Agrawal, Shweta; Kitagawa, Fuyuki; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Public key encryption with secure key leasing. (English) Zbl 07789173 Hazay, Carmit (ed.) et al., Advances in cryptology – EUROCRYPT 2023. 42nd annual international conference on the theory and applications of cryptographic techniques, Lyon, France, April 23–27, 2023. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 14004, 581-610 (2023). MSC: 94A60 81P94 PDFBibTeX XMLCite \textit{S. Agrawal} et al., Lect. Notes Comput. Sci. 14004, 581--610 (2023; Zbl 07789173) Full Text: DOI arXiv
Abe, Masayuki; Hofheinz, Dennis; Nishimaki, Ryo; Ohkubo, Miyako; Pan, Jiaxin Compact structure-preserving signatures with almost tight security. (English) Zbl 1519.94209 J. Cryptology 36, No. 4, Paper No. 37, 41 p. (2023). MSC: 94A62 94A60 PDFBibTeX XMLCite \textit{M. Abe} et al., J. Cryptology 36, No. 4, Paper No. 37, 41 p. (2023; Zbl 1519.94209) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo Functional encryption with secure key leasing. (English) Zbl 1524.68122 Agrawal, Shweta (ed.) et al., Advances in cryptology – ASIACRYPT 2022. 28th international conference on the theory and application of cryptology and information security, Taipei, Taiwan, December 5–9, 2022. Proceedings. Part IV. Cham: Springer. Lect. Notes Comput. Sci. 13794, 569-598 (2023). MSC: 68P25 68N99 81P94 94A60 PDFBibTeX XMLCite \textit{F. Kitagawa} and \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 13794, 569--598 (2023; Zbl 1524.68122) Full Text: DOI arXiv
Agrawal, Shweta; Kitagawa, Fuyuki; Modi, Anuja; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Bounded functional encryption for Turing machines: adaptive security from general assumptions. (English) Zbl 1519.94027 Kiltz, Eike (ed.) et al., Theory of cryptography. 20th international conference, TCC 2022, Chicago, IL, USA, November 7–10, 2022. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 13747, 618-647 (2023). MSC: 94A60 68Q04 PDFBibTeX XMLCite \textit{S. Agrawal} et al., Lect. Notes Comput. Sci. 13747, 618--647 (2023; Zbl 1519.94027) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo KDM security for the Fujisaki-Okamoto transformations in the QROM. (English) Zbl 1519.94145 Hanaoka, Goichiro (ed.) et al., Public-key cryptography – PKC 2022. 25th IACR international conference on practice and theory of public-key cryptography, virtual event, March 8–11, 2022. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 13178, 286-315 (2022). MSC: 94A60 PDFBibTeX XMLCite \textit{F. Kitagawa} and \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 13178, 286--315 (2022; Zbl 1519.94145) Full Text: DOI
Nishimaki, Ryo The direction of updatable encryption does matter. (English) Zbl 1519.94180 Hanaoka, Goichiro (ed.) et al., Public-key cryptography – PKC 2022. 25th IACR international conference on practice and theory of public-key cryptography, virtual event, March 8–11, 2022. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 13178, 194-224 (2022). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 13178, 194--224 (2022; Zbl 1519.94180) Full Text: DOI
