Hajime Watanabe

According to our database, Hajime Watanabe authored at least 28 papers between 1997 and 2018.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2018

Attribute-Based Encryption for Range Attributes.

Nuttapong Attrapadung, Goichiro Hanaoka, Kazuto Ogawa, Go Ohtake, Hajime Watanabe, Shota Yamada

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018

Hate Speech on Twitter: A Pragmatic Approach to Collect Hateful and Offensive Expressions and Perform Hate Speech Detection.

Hajime Watanabe, Mondher Bouazizi, Tomoaki Ohtsuki

IEEE Access, 2018

2017

Mutual Authentication Protocol for HTTP: Cryptographic Algorithms Based on the Key Agreement Mechanism 3 (KAM3).

Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi, Kaoru Maeda, Tatsuya Hayashi, Yuichi Ioku

RFC, April, 2017

Mutual Authentication Protocol for HTTP.

Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi, Kaoru Maeda, Tatsuya Hayashi, Yuichi Ioku

RFC, April, 2017

HTTP Authentication Extensions for Interactive Clients.

Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi, Kaoru Maeda, Tatsuya Hayashi, Yuichi Ioku

RFC, January, 2017

2016

Localization Attacks Using Matrix and Tensor Factorization.

Takao Murakami, Hajime Watanabe

IEEE Trans. Inf. Forensics Secur., 2016

2014

Vulnerability of the conventional accessible CAPTCHA used by the White House and an alternative approach for visually impaired people.

Michitomo Yamaguchi, Toru Nakata, Hajime Watanabe, Takeshi Okamoto, Hiroaki Kikuchi

Proceedings of the 2014 IEEE International Conference on Systems, Man, and Cybernetics, 2014

Location prediction attacks using tensor factorization and optimal defenses.

Takao Murakami, Hajime Watanabe

Proceedings of the 2014 IEEE International Conference on Big Data (IEEE BigData 2014), 2014

2013

Partially Wildcarded Attribute-based Encryption and Its Efficient Construction.

Go Ohtake, Yuki Hironaka, Kenjiro Kai, Yosuke Endo, Goichiro Hanaoka, Hajime Watanabe, Shota Yamada, Kohei Kasamatsu, Takashi Yamakawa, Hideki Imai

Proceedings of the SECRYPT 2013, 2013

2011

Secure Broadcast System with Simultaneous Individual Messaging.

Arisa Fujii, Go Ohtake, Goichiro Hanaoka, Nuttapong Attrapadung, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011

On advanced cryptographic techniques for information security of smart grid AMI.

Miodrag J. Mihaljevic, Hideki Imai, Michael W. David, Kazukuni Kobara, Hajime Watanabe

Proceedings of the 7th Cyber Security and Information Intelligence Research Workshop, 2011

2010

A low complexity authentication protocol based on pseudorandomness, randomness and homophonic coding.

Miodrag J. Mihaljevic, Hajime Watanabe, Hideki Imai

Proceedings of the International Symposium on Information Theory and its Applications, 2010

2009

An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation.

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Hideki Imai, Takashi Kitagawa, Kazuto Ogawa, Hajime Watanabe

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

An improvement of discrete Tardos fingerprinting codes.

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

Des. Codes Cryptogr., 2009

PAKE-based mutual HTTP authentication for preventing phishing attacks

Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi

CoRR, 2009

PAKE-based mutual HTTP authentication for preventing phishing attacks.

Yutaka Oiwa, Hiromitsu Takagi, Hajime Watanabe, Hirofumi Suzuki

Proceedings of the 18th International Conference on World Wide Web, 2009

2008

Chosen Ciphertext Secure Public Key Encryption with a Simple Structure.

Goichiro Hanaoka, Hideki Imai, Kazuto Ogawa, Hajime Watanabe

Proceedings of the Advances in Information and Computer Security, 2008

2007

Optimization of Tardos's Fingerprinting Codes in a Viewpoint of Memory Amount.

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai

Proceedings of the Information Hiding, 9th International Workshop, 2007

A New Variant for an Attack Against RSA Signature Verification Using Parameter Field.

Yutaka Oiwa, Kazukuni Kobara, Hajime Watanabe

Proceedings of the Public Key Infrastructure, 2007

A Tracing Algorithm for Short 2-Secure Probabilistic Fingerprinting Codes Strongly Protecting Innocent Users.

Satoshi Fujitsu, Koji Nuida, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

Proceedings of the 4th IEEE Consumer Communications and Networking Conference, 2007

An Improvement of Tardos's Collusion-Secure Fingerprinting Codes with Very Short Lengths.

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai

Proceedings of the Applied Algebra, 2007

2006

Optimal probabilistic fingerprinting codes using optimal finite random variables related to numerical quadrature

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai

CoRR, 2006

Generic Transforms to Acquire CCA-Security for Identity Based Encryption: The Cases of FOpkc and REACT.

Takashi Kitagawa, Peng Yang, Goichiro Hanaoka, Rui Zhang, Hajime Watanabe, Kanta Matsuura, Hideki Imai

Proceedings of the Information Security and Privacy, 11th Australasian Conference, 2006

Unconditionally Secure Chaffing-and-Winnowing: A Relationship Between Encryption and Authentication.

Goichiro Hanaoka, Yumiko Hanaoka, Manabu Hagiwara, Hajime Watanabe, Hideki Imai

Proceedings of the Applied Algebra, 2006

2003

A Random-Error-Resilient Collusion-Secure Fingerprinting Code, Randomized <i>c</i>-Secure CRT Code.

Hajime Watanabe, Takashi Kitagawa

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003

2002

Watermarking method for extracting embedded data without original image.

Madoka Hasegawa, Hajime Watanabe, Takashi Yamada, Shigeo Kato

Proceedings of the Visual Communications and Image Processing 2002, 2002

An ID Coding Scheme for Fingerprinting, Randomized c-Secure CRT Code.

Hajime Watanabe, Takashi Kitagawa

Proceedings of the Information and Communications Security, 4th International Conference, 2002

1997

A secure code for recipient watermarking against conspiracy attacks by all users.

Hajime Watanabe, Tadao Kasami

Proceedings of the Information and Communication Security, First International Conference, 1997