CO5300374A1 - Metodo y dispositivo para el control efectivo de la longitud de clave - Google Patents

Metodo y dispositivo para el control efectivo de la longitud de clave

Info

Publication number
CO5300374A1
CO5300374A1 CO00029649A CO00029649A CO5300374A1 CO 5300374 A1 CO5300374 A1 CO 5300374A1 CO 00029649 A CO00029649 A CO 00029649A CO 00029649 A CO00029649 A CO 00029649A CO 5300374 A1 CO5300374 A1 CO 5300374A1
Authority
CO
Colombia
Prior art keywords
encryption key
input
elements
output
except
Prior art date
Application number
CO00029649A
Other languages
English (en)
Inventor
Ben Smeets
Mattias Hansson
Joakim Persson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of CO5300374A1 publication Critical patent/CO5300374A1/es

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Accounting & Taxation (AREA)
  • General Physics & Mathematics (AREA)
  • Strategic Management (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • Finance (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Lock And Its Accessories (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Computer And Data Communications (AREA)

Abstract

Un dispositivo de comunicación para calcular una clave de cifrado, K'c9 manipulando una clave de cifrado, K'c9 para utilizarse en un algoritmo de encriptado; dicho dispositivo consta de:un elemento de memoria para almacenar uno o más polinomios;una pluralidad de elementos de conmutación, cada uno con una primera entrada, una segunda entrada y una salida, donde dichos elementos de conmutación de primera entrada están conectados a dicho elementos de memoria;una pluralidad de elementos de retardo, cada uno con una entrada y una salida, donde dicha salida de uno de dichos elementos de retardo está conectado a dichos elementos de segundas entradas; yuna pluralidad de funciones de adición, cada una con una primera entrada, una segunda entrada y una salida, donde:dichas primeras entradas de funciones de adición están conectadas a todas excepto a una salida de dichos elementos de retardo,dichas segundas entradas de función de adición están conectadas a todas excepto a una de salidas de dichos elementos, ydichas salidas de función de adición están conectadas a todas excepto a una de dichos entradas de elementos de retardo.1 Un método para calcular una clave de encriptado, K'c(x), para encriptar datos que constan de los siguientes pasos:obtener una clave de cifrado, K'c9;determinar una longitud de clave de cifrado máxima, L; determinar una longitud de clave de encriptado utilizable máxima, Lmaxobtener un polinomio g1(x);obtener un polinomio g2(x), para extender los puntos de partida de dicha clave de encriptado, K'c(x); ycalcular dicha clave de encriptado, K'c9donde K'c(x) = g2(L)(x) [K'c(x) mod g1(L)(x)]. <EMI FILE="00029649_1" ID="1" IMF=JPEG >
CO00029649A 1999-04-26 2000-04-25 Metodo y dispositivo para el control efectivo de la longitud de clave CO5300374A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13094499P 1999-04-26 1999-04-26
US09/461,766 US6947560B1 (en) 1999-04-26 1999-12-15 Method and device for effective key length control

Publications (1)

Publication Number Publication Date
CO5300374A1 true CO5300374A1 (es) 2003-07-31

Family

ID=26828998

Family Applications (1)

Application Number Title Priority Date Filing Date
CO00029649A CO5300374A1 (es) 1999-04-26 2000-04-25 Metodo y dispositivo para el control efectivo de la longitud de clave

Country Status (12)

Country Link
US (1) US6947560B1 (es)
EP (1) EP1171971B1 (es)
JP (1) JP4668428B2 (es)
CN (2) CN1332524C (es)
AR (1) AR023605A1 (es)
AT (1) ATE298481T1 (es)
AU (1) AU4913000A (es)
BR (1) BR0010029B1 (es)
CO (1) CO5300374A1 (es)
DE (1) DE60020953T2 (es)
MY (1) MY123139A (es)
WO (1) WO2000065768A1 (es)

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WO2004105306A1 (en) * 2003-05-23 2004-12-02 Koninklijke Philips Electronics N.V. Method and apparatus for a low memory hardware implementation of the key expansion function
US7570641B2 (en) * 2005-08-23 2009-08-04 Macrovision Corporation Techniques for watermarking and distributing content
US8183980B2 (en) * 2005-08-31 2012-05-22 Assa Abloy Ab Device authentication using a unidirectional protocol
US7873166B2 (en) * 2005-09-13 2011-01-18 Avaya Inc. Method for undetectably impeding key strength of encryption usage for products exported outside the U.S
US20080037775A1 (en) * 2006-03-31 2008-02-14 Avaya Technology Llc Verifiable generation of weak symmetric keys for strong algorithms
WO2010019593A1 (en) 2008-08-11 2010-02-18 Assa Abloy Ab Secure wiegand communications
US20170070481A1 (en) * 2015-09-03 2017-03-09 Pilixo Limited Communication channel security against packet sniffing
US10452877B2 (en) 2016-12-16 2019-10-22 Assa Abloy Ab Methods to combine and auto-configure wiegand and RS485
US11621837B2 (en) 2020-09-03 2023-04-04 Theon Technology Llc Secure encryption of data using partial-key cryptography
US11310042B2 (en) 2020-09-11 2022-04-19 Crown Sterling Limited, LLC Methods of storing and distributing large keys
US11552780B2 (en) 2020-12-23 2023-01-10 Theon Technologies, Inc. Homomorphic one-time pad encryption
US11755772B2 (en) 2021-09-20 2023-09-12 Crown Sterling Limited, LLC Securing data in a blockchain with a one-time pad
US11791988B2 (en) 2021-11-22 2023-10-17 Theon Technology Llc Use of random entropy in cryptography
US11943336B2 (en) 2021-11-22 2024-03-26 Theon Technology Llc Use of gradient decent function in cryptography
US11902420B2 (en) 2021-11-23 2024-02-13 Theon Technology Llc Partial cryptographic key transport using one-time pad encryption

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Also Published As

Publication number Publication date
CN1558592A (zh) 2004-12-29
US6947560B1 (en) 2005-09-20
BR0010029B1 (pt) 2014-02-04
AU4913000A (en) 2000-11-10
DE60020953T2 (de) 2005-12-01
AR023605A1 (es) 2002-09-04
EP1171971A1 (en) 2002-01-16
EP1171971B1 (en) 2005-06-22
CN1348646A (zh) 2002-05-08
JP4668428B2 (ja) 2011-04-13
MY123139A (en) 2006-05-31
BR0010029A (pt) 2002-01-15
CN1332524C (zh) 2007-08-15
WO2000065768A1 (en) 2000-11-02
ATE298481T1 (de) 2005-07-15
DE60020953D1 (de) 2005-07-28
CN1282323C (zh) 2006-10-25
JP2002543667A (ja) 2002-12-17

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