METHOD, APPARATUS, PROGRAM FOR TRANSMITTING AND RELAYING ANONYMOUS DATA

PROBLEM TO BE SOLVED: To enable hiding the distance to a transmitter or a receiver. SOLUTION: In a transmission node 1, each node included in an anonymous route is correlated to a block by a storing block determining means 1b. Route information for each node is generated for each node by a node classification route information generating means 1c, the generated information is encrypted by an encrypting means 1d, and the information is set at a block by a node classification route information setting means 1e. Further, the position of a packet corresponding to the adjacent node is set at a packet by a block designating means 1f, and the packet is transmitted by a packet transmission means 1g. Then, the node classification route information is decrypted of the designated block by a decrypting means 2a of the relay node 2, and the node of transfer destination is determined by a transfer destination determining means 2b. Further, the block designation is changed by a block designation changing means 2c. Then, the packet is transmitted by a packet transmitting means 2d. COPYRIGHT: (C)2005,JPO&NCIPI