IT939640B - Perfezionamento nei sistemi per la cifratura di dati sotto forma numerica - Google Patents

Perfezionamento nei sistemi per la cifratura di dati sotto forma numerica

Info

Publication number
IT939640B
IT939640B IT53619/71A IT5361971A IT939640B IT 939640 B IT939640 B IT 939640B IT 53619/71 A IT53619/71 A IT 53619/71A IT 5361971 A IT5361971 A IT 5361971A IT 939640 B IT939640 B IT 939640B
Authority
IT
Italy
Prior art keywords
improvement
systems
data encryption
numerical form
numerical
Prior art date
Application number
IT53619/71A
Other languages
English (en)
Original Assignee
Datotek
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 filed Critical Datotek
Application granted granted Critical
Publication of IT939640B publication Critical patent/IT939640B/it

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
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0637—Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
    • 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
    • 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
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Storage Device Security (AREA)
  • Communication Control (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
IT53619/71A 1971-04-15 1971-10-21 Perfezionamento nei sistemi per la cifratura di dati sotto forma numerica IT939640B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13431971A 1971-04-15 1971-04-15

Publications (1)

Publication Number Publication Date
IT939640B true IT939640B (it) 1973-02-10

Family

ID=22462814

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53619/71A IT939640B (it) 1971-04-15 1971-10-21 Perfezionamento nei sistemi per la cifratura di dati sotto forma numerica

Country Status (9)

Country Link
US (1) US3781472A (it)
CH (1) CH592983A5 (it)
DE (1) DE2154018C3 (it)
FR (1) FR2133394A5 (it)
GB (1) GB1361849A (it)
IT (1) IT939640B (it)
NL (1) NL7115284A (it)
NO (1) NO136125C (it)
SE (1) SE382733B (it)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878332A (en) * 1972-10-20 1975-04-15 Barrie O Morgan Digital crytographic system and method
USRE30957E (en) * 1973-10-15 1982-06-01 International Business Machines Corporation Variant key matrix cipher system
US4024574A (en) * 1975-02-26 1977-05-17 Teleglobe Pay Tv System Inc. Validation method and apparatus for pay television systems
US4091423A (en) * 1975-03-17 1978-05-23 Datotek, Inc. Synchronous digital data scrambling system
US4107458A (en) * 1976-08-23 1978-08-15 Constant James N Cipher computer and cryptographic system
US4115657A (en) * 1976-11-11 1978-09-19 Datotek, Inc. Random digital code generator
US4281216A (en) * 1979-04-02 1981-07-28 Motorola Inc. Key management for encryption/decryption systems
DE2926013C2 (de) * 1979-06-27 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Ausgabe von binärkodierten Nachrichten an einen empfangsbefugten Personenkreis
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
EP0237805B1 (de) * 1986-02-19 1992-01-15 Siemens Aktiengesellschaft Verfahren und Anordnung zum Verhindern des Aussendens von unverschlüsselten Daten
NL8602847A (nl) * 1986-11-11 1988-06-01 Philips Nv Werkwijze voor het vercijferen/ontcijferen en inrichting voor het uitvoeren van de werkwijze.
US4891781A (en) * 1987-03-04 1990-01-02 Cylink Corporation Modulo arithmetic processor chip
US4926479A (en) * 1988-04-29 1990-05-15 Massachusetts Institute Of Technology Multiprover interactive verification system
US5077791A (en) * 1989-06-26 1991-12-31 Motorola, Inc. Method and apparatus for preventing unauthorized transmissions
GB9008374D0 (en) * 1990-04-12 1990-06-13 British Telecomm Communication system
US5210710A (en) * 1990-10-17 1993-05-11 Cylink Corporation Modulo arithmetic processor chip
JP3047456B2 (ja) * 1990-11-09 2000-05-29 ソニー株式会社 衛星放送受信装置
US5410599A (en) * 1992-05-15 1995-04-25 Tecsec, Incorporated Voice and data encryption device
FI101670B (fi) * 1995-12-15 1998-07-31 Nokia Mobile Phones Ltd Menetelmä matkaviestinverkon ja matkaviestimen välisen tiedonsiirron s alauksen ilmaisemiseksi
US5960066A (en) * 1996-11-07 1999-09-28 Lucent Technologies, Inc. Method and apparatus for using telephone house wiring for voice/data network
WO2000025467A1 (en) 1998-10-28 2000-05-04 L-3 Communications Corporation Encryption and authentication methods and apparatus for securing telephone communications
US20070097126A1 (en) * 2004-01-16 2007-05-03 Viatcheslav Olchevski Method of transmutation of alpha-numeric characters shapes and data handling system
US20050156931A1 (en) * 2004-01-16 2005-07-21 Olchevski Viatcheslav F. Method of transmutation of alpha-numeric characters shapes and the data handling system
US9894040B2 (en) 2012-09-11 2018-02-13 Microsoft Technology Licensing, Llc Trust services for securing data in the cloud
US8959351B2 (en) * 2012-09-13 2015-02-17 Microsoft Corporation Securely filtering trust services records
PL232441B1 (pl) * 2017-08-08 2019-06-28 Politechnika Warszawska Metastabilnościowy generator losowy
PL232380B1 (pl) * 2017-08-08 2019-06-28 Politechnika Warszawska Generator metastabilnościowych interwałów czasowych
PL232383B1 (pl) * 2017-08-08 2019-06-28 Politechnika Warszawska Metastabilnościowy generator losowy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3506783A (en) * 1966-06-17 1970-04-14 Int Standard Electric Corp Key material generator

Also Published As

Publication number Publication date
DE2154018C3 (de) 1981-09-17
SE382733B (sv) 1976-02-09
NL7115284A (it) 1972-10-17
GB1361849A (en) 1974-07-30
DE2154018A1 (de) 1972-11-09
FR2133394A5 (it) 1972-11-24
DE2154018B2 (de) 1980-10-23
NO136125B (it) 1977-04-12
US3781472A (en) 1973-12-25
NO136125C (no) 1977-07-20
CH592983A5 (it) 1977-11-15

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