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    APPARATUS AND METHOD FOR INSTALLING A DECRYPTION KEY
    1.
    发明专利
    APPARATUS AND METHOD FOR INSTALLING A DECRYPTION KEY 未知

    公开(公告)号：CA2453109A1

    公开(公告)日：2003-01-23

    申请号：CA2453109

    申请日：2002-07-02

    Applicant: QUALCOMM INC

    Inventor： BEN-ZUR LIAT ,  HOSE JESSE ,  POMES PAUL ,  WINGERT CHRISTOPHER ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL ,  MURSFELDT CURTIS D

    IPC: H04L9/08 ,  H04L9/10 ,  H04N7/16 ,  H04N7/167 ,  H04N21/414

    Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor (312) is passed via a first interface path to a decryption processor. The algorithm is installed i n the decryption processor together with a program decryption key (328). The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on the decryption processor ove r the first interface path. The decryption processor decrypts the encrypted ke ys using the program decryption key. Decryption keys are thus obtained and are transferred (352) via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.

    2.
    发明专利
    未知

    公开(公告)号：BR0210946A

    公开(公告)日：2006-10-24

    申请号：BR0210946

    申请日：2002-07-02

    Applicant: QUALCOMM INC

    Inventor： BEN-ZUR LIAT ,  MUSFELDT CURTIS D ,  WINGERT CHRISTOPHER ,  POMES PAUL ,  HOSE JESSE ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL

    IPC: H04L9/08 ,  H04L9/10 ,  H04N7/16 ,  H04N7/167 ,  H04N21/414

    Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor is passed via a first interface path to a decryption processor. The algorithm is installed in the decryption processor together with a program decryption key. The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on to the decryption processor over the first interface path. The decryption processor decrypts the encrypted keys using the program decryption key. Decryption keys are thus obtained and are transferred via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.

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