PROBLEM TO BE SOLVED: To solve the problem, wherein it is impossible for an electronic content information provider to provide commercially secure and effective method, for a configurable general-purpose electronic commercial transaction/distribution control system. SOLUTION: In this system, having at least one protected processing environment for safely controlling at least one portion of decoding of digital information, a secure content distribution method comprises a process for encapsulating digital information in one or more digital containers; a process for encrypting at least a portion of digital information; a process for associating at least partially secure control information for managing interactions with encrypted digital information and/or digital container; a process for delivering one or more digital containers to a digital information user; and a process for using a protected processing environment, for safely controlling at least a portion of the decoding of the digital information. COPYRIGHT: (C)2006,JPO&NCIPI

https://apps.dtic.mil/dtic/tr/fulltext/u2/a423264.pdf

Systems and Methods for Secure Transaction Management and Electronic Rights Protection

A method and system for synchronizing a main database of a server and a local database of a handheld device. A user can use an application residing in the handheld device to make transactions in the local database. During a synchronization operation, the handheld device and server are coupled. The system then determines whether the application should be updated and, if so, causes the server to provide an update. The system also causes the handheld device to provide to the server information related to the transactions made by the user to the local database. The system causes the server to perform transactions on the main database based on the transaction information. The system also causes the server to extract data from the main database. The server can then provide at least some of the extracted data to the handheld device to update the local database.

Method and system for server synchronization with a computing device

According to one aspect of the present invention, a system is provided to support a web-based application. The system comprising a set of server-side objects managed by an object manager (OM), the set of server-side objects including a global session object providing access to a repository, a server-side business object, and server-side business components contained in the server-side business object. The system further comprises a set of browser-side objects running on a browser, the set of browser-side objects including a browser-side application object that exists throughout a user-session to manage other browser-side objects. The system also comprises a remote procedure call (RPC) mechanism and a notification mechanism to facilitate communication and synchronization between the browser-side objects and the server-side objects.

Method, apparatus, and system for implementing a framework to support a web-based application

According to one aspect of the present invention, a system is provided for implementing view caching in a framework to support web-based applications. The system comprising a set of server-side objects managed by an object manager (OM) running on a server. The system further comprises a set of browser-side objects running on a browser running on a client. The system also comprises a remote procedure call (RPC) mechanism and a notification mechanism to facilitate communication and synchronization between the browser-side objects and the server-side objects. The system additionally comprises a cache on the client to store layouts of views, wherein each view is a display panel consisting of a particular arrangement of applets.

Method, apparatus, and system for implementing view caching in a framework to support web-based applications

A method and system for direct server synchronization (100) with a computing device is disclosed. In one embodiment, the method comprises synchronizing directly a handheld device (110) and an enterprise server (130), which comprises retrieving a record extraction sequence from the server; and extracting records stored on a database according to the record extraction sequence, wherein the extracted records are not already stored on the computing device.

Method and system for direct server synchronization with a computing device

A method and system for leasing storage locations in a distributed processing system is provided. Consistent with this method and system, a client requests access to storage locations for a period of time (lease period) from a server, such as the file system manager. Responsive to this request, the server invokes a lease period algorithm, which considers various factors to determine a lease period during which time the client may access the storage locations. After a lease is granted, the server sends an object to the client that advises the client of the lease period and that provides the client with behavior to modify the lease, like canceling the lease or renewing the lease. The server supports concurrent leases, exact leases, and leases for various types of access. After all leases to a storage location expire, the server reclaims the storage location.

Method and system for leasing storage

An improved lookup service is provided that allows for the dynamic addition and deletion of services. This lookup service allows for the addition and deletion of services automatically, without user intervention. As a result, clients of the lookup service may continue using the lookup service and its associated services while the updates occur. Additionally, the lookup service provides a notification mechanism that can be used by clients to receive a notification when the lookup service is updated. By receiving such a notification, clients can avoid attempting to access a service that is no longer available and can make use of new services as soon as they are added to the lookup service.

Dynamic lookup service in a distributed system

In a client-server environment it would be desirable to have a number of servers capable of processing a broad range of applications such as compute intensive applications or graphic operations such as rendering. In a heterogeneous client-server environment, conventional systems statically stored executables on a server for later execution. This required extensive storage as well as many programmer hours porting applications to the server machine from client machines which had different object modules. This invention solves these problems by creating a homogeneous execution environment within a heterogenous client-server network. Accordingly, this system dynamically downloads code on a compute server, executes the code on the compute server, and returns the results to the calling client method. This technique does not require multiple copies of code to be downloaded nor compiled since the server code can be executed on all the different systems. A system designed according to the this technique is also efficient. The server code is generally compiled locally on the client and downloaded to the server as byte-codes and then executed.

Method and apparatus for dynamic distributed computing over a network

A method and system is provided to uniquely identify a remote method to invoke on a server using a hash value computed from the method signature sent from the client to the server with the call request. When a client wishes to invoke a remote method located on a server, the client sends a hash value identifying the remote method to the server in the 'remote method invocation' (RMI) call. In one implementation, this hash value is created by applying a hash function to the method string name and the parameter type list and possibly the return type. When the server receives the RMI call, the server identifies which method is being called using the received hash value. The server maintains a mapping of hash values to their associated remote methods located on the server and references the correct method using the hash value. Additionally, in one implementation, the server creates the mapping table dynamically when a remote object is created. The server identifies the methods implemented by the object and creates hash values for each method. These hash values are stored in a mapping table which is used to reference the remote methods.

Method and system for deterministic hashes to identify remote methods

A system for using a lease to detect a failure and to perform failure recovery is provided. In using this system, a client requests a lease from a server to utilize a resource managed by the server for a period of time. Responsive to the request, the server grants the lease, and the client continually requests renewal of the lease. If the client fails to renew the lease, the server detects that an error has occurred to the client. Similarly, if the server fails to respond to a renew request, the client detects that an error has occurred to the server. As part of the lease establishment, the client and server exchange failure-recovery routines that each invokes if the other experiences a failure.

Ann M. Wollrath

Papers

Method and system for leasing storage

Dynamic lookup service in a distributed system

Method and apparatus for dynamic distributed computing over a network

Method and system for deterministic hashes to identify remote methods

Leasing for failure detection