摘要:
In the key management software having a key database with a tree structure, a high-speed data encryption/decryption process is achieved by changing the tree structure without reducing the security strength when deleting or adding a key from/to the tree structure. The key management software 135 having the key database 146 with the tree structure, when deleting or adding a key from/to the tree structure, refers to the encryption strength comparison table 170 and the process time comparison table 180 to change the tree structure without reducing the security strength. This reduces the number of times an encrypted key is loaded onto the encryption/decryption processing device 134 during the data encryption/decryption process, thus achieving a high-speed data encryption/decryption.
摘要:
A method is provided for flexibly setting a shared counter shared by a plurality of security modules sharing a counter in tree structures, while curbing the amount of secure memory used. The shared counter is realized by a first counter group having a tree structure managed by a first secure module and a second counter group having a tree structure managed by a second secure module sharing a node in the tree structure of the first counter group and a node in the tree structure of the second counter group. The method of sharing using tree structures enables flexibly addition, deletion and access restriction setting of modules that use the shared counter.
摘要:
The present invention provides mobile terminals with various types of services such as electronic commerce service, music delivery service, and position information service. User applications required for the electronic commerce service, music delivery service, and position information service are respectively configured as service objects each having a server facility, and further a local gateway is provided, whereby various types of services can be used through a browser.
摘要:
A portable terminal includes a receiver, a barcode former configured to form barcodes and a display. The barcode former forms a barcode from the data received by the receiver and the display displays the formed barcode.
摘要:
The present invention provides mobile terminals with various types of services such as electronic commerce service, music delivery service, and position information service. User applications required for the electronic commerce service, music delivery service, and position information service are respectively configured as service objects each having a server facility, and further a local gateway is provided, whereby various types of services can be used through a browser.