Hiroka, Taiga; Morimae, Tomoyuki; Nishimaki, Ryo; Yamakawa, Takashi Certified everlasting zero-knowledge proof for QMA. (English) Zbl 1516.94034 Dodis, Yevgeniy (ed.) et al., Advances in cryptology – CRYPTO 2022. 42nd annual international cryptology conference, CRYPTO 2022, Santa Barbara, CA, USA, August 15–18, 2022. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 13507, 239-268 (2022). MSC: 94A60 81P94 PDFBibTeX XMLCite \textit{T. Hiroka} et al., Lect. Notes Comput. Sci. 13507, 239--268 (2022; Zbl 1516.94034) Full Text: DOI arXiv
Agrawal, Shweta; Biswas, Rajarshi; Nishimaki, Ryo; Xagawa, Keita; Xie, Xiang; Yamada, Shota Cryptanalysis of Boyen’s attribute-based encryption scheme in TCC 2013. (English) Zbl 1497.94073 Des. Codes Cryptography 90, No. 10, 2301-2318 (2022). MSC: 94A60 94A62 PDFBibTeX XMLCite \textit{S. Agrawal} et al., Des. Codes Cryptography 90, No. 10, 2301--2318 (2022; Zbl 1497.94073) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo Watermarking PRFs against quantum adversaries. (English) Zbl 1502.81028 Dunkelman, Orr (ed.) et al., Advances in cryptology – EUROCRYPT 2022. 41st annual international conference on the theory and applications of cryptographic techniques, Trondheim, Norway, May 30 – June 3, 2022. Proceedings. Part III. Cham: Springer. Lect. Notes Comput. Sci. 13277, 488-518 (2022). MSC: 81P94 94A60 81P16 81P15 81P68 PDFBibTeX XMLCite \textit{F. Kitagawa} and \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 13277, 488--518 (2022; Zbl 1502.81028) Full Text: DOI arXiv
Kitagawa, Fuyuki; Nishimaki, Ryo; Tanaka, Keisuke Obfustopia built on secret-key functional encryption. (English) Zbl 07538096 J. Cryptology 35, No. 3, Paper No. 19, 102 p. (2022). MSC: 94A60 94A62 PDFBibTeX XMLCite \textit{F. Kitagawa} et al., J. Cryptology 35, No. 3, Paper No. 19, 102 p. (2022; Zbl 07538096) Full Text: DOI
Hiroka, Taiga; Morimae, Tomoyuki; Nishimaki, Ryo; Yamakawa, Takashi Quantum encryption with certified deletion, revisited: public key, attribute-based, and classical communication. (English) Zbl 1522.81070 Tibouchi, Mehdi (ed.) et al., Advances in cryptology – ASIACRYPT 2021. 27th international conference on the theory and application of cryptology and information security, Singapore, December 6–10, 2021. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 13090, 606-636 (2021). MSC: 81P94 94A60 94A05 81P45 81P70 PDFBibTeX XMLCite \textit{T. Hiroka} et al., Lect. Notes Comput. Sci. 13090, 606--636 (2021; Zbl 1522.81070) Full Text: DOI arXiv
Kitagawa, Fuyuki; Nishimaki, Ryo; Yamakawa, Takashi Secure software leasing from standard assumptions. (English) Zbl 07671164 Nissim, Kobbi (ed.) et al., Theory of cryptography. 19th international conference, TCC 2021, Raleigh, NC, USA, November 8–11, 2021. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 13042, 31-61 (2021). MSC: 68P25 94A60 81P94 PDFBibTeX XMLCite \textit{F. Kitagawa} et al., Lect. Notes Comput. Sci. 13042, 31--61 (2021; Zbl 07671164) Full Text: DOI arXiv
Döttling, Nico; Nishimaki, Ryo Universal proxy re-encryption. (English) Zbl 1514.94077 Garay, Juan A. (ed.), Public-key cryptography – PKC 2021. 24th IACR international conference on practice and theory of public key cryptography, virtual event, May 10–13, 2021. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 12710, 512-542 (2021). MSC: 94A60 94A62 PDFBibTeX XMLCite \textit{N. Döttling} and \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 12710, 512--542 (2021; Zbl 1514.94077) Full Text: DOI
Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Round-optimal blind signatures in the plain model from classical and quantum standard assumptions. (English) Zbl 1479.94326 Canteaut, Anne (ed.) et al., Advances in cryptology – EUROCRYPT 2021. 40th annual international conference on the theory and applications of cryptographic techniques, Zagreb, Croatia, October 17–21, 2021. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 12696, 404-434 (2021). MSC: 94A62 94A60 81P94 PDFBibTeX XMLCite \textit{S. Katsumata} et al., Lect. Notes Comput. Sci. 12696, 404--434 (2021; Zbl 1479.94326) Full Text: DOI
Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Compact designated verifier NIZKs from the CDH assumption without pairings. (English) Zbl 1479.94198 J. Cryptology 34, No. 4, Paper No. 42, 71 p. (2021). MSC: 94A60 94A62 PDFBibTeX XMLCite \textit{S. Katsumata} et al., J. Cryptology 34, No. 4, Paper No. 42, 71 p. (2021; Zbl 1479.94198) Full Text: DOI
Tomida, Junichi; Kawahara, Yuto; Nishimaki, Ryo Fast, compact, and expressive attribute-based encryption. (English) Zbl 1475.94171 Des. Codes Cryptography 89, No. 11, 2577-2626 (2021). MSC: 94A60 68P25 PDFBibTeX XMLCite \textit{J. Tomida} et al., Des. Codes Cryptography 89, No. 11, 2577--2626 (2021; Zbl 1475.94171) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo; Tanaka, Keisuke Simple and generic constructions of succinct functional encryption. (English) Zbl 1469.94103 J. Cryptology 34, No. 3, Paper No. 25, 46 p. (2021). MSC: 94A60 94A62 PDFBibTeX XMLCite \textit{F. Kitagawa} et al., J. Cryptology 34, No. 3, Paper No. 25, 46 p. (2021; Zbl 1469.94103) Full Text: DOI
Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Adaptively secure inner product encryption from LWE. (English) Zbl 1511.94118 Moriai, Shiho (ed.) et al., Advances in cryptology – ASIACRYPT 2020. 26th international conference on the theory and application of cryptology and information security, Daejeon, South Korea, December 7–11, 2020. Proceedings. Part III. Cham: Springer. Lect. Notes Comput. Sci. 12493, 375-404 (2020). MSC: 94A60 PDFBibTeX XMLCite \textit{S. Katsumata} et al., Lect. Notes Comput. Sci. 12493, 375--404 (2020; Zbl 1511.94118) Full Text: DOI
Davidson, Alex; Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Adaptively secure constrained pseudorandom functions in the standard model. (English) Zbl 1501.94038 Micciancio, Daniele (ed.) et al., Advances in cryptology – CRYPTO 2020. 40th annual international cryptology conference, CRYPTO 2020, Santa Barbara, CA, USA, August 17–21, 2020. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 12170, 559-589 (2020). MSC: 94A60 PDFBibTeX XMLCite \textit{A. Davidson} et al., Lect. Notes Comput. Sci. 12170, 559--589 (2020; Zbl 1501.94038) Full Text: DOI
Tomida, Junichi; Kawahara, Yuto; Nishimaki, Ryo Fast, compact, and expressive attribute-based encryption. (English) Zbl 1500.94054 Kiayias, Aggelos (ed.) et al., Public-key cryptography – PKC 2020. 23rd IACR international conference on practice and theory of public-key cryptography, Edinburgh, UK, May 4–7, 2020. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 12110, 3-33 (2020). MSC: 94A60 PDFBibTeX XMLCite \textit{J. Tomida} et al., Lect. Notes Comput. Sci. 12110, 3--33 (2020; Zbl 1500.94054) Full Text: DOI
