Miyako Ohkubo

According to our database, Miyako Ohkubo authored at least 50 papers between 1999 and 2025.

Collaborative distances:

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

2025

A Certified-Input Mixnet from Two-Party Mercurial Signatures on Randomizable Ciphertexts.

Masayuki Abe, Masaya Nanri, Miyako Ohkubo, Octavio Perez-Kempner, Daniel Slamanig, Mehdi Tibouchi

Proceedings of the Computer Security - ESORICS 2025, 2025

2024

Scalable Mixnets from Mercurial Signatures on Randomizable Ciphertexts.

Masayuki Abe, Masaya Nanri, Miyako Ohkubo, Octavio Perez-Kempner, Daniel Slamanig, Mehdi Tibouchi

IACR Cryptol. ePrint Arch., 2024

Critical Round in Multi-Round Proofs: Compositions and Transformation to Trapdoor Commitments.

Masayuki Abe, David Balbás, Dung Bui, Miyako Ohkubo, Zehua Shang, Mehdi Tibouchi

IACR Cryptol. ePrint Arch., 2024

Hybrid Zero-Knowledge from Garbled Circuits.

Masayuki Abe, Miguel Ambrona, Miyako Ohkubo

IACR Cryptol. ePrint Arch., 2024

Hybrid Zero-Knowledge from Garbled Circuits and Circuit-Based Composition of Σ-Protocols.

Masayuki Abe, Miguel Ambrona, Miyako Ohkubo

Proceedings of the Security and Cryptography for Networks - 14th International Conference, 2024

CDS Composition of Multi-round Protocols.

Masayuki Abe, Andrej Bogdanov, Miyako Ohkubo, Alon Rosen, Zehua Shang, Mehdi Tibouchi

Proceedings of the Advances in Cryptology - CRYPTO 2024, 2024

2021

Acyclicity Programming for Sigma-Protocols.

Masayuki Abe, Miguel Ambrona, Andrej Bogdanov, Miyako Ohkubo, Alon Rosen

Proceedings of the Theory of Cryptography - 19th International Conference, 2021

2020

On Black-Box Extensions of Non-interactive Zero-Knowledge Arguments, and Signatures Directly from Simulation Soundness.

Masayuki Abe, Miguel Ambrona, Miyako Ohkubo

Proceedings of the Public-Key Cryptography - PKC 2020, 2020

Non-interactive Composition of Sigma-Protocols via Share-then-Hash.

Masayuki Abe, Miguel Ambrona, Andrej Bogdanov, Miyako Ohkubo, Alon Rosen

Proceedings of the Advances in Cryptology - ASIACRYPT 2020, 2020

2019

Efficient Fully Structure-Preserving Signatures and Shrinking Commitments.

Masayuki Abe, Jens Groth, Markulf Kohlweiss, Miyako Ohkubo, Mehdi Tibouchi

J. Cryptol., 2019

Opcount: A Pseudo-Code Performance Estimation System for Pairing-Based Cryptography.

Masayuki Abe, Fumitaka Hoshino, Miyako Ohkubo

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

Fast and Scalable Bilinear-Type Conversion Method for Large Scale Crypto Schemes.

Masayuki Abe, Fumitaka Hoshino, Miyako Ohkubo

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

Black-Box Language Extension of Non-Interactive Zero-Knowledge Arguments.

Masayuki Abe, Miguel Ambrona, Miyako Ohkubo

IACR Cryptol. ePrint Arch., 2019

Shorter QA-NIZK and SPS with Tighter Security.

Masayuki Abe, Charanjit S. Jutla, Miyako Ohkubo, Jiaxin Pan, Arnab Roy, Yuyu Wang

Proceedings of the Advances in Cryptology - ASIACRYPT 2019, 2019

2018

Lower Bounds on Structure-Preserving Signatures for Bilateral Messages.

Masayuki Abe, Miguel Ambrona, Miyako Ohkubo, Mehdi Tibouchi

Proceedings of the Security and Cryptography for Networks - 11th International Conference, 2018

Improved (Almost) Tightly-Secure Structure-Preserving Signatures.

