DE1257843B - Einrichtung zur Erzeugung von Schluesselimpulsfolgen - Google Patents

Einrichtung zur Erzeugung von Schluesselimpulsfolgen

Info

Publication number
DE1257843B
DE1257843B DEG36650A DEG0036650A DE1257843B DE 1257843 B DE1257843 B DE 1257843B DE G36650 A DEG36650 A DE G36650A DE G0036650 A DEG0036650 A DE G0036650A DE 1257843 B DE1257843 B DE 1257843B
Authority
DE
Germany
Prior art keywords
shift register
switching
circuit
coincidence
pulse
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.)
Withdrawn
Application number
DEG36650A
Other languages
German (de)
English (en)
Inventor
Kurt Ehrat
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.)
Gretag AG
Original Assignee
Gretag 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 Gretag AG filed Critical Gretag AG
Publication of DE1257843B publication Critical patent/DE1257843B/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/582—Pseudo-random number generators
    • G06F7/584—Pseudo-random number generators using finite field arithmetic, e.g. using a linear feedback shift register
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/581—Generating an LFSR sequence, e.g. an m-sequence; sequence may be generated without LFSR, e.g. using Galois Field arithmetic
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/583—Serial finite field implementation, i.e. serial implementation of finite field arithmetic, generating one new bit or trit per step, e.g. using an LFSR or several independent LFSRs; also includes PRNGs with parallel operation between LFSR and outputs

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computational Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Manipulation Of Pulses (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DEG36650A 1962-01-10 1962-12-17 Einrichtung zur Erzeugung von Schluesselimpulsfolgen Withdrawn DE1257843B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH24662A CH408109A (de) 1962-01-10 1962-01-10 Einrichtung zur Erzeugung von Schlüsselimpulsfolgen

Publications (1)

Publication Number Publication Date
DE1257843B true DE1257843B (de) 1968-01-04

Family

ID=4182624

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG36650A Withdrawn DE1257843B (de) 1962-01-10 1962-12-17 Einrichtung zur Erzeugung von Schluesselimpulsfolgen

Country Status (6)

Country Link
US (1) US3678198A (US20100223739A1-20100909-C00005.png)
BE (1) BE626963A (US20100223739A1-20100909-C00005.png)
CH (1) CH408109A (US20100223739A1-20100909-C00005.png)
DE (1) DE1257843B (US20100223739A1-20100909-C00005.png)
GB (1) GB973537A (US20100223739A1-20100909-C00005.png)
NL (2) NL142301B (US20100223739A1-20100909-C00005.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4434322A (en) 1965-08-19 1984-02-28 Racal Data Communications Inc. Coded data transmission system
US3921151A (en) * 1971-06-21 1975-11-18 Patelhold Patentwerwertungs & Apparatus for enciphering transmitted data by interchanging signal elements of the transmitted data without overlapping or omitting any elements within the transmitted signal train
US3764742A (en) * 1971-12-23 1973-10-09 Ibm Cryptographic identification system
US3878332A (en) * 1972-10-20 1975-04-15 Barrie O Morgan Digital crytographic system and method
US4305060A (en) * 1979-02-26 1981-12-08 Multi-Elmac Company Decoder circuitry for selectively activating loads
US4447672A (en) * 1980-10-06 1984-05-08 Nippon Electric Co., Ltd. Device for encrypting each input data bit by at least one keying bit decided by a code pattern and a bit pattern of a predetermined number of preceding encrypted bits
JPH05291891A (ja) * 1992-02-14 1993-11-05 Ricoh Co Ltd 一次乱数パルス列発生回路装置
GB0028369D0 (en) * 2000-11-21 2001-01-03 Marconi Software Solutions Ltd A communication system
US10438022B2 (en) * 2016-12-16 2019-10-08 Arm Limited Logic encryption using on-chip memory cells

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095312B (de) * 1955-01-26 1960-12-22 Hell Rudolf Dr Ing Fa Vorrichtung zur Herstellung von verlaengerten Schluesselfolgen mit sehr langer Periode fuer Mischgeraete zum Ver- und Entschluesseln

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995624A (en) * 1959-03-11 1961-08-08 Zenith Radio Corp Secrecy communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095312B (de) * 1955-01-26 1960-12-22 Hell Rudolf Dr Ing Fa Vorrichtung zur Herstellung von verlaengerten Schluesselfolgen mit sehr langer Periode fuer Mischgeraete zum Ver- und Entschluesseln

Also Published As

Publication number Publication date
NL142301B (nl) 1974-05-15
US3678198A (en) 1972-07-18
NL287518A (US20100223739A1-20100909-C00005.png)
BE626963A (US20100223739A1-20100909-C00005.png)
CH408109A (de) 1966-02-28
GB973537A (en) 1964-10-28

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee