Method and apparatus for generating encryption stream ciphers

    公开(公告)号:AU3696800A

    公开(公告)日:2000-08-25

    申请号:AU3696800

    申请日:2000-02-04

    Applicant: QUALCOMM INC

    Abstract: A method and an apparatus for generating encryption stream ciphers are based on a recurrence relation designed to operate over finite fields larger than GF(2). A non-linear output can be obtained by using one or a combination of non-linear processes to form an output function. The recurrence relation and the output function can be selected to have distinct pair distances such that, as the shift register is shifted, no identical pair of elements of the shift register are used twice in either the recurrence relation or the output function. Under these conditions, the recurrence relation and the output function also can be chosen to optimize cryptographic security or computational efficiency. Moreover, it is another object of the present invention to provide a method of assuring that the delay that results for the encryption process does not exceed predetermined bounds. To this end the ciphering delay is measured and if the estimated delay exceeds a predetermined threshold a second ciphering method is employed to limit the accumulated delay of the ciphering operation.

    método e equipamento para um provedor de software autenticar usuários de software

    公开(公告)号:BRPI0016507B1

    公开(公告)日:2016-02-10

    申请号:BR0016507

    申请日:2000-12-21

    Applicant: QUALCOMM INC

    Abstract: "método para autenticação de usuários anônimos reduzindo concomitantemente o potencial de fraude por intermediários". um método para autenticação de usuários anônimos reduzindo concomitantemente o potencial de fraude por intermediários inclui a etapa de montar um quebra cabeças em resposta a informações recebidas a partir de um usuário de software. o quebra cabeças inclui as informações recebidas. o quebra cabeças é enviado ao usuário por um provedor de software. o usuário soluciona o quebra cabeças e devolve a solução ao provedor. o quebra cabeças inclui uma porção de um valor derivado a partir de um "cookie" criptografado e uma exponenciação do valor derivado. o cookie inclui informações a respeito do usuário.

    PROCEDIMIENTO Y APARATO PARA ENCRIPTAR SEÑALES PARA SU TRANSMISION.

    公开(公告)号:ES2343491T3

    公开(公告)日:2010-08-02

    申请号:ES98915133

    申请日:1998-03-04

    Applicant: QUALCOMM INC

    Inventor: ROSE GREGORY G

    Abstract: Un procedimiento de transformación de un conjunto de señales de mensaje que representan un mensaje para su transmisión en un sistema de comunicaciones, comprendiendo el procedimiento: codificar en primer lugar una de dicho conjunto de señales de mensaje según una primera transformación por clave caracterizado por las etapas de: codificar en segundo lugar dicha primera señal codificada de dicho conjunto de señales de mensaje según al menos una transformación por clave adicional; codificar en tercer lugar dicha segunda señal codificada de dicho conjunto de señales de mensaje según una transformación de autoinversión en la que se altera al menos una de dicho conjunto de señales de mensaje; codificar en cuarto lugar dicha tercera señal codificada de dicho conjunto de señales de mensaje según al menos una transformación por clave inversa adicional en el que cada una de dicha al menos una transformación por clave inversa adicional es una inversa correspondiente de dicha al menos una transformación por clave adicional; codificar en quinto lugar dicha cuarta señal codificada de dicho conjunto de señales de mensaje según una primera transformación por clave inversa en el que dicha primera transformación por clave inversa es la inversa de dicha primera transformación por clave; y caracterizado porque dicha etapa de codificar en primer lugar se realiza según una primera tabla, y en el que dicha etapa de codificar en segundo lugar se realiza según una tabla diferente, o dicha etapa de codificar en primer lugar se realiza según una primera dirección, y en el que dicha etapa de codificar en segundo lugar se realiza según al menos una dirección adicional.

    Method and apparatus for security in a data processing system

    公开(公告)号:AU2004300912B2

    公开(公告)日:2010-07-22

    申请号:AU2004300912

    申请日:2004-07-08

    Applicant: QUALCOMM INC

    Abstract: Method and apparatus for secure transmissions. Each user is provided a registration key. A long-time updated broadcast key is encrypted using the registration key and provided periodically to a user. A short-time updated key is encrypted using the broadcast key and provided periodically to a user. Broadcasts are then encrypted using the short-time key, wherein the user decrypts the broadcast message using the short-time key. One embodiment provides link layer content encryption. Another embodiment provides end-to-end encryption.

