MX366491B - Método criptográfico en bloques para encriptar/desencriptar mensajes y dispositivos criptográficos para implementar este método. - Google Patents

Método criptográfico en bloques para encriptar/desencriptar mensajes y dispositivos criptográficos para implementar este método.

Info

Publication number
MX366491B
MX366491B MX2017007015A MX2017007015A MX366491B MX 366491 B MX366491 B MX 366491B MX 2017007015 A MX2017007015 A MX 2017007015A MX 2017007015 A MX2017007015 A MX 2017007015A MX 366491 B MX366491 B MX 366491B
Authority
MX
Mexico
Prior art keywords
block
ciphertext
segment
plaintext
cryptographic
Prior art date
Application number
MX2017007015A
Other languages
English (en)
Other versions
MX2017007015A (es
Inventor
Wyseur Brecht
Original Assignee
Nagravision Sa
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 Nagravision Sa filed Critical Nagravision Sa
Publication of MX2017007015A publication Critical patent/MX2017007015A/es
Publication of MX366491B publication Critical patent/MX366491B/es

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
    • H04L9/0631—Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • 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
    • H04L9/0618—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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H04L9/3242—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Bioethics (AREA)
  • Storage Device Security (AREA)
  • Document Processing Apparatus (AREA)

Abstract

Se describe un método y aparato para encripción en bloques que utiliza repetición de rondas para proporcionar, a partir de un mensaje de texto legible (10), un mensaje de texto encriptado (50) y un identificador global (52). El mensaje de texto legible se convierte en una pluralidad de bloques de texto legible ordenados (11) que se procesan sucesivamente durante una ronda para computar: - un criptograma (30) al encriptar los datos de entrada (20) utilizando una sola clave criptográfica, comprendiendo dicho criptograma un primer segmento (31) y un segundo segmento (32) - un bloque de texto encriptado (51) al realizar una primera operación (41) utilizando, como operandos: dicho primer segmento (31), dicho bloque de texto legible actual (11) y dicho segundo segmento (32). En cada siguiente ronda, dichos datos de entrada se determinan de nuevo en base al bloque de texto encriptado actual y en los datos reproducibles actualizados. El mensaje de texto encriptado se determina al concatenar los bloques de texto encriptado y el identificador global mediante una segunda operación (42) que utiliza identificadores locales de autenticación computados como operandos.
MX2017007015A 2014-12-03 2015-12-01 Método criptográfico en bloques para encriptar/desencriptar mensajes y dispositivos criptográficos para implementar este método. MX366491B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14196089 2014-12-03
PCT/EP2015/078115 WO2016087395A1 (en) 2014-12-03 2015-12-01 Block cryptographic method for encrypting/decrypting messages and cryptographic devices for implementing this method

Publications (2)

Publication Number Publication Date
MX2017007015A MX2017007015A (es) 2017-10-02
MX366491B true MX366491B (es) 2019-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2017007015A MX366491B (es) 2014-12-03 2015-12-01 Método criptográfico en bloques para encriptar/desencriptar mensajes y dispositivos criptográficos para implementar este método.

Country Status (11)

Country Link
US (3) US11418321B2 (es)
EP (1) EP3228044B1 (es)
JP (1) JP6557727B2 (es)
KR (3) KR102794580B1 (es)
CN (1) CN107005415B (es)
AU (1) AU2015357253B2 (es)
CA (1) CA2968038C (es)
ES (1) ES2717999T3 (es)
MX (1) MX366491B (es)
SG (1) SG11201704361XA (es)
WO (1) WO2016087395A1 (es)

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KR102628466B1 (ko) 2024-01-23
EP3228044A1 (en) 2017-10-11
BR112017010974A2 (en) 2018-01-09
US20250023710A1 (en) 2025-01-16
CA2968038A1 (en) 2016-06-09
CN107005415B (zh) 2021-03-23
US20170366340A1 (en) 2017-12-21
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AU2015357253A1 (en) 2017-06-15
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US20230041383A1 (en) 2023-02-09
CN107005415A (zh) 2017-08-01
WO2016087395A1 (en) 2016-06-09
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EP3228044B1 (en) 2019-02-20
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