Abstract: A data management method includes: in a case where A denotes a set of symbols, A* denotes a set of all character strings composed of the symbols in A, L denotes a subset of A, and h(L) denotes a mapping performed on L with h that denotes a cryptographical hash function, regarding h: A*?A, multiple peers each hold an inverse mapping hL?1 of hL: L?h(L) that denotes a partial mapping of h, and in a case where at least one original data item M and an encrypted data item C encrypted from the original data item M are present, the encrypted data item C being held in hL?1, and correspondence between the original data item M and the encrypted data item C is to be validated, calculating a hash value h(M); decrypting the encrypted data item C with a hash value k; and comparing a result of the decrypting with the original data item M.

Abstract: An information processing apparatus includes a first management unit that manages information of an object, of which at least one of a parent or a child is determined, by a memory within the information processing apparatus, a second management unit that manages information of an object, of which at least one of a parent or a child is determined, by a memory accessible from plural information processing apparatuses, a receiving unit that receives a request which is intended for a target object managed by the first management unit or the second management unit, and a processing unit that performs processing corresponding to the request on information of the target object based on a comparison result between an owner object for which the piece of authority information is authorized and an object which is a parent of the authority object.

Abstract: A data management method includes: in a case where A denotes a set of symbols, A* denotes a set of all character strings composed of the symbols in A, L denotes a subset of A, and h(L) denotes a mapping performed on L with h that denotes a cryptographical hash function, regarding h: A*?A, multiple peers each hold an inverse mapping hL?1 of hL: L?h(L) that denotes a partial mapping of h, and in a case where at least one original data item M and an encrypted data item C encrypted from the original data item M are present, the encrypted data item C being held in hL?1, and correspondence between the original data item M and the encrypted data item C is to be validated, calculating a hash value h(M); decrypting the encrypted data item C with a hash value k; and comparing a result of the decrypting with the original data item M.

Abstract: An information processing apparatus includes a first management unit that manages information of an object, of which at least one of a parent or a child is determined, by a memory within the information processing apparatus, a second management unit that manages information of an object, of which at least one of a parent or a child is determined, by a memory accessible from plural information processing apparatuses, a receiving unit that receives a request which is intended for a target object managed by the first management unit or the second management unit, and a processing unit that performs processing corresponding to the request on information of the target object based on a comparison result between an owner object for which the piece of authority information is authorized and an object which is a parent of the authority object.

Abstract: An information processing system includes a management unit that manages information of an object that determines at least one of a parent and a child of the object, a receiving unit that receives specification of an authority object that is an object with which authority information is associated and a request of processing that is to be executed by using the authority object, and a determining unit that determines whether to accept the request or not on the basis of results of a comparison between information of an owner object that is an object that approves the authority information and information of an object that is a parent of the authority object.

Abstract: An information processing system includes a management unit, an accepting unit, and a providing unit. The management unit manages information on an object whose parent or child is defined. The accepting unit accepts a reading request for a to-be-provided object managed by the management unit, the request including designation of an authority object with which authority information is associated. The providing unit provides information on the to-be-provided object, on the basis of a result of comparison of authority between an owner object that is an object approving the authority information and an object that is a parent of the authority object. The providing unit provides, for a data item not included in the to-be-provided object, information on a data item of an ancestor object included in a series that recursively traces a parent of the to-be-provided object and further a parent thereof.

Abstract: An information processing system includes a managing unit, a receiving unit, an acquiring unit, and a processing unit. The managing unit manages information about an object for which at least one of a parent and a child is defined. The receiving unit receives a request for a process including specification of an authorized object with which authority information is associated. The acquiring unit acquires a function object associated with the authorized object. The processing unit executes the function object to process the request.

Abstract: An information processing system includes a managing unit that manages objects for each of which at least one of a parent and a child is defined, an element name and an element value of an element composing content being associated with at least part of the objects in the managing unit; a receiving unit that receives a request for a process including specification of an authorized object with which authority information is associated; a setting unit that sets a target object on the basis of the authorized object and, if the element name specified in the request is not associated with the target object, repeats a process of setting a parent object of the target object as a new target object until a predetermined condition is met; and a responding unit that otherwise returns the element value associated with the target object as a response to the request.

Abstract: An information processing system includes a management unit that manages information of an object that determines at least one of a parent and a child of the object, a receiving unit that receives specification of an authority object that is an object with which authority information is associated and a request of processing that is to be executed by using the authority object, and a determining unit that determines whether to accept the request or not on the basis of results of a comparison between information of an owner object that is an object that approves the authority information and information of an object that is a parent of the authority object.

Abstract: A document handling history management system, which includes: a first calculation section that calculates a first value based on a document which is an object of referencing operation; an operation history information generation section that generates operation history information that includes the first value; a second calculation section that calculates a second value based on the operation history information; a referencing information generation section that generates referencing information of the document, the referencing information being used for the referencing operation and including the second value; a reading section that reads first attribute information of the document, the first attribute information being to be rewritten to second attribute information when the referencing operation of the document is performed; a storing section that stores setting information in the first attribute information; and a rewriting section that rewrites the second attribute information to the first attribute inf

Abstract: A document processing system includes a first acquisition section, a storage section, a second acquisition section and a data processor. The first acquisition section acquires a position specified by a user in an actual document. The storage section stores layout data of the document and content data of the document associated with the layout data. The second acquisition section acquires data in the specified position from the content data of the document stored in the storage section, based on the layout data stored in the storage section and the specified position. The data processor processes the data acquired by the second acquisition section.