Charanjit S. Jutla, Miyako Ohkubo, Arnab Roy

Proceedings of the Public-Key Cryptography - PKC 2018, 2018

Improved (Almost) Tightly-Secure Simulation-Sound QA-NIZK with Applications.

Masayuki Abe, Charanjit S. Jutla, Miyako Ohkubo, Arnab Roy

Proceedings of the Advances in Cryptology - ASIACRYPT 2018, 2018

2017

Compact Structure-Preserving Signatures with Almost Tight Security.

Masayuki Abe, Dennis Hofheinz, Ryo Nishimaki, Miyako Ohkubo, Jiaxin Pan

Proceedings of the Advances in Cryptology - CRYPTO 2017, 2017

2016

Design in Type-I, Run in Type-III: Fast and Scalable Bilinear-Type Conversion Using Integer Programming.

Masayuki Abe, Fumitaka Hoshino, Miyako Ohkubo

Proceedings of the Advances in Cryptology - CRYPTO 2016, 2016

2015

Fully Structure-Preserving Signatures and Shrinking Commitments.

Masayuki Abe, Markulf Kohlweiss, Miyako Ohkubo, Mehdi Tibouchi

Proceedings of the Advances in Cryptology - EUROCRYPT 2015, 2015

The Limits of Composable Crypto with Transferable Setup Devices.

Ioana Boureanu, Miyako Ohkubo, Serge Vaudenay

Proceedings of the 10th ACM Symposium on Information, 2015

2014

Unified, Minimal and Selectively Randomizable Structure-Preserving Signatures.

Masayuki Abe, Jens Groth, Miyako Ohkubo, Mehdi Tibouchi

Proceedings of the Theory of Cryptography - 11th Theory of Cryptography Conference, 2014

Structure-Preserving Signatures from Type II Pairings.

Masayuki Abe, Jens Groth, Miyako Ohkubo, Mehdi Tibouchi

Proceedings of the Advances in Cryptology - CRYPTO 2014, 2014

Converting Cryptographic Schemes from Symmetric to Asymmetric Bilinear Groups.

Masayuki Abe, Jens Groth, Miyako Ohkubo, Takeya Tango

Proceedings of the Advances in Cryptology - CRYPTO 2014, 2014

Introduction of structure-preserving signatures.

Miyako Ohkubo

Proceedings of the ASIAPKC'14, 2014

2013

A Forward Privacy Model for RFID Authentication Protocols.

Daisuke Moriyama, Miyako Ohkubo, Shin'ichiro Matsuo

Proceedings of the Information Security Theory and Practice. Security of Mobile and Cyber-Physical Systems, 2013

Tagged One-Time Signatures: Tight Security and Optimal Tag Size.

Masayuki Abe, Bernardo David, Markulf Kohlweiss, Ryo Nishimaki, Miyako Ohkubo

Proceedings of the Public-Key Cryptography - PKC 2013 - 16th International Conference on Practice and Theory in Public-Key Cryptography, Nara, Japan, February 26, 2013

2012

Group to Group Commitments Do Not Shrink.

Masayuki Abe, Kristiyan Haralambiev, Miyako Ohkubo

Proceedings of the Advances in Cryptology - EUROCRYPT 2012, 2012

Relations among Notions of Privacy for RFID Authentication Protocols.

Daisuke Moriyama, Shin'ichiro Matsuo, Miyako Ohkubo

Proceedings of the Computer Security - ESORICS 2012, 2012

Constant-Size Structure-Preserving Signatures: Generic Constructions and Simple Assumptions.

Masayuki Abe, Melissa Chase, Bernardo David, Markulf Kohlweiss, Ryo Nishimaki, Miyako Ohkubo

Proceedings of the Advances in Cryptology - ASIACRYPT 2012, 2012

2011

Anonymous Hierarchical Identity-Based Encryption with Short Ciphertexts.

Jae Hong Seo, Tetsutaro Kobayashi, Miyako Ohkubo, Koutarou Suzuki

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

A Study on Computational Formal Verification for Practical Cryptographic Protocol: The Case of Synchronous RFID Authentication.

