NO303610B1 - Forbedring ved kryptering av en melding - Google Patents

Forbedring ved kryptering av en melding Download PDF

Info

Publication number
NO303610B1
NO303610B1 NO902337A NO902337A NO303610B1 NO 303610 B1 NO303610 B1 NO 303610B1 NO 902337 A NO902337 A NO 902337A NO 902337 A NO902337 A NO 902337A NO 303610 B1 NO303610 B1 NO 303610B1
Authority
NO
Norway
Prior art keywords
bits
row
series
substitution
modulo
Prior art date
Application number
NO902337A
Other languages
English (en)
Norwegian (no)
Other versions
NO902337L (no
NO902337D0 (no
Inventor
Jean-Paul Boly
Gerrit Roelofsen
Original Assignee
Nederland Ptt
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 Nederland Ptt filed Critical Nederland Ptt
Publication of NO902337D0 publication Critical patent/NO902337D0/no
Publication of NO902337L publication Critical patent/NO902337L/no
Publication of NO303610B1 publication Critical patent/NO303610B1/no

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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry

Landscapes

  • Engineering & Computer 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)
  • Mobile Radio Communication Systems (AREA)
  • Optical Communication System (AREA)
  • Peptides Or Proteins (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Facsimile Transmission Control (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Emergency Protection Circuit Devices (AREA)
NO902337A 1989-05-26 1990-05-25 Forbedring ved kryptering av en melding NO303610B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8901323A NL8901323A (nl) 1989-05-26 1989-05-26 Werkwijze voor het vercijferen van een reeks telkens uit tenminste een symbool bestaande boodschappen.

Publications (3)

Publication Number Publication Date
NO902337D0 NO902337D0 (no) 1990-05-25
NO902337L NO902337L (no) 1990-11-27
NO303610B1 true NO303610B1 (no) 1998-08-03

Family

ID=19854718

Family Applications (1)

Application Number Title Priority Date Filing Date
NO902337A NO303610B1 (no) 1989-05-26 1990-05-25 Forbedring ved kryptering av en melding

Country Status (9)

Country Link
EP (1) EP0399587B1 (es)
AT (1) ATE101950T1 (es)
DE (2) DE399587T1 (es)
DK (1) DK0399587T3 (es)
ES (1) ES2019572T3 (es)
FI (1) FI108324B (es)
GR (1) GR900300193T1 (es)
NL (1) NL8901323A (es)
NO (1) NO303610B1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7587044B2 (en) 1998-01-02 2009-09-08 Cryptography Research, Inc. Differential power analysis method and apparatus
AU6381699A (en) * 1998-06-03 2000-01-10 Cryptography Research, Inc. Improved des and other cryptographic processes with leak minimization for smartcards and other cryptosystems
EP1933496A3 (en) * 1998-06-03 2012-06-13 Cryptography Research Inc. Improved DES and other cryptographic processes with leak minimization for smartcards and other cryptosystems
NL1011719C2 (nl) 1999-04-01 2000-10-03 Koninkl Kpn Nv Werkwijze voor het met toepassing van een functie en een sleutel vercijferen van een reeks symbolen.
GB2450131B (en) * 2007-06-13 2009-05-06 Ingenia Holdings Fuzzy Keys

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301327A (en) * 1979-06-05 1981-11-17 Lee Lin Nan Reduction of message redundancy by multiple substitution: a message preprocessing scheme for secure communications
NL8203737A (nl) * 1982-09-27 1984-04-16 Nederlanden Staat Inrichting voor vercijfering van digitale signalen met een of meer des-schakelingen.
US4760599A (en) * 1985-11-07 1988-07-26 Nec Corporation Data encryptor

Also Published As

Publication number Publication date
DE69006774D1 (de) 1994-03-31
DE69006774T2 (de) 1994-08-11
ES2019572T3 (es) 1994-05-01
ES2019572A4 (es) 1991-07-01
EP0399587A1 (en) 1990-11-28
ATE101950T1 (de) 1994-03-15
NL8901323A (nl) 1990-12-17
DE399587T1 (de) 1991-02-28
NO902337L (no) 1990-11-27
NO902337D0 (no) 1990-05-25
EP0399587B1 (en) 1994-02-23
FI902591A0 (fi) 1990-05-24
GR900300193T1 (en) 1991-10-10
FI108324B (fi) 2001-12-31
DK0399587T3 (da) 1994-06-27

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