Nec Corporation

Shigeyoshi Shima

Daichi Hasumi

Satoshi Ikeda

Hiroshi Kitamura

Yukiko Endo

The communication terminal detect a functional module of anomalous operating state, and to notify the edge server of the anomalous operating state. The edge server generates respective disk images corresponding to the functional module and a related functional module, generates a plurality of divided disk images obtained by dividing the generated disk image, and sends the plurality of divided disk images to the storage device. The storage device stores the divided disk images, and sends divided disk images corresponding to the functional module and the related functional module to the communication terminal in response to request from the communication terminal. The communication terminal generates the disk image by coupling the plurality of divided disk images acquired from the storage device, and turns on the functional module and the related functional module based on the generated disk image.

Turn on functional module and related functional module based on generated disk image

Provided is a communication information integration systemin which a communication information integration apparatusclassifies collected first communication information for each terminal apparatus, generates summary information summarizing the classified communication information corresponding to the terminal, and transmits the generated summary information to the corresponding terminal apparatus, the terminal apparatus, upon receiving the summary information, extracts a difference between the first communication information and second communication information collected by the terminal apparatus, using the second communication information and the summary information, generates difference communication information based on the extracted difference, and transmits the generated difference communication information to the communication information integration apparatus, and the communication information integration apparatus, upon receiving the difference communication information from the terminal apparatus, integrates the difference communication information into the first communication information.

Communication information integration system, communication information integration method, communication information integration apparatus, terminal apparatus, and computer readable recording medium

Provided is an incident effect range estimation device which estimates the range of the effect of an incident and shortens incident handling time. This incident effect range estimation device is provided with an incident origin log acquisition unit which acquires log information for the incident-originating device which is related to the occurrence of the incident, a communication destination log acquisition unit which acquires, on the basis of the log information for the incident-originating device, log information for a communication destination device which is the communication destination of the incident-originating device, and an effect range estimation unit which estimates the range of the effect of the incident on the basis of the communication destination device. The range of the effect of the incident can thereby be estimated automatically, and thus incident handling time can be shortened significantly.

Incident effect range estimation device, incident effect range estimation method, storage medium, and system

Provided is a communication system capable of fundamentally preventing an attack from an unspecified counterpart and resolve problem even when a problem occurs in a user terminal or client and a server. A mediation server () receives an attack from an outside source on behalf of a server () (server A), redirects and receives communication addressed to a node-representative ID, and performs first authentication for the communication. In the case of a reliable user terminal or client () (client B), the mediation server () provides the device with an intermediary server ID specifying an intermediary server (). The intermediary server () performs second authentication for the user terminal or client () (client B) going through the mediation server (). When it is identified that the user terminal or client () (client B) is reliable, the intermediary server () asks the server () (server A) about an ID and provides the user terminal or client () (client B) with traceable ID information acquired from the server () (server A).

Communication system, reliable communication mechanism, and communication method used for the same

A management server calculates a hash value of software for providing a service, generates a first software area from software which is provided a second electronic signature, provides a third electronic signature to user information provided with a first electronic signature transmitted from a terminal, to the hash value, and to user management information, encrypts a second software area generated from the third electronic signature, user information, from hash value, and from user management information using a common key of the management server and service providing server, combines the first software area and encrypted second software area to create a software IC card, encrypts the software IC card using a public key of the terminal, and transmits the encrypted software IC card to the terminal.

Software IC card system, management server, terminal, service providing server, service providing method, and program

An electronic data transmission and reception system has n apparatus, a transmitting apparatus, and a receiving apparatus which are connected to a network. The transmitting apparatus transmits first electronic data to a first apparatus. The receiving apparatus receives (n+1)th electronic data from a nth apparatus. A jth (j is an integer satisfying 1&#x2266;j&#x2266;n) apparatus generates (j+1)th electronic data which comprise jth electronic data with a signature assigned thereto for identifying the jth apparatus, and transmits the (j+1) electronic data to a (j+1)th apparatus. When j is n, an (n+1)th apparatus corresponds to the receiving apparatus. The electronic data transmission and reception system guarantees the first electronic data transmitted by the transmitting apparatus until the first electronic data are received by the receiving apparatus, because of signatures that are generated until the (j+1) electronic data are generated.

Growing community of inventors

Tokyo, Japan

Shigeyoshi Shima