Nishimaki, Ryo Equipping public-key cryptographic primitives with watermarking (or: a hole is to watermark). (English) Zbl 1479.94237 Pass, Rafael (ed.) et al., Theory of cryptography. 18th international conference, TCC 2020, Durham, NC, USA, November 16–19, 2020. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 12550, 179-209 (2020). MSC: 94A60 94A62 PDFBibTeX XMLCite \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 12550, 179--209 (2020; Zbl 1479.94237) Full Text: DOI
Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Compact NIZKs from standard assumptions on bilinear maps. (English) Zbl 07436951 Canteaut, Anne (ed.) et al., Advances in cryptology – EUROCRYPT 2020. 39th annual international conference on the theory and applications of cryptographic techniques, Zagreb, Croatia, May 10–14, 2020. Proceedings. Part III. Cham: Springer. Lect. Notes Comput. Sci. 12107, 379-409 (2020). MSC: 68P25 68Q15 94A60 PDFBibTeX XMLCite \textit{S. Katsumata} et al., Lect. Notes Comput. Sci. 12107, 379--409 (2020; Zbl 07436951) Full Text: DOI
Bitansky, Nir; Nishimaki, Ryo; Passelègue, Alain; Wichs, Daniel From cryptomania to obfustopia through secret-key functional encryption. (English) Zbl 1435.94123 J. Cryptology 33, No. 2, 357-405 (2020). MSC: 94A60 PDFBibTeX XMLCite \textit{N. Bitansky} et al., J. Cryptology 33, No. 2, 357--405 (2020; Zbl 1435.94123) Full Text: DOI
Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Exploring constructions of compact NIZKs from various assumptions. (English) Zbl 1509.94102 Boldyreva, Alexandra (ed.) et al., Advances in cryptology – CRYPTO 2019. 39th annual international cryptology conference, Santa Barbara, CA, USA, August 18–22, 2019. Proceedings. Part III. Cham: Springer. Lect. Notes Comput. Sci. 11694, 639-669 (2019). MSC: 94A60 PDFBibTeX XMLCite \textit{S. Katsumata} et al., Lect. Notes Comput. Sci. 11694, 639--669 (2019; Zbl 1509.94102) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo; Tanaka, Keisuke; Yamakawa, Takashi Adaptively secure and succinct functional encryption: improving security and efficiency, simultaneously. (English) Zbl 1509.94103 Boldyreva, Alexandra (ed.) et al., Advances in cryptology – CRYPTO 2019. 39th annual international cryptology conference, Santa Barbara, CA, USA, August 18–22, 2019. Proceedings. Part III. Cham: Springer. Lect. Notes Comput. Sci. 11694, 521-551 (2019). MSC: 94A60 PDFBibTeX XMLCite \textit{F. Kitagawa} et al., Lect. Notes Comput. Sci. 11694, 521--551 (2019; Zbl 1509.94103) Full Text: DOI
Katsumata, Shuichi; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Designated verifier/prover and preprocessing NIZKs from Diffie-Hellman assumptions. (English) Zbl 1509.94101 Ishai, Yuval (ed.) et al., Advances in cryptology – EUROCRYPT 2019. 38th annual international conference on the theory and applications of cryptographic techniques, Darmstadt, Germany, May 19–23, 2019. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 11477, 622-651 (2019). MSC: 94A60 PDFBibTeX XMLCite \textit{S. Katsumata} et al., Lect. Notes Comput. Sci. 11477, 622--651 (2019; Zbl 1509.94101) Full Text: DOI
Attrapadung, Nuttapong; Matsuda, Takahiro; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Adaptively single-key secure constrained PRFs for \(\text{NC}^1\). (English) Zbl 1509.94059 Lin, Dongdai (ed.) et al., Public-key cryptography – PKC 2019. 22nd IACR international conference on practice and theory of public-key cryptography, Beijing, China, April 14–17, 2019. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 11443, 223-253 (2019). MSC: 94A60 PDFBibTeX XMLCite \textit{N. Attrapadung} et al., Lect. Notes Comput. Sci. 11443, 223--253 (2019; Zbl 1509.94059) Full Text: DOI
