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Tokyo Denki University, Japan

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29 Papers

Implementation of Secondary Available Digital Content Protection Schemes using Identity-based Signatures

Topic: Content Protection and Digital Rights Management

Authors: Nozomi Nagashima ¹ , Masaki Inamura ² and Keiichi Iwamura ¹

Affiliations: ¹ Graduate School of Engineering, Tokyo University of Science, Tokyo, Japan , ² Center for Research and Collaboration, Tokyo Denki University, Tokyo, Japan

Digital Object Identifier: 10.5220/0010245504850491

Proceedings of ICISSP 2021, ISBN: 978-989-758-491-6

Quick Abstract

User generated content (UGC) is widespread, wherein general consumers utilize the Internet to generate content files. Using this service, content files can be easily created and uploaded. However, copyright is often not protected on the Internet. An activity known as a creative commons license enables authors to manage the secondary use of original content files. However, this license cannot prevent malicious editors from using the original files. Therefore, we propose technical protection measures using the creative commons license and identity-based signature, wherein authors apply identity-based signatures to content files that need to be protected. By verifying the signature, malicious edits performed on the files can be detected. We investigated the processing speed required for this via simulation and used the 3DCG movie editing tool "Miku Miku Dance" as the content files.

A Content Protection Method That Allows Commissioning of Editing Control Processing to a Third Party using a Proxy Signature

Topics: Web Services; Entertainment; Trust/Security/Protection

Authors: Tomohiro Kobayashi ¹ , Keiichi Iwamura ¹ and Masaki Inamura ²

Affiliations: ¹ Graduate School of Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushikaku, Tokyo, 125-8585, Japan , ² Graduate School of Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushikaku, Tokyo, 125-8585, Japan, Center for Research and Collaboration, Tokyo Denki University, 5 Senju-Asahi-cho, Adachi-ku, Tokyo, 120-8551, Japan

Digital Object Identifier: 10.5220/0009871800980109

Proceedings of ICE-B 2020, ISBN: 978-989-758-447-3

Quick Abstract

In consumer-generated media (CGM), it is important to promote secure content circulation. Content circulation includes the editing of content, and it is desirable for content to become more abundant and varied. For copyright protection suitable for CGM, a technology (K. Koga et al., 2015, T. Fujimoto et al., 2016) has been proposed that controls editing using digital signatures. We propose a method in which the author can securely provide individual editing permissions for content that has been editing-prohibited. this method offers a way to securely buy and sell the right to edit content in exchange for money. Therefore, this method is applicable to commercial content circulation. It is possible to promote content circulation while protecting the rights of the author by using the proposed method, even in scenarios where content circulation is stagnant with conventional methods.

Novel Fabrication Method of Minute Cylindrical Structures Such as Stents using Lithography, Etching, and Chemical Polishing

Topics: Biomechanical Devices; Biomedical Equipment & Instrumentation

Authors: Toshiyuki Horiuchi , Kaiki Ito , Jun-ya Iwasaki and Hiroshi Kobayashi

Affiliation: Tokyo Denki University, 5 Senju-Asahi-cho, Adachi-ku, Tokyo, Japan

Digital Object Identifier: 10.5220/0008997201690175

Proceedings of BIODEVICES 2020, ISBN: 978-989-758-398-8

Quick Abstract

Applicability of characteristic subtractive processes of stainless-steel pipes to fabrication of minute structures such as stents was demonstrated. Pipes with an outer diameter of 2 mm, a thickness of 50 µm, and a length of 50 mm were coated with a resist PMER N-CA3000 PM in approximately 10 µm thick in 20 mm area at the tip parts of pipes. Next, stent-like mesh patterns composed of 30 rhombuses on an ordinary flat film reticle were replicated on a pipe using a rotary scan-projection exposure system, in which patterns were precisely and homogeneously replicated by synchronously scanning the reticle linearly in perpendicular to the pipe axis and rotating the pipe at a constant speed. All the patterns on the reticle were continuously replicated during the pipe was rotated 360º. After printing the stent-like mesh patterns, the pipes were processed in two steps. In the first step, they were wetly etched in FeCl3 aqueous solution, and in the second step, they were chemically polished in a chemical compound on the market. As a result, a stent-like meshed pipe with mesh widths of 83±6 µm was precisely fabricated.

Secure Comparison and Interval Test Protocols based on Three-party MPC

Topics: Security Frameworks, Architectures and Protocols; Cryptographic Algorithms; Security and Privacy in Cloud and Pervasive Computing

Authors: Wataru Fujii ¹ , Keiichi Iwamura ¹ and Masaki Inamura ^{2

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Affiliations: ¹ Graduate School of Engineering, Tokyo University of Science, Tokyo, Japan , ² Center for Research and Collaboration, Tokyo Denki University, Tokyo, Japan

Digital Object Identifier: 10.5220/0009161406980704

Proceedings of ICISSP 2020, ISBN: 978-989-758-399-5

Quick Abstract

Multiparty Computation (MPC) is a technology that enables computations to be performed without exposing private data. Three main approaches are employed to construct an MPC: secret-sharing schemes, homomorphic encryption, and garbled circuit. Although secret-sharing based MPC involves lower communication cost generally, it requires more round communications for concrete protocols such as comparisons or interval tests. Herein, we propose a five-round secure comparison protocol and a five-round interval test protocol using a shuffling protocol based on a three-party secret-sharing scheme. Additionally, we compare our protocols with existing protocols based on rounds and multiplications.

An Order-specified Aggregate Authority-transfer Signature

Topic: Cryptographic Algorithms

Authors: Takuya Ezure and Masaki Inamura

Affiliation: Graduate School of Science and Engineering, Tokyo Denki University, Saitama and Japan

Digital Object Identifier: 10.5220/0007359103090318

Proceedings of ICISSP 2019, ISBN: 978-989-758-359-9

Quick Abstract

We propose an order-specified aggregate authority-transfer signature based on the gap Diffie-Hellman group. In various organizations, to reduce the number of approvals required by someone who has relevant authority, the authority for a task can be transferred to a subordinate or another person who executes the task. Currently, authority is commonly transferred via a document, such as an authority-transfer agreement. However, to speed up the process and maintain the integrity of the evidence, we believe that it is better to transfer such authority via a computer network. In this paper, we propose an authority-transfer signature scheme using an order-specified aggregate signature and a group signature, and we propose a new authority-transfer system. In the signature method, a group signature scheme is used to express authority. Moreover, it transfers the authority owned by the manager to another member of the group. The difference from the group manager of the group signature is that this manager not only manages the group but also delegates authority. With the order-specified aggregate signature, it is possible to handle multiple signatures efficiently while verifying the order. We show that a safe and efficient authority-transfer system can be constructed using this new digital signature.

Content Protection Method to Control Editing by Billing

Topics: Web Services; Entertainment; Business Process Management; Trust/Security/Protection; Services Computing Platforms; Innovation/Migration/Change Management ; Internet of Things/Sensing Enterprise

Authors: Tomohiro Kobayashi ¹ , Keiichi Iwamura ¹ and Masaki Inamura ²

Affiliations: ¹ Faculty of Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585 and Japan , ² Center for Research and Collaboration, Tokyo Denki University, 5 Senju-Asahi-cho, Adachi-ku, Tokyo, 120-8551 and Japan

Digital Object Identifier: 10.5220/0007959701960208

Proceedings of ICE-B 2019, ISBN: 978-989-758-378-0

Quick Abstract

In consumer-generated media (CGM), where consumers themselves generate and transmit content, it is important to promote secure content circulation. Content circulation includes the editing of content, and it is desirable for content to become more abundant and varied. For copyright protection suitable for CGM, a technology (Katsuma et al., 2015, Tatsuya et al., 2016) has been proposed that controls editing using digital signatures, and guarantees the copyright of the original content even for secondary use. However, in those scheme, the content that the author has declared as editing-prohibited once is always kept as editing-prohibited thereafter, and the circulation of the content is stagnant from then onwards. Therefore, we propose a method in which the author can securely provide individual editing permissions for content that has been sent as editing-prohibited. Specifically, when an author wants to transmit content as editing-prohibited, and then an editor wants to view it and purchase the right to edit the content, this method offers a way to securely buy and sell the right to edit content in exchange for money. Therefore, this method is applicable to commercial content circulation. It is possible to promote content circulation while protecting the rights of the author by using the proposed method, even in scenarios where content circulation is stagnant with conventional methods.

Related Ontology Subjects/Areas/Topics (24)

Applications	Enterprise Information Systems	Software Agents and Internet Computing
Artificial Intelligence	Entertainment	Software Engineering
Business Process Management	Knowledge Management and Information Sharing	Software Engineering Methods and Techniques
Cloud Computing	Knowledge-Based Systems	Symbolic Systems
Collaboration and e-Services	Mobile Software and Services	Technology Platforms
Data Engineering	Ontologies and the Semantic Web	Telecommunications
e-Business	Services Computing Platforms	Web Services
Enterprise Engineering	Services Science	Wireless Information Networks and Systems

Deployment of Contents Protection Scheme using Digital Signature

Topics: Business-It Alignment; Entertainment; Green Computing for E-Commerce; Demonstrators and Applications

Authors: Daichi Tanaka ¹ , Keiichi Iwamura ¹ , Masaki Inamura ² and Kitahiro Kaneda ³

Affiliations: ¹ Tokyo University of Science, Japan , ² Tokyo Denki University, Japan , ³ Osaka Prefecture University, Japan

