| 摘要 |
PROBLEM TO BE SOLVED: To reduce processing amount and processing time which are necessary for scrambling processing and restore processing by dividing data into plural data units being a packet size, giving a false packet identifier which indicates scrambled packet order, assembling a packet and executing transmission to a network by means of the packet order which is scrambled based on the false packet identifier. SOLUTION: Whole data is scrambled and divided into a proper packet size in packet transmission with scrambling (P1(S1)). A false packet identifying number pfx is directly calculated from the memory address of division data in the respective packets so as to be given to the respective packets and, while executing this, the packet is assembled. (P2(S2) and S3). In the meantime, in packet reception while executing restoration, the packet is received while directly calculating the memory address of division data from the false packet identifying number pfx(D1). Then, whole original data is re-constituted based on the memory address of division data (R1(D2)). |
