FI108324B - Menetelmä kulloinkin ainakin yhden symbolin sarjasta koostuvien sanomien koodaamiseksi - Google Patents

Menetelmä kulloinkin ainakin yhden symbolin sarjasta koostuvien sanomien koodaamiseksi Download PDF

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Publication number
FI108324B
FI108324B FI902591A FI902591A FI108324B FI 108324 B FI108324 B FI 108324B FI 902591 A FI902591 A FI 902591A FI 902591 A FI902591 A FI 902591A FI 108324 B FI108324 B FI 108324B
Authority
FI
Finland
Prior art keywords
bits
series
bit
substitution
modulo
Prior art date
Application number
FI902591A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI902591A0 (fi
Inventor
Gerrit Roelofsen
Jean Paul Boly
Original Assignee
Konink Ptt Nederland Nv
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 Konink Ptt Nederland Nv filed Critical Konink Ptt Nederland Nv
Publication of FI902591A0 publication Critical patent/FI902591A0/fi
Application granted granted Critical
Publication of FI108324B publication Critical patent/FI108324B/fi

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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)
  • Facsimile Transmission Control (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Peptides Or Proteins (AREA)
  • Optical Communication System (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electrically Operated Instructional Devices (AREA)
FI902591A 1989-05-26 1990-05-24 Menetelmä kulloinkin ainakin yhden symbolin sarjasta koostuvien sanomien koodaamiseksi FI108324B (fi)

Applications Claiming Priority (2)

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.
NL8901323 1989-05-26

Publications (2)

Publication Number Publication Date
FI902591A0 FI902591A0 (fi) 1990-05-24
FI108324B true FI108324B (fi) 2001-12-31

Family

ID=19854718

Family Applications (1)

Application Number Title Priority Date Filing Date
FI902591A FI108324B (fi) 1989-05-26 1990-05-24 Menetelmä kulloinkin ainakin yhden symbolin sarjasta koostuvien sanomien koodaamiseksi

Country Status (9)

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

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
US6278783B1 (en) 1998-06-03 2001-08-21 Cryptography Research, Inc. 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
ES2019572A4 (es) 1991-07-01
NO902337D0 (no) 1990-05-25
ATE101950T1 (de) 1994-03-15
NL8901323A (nl) 1990-12-17
DE69006774T2 (de) 1994-08-11
FI902591A0 (fi) 1990-05-24
ES2019572T3 (es) 1994-05-01
NO303610B1 (no) 1998-08-03
DE399587T1 (de) 1991-02-28
DE69006774D1 (de) 1994-03-31
NO902337L (no) 1990-11-27
GR900300193T1 (en) 1991-10-10
EP0399587B1 (en) 1994-02-23
DK0399587T3 (da) 1994-06-27
EP0399587A1 (en) 1990-11-28

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Owner name: KONINKLIJKE PTT NEDERLAND N.V.