Digital Object Identifier: 10.5220/0006472501300137

Proceedings of ICE-B 2017/ICETE, ISBN: 978-989-758-257-8

Quick Abstract

With the recent progress in social media and Internet technology, it is easy for consumers to edit contents uploaded on the network and create new contents. In this situation, copyright protection related to the secondary use of uploaded content is important. In our previous works, three schemes were proposed for controlling the secondary use of content according to the author's intentions by using digital signatures. Using these schemes, an author can control the changes, deletions, additions, and diversions in each portion of his/her contents, as well as the composition of the contents. The objective of this study was to verify the practicality of this technology by mounting it. Thus, we applied this technology to contents created using "MikuMikuDance," a contents editing tool for 3D CG movies, and mounted a contents protection system. We show the manner in which this system was mounted, and describe the evaluation of the processing speed in a simulation environment.

Related Ontology Subjects/Areas/Topics (9)

Applications	e-Business	Entertainment
Business-It Alignment	Enterprise Engineering	Logistics
Demonstrators and Applications	Enterprise Information Systems	Sustainable e-Business

Content Protection Scheme to Realize Edit Control Including Diversion Control and Composition Control

Topics: Web Services; Collaborative Systems

Authors: Tatsuya Fujimoto ¹ , Keiichi Iwamura ¹ and Masaki Inamura ²

Affiliations: ¹ Tokyo University of Science, Japan , ² Tokyo Denki University, Japan

Digital Object Identifier: 10.5220/0005994501160123

Proceedings of ICE-B 2016/ICETE, ISBN: 978-989-758-196-0

Quick Abstract

We have proposed a copyright protection technology suitable for editable contents, which can control the change, deletion, and addition of partial contents. In this paper, we propose a new scheme that can control the diversion of partial contents to other contents and composition of contents, in addition to control of the change, deletion, and addition of partial contents using digital signatures based on the author’s intention. This scheme realizes edit control between two or more contents, and is effective with Internet contents such as consumer generated media represented by YouTube. We also evaluate the security of our proposed scheme against various attacks.

Related Ontology Subjects/Areas/Topics (17)

Cloud Computing	Enterprise Information Systems	Software Engineering
Collaboration and e-Services	Mobile Software and Services	Software Engineering Methods and Techniques
Collaborative Systems	Ontologies and the Semantic Web	Telecommunications
Complex Systems Modeling and Simulation	Services Science	Web Services
Data Engineering	Simulation and Modeling	Wireless Information Networks and Systems
e-Business	Software Agents and Internet Computing

Evaluation of Handwriting Characteristic for Two-factor Authentication Interface on Touch-pad Panel

Topics: Mobile User Interfaces; Trust/Security/Protection

Authors: Moe Sasaki and Masaki Inamura

Affiliation: Graduate School of Tokyo Denki University, Japan

Digital Object Identifier: 10.5220/0005992501060111

Proceedings of ICE-B 2016/ICETE, ISBN: 978-989-758-196-0

Quick Abstract

Frequencies of user authentication increase and spread of smartphone and tablet advances rapidly in recent years. However, it is a great challenge that password authentication is easy to be attacked and must be solved. We assume authentication, which use touch panel and handwriting as an authentication element in this paper. As far as we know, there have few papers about generating a digital data from handwriting. Therefore, our contribution of this paper is to define handwriting characteristics of a letter that can convert into a digital data and evaluate possibility of the conversion.

In Situ Observation of Diffusion Mixing in a Micro-fluidic Mixer

Topics: Biomedical Instrumentation; MEMS; Imaging and Visualization Devices; Lab on a Chip and Microfluidic Devices

Authors: Yuta Morizane and Toshiyuki Horiuchi

Affiliation: Tokyo Denki University, Japan

Digital Object Identifier: 10.5220/0005757902090215

Proceedings of BIODEVICES 2016/BIOSTEC, ISBN: 978-989-758-170-0

Quick Abstract

Mixing of laminar two-liquid flows in micro-mixers was visualized and analyzed by mixing alkaline solution and phenolphthalein. Micro-mixers with flow paths fabricated by optical projection lithography were used. The two liquids were injected using a syringe pump from Y-shape inlets, and states of mixing were observed using an optical microscope with a high-resolution digital camera. By using above mentioned two liquids, transparent liquids were colored in red when they were mixed. For this season, the mixing was clearly visualized. Because Reynolds number of the flow was so small as 0.27-17.7, the flow became the laminar one. Accordingly, two liquids were not mixed near the junction where they were joined together. However, they were gradually mixed by diffusion during they flowed in the mixer paths. It was clarified that the mixing ratio varied depending on the flow-path shape, flow rate, and flow-path width.

Related Ontology Subjects/Areas/Topics (7)

Biomedical Engineering	Hardware	MEMS
Biomedical Instrumentation	Imaging and Visualization Devices	Sensor Networks
Biomedical Instruments and Devices

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