Tatsuaki Okamoto Vis

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81EEMasayuki Abe, Eike Kiltz, Tatsuaki Okamoto: Compact CCA-Secure Encryption for Messages of Arbitrary Length. Public Key Cryptography 2009: 377-392
80EEMasayuki Abe, Eike Kiltz, Tatsuaki Okamoto: Chosen Ciphertext Security with Optimal Ciphertext Overhead. ASIACRYPT 2008: 355-371
79EENorio Akagi, Yoshifumi Manabe, Tatsuaki Okamoto: An Efficient Anonymous Credential System. Financial Cryptography 2008: 272-286
78EETatsuaki Okamoto, Katsuyuki Takashima: Homomorphic Encryption and Signatures from Vector Decomposition. Pairing 2008: 57-74
77EEWaka Nagao, Yoshifumi Manabe, Tatsuaki Okamoto: Relationship of Three Cryptographic Channels in the UC Framework. ProvSec 2008: 268-282
76EERyo Nishimaki, Yoshifumi Manabe, Tatsuaki Okamoto: Universally Composable Identity-Based Encryption. IEICE Transactions 91-A(1): 262-271 (2008)
75EEWaka Nagao, Yoshifumi Manabe, Tatsuaki Okamoto: On the Equivalence of Several Security Notions of KEM and DEM. IEICE Transactions 91-A(1): 283-297 (2008)
74EEYusuke Okada, Yoshifumi Manabe, Tatsuaki Okamoto: An optimistic fair exchange protocol and its security in the universal composability framework. IJACT 1(1): 70-77 (2008)
73 Tatsuaki Okamoto, Xiaoyun Wang: Public Key Cryptography - PKC 2007, 10th International Conference on Practice and Theory in Public-Key Cryptography, Beijing, China, April 16-20, 2007, Proceedings Springer 2007
72 Tsuyoshi Takagi, Tatsuaki Okamoto, Eiji Okamoto, Takeshi Okamoto: Pairing-Based Cryptography - Pairing 2007, First International Conference, Tokyo, Japan, July 2-4, 2007, Proceedings Springer 2007
71 Feng Bao, San Ling, Tatsuaki Okamoto, Huaxiong Wang, Chaoping Xing: Cryptology and Network Security, 6th International Conference, CANS 2007, Singapore, December 8-10, 2007, Proceedings Springer 2007
70EETatsuaki Okamoto: Authenticated Key Exchange and Key Encapsulation in the Standard Model. ASIACRYPT 2007: 474-484
69EETatsuaki Okamoto: Cryptography Based on Bilinear Maps. AAECC 2006: 35-50
68EETatsuaki Okamoto: Efficient Blind and Partially Blind Signatures Without Random Oracles. TCC 2006: 80-99
67EERyo Nishimaki, Yoshifumi Manabe, Tatsuaki Okamoto: Universally Composable Identity-Based Encryption. VIETCRYPT 2006: 337-353
66EETatsuaki Okamoto: On Pairing-Based Cryptosystems. VIETCRYPT 2006: 50-66
65EEWaka Nagao, Yoshifumi Manabe, Tatsuaki Okamoto: A Universally Composable Secure Channel Based on the KEM-DEM Framework. IEICE Transactions 89-A(1): 28-38 (2006)
64EEWaka Nagao, Yoshifumi Manabe, Tatsuaki Okamoto: A Universally Composable Secure Channel Based on the KEM-DEM Framework. TCC 2005: 426-444
63EETatsuaki Okamoto, Ryo Kashima: Resource Bounded Unprovability of Computational Lower Bounds CoRR abs/cs/0503091: (2005)
62EEChung-Huang Yang, Hikaru Morita, Tatsuaki Okamoto: Security and Performance Evaluation of ESIGN and RSA on IC Cards by Using Byte-Unit Modular Algorithms. IEICE Transactions 88-B(3): 1244-1248 (2005)
61 Tatsuaki Okamoto: Topics in Cryptology - CT-RSA 2004, The Cryptographers' Track at the RSA Conference 2004, San Francisco, CA, USA, February 23-27, 2004, Proceedings Springer 2004
60EERyotaro Hayashi, Tatsuaki Okamoto, Keisuke Tanaka: An RSA Family of Trap-Door Permutations with a Common Domain and Its Applications. Public Key Cryptography 2004: 291-304
59EEEiichiro Fujisaki, Tatsuaki Okamoto, David Pointcheval, Jacques Stern: RSA-OAEP Is Secure under the RSA Assumption. J. Cryptology 17(2): 81-104 (2004)
58EETatsuaki Okamoto, Jacques Stern: Almost Uniform Density of Power Residues and the Provable Security of ESIGN. ASIACRYPT 2003: 287-301
57 Sihan Qing, Tatsuaki Okamoto, Jianying Zhou: Information and Communications Security, Third International Conference, ICICS 2001, Xian, China, November 13-16, 2001 Springer 2001
56EEEiichiro Fujisaki, Tatsuaki Okamoto, David Pointcheval, Jacques Stern: RSA-OAEP Is Secure under the RSA Assumption. CRYPTO 2001: 260-274
55EETatsuaki Okamoto, David Pointcheval: REACT: Rapid Enhanced-Security Asymmetric Cryptosystem Transform. CT-RSA 2001: 159-175
54EETatsuaki Okamoto, David Pointcheval: The Gap-Problems: A New Class of Problems for the Security of Cryptographic Schemes. Public Key Cryptography 2001: 104-118
53 Tatsuaki Okamoto: Advances in Cryptology - ASIACRYPT 2000, 6th International Conference on the Theory and Application of Cryptology and Information Security, Kyoto, Japan, December 3-7, 2000, Proceedings Springer 2000
52EETatsuaki Okamoto, Keisuke Tanaka, Shigenori Uchiyama: Quantum Public-Key Cryptosystems. CRYPTO 2000: 147-165
51EEMasayuki Abe, Tatsuaki Okamoto: Provably Secure Partially Blind Signatures. CRYPTO 2000: 271-286
50 Tatsuaki Okamoto: On Relationships between Statistical Zero-Knowledge Proofs. J. Comput. Syst. Sci. 60(1): 47-108 (2000)
49EEMasayuki Abe, Tatsuaki Okamoto: A Signature Scheme with Message Recovery as Secure as Discrete Logarithm. ASIACRYPT 1999: 378-389
48EEEiichiro Fujisaki, Tatsuaki Okamoto: Secure Integration of Asymmetric and Symmetric Encryption Schemes. CRYPTO 1999: 537-554
47 Masayuki Abe, Tatsuaki Okamoto: Delegation Chains Secure up to Constant Length. ICICS 1999: 144-156
46EEMiyako Ohkubo, Fumiaki Miura, Masayuki Abe, Atsushi Fujioka, Tatsuaki Okamoto: An Improvement on a Practical Secret Voting Scheme. ISW 1999: 225-234
45EEEiichiro Fujisaki, Tatsuaki Okamoto: How to Enhance the Security of Public-Key Encryption at Minimum Cost. Public Key Cryptography 1999: 53-68
44EEKazuo Ohta, Tatsuaki Okamoto: On Concrete Security Treatment of Signatures Derived from Identification. CRYPTO 1998: 354-369
43EETatsuaki Okamoto, Shigenori Uchiyama: A New Public-Key Cryptosystem as Secure as Factoring. EUROCRYPT 1998: 308-318
42EEEiichiro Fujisaki, Tatsuaki Okamoto: A Practical and Provably Secure Scheme for Publicly Verifiable Secret Sharing and Its Applications. EUROCRYPT 1998: 32-46
41EETatsuaki Okamoto, Shigenori Uchiyama: Security of an Identity-Based Cryptosystem and the Related Reductions. EUROCRYPT 1998: 546-560
40EETatsuaki Okamoto, Moti Yung: Lower Bounds on Term-Based Divisible Cash Systems. Public Key Cryptography 1998: 72-82
39 Yongfei Han, Tatsuaki Okamoto, Sihan Qing: Information and Communication Security, First International Conference, ICICS'97, Beijing, China, November 11-14, 1997, Proceedings Springer 1997