Nishimaki, Ryo; Yamakawa, Takashi Leakage-resilient identity-based encryption in bounded retrieval model with nearly optimal leakage-ratio. (English) Zbl 1465.94084 Lin, Dongdai (ed.) et al., Public-key cryptography – PKC 2019. 22nd IACR international conference on practice and theory of public-key cryptography, Beijing, China, April 14–17, 2019. Proceedings. Part I. Cham: Springer. Lect. Notes Comput. Sci. 11442, 466-495 (2019). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki} and \textit{T. Yamakawa}, Lect. Notes Comput. Sci. 11442, 466--495 (2019; Zbl 1465.94084) Full Text: DOI
Cohen, Aloni; Holmgren, Justin; Nishimaki, Ryo; Vaikuntanathan, Vinod; Wichs, Daniel Watermarking cryptographic capabilities. (English) Zbl 1443.94052 SIAM J. Comput. 47, No. 6, 2157-2202 (2018). MSC: 94A60 PDFBibTeX XMLCite \textit{A. Cohen} et al., SIAM J. Comput. 47, No. 6, 2157--2202 (2018; Zbl 1443.94052) Full Text: DOI
Attrapadung, Nuttapong; Matsuda, Takahiro; Nishimaki, Ryo; Yamada, Shota; Yamakawa, Takashi Constrained PRFs for \(\mathrm{NC}^1\) in traditional groups. (English) Zbl 1436.94033 Shacham, Hovav (ed.) et al., Advances in cryptology – CRYPTO 2018. 38th annual international cryptology conference, Santa Barbara, CA, USA, August 19–23, 2018. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 10992, 543-574 (2018). MSC: 94A60 PDFBibTeX XMLCite \textit{N. Attrapadung} et al., Lect. Notes Comput. Sci. 10992, 543--574 (2018; Zbl 1436.94033) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo; Tanaka, Keisuke Obfustopia built on secret-key functional encryption. (English) Zbl 1428.94081 Nielsen, Jesper Buus (ed.) et al., Advances in cryptology – EUROCRYPT 2018. 37th annual international conference on the theory and applications of cryptographic techniques, Tel Aviv, Israel, April 29 – May 3, 2018. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 10821, 603-648 (2018). MSC: 94A60 PDFBibTeX XMLCite \textit{F. Kitagawa} et al., Lect. Notes Comput. Sci. 10821, 603--648 (2018; Zbl 1428.94081) Full Text: DOI
Kitagawa, Fuyuki; Nishimaki, Ryo; Tanaka, Keisuke Simple and generic constructions of succinct functional encryption. (English) Zbl 1420.94081 Abdalla, Michel (ed.) et al., Public-key cryptography – PKC 2018. 21st IACR international conference on practice and theory of public-key cryptography, Rio de Janeiro, Brazil, March 25–29, 2018. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 10770, 187-217 (2018). MSC: 94A60 PDFBibTeX XMLCite \textit{F. Kitagawa} et al., Lect. Notes Comput. Sci. 10770, 187--217 (2018; Zbl 1420.94081) Full Text: DOI
Abe, Masayuki; Hofheinz, Dennis; Nishimaki, Ryo; Ohkubo, Miyako; Pan, Jiaxin Compact structure-preserving signatures with almost tight security. (English) Zbl 1410.94035 Katz, Jonathan (ed.) et al., Advances in cryptology – CRYPTO 2017. 37th annual international cryptology conference, Santa Barbara, CA, USA, August 20–24, 2017. Proceedings. Part II. Cham: Springer. Lect. Notes Comput. Sci. 10402, 548-580 (2017). MSC: 94A60 PDFBibTeX XMLCite \textit{M. Abe} et al., Lect. Notes Comput. Sci. 10402, 548--580 (2017; Zbl 1410.94035) Full Text: DOI
