DE2154019C3 - Zufallskodegenerator - Google Patents

Zufallskodegenerator

Info

Publication number
DE2154019C3
DE2154019C3 DE2154019A DE2154019A DE2154019C3 DE 2154019 C3 DE2154019 C3 DE 2154019C3 DE 2154019 A DE2154019 A DE 2154019A DE 2154019 A DE2154019 A DE 2154019A DE 2154019 C3 DE2154019 C3 DE 2154019C3
Authority
DE
Germany
Prior art keywords
register
gate
random
code generator
signals
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
Application number
DE2154019A
Other languages
German (de)
English (en)
Other versions
DE2154019A1 (de
DE2154019B2 (de
Inventor
Kenneth Mirza Dallas Tex. Branscome
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DATOTEK Inc DALLAS TEX US
Original Assignee
DATOTEK Inc DALLAS TEX US
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 DATOTEK Inc DALLAS TEX US filed Critical DATOTEK Inc DALLAS TEX US
Publication of DE2154019A1 publication Critical patent/DE2154019A1/de
Publication of DE2154019B2 publication Critical patent/DE2154019B2/de
Application granted granted Critical
Publication of DE2154019C3 publication Critical patent/DE2154019C3/de
Expired legal-status Critical Current

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
    • H04L9/0668—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 producing a non-linear pseudorandom sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Communication Control (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Synchronizing For Television (AREA)
DE2154019A 1971-04-15 1971-10-29 Zufallskodegenerator Expired DE2154019C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13432071A 1971-04-15 1971-04-15

Publications (3)

Publication Number Publication Date
DE2154019A1 DE2154019A1 (de) 1972-11-09
DE2154019B2 DE2154019B2 (de) 1981-02-26
DE2154019C3 true DE2154019C3 (de) 1981-12-10

Family

ID=22462819

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2154019A Expired DE2154019C3 (de) 1971-04-15 1971-10-29 Zufallskodegenerator

Country Status (9)

Country Link
US (1) US3781473A (enExample)
CA (1) CA950360A (enExample)
CH (1) CH572688A5 (enExample)
DE (1) DE2154019C3 (enExample)
FR (1) FR2133395A5 (enExample)
GB (1) GB1361850A (enExample)
IT (1) IT939641B (enExample)
NL (1) NL7115278A (enExample)
NO (1) NO142797C (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004089A (en) * 1975-02-28 1977-01-18 Ncr Corporation Programmable cryptic device for enciphering and deciphering data
US4166922A (en) * 1975-04-14 1979-09-04 Datotek, Inc. Multi-mode digital enciphering system with repeated priming sequences
US4133974A (en) * 1976-11-05 1979-01-09 Datotek, Inc. System for locally enciphering prime data
DE2706421C2 (de) * 1977-02-16 1979-03-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Einstellen von Schlüsseltextgeneratoren in Chiffriergeräten
US4202051A (en) * 1977-10-03 1980-05-06 Wisconsin Alumni Research Foundation Digital data enciphering and deciphering circuit and method
FR2477344B1 (fr) * 1980-03-03 1986-09-19 Bull Sa Procede et systeme de transmission d'informations confidentielles
US5428686A (en) * 1981-09-28 1995-06-27 The United States Of America As Represented By The Direrctor Of The National Security Agency Secure communication system having long-term keying variable
JPS59501388A (ja) * 1982-07-15 1984-08-02 ライト・シグネイチヤ−ズ，インコ−ポ−レテツド 安全システム
US4688257A (en) * 1984-07-17 1987-08-18 General Electric Company Secure wireless communication system utilizing locally synchronized noise signals
DE3687671D1 (de) 1985-06-07 1993-03-18 Siemens Ag Verfahren und anordnung zur sicherung des zugriffs zu einer rechenanlage.
US4802217A (en) * 1985-06-07 1989-01-31 Siemens Corporate Research & Support, Inc. Method and apparatus for securing access to a computer facility
US4860353A (en) * 1988-05-17 1989-08-22 General Instrument Corporation Dynamic feedback arrangement scrambling technique keystream generator
SE470242B (sv) * 1992-05-12 1993-12-13 Ericsson Telefon Ab L M Anordning för generering av slumptal
US5297207A (en) * 1993-05-24 1994-03-22 Degele Steven T Machine generation of cryptographic keys by non-linear processes similar to processes normally associated with encryption of data

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL109840C (enExample) * 1957-02-26
CH402937A (de) * 1961-08-18 1965-11-30 Gretag Ag Verfahren zur Verschlüsselung von impulsförmig übertragenen Nachrichten
US3506783A (en) * 1966-06-17 1970-04-14 Int Standard Electric Corp Key material generator

Also Published As

Publication number Publication date
IT939641B (it) 1973-02-10
NL7115278A (enExample) 1972-10-17
FR2133395A5 (enExample) 1972-11-24
CH572688A5 (enExample) 1976-02-13
DE2154019A1 (de) 1972-11-09
CA950360A (en) 1974-07-02
GB1361850A (en) 1974-07-30
US3781473A (en) 1973-12-25
NO142797C (no) 1980-10-15
DE2154019B2 (de) 1981-02-26
NO142797B (no) 1980-07-07

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee