FR840927A - Cryptographic device - Google Patents
Cryptographic deviceInfo
- Publication number
- FR840927A FR840927A FR840927DA FR840927A FR 840927 A FR840927 A FR 840927A FR 840927D A FR840927D A FR 840927DA FR 840927 A FR840927 A FR 840927A
- Authority
- FR
- France
- Prior art keywords
- cryptographic device
- cryptographic
- 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
- G09C1/04—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 with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR840927T | 1938-01-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR840927A true FR840927A (en) | 1939-05-08 |
Family
ID=9304979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR840927D Expired FR840927A (en) | 1938-01-06 | 1938-01-06 | Cryptographic device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR840927A (en) |
-
1938
- 1938-01-06 FR FR840927D patent/FR840927A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR861267A (en) | Electro-acoustic device | |
FR862048A (en) | Piezoelectric device | |
FR848183A (en) | Tele-printing device | |
FR851428A (en) | Camera | |
CH219316A (en) | Hand-held telephone device. | |
FR49837E (en) | Cryptographic device | |
FR840927A (en) | Cryptographic device | |
FR850541A (en) | Orthopedic device | |
FR861443A (en) | Boiling device | |
FR847858A (en) | Detonator device | |
FR780763A (en) | Cryptographic device | |
FR849534A (en) | Shaving device | |
FR849670A (en) | Re-meshing device | |
FR841153A (en) | Re-meshing device | |
FR860325A (en) | Percussion device | |
FR858338A (en) | Printing device | |
FR856558A (en) | Moto-ski device | |
FR49308E (en) | Fumivorous device | |
FR830649A (en) | Drawing device | |
FR847932A (en) | Anesthetic device | |
FR850054A (en) | Polishing device | |
FR855659A (en) | Drawing device | |
FR832204A (en) | Security device | |
FR857834A (en) | Advertising device | |
FR839317A (en) | Recording device |