Nishimaki, Ryo Watermarking cryptographic programs. (English) Zbl 1410.94101 Phan, Raphael C.-W. (ed.) et al., Paradigms in cryptology – Mycrypt 2016. Malicious and exploratory cryptology. Second international conference, Mycrypt 2016, Kuala Lumpur, Malaysia, December 1–2, 2016. Revised selected papers. Cham: Springer. Lect. Notes Comput. Sci. 10311, 521-543 (2017). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 10311, 521--543 (2017; Zbl 1410.94101) Full Text: DOI
Cohen, Aloni; Holmgren, Justin; Nishimaki, Ryo; Vaikuntanathan, Vinod; Wichs, Daniel Watermarking cryptographic capabilities. (English) Zbl 1377.94046 Wichs, Daniel (ed.) et al., Proceedings of the 48th annual ACM SIGACT symposium on theory of computing, STOC ’16, Cambridge, MA, USA, June 19–21, 2016. New York, NY: Association for Computing Machinery (ACM) (ISBN 978-1-4503-4132-5). 1115-1127 (2016). MSC: 94A60 PDFBibTeX XMLCite \textit{A. Cohen} et al., in: Proceedings of the 48th annual ACM SIGACT symposium on theory of computing, STOC '16, Cambridge, MA, USA, June 19--21, 2016. New York, NY: Association for Computing Machinery (ACM). 1115--1127 (2016; Zbl 1377.94046) Full Text: DOI Link
Bitansky, Nir; Nishimaki, Ryo; Passelègue, Alain; Wichs, Daniel From cryptomania to obfustopia through secret-key functional encryption. (English) Zbl 1400.94122 Hirt, Martin (ed.) et al., Theory of cryptography. 14th international conference, TCC 2016-B, Beijing, China, October 31 – November 3, 2016, Proceedings. Part II. Berlin: Springer (ISBN 978-3-662-53643-8/pbk; 978-3-662-53644-5/ebook). Lecture Notes in Computer Science 9986, 391-418 (2016). MSC: 94A60 PDFBibTeX XMLCite \textit{N. Bitansky} et al., Lect. Notes Comput. Sci. 9986, 391--418 (2016; Zbl 1400.94122) Full Text: DOI
Abe, Masayuki; Chase, Melissa; David, Bernardo; Kohlweiss, Markulf; Nishimaki, Ryo; Ohkubo, Miyako Constant-size structure-preserving signatures: generic constructions and simple assumptions. (English) Zbl 1365.94395 J. Cryptology 29, No. 4, 833-878 (2016). MSC: 94A60 PDFBibTeX XMLCite \textit{M. Abe} et al., J. Cryptology 29, No. 4, 833--878 (2016; Zbl 1365.94395) Full Text: DOI Link
Nishimaki, Ryo; Wichs, Daniel; Zhandry, Mark Anonymous traitor tracing: how to embed arbitrary information in a key. (English) Zbl 1371.94652 Fischlin, Marc (ed.) et al., Advances in cryptology – EUROCRYPT 2016. 35th annual international conference on the theory and applications of cryptographic techniques, Vienna, Austria, May 8–12, 2016. Proceedings. Part II. Berlin: Springer (ISBN 978-3-662-49895-8/pbk; 978-3-662-49896-5/ebook). Lecture Notes in Computer Science 9666, 388-419 (2016). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki} et al., Lect. Notes Comput. Sci. 9666, 388--419 (2016; Zbl 1371.94652) Full Text: DOI
Nishimaki, Ryo; Xagawa, Keita Verifiably encrypted signatures with short keys based on the decisional linear problem and obfuscation for encrypted VES. (English) Zbl 1347.94053 Des. Codes Cryptography 77, No. 1, 61-98 (2015). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki} and \textit{K. Xagawa}, Des. Codes Cryptography 77, No. 1, 61--98 (2015; Zbl 1347.94053) Full Text: DOI
