ZA802984B - Cepher apparatus synchronisation checking - Google Patents
Cepher apparatus synchronisation checkingInfo
- Publication number
- ZA802984B ZA802984B ZA00802984A ZA802984A ZA802984B ZA 802984 B ZA802984 B ZA 802984B ZA 00802984 A ZA00802984 A ZA 00802984A ZA 802984 A ZA802984 A ZA 802984A ZA 802984 B ZA802984 B ZA 802984B
- Authority
- ZA
- South Africa
- Prior art keywords
- cepher
- synchronisation
- checking
- synchronisation checking
- cepher apparatus
- 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
- H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
-
- 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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Storage Device Security (AREA)
- Selective Calling Equipment (AREA)
- Electrophonic Musical Instruments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2920589A DE2920589C2 (en) | 1979-05-21 | 1979-05-21 | Method and circuit arrangement for checking the synchronism of two key devices |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA802984B true ZA802984B (en) | 1981-05-27 |
Family
ID=6071346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00802984A ZA802984B (en) | 1979-05-21 | 1980-05-20 | Cepher apparatus synchronisation checking |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0019756B1 (en) |
DE (1) | DE2920589C2 (en) |
DK (1) | DK179380A (en) |
NO (1) | NO801475L (en) |
ZA (1) | ZA802984B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8201077A (en) * | 1982-03-16 | 1983-10-17 | Philips Nv | A COMMUNICATION SYSTEM, CONTAINING A CENTRAL DATA PROCESSING DEVICE, ACCESS STATIONS AND EXTERNAL STATIONS, WHICH A CRYPTOGRAPHIC CHECK IS FORDICULARIZING AN EXTERNAL STATION, AND EXTERNAL STATIONS FOR USE IN SUCH A COMMUNITY. |
EP0162962B1 (en) * | 1984-05-29 | 1991-03-06 | Siemens Aktiengesellschaft | Method and apparatus for monitoring the synchronization of cryptographic devices |
DE3825880C1 (en) * | 1988-07-29 | 1995-12-21 | Siemens Ag | Key device |
DE4023534C1 (en) * | 1990-07-25 | 1991-11-21 | Siemens Ag, 8000 Muenchen, De |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2463502A (en) * | 1942-05-21 | 1949-03-08 | Tung Sol Lamp Works Inc | Method and system of secret communication |
DE1255705B (en) * | 1966-01-12 | 1967-12-07 | Telefunken Patent | Circuit arrangement for the secure transmission of binary coded data according to the echo method |
US3798605A (en) * | 1971-06-30 | 1974-03-19 | Ibm | Centralized verification system |
DE2631823C3 (en) * | 1976-07-15 | 1984-03-01 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Method for synchronizing key devices for data transmission systems |
US4193131A (en) * | 1977-12-05 | 1980-03-11 | International Business Machines Corporation | Cryptographic verification of operational keys used in communication networks |
-
1979
- 1979-05-21 DE DE2920589A patent/DE2920589C2/en not_active Expired
-
1980
- 1980-04-25 DK DK179380A patent/DK179380A/en unknown
- 1980-05-06 EP EP80102471A patent/EP0019756B1/en not_active Expired
- 1980-05-16 NO NO801475A patent/NO801475L/en unknown
- 1980-05-20 ZA ZA00802984A patent/ZA802984B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0019756A1 (en) | 1980-12-10 |
NO801475L (en) | 1980-11-24 |
DE2920589C2 (en) | 1981-06-11 |
EP0019756B1 (en) | 1983-03-30 |
DK179380A (en) | 1980-11-22 |
DE2920589B1 (en) | 1980-08-14 |
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