JPH0430797B2 - - Google Patents

Info

Publication number
JPH0430797B2
JPH0430797B2 JP58239001A JP23900183A JPH0430797B2 JP H0430797 B2 JPH0430797 B2 JP H0430797B2 JP 58239001 A JP58239001 A JP 58239001A JP 23900183 A JP23900183 A JP 23900183A JP H0430797 B2 JPH0430797 B2 JP H0430797B2
Authority
JP
Japan
Prior art keywords
outputs
registers
register
generator
equal
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 - Lifetime
Application number
JP58239001A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59167140A (ja
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 filed Critical
Publication of JPS59167140A publication Critical patent/JPS59167140A/ja
Publication of JPH0430797B2 publication Critical patent/JPH0430797B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Color Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
JP58239001A 1982-12-20 1983-12-20 擬似ランダム２進アドレス発生器 Granted JPS59167140A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8221361A FR2538192B1 (fr) 1982-12-20 1982-12-20 Generateur de sequences numeriques pseudoaleatoires
FR8221361 1982-12-20
FR8313540 1983-08-22

Publications (2)

Publication Number Publication Date
JPS59167140A JPS59167140A (ja) 1984-09-20
JPH0430797B2 true JPH0430797B2 (2) 1992-05-22

Family

ID=9280299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58239001A Granted JPS59167140A (ja) 1982-12-20 1983-12-20 擬似ランダム２進アドレス発生器

Country Status (2)

Country Link
JP (1) JPS59167140A (2)
FR (1) FR2538192B1 (2)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2239817A1 (en) * 1973-07-31 1975-02-28 Trt Telecom Radio Electr Digital noise generator generates random equiprobable bits - by adding outputs from non-equiprobable generator and binary-series generator
US3963905A (en) * 1974-09-11 1976-06-15 Bell Telephone Laboratories, Incorporated Periodic sequence generators using ordinary arithmetic
DE2547937B2 (de) * 1975-10-25 1981-06-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Erzeugen zufallsähnlicher Zeichenfolgen
FR2448824A1 (fr) * 1979-02-06 1980-09-05 Telediffusion Fse Systeme de videotex muni de moyens de controle d'acces a l'information

Also Published As

Publication number Publication date
FR2538192A1 (fr) 1984-06-22
FR2538192B1 (fr) 1985-06-07
JPS59167140A (ja) 1984-09-20

Similar Documents

Publication Publication Date Title
Schneier Description of a new variable-length key, 64-bit block cipher (Blowfish)
US4649419A (en) Pseudo-random binary sequency generator
US6014446A (en) Apparatus for providing improved encryption protection in a communication system
Maurer Conditionally-perfect secrecy and a provably-secure randomized cipher
US5404402A (en) Clock frequency modulation for secure microprocessors
KR100333255B1 (ko) N-비트입력값을변환된n-비트출력값으로변환하는장치및방법
US4221931A (en) Time division multiplied speech scrambler
AU635466B2 (en) Method of cryptographically transforming electronic digital data from one form to another
US5745522A (en) Randomizer for byte-wise scrambling of data
US4748576A (en) Pseudo-random binary sequence generators
JPS5873257A (ja) 暗号化装置
Maurer A provably-secure strongly-randomized cipher
Kanso Modified self-shrinking generator
Khan et al. Security of multimedia communication with game trick based fast, efficient, and robust color‐/gray‐scale image encryption algorithm
ShreyamshaKumar et al. JPEG image encryption using fuzzy PN sequences
Nuthan et al. Development of Randomized Hybrid Crypto system
US5859912A (en) Digital information privacy system
EP0035048B1 (en) Cipher system using a variant key matrix
EP1232603B1 (en) Methods and apparatus for keystream generation
JP3051416B2 (ja) アドレス発生装置
Al Jabri et al. Secure progressive transmission of compressed images
袁正雄 et al. Chaos-based encryption for fractal image coding
Oyinloye Image Encryption System based on Length Three Moduli Set
JPS62178086A (ja) 暗号化装置
RU2239291C1 (ru) Устройство для управляемого преобразования двоичных данных