ES2130570T3 - Sistema y aparato para el encriptado/desencriptado de bloques de datos. - Google Patents

Sistema y aparato para el encriptado/desencriptado de bloques de datos.

Info

Publication number
ES2130570T3
ES2130570T3 ES95901624T ES95901624T ES2130570T3 ES 2130570 T3 ES2130570 T3 ES 2130570T3 ES 95901624 T ES95901624 T ES 95901624T ES 95901624 T ES95901624 T ES 95901624T ES 2130570 T3 ES2130570 T3 ES 2130570T3
Authority
ES
Spain
Prior art keywords
blocks
pct
decryption
encryption
encrypting
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
ES95901624T
Other languages
English (en)
Inventor
Gideon Jacobus Kuhn
Donald Watts Davies
Simon Paul Ashley Rix
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.)
Irdeto BV
Original Assignee
Irdeto BV
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 Irdeto BV filed Critical Irdeto BV
Application granted granted Critical
Publication of ES2130570T3 publication Critical patent/ES2130570T3/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
    • 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
    • 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
    • H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Television Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

SISTEMA PARA ENCRIPTAR Y DESENCRIPTAR DATOS DIGITALES EN EL QUE LOS DATOS SE DIVIDEN EN PAQUETES DE N BLOQUES X(1) ... X(N) DE 2{SUP,M} BITS, QUE COMPRENDE UN MECANISMO DE ENCRIPTACION Y DESENCRIPTACION. EL MECANISMO DE ENCRIPTACION INVIERTE LA SECUENCIA DE LOS BLOQUES X(1) ... X(N) ANTES DE UNA OPERACION XOR Y A CONTINUACION SE LLEVA A CABO UNA OPERACION DE ENCRIPTACION, POR MEDIO DE UN ALGORITMO DE ENCRIPTACION E EN CADA BLOQUE DE UN PAQUETE. DE ESTE MODO SE FORMAN LOS SIGUIENTES BLOQUES ENCRIPTADOS Y(1) ... Y(N): Y(1) =E [X(N)+IV)], Y(I) = E[X(NI+1)]+Y(I-1) PARA > 1 Y I (MENOR O IGUAL) N. LOS BLOQUES ENCRIPTADOS Y(1) ... Y(N) SE TRANSFIEREN POR MEDIO DE UN EMISOR EN UNA SECUENCIA INVERTIDA Y(N) ... Y(1) A UN RECEPTOR. EL MECANISMO DE DESENCRIPTACION DEL RECEPTOR, OBTIENE LOS BLOQUES ORIGINALES X(1) ... X(N) LLEVANDO A CABO UNA OPERACION DE DESENCRIPTACION, POR MEDIO DEL ALGORITMO DE DESENCRIPTACION, D Y A CONTINUACION UNA OPERACION XOR EN CADA BLOQUE Y(N) ... Y(1) RECIBIDO. DE ESTE MODOLOS BLOQUES SON OBTENIDOS COMO SIGUE: X(I)= D [Y(N-I+1)] PARA I = 1,2 ..., N-1; X(N)= D[Y(1)]+IV.
ES95901624T 1993-10-14 1994-10-07 Sistema y aparato para el encriptado/desencriptado de bloques de datos. Expired - Lifetime ES2130570T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9301784A NL9301784A (nl) 1993-10-14 1993-10-14 Systeem voor het versleutelen en ontsleutelen van digitale informatie.

Publications (1)

Publication Number Publication Date
ES2130570T3 true ES2130570T3 (es) 1999-07-01

Family

ID=19863011

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95901624T Expired - Lifetime ES2130570T3 (es) 1993-10-14 1994-10-07 Sistema y aparato para el encriptado/desencriptado de bloques de datos.

Country Status (11)

Country Link
US (1) US5799089A (es)
EP (1) EP0723726B1 (es)
AT (1) ATE176970T1 (es)
AU (1) AU683325B2 (es)
DE (1) DE69416684T2 (es)
DK (1) DK0723726T3 (es)
ES (1) ES2130570T3 (es)
GR (1) GR3030117T3 (es)
NL (1) NL9301784A (es)
WO (1) WO1995010906A1 (es)
ZA (1) ZA947822B (es)

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WO2014167161A2 (es) 2013-04-10 2014-10-16 Elatentia, S.L. Dispositivo de cifrado simétrico y procedimiento empleado

