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CH530742A - Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen - Google Patents

Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen

Info

Publication number
CH530742A
CH530742A CH1259270A CH1259270A CH530742A CH 530742 A CH530742 A CH 530742A CH 1259270 A CH1259270 A CH 1259270A CH 1259270 A CH1259270 A CH 1259270A CH 530742 A CH530742 A CH 530742A
Authority
CH
Switzerland
Prior art keywords
pulse sequences
generating key
key pulse
generating
sequences
Prior art date
Application number
CH1259270A
Other languages
English (en)
Inventor
Kurt Dipl Ing Ehrat
Original Assignee
Ciba Geigy Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciba Geigy Ag filed Critical Ciba Geigy Ag
Priority to CH1259270A priority Critical patent/CH530742A/de
Priority to US00172135A priority patent/US3740475A/en
Priority to CA120,708A priority patent/CA947661A/en
Priority to SE1052471A priority patent/SE375673B/xx
Priority to FR7130598A priority patent/FR2107065A5/fr
Priority to DE19712142413 priority patent/DE2142413C3/de
Priority to GB3975971A priority patent/GB1364518A/en
Publication of CH530742A publication Critical patent/CH530742A/de

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
    • H04L9/06—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
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CH1259270A 1970-08-24 1970-08-24 Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen CH530742A (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CH1259270A CH530742A (de) 1970-08-24 1970-08-24 Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen
US00172135A US3740475A (en) 1970-08-24 1971-08-16 Apparatus for producing coding pulse sequences
CA120,708A CA947661A (en) 1970-08-24 1971-08-17 Apparatus for producing coding pulse sequences
SE1052471A SE375673B (de) 1970-08-24 1971-08-18
FR7130598A FR2107065A5 (de) 1970-08-24 1971-08-23
DE19712142413 DE2142413C3 (de) 1970-08-24 1971-08-24 Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen
GB3975971A GB1364518A (en) 1970-08-24 1971-08-24 Message encoding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1259270A CH530742A (de) 1970-08-24 1970-08-24 Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen

Publications (1)

Publication Number Publication Date
CH530742A true CH530742A (de) 1972-11-15

Family

ID=4384505

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1259270A CH530742A (de) 1970-08-24 1970-08-24 Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen

Country Status (2)

Country Link
US (1) US3740475A (de)
CH (1) CH530742A (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878331A (en) * 1972-10-20 1975-04-15 Barrie O Morgan Digital cryptographic system and method
USRE30957E (en) * 1973-10-15 1982-06-01 International Business Machines Corporation Variant key matrix cipher system
US4078152A (en) * 1976-04-26 1978-03-07 International Business Machines Corporation Block-cipher cryptographic system with chaining
US4133973A (en) * 1976-11-10 1979-01-09 Datotek, Inc. Digital cryptographic system having synchronous and asynchronous capabilities
GB1597218A (en) * 1976-12-11 1981-09-03 Nat Res Dev Apparatus for electronic encypherment of digital data
US4172213A (en) * 1977-11-17 1979-10-23 Burroughs Corporation Byte stream selective encryption/decryption device
EP0028272A1 (de) * 1979-11-03 1981-05-13 PATELHOLD Patentverwertungs- & Elektro-Holding AG Verfahren und Einrichtung zur verschlüsselten Nachrichtenübertragung
US5500899A (en) * 1982-05-20 1996-03-19 The United States Of America As Represented By The Director, Nsa Secure voice conferencing apparatus
US4791669A (en) * 1985-11-30 1988-12-13 Nec Corporation Encryption/decryption system
US5454039A (en) * 1993-12-06 1995-09-26 International Business Machines Corporation Software-efficient pseudorandom function and the use thereof for encryption
GB201420783D0 (en) * 2014-11-22 2015-01-07 Savine Stanislav Systems and methods of transmitting and encrypting information

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515805A (en) * 1967-02-06 1970-06-02 Bell Telephone Labor Inc Data scrambler
US3627928A (en) * 1969-02-04 1971-12-14 Litton Systems Inc Telegraph privacy system
US3681708A (en) * 1969-04-29 1972-08-01 Bendix Corp Pseudo-random frequency generator

Also Published As

Publication number Publication date
US3740475A (en) 1973-06-19

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Legal Events

Date Code Title Description
PL Patent ceased