BR9806124A - Métodos e aparelho para cmea otimizado empregando transformações otimizadas - Google Patents

Métodos e aparelho para cmea otimizado empregando transformações otimizadas

Info

Publication number
BR9806124A
BR9806124A BR9806124-0A BR9806124A BR9806124A BR 9806124 A BR9806124 A BR 9806124A BR 9806124 A BR9806124 A BR 9806124A BR 9806124 A BR9806124 A BR 9806124A
Authority
BR
Brazil
Prior art keywords
message
optimized
cmea
produce
tbox function
Prior art date
Application number
BR9806124-0A
Other languages
English (en)
Inventor
Mark H Etzel
Robert John Frank
Daniel Nelson Heer
Robert John Mcnelis
Semyon B Mizikovsky
Robert John France
R Dale Shipp
Original Assignee
Lucent Technologies Inc
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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR9806124A publication Critical patent/BR9806124A/pt

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
    • 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
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • 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
    • H04L2209/08—Randomization, e.g. dummy operations or using noise
    • 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
    • H04L2209/80—Wireless

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

MéTODOS E APARELHO PARA CMEA OTIMIZADO EMPREGANDO TRANSFORMAçõES OTIMIZADAS. Método de criptoprocessar CMEA otimizado de emissão para cada mensagem em uma chamada, para uso em um sistema de codificação CMEA empregado em um sistema de telefone sem fio compreendendo as etapas de introduzir uma mensagem não processada; criar um ou mais offsets secretos; realizar uma transformação na mensagem não processada para produzir uma mensagem transformada; realizar uma iteração de um processo CMEA na mensagem transformada para produzir uma mensagem de texto cifrado intermediária, a iteração do processo CMEA empregando um função tbox otimizada utilizando uma consulta involuntária, a função tbox recebendo entradas, as entradas para a função tbox otimizada sendo submetidas a uma permuta utilizando um ou mais dos offsets secretos para produzir um resultado de permuta; e realizar uma transformação inversa da mensagem de texto cifrado intermediária para produzir uma mensagem processada final. Aparelho telefónico sem fio para transmitir mensagens de forma segura, compreendendo: um transceptor; uma interface de entrada/saída; um gerador de código para gerar um ou mais códigos a serem usados durante uma chamada; e um criptoprocessador para receber a partir da interface de entrada/saída uma mensagem a ser codificada ou decodificada junto com identificação da mensagem como texto puro a ser codificado ou texto cifrado a ser decodificado e processando a mensagem como utilizando um processo CMEA otimizado de emissão incluindo uma transformação, uma iteração CMEA incluindo uma função tbox otimizada com entradas permutadas por um ou mais offsets secretos, a função tbox otimizada empregando uma tabela de consulta involuntária, e uma transformação inversa, o processador de codificação/decodificação sendo adicionalmente operativo para retornar a mensagem codificada ou decodificada para a interface de entrada/saída para encaminhamento adicional.
BR9806124-0A 1997-07-29 1998-07-29 Métodos e aparelho para cmea otimizado empregando transformações otimizadas BR9806124A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5401897P 1997-07-29 1997-07-29
PCT/US1998/015883 WO1999007103A1 (en) 1997-07-29 1998-07-29 Methods and apparatus for enhanced cmea employing enhanced transformations

Publications (1)

Publication Number Publication Date
BR9806124A true BR9806124A (pt) 1999-08-31

Family

ID=21988232

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9806124-0A BR9806124A (pt) 1997-07-29 1998-07-29 Métodos e aparelho para cmea otimizado empregando transformações otimizadas

Country Status (9)

Country Link
US (1) US6377687B1 (pt)
EP (1) EP0928526B1 (pt)
JP (2) JP3466204B2 (pt)
KR (1) KR100573180B1 (pt)
CN (1) CN1236516A (pt)
BR (1) BR9806124A (pt)
CA (1) CA2266665A1 (pt)
DE (1) DE69830646T2 (pt)
WO (1) WO1999007103A1 (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6075859A (en) * 1997-03-11 2000-06-13 Qualcomm Incorporated Method and apparatus for encrypting data in a wireless communication system
JP2001359165A (ja) * 2000-06-15 2001-12-26 Mitsubishi Electric Corp モバイル通信システム
DE10103608A1 (de) * 2001-01-28 2002-08-14 Audioton Kabelwerk Gmbh Freisprecheinrichtung für den Betrieb von Mobiltelefonen in Kraftfahrzeugen
DE10103609A1 (de) * 2001-01-28 2002-08-14 Audioton Kabelwerk Gmbh Freisprecheinrichtung für den Betrieb von Mobiltelefonen in Kraftfahrzeugen
CN1890914B (zh) * 2003-12-11 2011-07-27 耶德托公司 块加密系统、利用置换隐藏各加密轮的核心加密函数
US20050193197A1 (en) * 2004-02-26 2005-09-01 Sarvar Patel Method of generating a cryptosync
EP1926278B1 (en) * 2006-11-22 2009-04-01 Research In Motion Limited System and method for secure record protocol using shared knowledge of mobile user credentials

