SE7413087L - Anordning vid kryptering och dekryptering av information - Google Patents
Anordning vid kryptering och dekryptering av informationInfo
- Publication number
- SE7413087L SE7413087L SE7413087A SE7413087A SE7413087L SE 7413087 L SE7413087 L SE 7413087L SE 7413087 A SE7413087 A SE 7413087A SE 7413087 A SE7413087 A SE 7413087A SE 7413087 L SE7413087 L SE 7413087L
- Authority
- SE
- Sweden
- Prior art keywords
- series
- counters
- memory fields
- information
- bits
- 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
- H04L9/002—Countermeasures against attacks on cryptographic mechanisms
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/12—Details relating to cryptographic hardware or logic circuitry
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Storage Device Security (AREA)
- Facsimile Transmission Control (AREA)
- Read Only Memory (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7413087A SE385644B (sv) | 1974-10-17 | 1974-10-17 | Anordning vid kryptering och dekryptering av meddelanden |
US05/616,490 US4058673A (en) | 1974-10-17 | 1975-09-24 | Arrangement for ciphering and deciphering of information |
DE19752543880 DE2543880B2 (de) | 1974-10-17 | 1975-10-01 | Anordnung zum verschluesseln und entschluesseln einer nachricht |
NL7511954A NL7511954A (nl) | 1974-10-17 | 1975-10-10 | Inrichting voor het in cijfermatige vorm bren- gen van informatie of voor het terugvertalen van- uit de cijfermatige vorm. |
GB42089/75A GB1511543A (en) | 1974-10-17 | 1975-10-14 | Ciphering or deciphering a message |
CH1329075A CH599724A5 (sv) | 1974-10-17 | 1975-10-14 | |
FR7531720A FR2288428A1 (fr) | 1974-10-17 | 1975-10-16 | Dispositif de chiffrement et de dechiffrement d'informations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7413087A SE385644B (sv) | 1974-10-17 | 1974-10-17 | Anordning vid kryptering och dekryptering av meddelanden |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7413087L true SE7413087L (sv) | 1976-04-18 |
SE385644B SE385644B (sv) | 1976-07-12 |
Family
ID=20322441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7413087A SE385644B (sv) | 1974-10-17 | 1974-10-17 | Anordning vid kryptering och dekryptering av meddelanden |
Country Status (7)
Country | Link |
---|---|
US (1) | US4058673A (sv) |
CH (1) | CH599724A5 (sv) |
DE (1) | DE2543880B2 (sv) |
FR (1) | FR2288428A1 (sv) |
GB (1) | GB1511543A (sv) |
NL (1) | NL7511954A (sv) |
SE (1) | SE385644B (sv) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2304222A1 (fr) * | 1975-03-12 | 1976-10-08 | Cit Alcatel | Generateur de sequences numeriques pseudo-aleatoires |
DE2706421C2 (de) * | 1977-02-16 | 1979-03-15 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zum Einstellen von Schlüsseltextgeneratoren in Chiffriergeräten |
US4142240A (en) * | 1977-08-31 | 1979-02-27 | International Telephone & Telegraph Corp. | Agile code generator |
EP0028272A1 (de) * | 1979-11-03 | 1981-05-13 | PATELHOLD Patentverwertungs- & Elektro-Holding AG | Verfahren und Einrichtung zur verschlüsselten Nachrichtenübertragung |
US4369434A (en) * | 1979-12-20 | 1983-01-18 | Gretag Aktiengesellschaft | Enciphering/deciphering system |
US4408093A (en) * | 1981-06-05 | 1983-10-04 | Itt Industries, Inc. | Cryptographic encoder-decoder |
IE53125B1 (en) * | 1981-06-19 | 1988-07-06 | Marconi Co Ltd | Radio communications apparatus |
NL8202547A (nl) * | 1982-06-23 | 1984-01-16 | Philips Nv | Werkwijze voor het opwekken van een pseudo-random reeks van tekens met grote reekslengte. |
FR2582174B1 (fr) * | 1985-05-15 | 1990-03-09 | Thomson Csf | Dispositif de chiffrement par substitutions-permutations |
US4791669A (en) * | 1985-11-30 | 1988-12-13 | Nec Corporation | Encryption/decryption system |
US4782529A (en) * | 1986-09-02 | 1988-11-01 | Unisys Corporation | Decryption of messages employing unique control words and randomly chosen decryption keys |
US4809327A (en) * | 1986-09-02 | 1989-02-28 | Unisys Corporation | Encrtption of messages employing unique control words and randomly chosen encryption keys |
WO1988001817A1 (en) * | 1986-09-02 | 1988-03-10 | Unisys Corporation | Stations for communicating with encrypted messages via randomly selected circularly stored keys |
GB9003999D0 (en) * | 1990-02-22 | 1990-04-18 | Enfranchise Sixty Ltd | Pseudo-random sequence generators |
US5796836A (en) * | 1995-04-17 | 1998-08-18 | Secure Computing Corporation | Scalable key agile cryptography |
JP3661663B2 (ja) * | 2002-04-19 | 2005-06-15 | 日本電気株式会社 | 乱数生成装置、乱数生成方法、乱数生成プログラムおよびオーディオ復号装置と復号方法 |
US7190791B2 (en) * | 2002-11-20 | 2007-03-13 | Stephen Laurence Boren | Method of encryption using multi-key process to create a variable-length key |
WO2005076515A1 (en) * | 2004-02-05 | 2005-08-18 | Research In Motion Limited | On-chip storage, creation, and manipulation of an encryption key |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3934078A (en) * | 1946-05-01 | 1976-01-20 | Bell Telephone Laboratories, Incorporated | Key generating system |
NL200501A (sv) * | 1955-01-26 | |||
US3496291A (en) * | 1966-06-17 | 1970-02-17 | Int Standard Electric Corp | Enciphering teleprinter text for telex channels |
US3703727A (en) * | 1971-06-18 | 1972-11-21 | Bell Telephone Labor Inc | Method for generating random numerical quantities |
US3796830A (en) * | 1971-11-02 | 1974-03-12 | Ibm | Recirculating block cipher cryptographic system |
US3751648A (en) * | 1971-12-01 | 1973-08-07 | Communications Satellite Corp | Generalized shift register pulse sequence generator |
US3761696A (en) * | 1972-02-16 | 1973-09-25 | Signetics Corp | Random integer generator and method |
US3878331A (en) * | 1972-10-20 | 1975-04-15 | Barrie O Morgan | Digital cryptographic system and method |
-
1974
- 1974-10-17 SE SE7413087A patent/SE385644B/sv not_active IP Right Cessation
-
1975
- 1975-09-24 US US05/616,490 patent/US4058673A/en not_active Expired - Lifetime
- 1975-10-01 DE DE19752543880 patent/DE2543880B2/de not_active Ceased
- 1975-10-10 NL NL7511954A patent/NL7511954A/xx not_active Application Discontinuation
- 1975-10-14 GB GB42089/75A patent/GB1511543A/en not_active Expired
- 1975-10-14 CH CH1329075A patent/CH599724A5/xx not_active IP Right Cessation
- 1975-10-16 FR FR7531720A patent/FR2288428A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2543880B2 (de) | 1977-09-22 |
US4058673A (en) | 1977-11-15 |
CH599724A5 (sv) | 1978-05-31 |
DE2543880A1 (de) | 1976-04-22 |
FR2288428A1 (fr) | 1976-05-14 |
SE385644B (sv) | 1976-07-12 |
NL7511954A (nl) | 1976-04-21 |
GB1511543A (en) | 1978-05-24 |
FR2288428B1 (sv) | 1980-01-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7413087-3 Effective date: 19941110 Format of ref document f/p: F |