FR2072409A5 - - Google Patents
Info
- Publication number
- FR2072409A5 FR2072409A5 FR7042396A FR7042396A FR2072409A5 FR 2072409 A5 FR2072409 A5 FR 2072409A5 FR 7042396 A FR7042396 A FR 7042396A FR 7042396 A FR7042396 A FR 7042396A FR 2072409 A5 FR2072409 A5 FR 2072409A5
- Authority
- FR
- France
- Prior art keywords
- code
- secret
- supplementary
- coding
- parts
- 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
- G09C1/14—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 involving removable or interchangeable coding numbers, e.g. master tapes, punched cards
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1773669A CH516854A (de) | 1969-11-29 | 1969-11-29 | Verfahren und Vorrichtung zur chiffrierten Übermittlung von Informationen |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2072409A5 true FR2072409A5 (fr) | 1971-09-24 |
Family
ID=4427698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7042396A Expired FR2072409A5 (fr) | 1969-11-29 | 1970-11-25 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3711645A (fr) |
CA (1) | CA922233A (fr) |
CH (1) | CH516854A (fr) |
DE (1) | DE2058285C3 (fr) |
FR (1) | FR2072409A5 (fr) |
GB (1) | GB1318921A (fr) |
SE (1) | SE360535B (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3808355A (en) * | 1972-06-27 | 1974-04-30 | Cutler Hammer Inc | Secret signaling system |
US3784743A (en) * | 1972-08-23 | 1974-01-08 | Bell Telephone Labor Inc | Parallel data scrambler |
US3813493A (en) * | 1972-12-07 | 1974-05-28 | P Hughes | Secure data transmission apparatus |
US3911216A (en) * | 1973-12-17 | 1975-10-07 | Honeywell Inf Systems | Nonlinear code generator and decoder for transmitting data securely |
US4107458A (en) * | 1976-08-23 | 1978-08-15 | Constant James N | Cipher computer and cryptographic system |
US4341925A (en) * | 1978-04-28 | 1982-07-27 | Nasa | Random digital encryption secure communication system |
GB2020513B (en) * | 1978-05-03 | 1982-12-22 | Atalla Technovations | Method and apparatus for securing data transmissions |
US4223403A (en) * | 1978-06-30 | 1980-09-16 | International Business Machines Corporation | Cryptographic architecture for use with a high security personal identification system |
DE2943726C2 (de) * | 1979-10-30 | 1984-06-07 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verfahren und Einrichtung zur Ver- und Entschlüsselung von Daten |
IL63102A (en) * | 1980-06-19 | 1984-03-30 | Oak Industries Inc | System for enciphering messages |
US4531021A (en) * | 1980-06-19 | 1985-07-23 | Oak Industries Inc. | Two level encripting of RF signals |
DE3207040A1 (de) * | 1982-02-26 | 1983-09-08 | Siemens AG, 1000 Berlin und 8000 München | Vefahren und anordnung zum uebertragen von zeichen |
DE3410937A1 (de) * | 1984-03-24 | 1985-10-03 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zum erkennen der unerlaubten benutzung einer indentifizierung |
US4747139A (en) * | 1984-08-27 | 1988-05-24 | Taaffe James L | Software security method and systems |
DE3534416A1 (de) * | 1985-09-27 | 1987-04-02 | Detlef Keiler | Verfahren zur sicherung von datenuebertragungen |
US4791669A (en) * | 1985-11-30 | 1988-12-13 | Nec Corporation | Encryption/decryption system |
WO2000052690A1 (fr) * | 1999-02-26 | 2000-09-08 | Hitachi, Ltd. | Enregistreur, lecteur et support d'enregistrement de signal numerique |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH402937A (de) * | 1961-08-18 | 1965-11-30 | Gretag Ag | Verfahren zur Verschlüsselung von impulsförmig übertragenen Nachrichten |
US3614316A (en) * | 1964-05-20 | 1971-10-19 | Us Navy | Secure communication system |
CH439820A (de) * | 1964-11-06 | 1967-07-15 | Gretag Ag | Verfahren und Einrichtung zur Ver- und Entschlüsselung von Nachrichtensignalen |
CH435363A (de) * | 1965-11-26 | 1967-05-15 | Patelhold Patentverwertung | Einrichtung zur Synchronisierung von Impulsgeneratoren |
-
1969
- 1969-11-29 CH CH1773669A patent/CH516854A/de not_active IP Right Cessation
-
1970
- 1970-11-23 US US00091790A patent/US3711645A/en not_active Expired - Lifetime
- 1970-11-24 CA CA098939A patent/CA922233A/en not_active Expired
- 1970-11-25 FR FR7042396A patent/FR2072409A5/fr not_active Expired
- 1970-11-26 DE DE2058285A patent/DE2058285C3/de not_active Expired
- 1970-11-26 GB GB5627470A patent/GB1318921A/en not_active Expired
- 1970-11-27 SE SE16121/70A patent/SE360535B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE2058285C3 (de) | 1980-03-06 |
DE2058285A1 (de) | 1971-06-03 |
GB1318921A (en) | 1973-05-31 |
SE360535B (fr) | 1973-09-24 |
DE2058285B2 (de) | 1979-06-28 |
CH516854A (de) | 1971-12-15 |
US3711645A (en) | 1973-01-16 |
CA922233A (en) | 1973-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |