DOCUMENT DATA MANAGEMENT DEVICE, AND PROGRAM

PROBLEM TO BE SOLVED: To provide a document data management device in which information security of document data is secured, and besides browsing of document data can be performed.SOLUTION: A document data management device according to the present invention has means for: previously collecting document data as a target of a browsing request from a server device such as a document file server; dividing document data by the document constituent element of a document; endowing each document constituent element with a hash value so as to hold it; extracting, in response to a browsing request from a document browsing client as an information terminal, only a document constituent element in response to the request; and transmitting it to the document browsing client.