David, Bernardo M.; Nishimaki, Ryo; Ranellucci, Samuel; Tapp, Alain Generalizing efficient multiparty computation. (English) Zbl 1336.94042 Lehmann, Anja (ed.) et al., Information theoretic security. 8th international conference, ICITS 2015, Lugano, Switzerland, May 2–5, 2015. Proceedings. Cham: Springer (ISBN 978-3-319-17469-3/pbk; 978-3-319-17470-9/ebook). Lecture Notes in Computer Science 9063, 15-32 (2015). MSC: 94A60 68M12 68P25 94A62 PDFBibTeX XMLCite \textit{B. M. David} et al., Lect. Notes Comput. Sci. 9063, 15--32 (2015; Zbl 1336.94042) Full Text: DOI
Chandran, Nishanth; Chase, Melissa; Liu, Feng-Hao; Nishimaki, Ryo; Xagawa, Keita Re-encryption, functional re-encryption, and multi-hop re-encryption: a framework for achieving obfuscation-based security and instantiations from lattices. (English) Zbl 1335.94037 Krawczyk, Hugo (ed.), Public-key cryptography – PKC 2014. 17th international conference on practice and theory in public-key cryptography, Buenos Aires, Argentina, March 26–28, 2014. Proceedings. Berlin: Springer (ISBN 978-3-642-54630-3/pbk). Lecture Notes in Computer Science 8383, 95-112 (2014). MSC: 94A60 PDFBibTeX XMLCite \textit{N. Chandran} et al., Lect. Notes Comput. Sci. 8383, 95--112 (2014; Zbl 1335.94037) Full Text: DOI
Nishimaki, Ryo How to watermark cryptographic functions. (English) Zbl 1306.94081 Johansson, Thomas (ed.) et al., Advances in cryptology – EUROCRYPT 2013. 32nd annual international conference on the theory and applications of cryptographic techniques, Athens, Greece, May 26–30, 2013. Proceedings. Berlin: Springer (ISBN 978-3-642-38347-2/pbk). Lecture Notes in Computer Science 7881, 111-125 (2013). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki}, Lect. Notes Comput. Sci. 7881, 111--125 (2013; Zbl 1306.94081) Full Text: DOI
Nishimaki, Ryo; Xagawa, Keita Verifiably encrypted signatures with short keys based on the decisional linear problem and obfuscation for encrypted VES. (English) Zbl 1314.94105 Kurosawa, Kaoru (ed.) et al., Public-key cryptography – PKC 2013. 16th international conference on practice and theory in public-key cryptography, Nara, Japan, February 26–March 1, 2013. Proceedings. Berlin: Springer (ISBN 978-3-642-36361-0/pbk). Lecture Notes in Computer Science 7778, 405-422 (2013). MSC: 94A62 PDFBibTeX XMLCite \textit{R. Nishimaki} and \textit{K. Xagawa}, Lect. Notes Comput. Sci. 7778, 405--422 (2013; Zbl 1314.94105) Full Text: DOI
Abe, Masayuki; David, Bernardo; Kohlweiss, Markulf; Nishimaki, Ryo; Ohkubo, Miyako Tagged one-time signatures: tight security and optimal tag size. (English) Zbl 1314.94099 Kurosawa, Kaoru (ed.) et al., Public-key cryptography – PKC 2013. 16th international conference on practice and theory in public-key cryptography, Nara, Japan, February 26–March 1, 2013. Proceedings. Berlin: Springer (ISBN 978-3-642-36361-0/pbk). Lecture Notes in Computer Science 7778, 312-331 (2013). MSC: 94A62 PDFBibTeX XMLCite \textit{M. Abe} et al., Lect. Notes Comput. Sci. 7778, 312--331 (2013; Zbl 1314.94099) Full Text: DOI Link
Abe, Masayuki; Chase, Melissa; David, Bernardo; Kohlweiss, Markulf; Nishimaki, Ryo; Ohkubo, Miyako Constant-size structure-preserving signatures: generic constructions and simple assumptions. (English) Zbl 1292.94016 Wang, Xiaoyun (ed.) et al., Advances in cryptology – ASIACRYPT 2012. 18th international conference on the theory and application of cryptology and information security, Beijing, China, December 2–6, 2012. Proceedings. Berlin: Springer (ISBN 978-3-642-34960-7/pbk). Lecture Notes in Computer Science 7658, 4-24 (2012). MSC: 94A60 PDFBibTeX XMLCite \textit{M. Abe} et al., Lect. Notes Comput. Sci. 7658, 4--24 (2012; Zbl 1292.94016) Full Text: DOI
