ES2019572T3 - Procedimiento para cifrar una serie consistente en al menos un simbolo. - Google Patents

Procedimiento para cifrar una serie consistente en al menos un simbolo.

Info

Publication number
ES2019572T3
ES2019572T3 ES90201136T ES90201136T ES2019572T3 ES 2019572 T3 ES2019572 T3 ES 2019572T3 ES 90201136 T ES90201136 T ES 90201136T ES 90201136 T ES90201136 T ES 90201136T ES 2019572 T3 ES2019572 T3 ES 2019572T3
Authority
ES
Spain
Prior art keywords
series
bits
register
contents
good statistical
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
ES90201136T
Other languages
English (en)
Other versions
ES2019572A4 (es
Inventor
Jean Paul Boly
Gerrit Roelofsen
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.)
Koninklijke PTT Nederland NV
Original Assignee
Koninklijke 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 Koninklijke PTT Nederland NV filed Critical Koninklijke PTT Nederland NV
Publication of ES2019572A4 publication Critical patent/ES2019572A4/es
Application granted granted Critical
Publication of ES2019572T3 publication Critical patent/ES2019572T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
  • Facsimile Transmission Control (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Optical Communication System (AREA)
  • Peptides Or Proteins (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

EL INVENTO ESTA RELACIONADO CON UN ALGORITMO DE CIFRADO EN BASE A UNA CLAVE SECRETA, EN EL QUE SE HACE USO DE UNA FUNCION DE SUSTITUCION, S(N,K) CONOCIDA COMO CAJA S, CON LA QUE SE PUEDE SUSTITUIR UNA SERIE DE N SIMBOLOS (POR EJEMPLO BITS) POR UNA SERIE DE SIMBOLOS K. EN BASE A LA CLAVE SECRETA, SE GENERA SIEMPRE UNA CAJA S ARBITRARIA PARA EVITAR EL USO DE CAJAS S PREDETERMINADAS. ESTA GENERACION PUEDE TENER LUGAR GENERALMENTE DE FORMA QUE EL RESULTADO DE LA SUSTITUCION CASI CON CERTEZA NO TIENE LINEALIDAD, SINO QUE TIENE ADEMAS BUENAS PROPIEDADES ESTADISTICAS. ESTAS PROPIEDADES SE OBTENDRAN BIEN SEA DINAMICAMENTE (FIGURA 1), SI LOS BITS DE UN RESULTADO DE SUSTITUCION TEMPORAL (CONTENIDO DEL REGISTRO 3) SE COMBINAN ADEMAS, POR MEDIO DE UN ADICIONADOR DE MODULO-2 5, CON LOS BITS DE UNA SERIE CON UNA BUENA DISTRIBUCION ESTADISTICA (CONTENIDO DEL REGISTRO 4) PARA EL RESULTADO DE SUSTITUCION ADECUADO (CONTENIDO DEL REGISTRO 6), O ESTADISTICAMENTE (FIGURA 2), SI UNA SERIE DE N BITS (CONTENIDO DEL REGISTRO 2) QUE SE VA A SUSTITUIR SE COMBINA CON LOS BITS K DE UNA SERIE CON UNA BUENA DISTRIBUCION ESTADISTICA (CONTENIDO DEL REGISTRO 4) PARA UNA SERIE DE N+K BITS, QUE SE SUSTITUYE SECUENCIALMENTE POR MEDIO DE UNA FUNCION DE SUSTITUCION S{N+K,K} DE LA CAJA S 1''. LAS VENTAJAS DE ELLO SON QUE SE PUEDE DISTRIBUIR UNA PRESELECCION DE CAJAS S CON BUENAS PROPIEDADES ESTADISTICAS Y NO LINEALES, Y QUE LAS CAJAS S SIEMPRE CAMBIAN Y, COMO CONSECUENCIA DE ELLO, NO SON CONOCIDAS, LO QUE BENEFICIARA LA POTENCIA DEL ALGORITMO DE CIFRADO.
ES90201136T 1989-05-26 1990-05-21 Procedimiento para cifrar una serie consistente en al menos un simbolo. Expired - Lifetime ES2019572T3 (es)

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 (2)

Publication Number Publication Date
ES2019572A4 ES2019572A4 (es) 1991-07-01
ES2019572T3 true ES2019572T3 (es) 1994-05-01

Family

ID=19854718

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90201136T Expired - Lifetime ES2019572T3 (es) 1989-05-26 1990-05-21 Procedimiento para cifrar una serie consistente en al menos un simbolo.

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
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
NO303610B1 (no) 1998-08-03
EP0399587A1 (en) 1990-11-28
DE69006774T2 (de) 1994-08-11
DE69006774D1 (de) 1994-03-31
FI902591A0 (fi) 1990-05-24
ES2019572A4 (es) 1991-07-01
GR900300193T1 (en) 1991-10-10
DE399587T1 (de) 1991-02-28
NO902337D0 (no) 1990-05-25
FI108324B (fi) 2001-12-31
NL8901323A (nl) 1990-12-17
EP0399587B1 (en) 1994-02-23
NO902337L (no) 1990-11-27
ATE101950T1 (de) 1994-03-15
DK0399587T3 (da) 1994-06-27

Similar Documents

Publication Publication Date Title
US5365588A (en) High speed encryption system and method
JP4608319B2 (ja) 複数鍵を用いたストリーム暗号の生成方法
WO2000051244A8 (en) A fuzzy commitment scheme
CA2056886A1 (en) Method for secure communication
KR950704733A (ko) 선택 가능한 탭이 있는 피드백 레지스터를 갖는 암호화 방법 및 장치(method and apparatus for encrypion having a feedback register with selectable taps)
KR970008912A (ko) 이중 피드포워드 해시기능을 갖춘 암호화장치
JPH0675525A (ja) 暗号通信装置
US6760440B1 (en) One's complement cryptographic combiner
ES2019572T3 (es) Procedimiento para cifrar una serie consistente en al menos un simbolo.
Selvakumar et al. Fundamental circuits and cut-sets used in cryptography
Balogun et al. Multiple Caesar cypher encryption algorithm
JPH04335730A (ja) 暗号送信装置、暗号受信装置、暗号通信システム
Kumar et al. MSEA: modified symmetric encryption algorithm
AU1770501A (en) Methods and apparatus for keystream generation
Hassan et al. Network security by block ciphers
JPH0591101A (ja) 暗号化装置及び復号化装置
Abubakar et al. An Improved Hybrid Encryption Scheme Based on the Sequence of Reduced Residue Systems
Christensen Caesar Ciphers [D]
RU2701128C1 (ru) Способ шифрования двоичной информации
Filiol et al. A new, fast block cipher design: COS ciphers
Kallick A Modified Simple Substitution Cipher With Unbounded Unicity Distance
Iswo et al. Combination of AES Algorithm with Blowfish Algorithm for File Attachment at E-Mail Sending
Vennila et al. An Extension to Traditional Qwerty Cryptographic Method
KR980007156A (ko) 비밀키 블록 암호화 및 복호화 방법
Bhattacharryya et al. A new block ciphering scheme

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 399587

Country of ref document: ES