Yoshikazu Hanatani, Miyako Ohkubo, Shin'ichiro Matsuo, Kazuo Sakiyama, Kazuo Ohta

Proceedings of the Financial Cryptography and Data Security, 2011

Optimal Structure-Preserving Signatures in Asymmetric Bilinear Groups.

Masayuki Abe, Jens Groth, Kristiyan Haralambiev, Miyako Ohkubo

Proceedings of the Advances in Cryptology - CRYPTO 2011, 2011

A Signature Scheme with Efficient Proof of Validity.

Masayuki Abe, Miyako Ohkubo

Proceedings of the Coding and Cryptology - Third International Workshop, 2011

Separating Short Structure-Preserving Signatures from Non-interactive Assumptions.

Masayuki Abe, Jens Groth, Miyako Ohkubo

Proceedings of the Advances in Cryptology - ASIACRYPT 2011, 2011

Double-Trapdoor Anonymous Tags for Traceable Signatures.

Masayuki Abe, Sherman S. M. Chow, Kristiyan Haralambiev, Miyako Ohkubo

Proceedings of the Applied Cryptography and Network Security, 2011

2010

Robust RFID Authentication Protocol with Formal Proof and Its Feasibility.

Miyako Ohkubo, Shin'ichiro Matsuo, Yoshikazu Hanatani, Kazuo Sakiyama, Kazuo Ohta

IACR Cryptol. ePrint Arch., 2010

Signing on Elements in Bilinear Groups for Modular Protocol Design.

Masayuki Abe, Kristiyan Haralambiev, Miyako Ohkubo

IACR Cryptol. ePrint Arch., 2010

Leakage-Resilient RFID Authentication with Forward-Privacy.

Shin'ichiro Matsuo, Le Trieu Phong, Miyako Ohkubo, Moti Yung

Proceedings of the Radio Frequency Identification: Security and Privacy Issues, 2010

Efficient Message Space Extension for Automorphic Signatures.

Masayuki Abe, Kristiyan Haralambiev, Miyako Ohkubo

Proceedings of the Information Security - 13th International Conference, 2010

Structure-Preserving Signatures and Commitments to Group Elements.

Masayuki Abe, Georg Fuchsbauer, Jens Groth, Kristiyan Haralambiev, Miyako Ohkubo

Proceedings of the Advances in Cryptology, 2010

2009

Anonymous Hierarchical Identity-Based Encryption with Constant Size Ciphertexts.

Jae Hong Seo, Tetsutaro Kobayashi, Miyako Ohkubo, Koutarou Suzuki

Proceedings of the Public Key Cryptography, 2009

A Framework for Universally Composable Non-committing Blind Signatures.

Masayuki Abe, Miyako Ohkubo

Proceedings of the Advances in Cryptology, 2009

2008

On the Definitions of Anonymity for Ring Signatures.

Miyako Ohkubo, Masayuki Abe

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008

2006

On the Definition of Anonymity for Ring Signatures.

Miyako Ohkubo, Masayuki Abe

Proceedings of the Progressin Cryptology, 2006

2005

RFID privacy issues and technical challenges.

Miyako Ohkubo, Koutarou Suzuki, Shingo Kinoshita

Commun. ACM, 2005

2002

1-out-of-n Signatures from a Variety of Keys.

Masayuki Abe, Miyako Ohkubo, Koutarou Suzuki

Proceedings of the Advances in Cryptology, 2002

2001

Provably Secure Fair Blind Signatures with Tight Revocation.

Masayuki Abe, Miyako Ohkubo

Proceedings of the Advances in Cryptology, 2001

2000

A Length-Invariant Hybrid Mix.

Miyako Ohkubo, Masayuki Abe

Proceedings of the Advances in Cryptology, 2000

1999

An Improvement on a Practical Secret Voting Scheme.

Miyako Ohkubo, Fumiaki Miura, Masayuki Abe, Atsushi Fujioka, Tatsuaki Okamoto

Proceedings of the Information Security, Second International Workshop, 1999