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公开(公告)号：US20170279601A1
公开(公告)日：2017-09-28
申请号：US15512154
申请日：2015-09-17
Applicant: NEC Corporation
Inventor： Masato YAMANE , Yuki ASHINO , Masafumi WATANABE
CPC classification number: H04L9/003 , G06F21/56 , H04L9/08 , H04L9/0819 , H04L9/0822 , H04L9/14 , H04L41/0853 , H04L63/065
Abstract: An analysis system that is able to obtain correct encryption key is provided. The analysis system includes a processing circuitry configured to function as a cryptanalysis processing unit. The cryptanalysis processing unit includes: a key candidate extraction unit that is configured to extract, from second data, one or more candidates of key data that include an encryption key that enables to decrypt first data encrypted by a specific encryption scheme, based on data indicating a feature of the key data; and a decryption unit that is configured to extract, from the extracted candidates of key data, correct key data that enables to correctly decrypt the encrypted first data, based on a result of decrypting the first data by use of the extracted candidates of key data.
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公开(公告)号：US20240113957A1
公开(公告)日：2024-04-04
申请号：US18370946
申请日：2023-09-21
Applicant: NEC Corporation
Inventor： Yuki ASHINO , Takashi Hitani , Miyu Yakumanu
Abstract: An information processing device acquires a first position indicating a physical position of a first communication device, a second position indicating a physical position of a second communication device, and a plurality of third positions indicating physical positions set in a path connecting the first position and the second position; and searches for a physical path corresponding to a communication path of the first communication device and the second communication device based on the first position, the second position, and the plurality of third positions.
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公开(公告)号：US20240086334A1
公开(公告)日：2024-03-14
申请号：US17768101
申请日：2020-11-05
Applicant: NEC Corporation
Inventor： Yuki ASHINO , Kazushi SUGYO
CPC classification number: G06F12/14 , H04L69/04 , G06F2212/1052 , G06F2212/154
Abstract: In order to record communication data via a communication network, in a storage apparatus in accordance with an appropriate data recording method, a data processing apparatus includes: an obtaining unit configured to obtain communication data including one or more packets continuously communicated via a communication network; a recording unit configured to record the communication data in a storage; and a reading processing unit configured to read the communication data from the storage, wherein the recording unit selects a first data compression method from among a plurality of data compression methods based on compression rate for each data compression method, reading speed of the communication data from the storage, and decompression speed of the communication data required from reading of the communication data to decompression of the communication data in accordance with each compression method, and records the communication data in accordance with the first data compression method.
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公开(公告)号：US20230396526A1
公开(公告)日：2023-12-07
申请号：US18202089
申请日：2023-05-25
Applicant: NEC Corporation
Inventor： Yuki ASHINO , Masahiro Karube , Takashi Hitani
IPC: H04L43/0864
CPC classification number: H04L43/0864
Abstract: An information processing device acquires a measured value of a response time for each of combinations of two target devices of at least three target devices that are communicatively connected to each other, with one of the two devices operating as a first communication device and the other one of the two devices operating as a second communication device. The measured value of the response time is a measured value of a time from start of transmission process of a first communication packet to reception of a second communication packet. The first communication packet is a packet sent from the first communication device to the second communication device. The second communication packet is a packet sent from the second communication device to the first communication device in response to reception of the first communication packet by the second communication device.
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Patent Agency Ranking
公开(公告)号：US20220318382A1
公开(公告)日：2022-10-06
申请号：US17667783
申请日：2022-02-09
Applicant: NEC Corporation
Inventor： Masafumi WATANABE , Yuki ASHINO
IPC: G06F21/56 , G06F16/2455 , G06F21/55
Abstract: Provided is an analysis device with which it is possible to find information relating to the intention and purpose of an attacker. The analysis device is provided with a purpose estimating means that estimates the purpose of behavior, based on predetermined behavior in the computer and knowledge information that includes the relation between the behavior and the purpose of executing the behavior.
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公开(公告)号：US20210126933A1
公开(公告)日：2021-04-29
申请号：US17254491
申请日：2019-06-05
Applicant: NEC Corporation
Inventor： Yuki ASHINO , Ayaka SAMEJIMA
Abstract: The present invention includes an acquisition unit (110) that acquires, for communication observed by a sensor apparatus on a network, communication information including behavior information indicating behavior of the communication and transmission source information indicating a transmission source of the communication, a classification unit (120) that classifies the acquired communication information, based on the behavior information, and an output unit (130) that outputs a classification result of the communication information based on the behavior information, together with the transmission source information.
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27.发明申请公开(公告)号：US20190236270A1
公开(公告)日：2019-08-01
申请号：US16312354
申请日：2017-06-21
Applicant: NEC CORPORATION
Inventor： Masato YAMANE , Yuki ASHINO
CPC classification number: G06F21/55 , G06F9/45533 , H04L9/14 , H04L63/0428 , H04L63/1408 , H04L63/1433
Abstract: Provided is a process control device, etc. capable of more reliably maintaining the soundness of an information processing system with regard to cybersecurity. A processing control device calculates a sum of a value indicating a risk included in processing information that includes one or more processing executed on an information processing apparatus during a certain period; and restricts processing to the information processing apparatus when the calculated sum value for the processing information satisfies a predetermined restriction condition.
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公开(公告)号：US20170270297A1
公开(公告)日：2017-09-21
申请号：US15505498
申请日：2014-08-22
Applicant: NEC Corporation
Inventor： Masafumi WATANABE , Yuki ASHINO
CPC classification number: G06F21/56 , G06F21/552 , G06F21/566 , H04L63/1408 , H04L63/1416
Abstract: Provided is an analysis device with which it is possible to find information relating to the intention and purpose of an attacker. The analysis device is provided with a purpose estimating means that estimates the purpose of behavior, based on predetermined behavior in the computer and knowledge information that includes the relation between the behavior and the purpose of executing the behavior.
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29.发明申请公开(公告)号：US20170147817A1
公开(公告)日：2017-05-25
申请号：US15319431
申请日：2015-06-24
Applicant: NEC Corporation
Inventor： Masato YAMANE , Yuki ASHINO , Yoichiro MORITA , Masafumi WATANABE
CPC classification number: G06F21/562 , G06F11/3037 , G06F11/34 , G06F2221/034
Abstract: Provided is an analysis apparatus including a first storage device configured to store data, and a processing circuitry that is configured to control the own apparatus to function as: a dispatcher that is communicably connected to an analysis target device that performs operational processing by use of a processor and a memory unit, and generates collection target data for reproducing at least part of a state of the operational processing in the analysis target device, in accordance with data being transmitted and received between the processor and the memory unit; a data mapper that assigns, to one or more areas included in the collection target data, tag information for identifying the area; and a data writer that saves the one or more areas into the first storage device in accordance with a first policy defining a procedure of saving the collection target data into the first storage device.
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