Patent ID: 6446050
Filing Date: 2002-09-03
Classification: G06Q,H04L

Abstract:
A document circulation method of circulating a document having a plurality of data blocks, said circulation method comprising the steps of:encrypting a certain data block of a plurality of data blocks in a document relevant to a certain worker by using an encrypting key corresponding to said certain worker; encrypting another data block of said plurality of data blocks in said document relevant to another worker by using another encrypting key corresponding to said another worker; circulating said document having said certain data block encrypted by said encryption key and said another data block encrypted by said another encryption key over a network; receiving said document having encrypted certain data block and encrypted another data block by said certain worker from said network; decrypting said document by using a decrypting key corresponding to said certain worker; preparing a dialog to be defined by a user as to whether a data block not correctly decrypted is to be displayed on said document; and setting a display condition that said document is displayed after deleting said data block which cannot be decrypted, when said dialog is defined by the user not to display said data block not decrypted on said document.