FR23481E - Encryption and decryption device for telegraph system - Google Patents
Encryption and decryption device for telegraph systemInfo
- Publication number
- FR23481E FR23481E FR23481A FR23481DA FR23481E FR 23481 E FR23481 E FR 23481E FR 23481 A FR23481 A FR 23481A FR 23481D A FR23481D A FR 23481DA FR 23481 E FR23481 E FR 23481E
- Authority
- FR
- France
- Prior art keywords
- encryption
- decryption device
- telegraph system
- telegraph
- decryption
- 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
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
-
- 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Handling Of Sheets (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US146520XA | 1918-09-13 | 1918-09-13 | |
US265307A US1356546A (en) | 1918-12-04 | 1918-12-04 | Ciphering system |
US146991XA | 1918-12-09 | 1918-12-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR23481E true FR23481E (en) | 1921-11-30 |
Family
ID=31721325
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR524197A Expired FR524197A (en) | 1918-09-13 | 1920-06-23 | Encryption and decryption device for telegraph system |
FR23481A Expired FR23481E (en) | 1918-09-13 | 1920-06-25 | Encryption and decryption device for telegraph system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR524197A Expired FR524197A (en) | 1918-09-13 | 1920-06-23 | Encryption and decryption device for telegraph system |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE355393C (en) |
FR (2) | FR524197A (en) |
GB (3) | GB146520A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974447C (en) * | 1943-05-15 | 1960-12-29 | Normalzeit G M B H | Encryption device |
-
1920
- 1920-06-06 DE DE1920B0094391 patent/DE355393C/en not_active Expired
- 1920-06-23 FR FR524197A patent/FR524197A/en not_active Expired
- 1920-06-25 FR FR23481A patent/FR23481E/en not_active Expired
- 1920-07-05 GB GB18644/20A patent/GB146520A/en not_active Expired
- 1920-07-06 GB GB18913/20A patent/GB146991A/en not_active Expired
- 1920-07-06 GB GB18912/20A patent/GB146990A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB146520A (en) | 1921-09-29 |
DE355393C (en) | 1922-06-26 |
FR524197A (en) | 1921-08-31 |
GB146991A (en) | 1921-09-22 |
GB146990A (en) | 1921-09-08 |
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