Kddi Corporation

Telcordia Technologies, Inc.

Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Sri International

Keio University

Kdd R&d Laboratories, Inc.

Yutaka Miyake

Akira Yamada

Abhrajit Ghosh

Ravichander Vaidyanathan

Osamu Sato

Kenji Oki

Keisuke Takemori

Ayumu Kubota

Grit Denker

Teruhide Yamanishi

Ryuji Tsuchiya

Yuu-Heng Alice Cheng

Aditya Naidu

Shinsaku Kiyomoto

Yukiko Sawaya

Shin Nabeya

Toshiaki Tanaka

Masatoshi Fukamachi

Takamasa Isohara

Iwao Sasase

Yuto Nakano

Jonathan Millen

A non-linear processor, which subjects an input value from a feedback shift register storing an internal state of a stream cipher to non-linear processing to output a key stream, is connected to internal registers, which store output values from a non-linear substitution circuit which subjects the input value to non-linear substitution processing. The non-linear processor is provided with an exclusive-OR unit, which is at an input end of each of the internal registers and carries out an operation of a random number generated from part of values stored in the feedback shift register and the output value of the non-linear substitution circuit to mask the output value of the non-linear substitution circuit, and another exclusive-OR unit, which is provided at an output end of the internal register and performs an operation to unmask the value stored in the internal register.

Non-linear processor, stream-cipher encrypting device, stream-cipher decrypting device, mask processing method, stream-cipher encrypting method, stream-cipher decrypting method, and program

A method, an apparatus and a program for detecting spoofed Internet Protocol (IP) traffic directed to a network having a plurality of autonomous systems (AS) is provided. The method comprises receiving an incoming packet through an AS, the incoming packet containing a source IP address and a destination IP address, acquiring a corresponding source and destination IP address prefixes, converting the corresponding source and destination IP address prefixes into a source AS number and a destination AS number, determining if the incoming packet arrived from an unexpected source based upon the corresponding destination IP address prefix and the converted source and destination AS number using an unexpected pair tuple table generated from network routing information and generating an alert indicating that the incoming packet is not allowed to enter the network.

Method, apparatus and program for detecting spoofed network traffic

A method and apparatus for detecting spoofed IP network traffic is presented. A mapping table is created to indicate correlations between IP address prefixes and AS numbers, based on routing information collected from a plurality of data sources. At each interface of a target network, IP address prefixes from a training traffic flow are acquired and further converted into AS numbers based on the mapping table. An EAS (Expected Autonomous System) table is populated by the AS numbers collected for each interface. The EAS table is used to determine if an operation traffic flow is allowed to enter the network.

Method and apparatus for detecting spoofed network traffic

A water pump attachment structure of a water-cooled internal combustion engine is provided to facilitate the maintenance of a valve train. A water pump attachment structure of a water-cooled internal combustion engine includes a semicircular cut-away surface of a water pump holder opposed to a semicircular surface of a cylinder head to form a water pump support circular hole. Screw members are passed through respective screw through-holes of the cylinder head and threadedly engaged with internal thread holes of the water pump holder. Thus, the water pump holder is fastened to the cylinder head. A water pump is fitted into and secured to the water pump support circular hole. A cylinder head cover is attached to the cylinder head by allowing their mating surfaces to conform with each other with the water pump holder liquid-tightly sandwiched therebetween.

Water pump attachment structure of water-cooled internal combustion engine

A communication system and a security assurance device are proposed, which are capable of assuring that a target party for communication is implementing security countermeasures. A servertransmits informationnecessary for AC issuance to a security assurance authority. The security assurance authorityverifies the security of the serverduring communication based upon this information necessary for AC issuance. And, when the security of the serverduring communication is confirmed, the security assurance authorityissues an ACwhich proves the security of the serverduring communication, and transmits it to the server. Upon receipt of this AC, the servertransmits the ACto a client, according to a connection request from the client. And, upon receipt of this AC, the clientverifies the security during communication of the server, based upon the AC

Communication system and security assurance device

The present invention provides systems and methods of cross-domain access control in which a client node () sends a request () for a resource to a resource server (). In response, a local proxy server () automatically obtains a ticket having a revocation status () and forwards the ticket () to an authorization server () that communicates with the resource server () regarding access.

Cross-domain access control

To reliably prevent the occurrence of a pull out phenomenon in a magnetic driving pump of a vehicle internal combustion engine where permanent magnets, magnetized to have alternate N poles and S poles around an axis of a drive shaft and a driven shaft, are respectively fixed to the drive shaft and the driven shaft. The drive shaft is interlocked with a crankshaft and the driven shaft is coaxially mounted with the drive shaft. Furthermore, the permanent magnets are magnetized to have alternate N poles and S poles 90 degrees or 180 degrees in phase in a peripheral direction.

Magnetic driving pump of vehicle internal combustion engine

Growing community of inventors

Saitama, Japan

Yutaka Miyake