Hajime Watanabe

Arisa Fujii, Go Ohtake, Goichiro Hanaoka, Nuttapong Attrapadung, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: Secure Broadcast System with Simultaneous Individual Messaging. IEICE Transactions 94-A(6): 1328-1337 (2011)

Miodrag J. Mihaljevic, Hideki Imai, Michael David, Kazukuni Kobara, Hajime Watanabe: On advanced cryptographic techniques for information security of smart grid AMI. CSIIRW 2011: 64

Miodrag J. Mihaljevic, Hajime Watanabe, Hideki Imai: A low complexity authentication protocol based on pseudorandomness, randomness and homophonic coding. ISITA 2010: 690-695

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: An improvement of discrete Tardos fingerprinting codes. Des. Codes Cryptography 52(3): 339-362 (2009)

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Hideki Imai, Takashi Kitagawa, Kazuto Ogawa, Hajime Watanabe: An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation. IEICE Transactions 92-A(1): 197-206 (2009)

Yutaka Oiwa, Hiromitsu Takagi, Hajime Watanabe, Hirofumi Suzuki: PAKE-based mutual HTTP authentication for preventing phishing attacks. WWW 2009: 1143-1144

Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi: PAKE-based mutual HTTP authentication for preventing phishing attacks. CoRR abs/0911.5230 (2009)

Goichiro Hanaoka, Hideki Imai, Kazuto Ogawa, Hajime Watanabe: Chosen Ciphertext Secure Public Key Encryption with a Simple Structure. IWSEC 2008: 20-33

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: An improvement of discrete Tardos fingerprinting codes. IACR Cryptology ePrint Archive 2008: 338 (2008)

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: An Improvement of Tardos's Collusion-Secure Fingerprinting Codes with Very Short Lengths. AAECC 2007: 80-89

Yutaka Oiwa, Kazukuni Kobara, Hajime Watanabe: A New Variant for an Attack Against RSA Signature Verification Using Parameter Field. EuroPKI 2007: 143-153

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai: Optimization of Tardos's Fingerprinting Codes in a Viewpoint of Memory Amount. Information Hiding 2007: 279-293

Goichiro Hanaoka, Yumiko Hanaoka, Manabu Hagiwara, Hajime Watanabe, Hideki Imai: Unconditionally Secure Chaffing-and-Winnowing: A Relationship Between Encryption and Authentication. AAECC 2006: 154-162

Takashi Kitagawa, Peng Yang, Goichiro Hanaoka, Rui Zhang, Hajime Watanabe, Kanta Matsuura, Hideki Imai: Generic Transforms to Acquire CCA-Security for Identity Based Encryption: The Cases of FOpkc and REACT. ACISP 2006: 348-359

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai: Optimal probabilistic fingerprinting codes using optimal finite random variables related to numerical quadrature. CoRR abs/cs/0610036 (2006)

Hajime Watanabe, Takashi Kitagawa: An ID Coding Scheme for Fingerprinting, Randomized c-Secure CRT Code. ICICS 2002: 173-183

Madoka Hasegawa, Hajime Watanabe, Takashi Yamada, Shigeo Kato: Watermarking method for extracting embedded data without original image. VCIP 2002: 915-922

Hajime Watanabe, Tadao Kasami: A secure code for recipient watermarking against conspiracy attacks by all users. ICICS 1997: 414-423