also Published As
Publication number | Publication date |
---|---|
US2789159A (en) | 1957-04-16 |
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