Nishimaki, Ryo; Fujisaki, Eiichiro; Tanaka, Keisuke A multi-trapdoor commitment scheme from the RSA assumption. (English) Zbl 1323.94131 Steinfeld, Ron (ed.) et al., Information security and privacy. 15th Australasian conference, ACISP 2010, Sydney, Australia, July 5–7, 2010. Proceedings. Berlin: Springer (ISBN 978-3-642-14080-8/pbk). Lecture Notes in Computer Science 6168, 182-199 (2010). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki} et al., Lect. Notes Comput. Sci. 6168, 182--199 (2010; Zbl 1323.94131) Full Text: DOI
Matsuda, Toshihide; Nishimaki, Ryo; Tanaka, Keisuke CCA proxy re-encryption without bilinear maps in the standard model. (English) Zbl 1279.94100 Nguyen, Phong Q. (ed.) et al., Public key cryptography – PKC 2010. 13th international conference on practice and theory in public key cryptography, Paris, France, May 26–28, 2010. Proceedings. Berlin: Springer (ISBN 978-3-642-13012-0/pbk). Lecture Notes in Computer Science 6056, 261-278 (2010). MSC: 94A60 PDFBibTeX XMLCite \textit{T. Matsuda} et al., Lect. Notes Comput. Sci. 6056, 261--278 (2010; Zbl 1279.94100) Full Text: DOI
Fujisaki, Eiichiro; Nishimaki, Ryo; Tanaka, Keisuke On the insecurity of the Fiat-Shamir signatures with iterative hash functions. (English) Zbl 1267.94118 Pieprzyk, Josef (ed.) et al., Provable security. Third international conference, ProvSec 2009, Guangzhou, China, November 11–13, 2009. Proceedings. Berlin: Springer (ISBN 978-3-642-04641-4/pbk). Lecture Notes in Computer Science 5848, 118-128 (2009). MSC: 94A62 94A60 PDFBibTeX XMLCite \textit{E. Fujisaki} et al., Lect. Notes Comput. Sci. 5848, 118--128 (2009; Zbl 1267.94118) Full Text: DOI
Nishimaki, Ryo; Fujisaki, Eiichiro; Tanaka, Keisuke Efficient non-interactive universally composable string-commitment schemes. (English) Zbl 1267.94128 Pieprzyk, Josef (ed.) et al., Provable security. Third international conference, ProvSec 2009, Guangzhou, China, November 11–13, 2009. Proceedings. Berlin: Springer (ISBN 978-3-642-04641-4/pbk). Lecture Notes in Computer Science 5848, 3-18 (2009). MSC: 94A62 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki} et al., Lect. Notes Comput. Sci. 5848, 3--18 (2009; Zbl 1267.94128) Full Text: DOI
Matsuda, Toshihide; Nishimaki, Ryo; Numayama, Akira; Tanaka, Keisuke Security on hybrid encryption with the tag-KEM/DEM framework. (English) Zbl 1284.94094 Boyd, Colin (ed.) et al., Information security and privacy. 14th Australasian conference, ACISP 2009, Brisbane, Australia, July 1–3, 2009. Proceedings. Berlin: Springer (ISBN 978-3-642-02619-5/pbk). Lecture Notes in Computer Science 5594, 343-359 (2009). MSC: 94A60 PDFBibTeX XMLCite \textit{T. Matsuda} et al., Lect. Notes Comput. Sci. 5594, 343--359 (2009; Zbl 1284.94094) Full Text: DOI
Nishimaki, Ryo; Manabe, Yoshifumi; Okamoto, Tatsuaki Universally composable identity-based encryption. (English) Zbl 1295.94119 Nguyen, Phong Q. (ed.), Progress in cryptology – VIETCRYPT 2006. First international conference on cryptology in Vietnam, Hanoi, Vietnam, September 25–28, 2006. Revised selected papers. Berlin: Springer (ISBN 978-3-540-68799-3/pbk). Lecture Notes in Computer Science 4341, 337-353 (2006). MSC: 94A60 PDFBibTeX XMLCite \textit{R. Nishimaki} et al., Lect. Notes Comput. Sci. 4341, 337--353 (2006; Zbl 1295.94119) Full Text: DOI