Abstract: The document management server includes an identification information providing unit that receives a request to obtain identification information required for accessing a document from a client, generates the identification information for the received request, and sends the generated identification information to the client; a relation information management unit that manages relation information of the requested document and the identification information generated for the request; and a history information management unit that manages information on the client who has sent the request, associating with the identification information.

Abstract: There is provided a document management server including a receiving unit that receives an access request and a first ID representing a document to be an object of the access request, an ID processing unit that issues, when an operation is performed on the document in response to the access request, a second ID corresponding to the operation, and records a derivation relationship having the second ID as a child of the first ID, an attribute recording unit that records attribute information relating to the operation by association with the first ID or the second ID, and a response data provider unit that provides, when the document is provided to the client in response to the access request, response data including attribute information associated with at least one ID appearing in a path from the received ID accompanying the access request to a root of a derivation relationship.

Abstract: An electronic-document management system includes an acquisition unit, an edit unit, first and second storage units, a generation unit and an output unit. The acquisition unit acquires a target electronic document. The edit unit edits the acquired target electronic document. The first storage unit stores the target electronic document edited by the edit unit and a feature value of the edited target electronic document in association with each other. The generation unit generates meta-information of the edited target electronic document, which comprises a feature value of the edited target electronic document. The second storage unit stores the meta-information of the edited target electronic document and a feature value of the meta-information of the edited target electronic document in association with each other. The output unit outputs the feature value of the meta-information of the edited target electronic document as reference information of the edited target electronic document.

Abstract: An information processing system includes a server computer system which holds pieces of data as processing objects and characteristic values calculated on the basis of the pieces of data while associating the pieces of data with the characteristic values respectively, accepts a characteristic value as information requesting a piece of data as a processing object from a requester and selects the piece of data associated with the accepted characteristic value from the held pieces of data so as to provide the piece of data to the requester; and a client-side computer system which is communicatably connected to the server computer system and acquires pieces of data as processing objects from the server computer system.

Abstract: A document handling history management system, which includes: a first calculation section that calculates a first value based on a document which is an object of referencing operation; an operation history information generation section that generates operation history information that includes the first value; a second calculation section that calculates a second value based on the operation history information; a referencing information generation section that generates referencing information of the document, the referencing information being used for the referencing operation and including the second value; a reading section that reads first attribute information of the document, the first attribute information being to be rewritten to second attribute information when the referencing operation of the document is performed; a storing section that stores setting information in the first attribute information; and a rewriting section that rewrites the second attribute information to the first attribute inf

Abstract: There is provided a document management system including a document storage that stores an electronic document and a content identifier; a management information storage that stores management information, which includes a content identifier of an electronic document and a management identifier of a parent document of the electronic document, and a management identifier of the electronic document; an obtaining unit that obtains management information corresponding to a requested management identifier from the management information storage and obtains from the document storage a first electronic document corresponding to a content identifier in the obtained management information; and a print management unit that registers management information, of a medium document which is a printed result of the first electronic document, which includes a management identifier of the first electronic document and a management identifier of the medium document, and that writes the management identifier of the medium docume

Abstract: A document processing system includes a first acquisition section, a storage section, a second acquisition section and a data processor. The first acquisition section acquires a position specified by a user in an actual document. The storage section stores layout data of the document and content data of the document associated with the layout data. The second acquisition section acquires data in the specified position from the content data of the document stored in the storage section, based on the layout data stored in the storage section and the specified position. The data processor processes the data acquired by the second acquisition section.

Abstract: There is provided a document management server including a receiving unit that receives from a client a request and a first ID representing a document, an ID processing unit that issues, when an operation is performed on the document, a second ID, and records a derivation relationship having the second ID as a child of the first ID, a base node setting unit that sets a base node to indicate a division of a user among a node group in the derivation relationship, a document associating unit that associates related data of the document registered by an operation corresponding to a descendent node of a base node to the base node, and a document provider unit that provides, when receiving a user request for a digital document, detects a base node by tracing the derivation relationship from an ID accompanying the request to the root node, and provides the requested document based on related data associated to the detected base node.

Abstract: There is provided a document management server including a receiving unit that receives an access request and a first ID representing a document to be an object of the access request, an ID processing unit that issues, when an operation is performed on the document in response to the access request, a second ID corresponding to the operation, and records a derivation relationship having the second ID as a child of the first ID, an attribute recording unit that records attribute information relating to the operation by association with the first ID or the second ID, and a response data provider unit that provides, when the document is provided to the client in response to the access request, response data including attribute information associated with at least one ID appearing in a path from the received ID accompanying the access request to a root of a derivation relationship.