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    PREPARING MULTIMEDIA CONTENT
    2.
    发明专利
    PREPARING MULTIMEDIA CONTENT 未知

    公开(公告)号：AU2002321589A1

    公开(公告)日：2003-06-30

    申请号：AU2002321589

    申请日：2002-09-02

    Applicant: IBM

    Inventor： ORCHARD JAMES RONALD LEWIS

    IPC: G06F13/00 ,  H04N7/24 ,  G06F17/30

    Abstract: A method and system for preparing multimedia content, whereby the multimedia content comprises at least one file, comprising content data and associated security functions. The content data further comprises associated characteristics. The system comprises at least one server machine comprising storage for storing the file, at least one client machine comprising means for rendering the file and a network. Firstly, the client machine requests the file (e.g. a movie file). Next, the server machine determines whether it has the file stored in memory. If the file is present, the file's associated security functions (e.g. encryption etc.) are obtained and the file's content data is analyzed to obtain the associated characteristics (e.g. bit rate etc.). Finally, the associated security functions and the associated characteristics are combined into a data structure.

    Controlling access to electronically provided data or services
    6.
    发明专利
    Controlling access to electronically provided data or services 未知

    公开(公告)号：GB2329497A

    公开(公告)日：1999-03-24

    申请号：GB9719874

    申请日：1997-09-19

    Applicant: IBM

    Inventor： LAMBERT HOWARD SHELTON ,  ORCHARD JAMES RONALD LEWIS

    IPC: G06F1/00 ,  G06F21/62 ,  G07F7/10 ,  H04L9/08 ,  G06F12/14

    Abstract: The security of stored data and applications is improved by an access control system and method in which user keys for accessing the stored data/services (which keys are provided to users) are representative of the user's level of authority, such that there is no need to maintain a separate lookup table of user authority levels. This removes a potential security exposure from the system. The user keys are advantageously hierarchical, including data for generating a plurality of different access keys for different access levels. The access keys may be decryption keys for encrypted data or application programs. The invention is applicable to SmartCard systems.

    Smartcard transaction processing
    7.
    发明专利
    Smartcard transaction processing 未知

    公开(公告)号：GB2328042A

    公开(公告)日：1999-02-10

    申请号：GB9715744

    申请日：1997-07-26

    Applicant: IBM

    Inventor： LAMBERT HOWARD SHELTON ,  ORCHARD JAMES RONALD LEWIS

    IPC: G06F11/14 ,  G07F7/02 ,  G07F7/10

    Abstract: A method of executing a transaction between a smartcard and an external terminal adapted to access related data comprises determining from the data stored on the smartcard and the related data whether the transaction can be executed validly; if so, executing the transaction and in the event of the smartcard or the external terminal failing to execute the transaction, restoring 108 the smartcard data and the related data to their pre-transaction states. The smartcard may use a Java environment in which, before the determining steps are carried out, a stream of references to objects is created 100 which update 102 data in the transaction and when the transaction is complete the references are removed. A smartcard is also provided including means to determine whether a transaction can be validly executed and commit means to execute the transaction, together with a transaction processing system including such a smartcard and a terminal.

    Mechanism for allowing access to unsecured resources via a security engine using inverted security policies
    8.
    发明专利
    Mechanism for allowing access to unsecured resources via a security engine using inverted security policies 未知

    公开(公告)号：GB2442273A

    公开(公告)日：2008-04-02

    申请号：GB0619203

    申请日：2006-09-29

    Applicant: IBM

    Inventor： COLGRAVE JOHN ,  ORCHARD JAMES RONALD LEWIS ,  WHITTINGHAM GARY OWEN

    IPC: G06F21/60

    Abstract: A system provides a number of resources, some of which are subjected to security policies and some of which are not. For secured resources a policy specifying how the resource may be used and by whom is drawn up as usual (Fig. 4a). The system then creates a complementary policy which specifies that all users can use the resource (Fig. 4b). For unsecured resources no security policies are created. When access to a resource is requested 302 the normal policy is checked in the normal fashion 304 and access allowed 306 or denied as usual. If usual access is denied then the complementary policy is checked 310, however the result of this check is inverted. That is, where a policy allows blanket access the access is denied 314 . Whereas where there is no access policy the access is allowed 312. In this fashion access to the unsecured resources with no security policies is facilitated (Fig. 4c).

    Smartcard transaction processing
    9.
    发明专利
    Smartcard transaction processing 未知

    公开(公告)号：GB2328042B

    公开(公告)日：2002-10-09

    申请号：GB9715744

    申请日：1997-07-26

    Applicant: IBM

    Inventor： LAMBERT HOWARD SHELTON ,  ORCHARD JAMES RONALD LEWIS

    IPC: G06F11/14 ,  G07F7/02 ,  G07F7/10

    Abstract: A method of executing a transaction on a smartcard of the type including a processor, a memory for storing a system program, an application programs and for storing data and an interface enabling communication with an external processor in a local terminal adapted to access related data is disclosed. The method comprises the steps of: determining from the data stored on the smartcard in a pre-transaction state if the transaction can be executed validly by the smartcard (102); determining from the related data stored in a pre-transaction state and accessible by said external processor if the transaction can be executed validly by the external processor (102); in response to said determining steps being affirmative, executing said transaction on said smartcard and by said external processor (105); and in response to said smartcard or said external processor failing to execute said transaction, restoring said data and said related data to the or each pre-transaction state (108).

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