| 摘要 |
<P>PROBLEM TO BE SOLVED: To transfer an electronic right while protecting the anonymity of a transfer source user and a transfer destination user. <P>SOLUTION: A right transfer processor 10 forms right transfer information, generates a distributed information group in which the right transfer information is partially restorable from a combination of specified distributed information I and II, and the right transfer information is entirely restorable from all distributed information I, II and III, and distributes and transmits the distributed information I and II to a right transfer processor 20 and the distributed information II to a right transfer management device 30. The right transfer processor 20 partially restores the right transfer information from the distributed information I and II to confirm the content thereof, and then transmits the distributed information I and II to the device 30. The right transfer management device 30 entirely restores the right transfer information from the distributed information I, II and III to verify the transfer of the electronic right, and executes the transfer processing of the electronic right. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