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US8055894B2 (en) * 1999-11-09 2011-11-08 Google Inc. Process and streaming server for encrypting a data stream with bandwidth based variation
US6449719B1 (en) * 1999-11-09 2002-09-10 Widevine Technologies, Inc. Process and streaming server for encrypting a data stream
US6870929B1 (en) * 1999-12-22 2005-03-22 Juniper Networks, Inc. High throughput system for encryption and other data operations
US7165175B1 (en) * 2000-09-06 2007-01-16 Widevine Technologies, Inc. Apparatus, system and method for selectively encrypting different portions of data sent over a network
US7362859B1 (en) * 2000-10-06 2008-04-22 Sandia Corporation Enhancement of utilization of encryption engine
US7043473B1 (en) 2000-11-22 2006-05-09 Widevine Technologies, Inc. Media tracking system and method
US7150045B2 (en) * 2000-12-14 2006-12-12 Widevine Technologies, Inc. Method and apparatus for protection of electronic media
DE10129285C2 (de) * 2001-06-18 2003-01-09 Hans-Joachim Mueschenborn Verschlüsselungsverfahren mit beliebig wählbaren Einmalschlüsseln
US7328345B2 (en) * 2002-01-29 2008-02-05 Widevine Technologies, Inc. Method and system for end to end securing of content for video on demand
US7299292B2 (en) * 2002-03-29 2007-11-20 Widevine Technologies, Inc. Process and streaming server for encrypting a data stream to a virtual smart card client system
FR2838894A1 (fr) * 2002-04-19 2003-10-24 St Microelectronics Sa Chiffrement du contenu d'une memoire externe a un processeur
US7594271B2 (en) * 2002-09-20 2009-09-22 Widevine Technologies, Inc. Method and system for real-time tamper evidence gathering for software
US7007170B2 (en) * 2003-03-18 2006-02-28 Widevine Technologies, Inc. System, method, and apparatus for securely providing content viewable on a secure device
US7356143B2 (en) * 2003-03-18 2008-04-08 Widevine Technologies, Inc System, method, and apparatus for securely providing content viewable on a secure device
US20040199771A1 (en) * 2003-04-04 2004-10-07 Widevine Technologies, Inc. Method for tracing a security breach in highly distributed content
KR100446336B1 (ko) * 2003-05-20 2004-09-01 엔에이치엔(주) 데이터 암호화 방법 및 장치
US7406174B2 (en) * 2003-10-21 2008-07-29 Widevine Technologies, Inc. System and method for n-dimensional encryption
US7257225B2 (en) * 2003-12-29 2007-08-14 American Express Travel Related Services Company, Inc. System and method for high speed reversible data encryption
US7526643B2 (en) * 2004-01-08 2009-04-28 Encryption Solutions, Inc. System for transmitting encrypted data
US8031865B2 (en) * 2004-01-08 2011-10-04 Encryption Solutions, Inc. Multiple level security system and method for encrypting data within documents
US7752453B2 (en) * 2004-01-08 2010-07-06 Encryption Solutions, Inc. Method of encrypting and transmitting data and system for transmitting encrypted data
EP1607891A1 (en) 2004-06-17 2005-12-21 ABN AMRO Bank N.V. System for managing business processes by means of a computer system
US9609279B2 (en) 2004-09-24 2017-03-28 Google Inc. Method and system for providing secure CODECS
US20080015999A1 (en) * 2005-02-04 2008-01-17 Widevine Technologies, Inc. Securely ingesting encrypted content into content servers
JP2006279644A (ja) * 2005-03-30 2006-10-12 Fujitsu Ltd 暗号化システム、暗号化装置、復号化装置、暗号化・復号化方法、暗号化方法および復号化方法
US20070067643A1 (en) * 2005-09-21 2007-03-22 Widevine Technologies, Inc. System and method for software tamper detection
US7817608B2 (en) * 2005-09-23 2010-10-19 Widevine Technologies, Inc. Transitioning to secure IP communications for encoding, encapsulating, and encrypting data
WO2007038245A2 (en) 2005-09-23 2007-04-05 Widevine Technologies, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
US8065733B2 (en) * 2005-09-23 2011-11-22 Google, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
EP2015506B1 (en) * 2005-11-08 2010-06-23 Irdeto Access B.V. Methods of scrambling and descrambling units of data
JP4482630B2 (ja) * 2005-11-21 2010-06-16 インターナショナル・ビジネス・マシーンズ・コーポレーション 通信装置および通信方法
US8689016B2 (en) 2005-12-02 2014-04-01 Google Inc. Tamper prevention and detection for video provided over a network to a client
KR20080080175A (ko) * 2005-12-14 2008-09-02 엔디에스 리미티드 블록 사이퍼 암호화의 사용을 위한 방법 및 시스템
US8526612B2 (en) * 2006-01-06 2013-09-03 Google Inc. Selective and persistent application level encryption for video provided to a client
US20070180231A1 (en) * 2006-01-31 2007-08-02 Widevine Technologies, Inc. Preventing entitlement management message (EMM) filter attacks
US8356178B2 (en) * 2006-11-13 2013-01-15 Seagate Technology Llc Method and apparatus for authenticated data storage
US8621093B2 (en) * 2007-05-21 2013-12-31 Google Inc. Non-blocking of head end initiated revocation and delivery of entitlements non-addressable digital media network
US8243924B2 (en) 2007-06-29 2012-08-14 Google Inc. Progressive download or streaming of digital media securely through a localized container and communication protocol proxy
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014167161A2 (es) 2013-04-10 2014-10-16 Elatentia, S.L. Dispositivo de cifrado simétrico y procedimiento empleado

Also Published As

Publication number Publication date
DE69416684T2 (de) 1999-09-02
AU683325B2 (en) 1997-11-06
EP0723726A1 (en) 1996-07-31
WO1995010906A1 (en) 1995-04-20
DK0723726T3 (da) 1999-10-25
US5799089A (en) 1998-08-25
NL9301784A (nl) 1995-05-01
ZA947822B (en) 1995-07-12
GR3030117T3 (en) 1999-07-30
ATE176970T1 (de) 1999-03-15
EP0723726B1 (en) 1999-02-24
DE69416684D1 (de) 1999-04-01
AU1078395A (en) 1995-05-04

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