    66.
    发明专利
    未知

    公开(公告)号:DE69841641D1

    公开(公告)日:2010-06-10

    申请号:DE69841641

    申请日:1998-03-04

    Applicant: QUALCOMM INC

    Inventor: ROSE GREGORY G

    Abstract: In a communications system, a method of transforming a set of message signals representing a message comprising the steps of first encoding one of the set of message signals in accordance with a first keyed transformation, a second encoding of the one of the set of message signals in accordance with at least one additional keyed transformation, a third encoding of the one of the set of message signals in accordance with a self-inverting transformation in which at least one of the set of message signals is altered, a fourth encoding of the one of the set of message signals in accordance with at least one additional inverse keyed transformation wherein each of the at least one additional inverse keyed transformation is a corresponding inverse of at least one additional keyed transformation, and fifth encoding the one of the set of message signals in accordance with first inverse keyed transformation wherein the first inverse keyed transformation is the inverse of the first keyed transformation.

    67.
    发明专利
    未知

    公开(公告)号:DE602007003462D1

    公开(公告)日:2010-01-07

    申请号:DE602007003462

    申请日:2007-04-16

    Applicant: QUALCOMM INC

    Abstract: Various operations may be performed based on a distance-related function associated with two or more devices. For example, an association procedure for two or more devices may be based on one or more determined distances. Similarly, presence management may be based on one or more determined distances. A distance-related function may take various form including, for example, a distance between devices, two or more distances between devices, a rate of change in a relative distance between devices, relative acceleration between devices, or some combination of two or more of the these distance-related functions.

    METHOD OF AND APPARATUS FOR ENCRYPTING SIGNALS FOR TRANSMISSION

    公开(公告)号:CA2603164C

    公开(公告)日:2009-06-16

    申请号:CA2603164

    申请日:1998-03-04

    Applicant: QUALCOMM INC

    Inventor: ROSE GREGORY G

    Abstract: In a communications system, a method of transforming a set of message signals representing a message comprising the steps of first encoding one of the set of message signals in accordance with a first keyed transformation, a second encoding of the one of the set of message signals in accordance with at least one additional keyed transformation, a third encoding of the one of the set of message signals in accordance with a self-inverting transformation in which at least one of the set of message signals is altered, a fourth encoding of the one of the set of message signals in accordance with at least one additional inverse keyed transformation wherein each of the at least one additional inverse keyed transformation is a corresponding inverse of at least one additional keyed transformation, and fifth encoding the one of the set of message signals in accordance with first inverse keyed transformation wherein the first inverse keyed transformation is the inverse of the first keyed transformation.

    System and method for acoustic two factor authentication

    公开(公告)号:AU2003219752B2

    公开(公告)日:2008-05-22

    申请号:AU2003219752

    申请日:2003-02-12

    Applicant: QUALCOMM INC

    Abstract: Apparatus and method are disclosed for digital authentication and verification. In one embodiment, authentication involves storing a cryptographic key and a look up table (LUT), generating an access code using the cryptographic key; generating multiple parallel BPSK symbols based upon the access code; converting the BPSK symbols into multiple tones encoded with the access code using the LUT; and outputting the multiple tones encoded with the access code for authentication. In another embodiment, verification involves receiving multiple tones encoded with an access code; generating multiple parallel BPSK symbols from the multiple tones; converting the BPSK symbols into an encoded interleaved bit stream of the access code; de-interleaving the encoded interleaved bit stream; and recovering the access code from the encoded de-interleaved bit stream.

    AUTENTICACION LOCAL EN UN SISTEMA DE COMUNICACION.

    公开(公告)号:ES2279868T3

    公开(公告)日:2007-09-01

    申请号:ES02737051

    申请日:2002-05-21

    Applicant: QUALCOMM INC

    Abstract: Un dispositivo (230) de identificación de abonado para proporcionar autenticación local de un abonado en un sistema de comunicación, que comprende: medios para la generación de una pluralidad de claves (290, 310, 320) en respuesta a un desafío recibido; medios para la generación de un valor inicial basado en una primera clave (320) de la pluralidad de claves; y para la concatenación del valor inicial con una señal (340) recibida para formar una firma de entrada, en el que la señal (340) recibida se transmite desde una unidad (220) de comunicación que funciona en un sistema acoplado de forma comunicativa al dispositivo (230) de identificación de abonado, y la señal (340) recibida se genera mediante la unidad (220) de comunicación utilizando una segunda clave (310) de la pluralidad de claves, habiéndose comunicado la segunda clave (310) desde el dispositivo (230) de identificación de abonado a la unidad (220) de comunicación; medios de direccionamiento calculado de la firma de entrada para formar una firma (370) de autenticación; y medios para la transmisión de la firma (370) de autenticación al sistema de comunicación a través de la unidad (220) de comunicación.

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