31.
    发明专利
    未知

    公开(公告)号:BRPI0608201A2

    公开(公告)日:2009-12-01

    申请号:BRPI0608201

    申请日:2006-02-10

    Applicant: QUALCOMM INC

    Abstract: In a communication system in which two communication entities seek to have a private or confidential communication session, a trust relationship needs first be established. The trust relationship is based on the determination of a shared secret which in turn is generated from contextual information. The contextual information can be derived from the circumstances surrounding the communication session. For example, the contextual information can include topological information, time-based information, and transactional information. The shared secret may be self-generated or received from a third party. In either event, the shared secret may be used as key material for any cryptographic protocol used between the communication entities.

    32.
    发明专利
    未知

    公开(公告)号:DE602004016510D1

    公开(公告)日:2008-10-23

    申请号:DE602004016510

    申请日:2004-07-01

    Applicant: QUALCOMM INC

    Abstract: A method and an apparatus for secure registration for a multicast-broadcast-multimedia system (MBMS) are disclosed. A random number is generated by a broadcast-multicast-service center (BM-SC) and broadcast to user equipment in the coverage area of a radio access network (RAN). A memory module or smart card (UICC) in the user equipment generates a radio access network key (RAK) which is a function of the random number and a key selected from the group consisting of a public land mobile network key (PK) and a broadcast access key (BAK), and then generates a temporary registration key (RGK) as a function of the RAK, a service identification number and a user identification number, for example, P-TMSI, which may be extracted by the RAN to authenticate the registration as legitimate.

    SECRETO COMPARTIDO DE CONTEXTO LIMITADO.

    公开(公告)号:MX2007009790A

    公开(公告)日:2007-11-06

    申请号:MX2007009790

    申请日:2006-02-10

    Applicant: QUALCOMM INC

    Abstract: En un sistema de comunicacion en el cual dos entidades de comunicacion buscan tener una sesion de comunicacion confidencial o privada, se necesita establecer primero una relacion confiable; la relacion confiable esta basada en la determinacion de un secreto compartido el cual, a su vez, es generado a partir de informacion contextual; la informacion contextual se puede derivar de las circunstancias que rodean la sesion de comunicacion; por ejemplo, la informacion contextual puede incluir informacion topologica, informacion basada en tiempo, e informacion transaccional; el secreto compartido puede ser auto-generado o recibido de una tercera parte; en cualquier caso, el secreto compartido se puede utilizar como material clave para cualquier protocolo criptografico utilizado entre las entidades de comunicacion.

    36.
    发明专利
    未知

    公开(公告)号:BRPI0412397A

    公开(公告)日:2006-09-19

    申请号:BRPI0412397

    申请日:2004-07-08

    Applicant: QUALCOMM INC

    Abstract: Apparatus and method for provisioning an access key used for a controlled access broadcast service is disclosed. In one aspect, a method for secure processing in a device that securely stores a secret key comprises receiving a plurality of challenges from a network, generating a plurality of ciphering keys based on the secret key and the plurality of challenges, and generating an access key based on the plurality of ciphering keys.

    Context limited shared secret
    37.
    发明专利

    公开(公告)号:AU2006213650A1

    公开(公告)日:2006-08-17

    申请号:AU2006213650

    申请日:2006-02-10

    Applicant: QUALCOMM INC

    Abstract: In a communication system in which two communication entities seek to have a private or confidential communication session, a trust relationship needs first be established. The trust relationship is based on the determination of a shared secret which in turn is generated from contextual information. The contextual information can be derived from the circumstances surrounding the communication session. For example, the contextual information can include topological information, time-based information, and transactional information. The shared secret may be self-generated or received from a third party. In either event, the shared secret may be used as key material for any cryptographic protocol used between the communication entities.

    APPARATUS AND METHOD FOR A SECURE BROADCAST SYSTEM

    公开(公告)号:CA2531590A1

    公开(公告)日:2005-01-27

    申请号:CA2531590

    申请日:2004-07-08

    Applicant: QUALCOMM INC

    Abstract: Apparatus and method for provisioning an access key used for a controlled access broadcast service is disclosed. In one aspect, a method for secure processing in a device (figure 4, unit 430) that securely stores a secret ke y (figure 4, Kc) comprises receiving a plurality of challenges from a network, generating a plurality of ciphering keys based on the secret key and the plurality of challenges, and generating an access key based on the plurality of ciphering keys.

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