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1522775A (en) * 1922-04-14 1925-01-13 William F Friedman Secret-signaling apparatus for automatically enciphering and deciphering messages
US1516180A (en) * 1922-06-05 1924-11-18 William F Friedman Secret signaling system employing apparatus for automatically enciphering and deciphering messages
US5159634A (en) * 1991-09-13 1992-10-27 At&T Bell Laboratories Cryptosystem for cellular telephony
AU4373493A (en) * 1992-05-15 1993-12-13 Tecsec, Incorporated Voice and data encryption device
GB9211648D0 (en) * 1992-06-02 1992-07-15 Racal Datacom Ltd Data communication system
US5594797A (en) * 1995-02-22 1997-01-14 Nokia Mobile Phones Variable security level encryption

Also Published As

Publication number Publication date
KR20000068663A (ko) 2000-11-25
US6377687B1 (en) 2002-04-23
CA2266665A1 (en) 1999-02-11
WO1999007103A1 (en) 1999-02-11
CN1236516A (zh) 1999-11-24
DE69830646T2 (de) 2006-05-11
JP3466204B2 (ja) 2003-11-10
EP0928526B1 (en) 2005-06-22
JP2000508441A (ja) 2000-07-04
KR100573180B1 (ko) 2006-04-24
EP0928526A1 (en) 1999-07-14
DE69830646D1 (de) 2005-07-28
JP2003263109A (ja) 2003-09-19

Similar Documents

Publication Publication Date Title
MY135261A (en) Starting a session in a synchronization system
TR200402260T4 (tr) Mesajın kimliğini doğrulama (authentication) sistemi ve metodu.
EP2083283A3 (en) System and process for limiting distribution of information on a communication network based on geographic location
CA2305264A1 (en) Method and apparatus for generating a stream cipher
MY130611A (en) Methods and arrangements for secure linking of entity authentication and ciphering key generation
BR9903861A (pt) MEtodo para estabelecer convenção de chave de sessão
GB2296413A (en) A method of messaging in a communciation system
ATE313194T1 (de) Mehrstufiges system und verfahren zur verarbeitung der kodierten nachrichten
HK1011806A1 (en) A method and network for communicating between a group of entities a text encrypted using an encryption key intrinsic to the group of entities in a network having a plurality of entities and a center
GEP20063743B (en) Method and System for Implicit User Equipment Identification
AU2002322869A1 (en) System and method for processing encoded messages
EP1073233A3 (en) Method and apparatus for performing a key update using bidirectional validation
EP1124401A3 (en) Method and apparatus for performing a key update using update key
DE60237125D1 (de) Verfahren in einer Mobilstation
IT1135249B (it) Metodo di codificazione e decodificazione di messaggi
GB2302246A (en) Apparatus for generating encryption/decryption look-up tables using a session key
TW281834B (en) Message fragmentation in a time diversity radio system
BR9806124A (pt) Métodos e aparelho para cmea otimizado empregando transformações otimizadas
BR0214690A (pt) Equipamento e método para uso de uma chave de cifra em uma rede de comunicações hìbrida
BR0315608A (pt) Método e sistema para combinar códigos em um sistema de comunicação
DE60037530D1 (de) Erzeugung von zufallszahlen zur verschlüsselung von zellularkommunikationen
AR039072A1 (es) Autenticacion en una red de comunicaciones hibrida
NO923945L (no) System for aa hindre en scrambler i aa generere uoenskede symboler
WO1998047262A3 (en) Methods and apparatus for multiple-iteration cmea encryption and decryption for improved security for wireless telephone messages
FR2786049B1 (fr) Procede de cryptographie a cle dynamique

Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]