38EEEiichiro Fujisaki, Tatsuaki Okamoto: Statistical Zero Knowledge Protocols to Prove Modular Polynomial Relations. CRYPTO 1997: 16-30
37EEGiovanni Di Crescenzo, Tatsuaki Okamoto, Moti Yung: Keeping the SZK-Verifier Honest Unconditionally. CRYPTO 1997: 31-45
36 Tatsuaki Okamoto: Threshold Key-Recovery Systems for RSA. Security Protocols Workshop 1997: 191-200
35 Tatsuaki Okamoto: Receipt-Free Electronic Voting Schemes for Large Scale Elections. Security Protocols Workshop 1997: 25-35
34 Tatsuaki Okamoto: An electronic voting scheme. IFIP World Conference on IT Tools 1996: 21-30
33EETatsuaki Okamoto: On Relationships between Statistical Zero-Knowledge Proofs. STOC 1996: 649-658
32 Eiichiro Fujisaki, Tatsuaki Okamoto: Practical Escrow Cash System. Security Protocols Workshop 1996: 33-48
31EEIvan Damgård, Oded Goldreich, Tatsuaki Okamoto, Avi Wigderson: Honest Verifier vs Dishonest Verifier in Public Cain Zero-Knowledge Proofs. CRYPTO 1995: 325-338
30EETatsuaki Okamoto: An Efficient Divisible Electronic Cash Scheme. CRYPTO 1995: 438-451
29EETatsuaki Okamoto, Kazuo Ohta: How to Simultaneously Exchange Secrets by General Assumptions. ACM Conference on Computer and Communications Security 1994: 184-192
28EEAlfredo De Santis, Tatsuaki Okamoto, Giuseppe Persiano: Zero-Knowledge Proofs af Computational Power in the Shared String Model. ASIACRYPT 1994: 182-192
27EETatsuaki Okamoto: Designated Confirmer Signatures and Public-Key Encryption are Equivalent. CRYPTO 1994: 61-74
26EETony Eng, Tatsuaki Okamoto: Single-Term Divisible Electronic Coins. EUROCRYPT 1994: 306-319
25EEChoonsik Park, Kaoru Kurosawa, Tatsuaki Okamoto, Shigeo Tsujii: On Key Distribution and Authentication in Mobile Radio Networks. EUROCRYPT 1993: 461-465
24EETatsuaki Okamoto: On the Relationship among Cryptographic Physical Assumptions. ISAAC 1993: 369-378
23 Alfred Menezes, Tatsuaki Okamoto, Scott A. Vanstone: Reducing elliptic curve logarithms to logarithms in a finite field. IEEE Transactions on Information Theory 39(5): 1639-1646 (1993)
22 Atsushi Fujioka, Tatsuaki Okamoto, Kazuo Ohta: A Practical Secret Voting Scheme for Large Scale Elections. AUSCRYPT 1992: 244-251
21EETatsuaki Okamoto: Provably Secure and Practical Identification Schemes and Corresponding Signature Schemes. CRYPTO 1992: 31-53
20EETatsuaki Okamoto, Atsushi Fujioka, Eiichiro Fujisaki: An Efficient Digital Signature Scheme Based on an Elliptic Curve Over the Ring Zn. CRYPTO 1992: 54-65
19EEKazuo Ohta, Tatsuaki Okamoto, Atsushi Fujioka: Secure Bit Commitment Function against Divertibility. EUROCRYPT 1992: 324-340
18EETatsuaki Okamoto, Kouichi Sakurai, Hiroki Shizuya: How Intractable Is the Discrete Logarithm for a General Finite Group? EUROCRYPT 1992: 420-428
17EEKazuo Ohta, Tatsuaki Okamoto: A Digital Multisignature Scheme Based on the Fiat-Shamir Scheme. ASIACRYPT 1991: 139-148
16EETatsuaki Okamoto: An Extensin of Zero-Knowledge Proofs and Its Applications. ASIACRYPT 1991: 368-381
15EEKenji Koyama, Ueli M. Maurer, Tatsuaki Okamoto, Scott A. Vanstone: New Public-Key Schemes Based on Elliptic Curves over the Ring Zn. CRYPTO 1991: 252-266
14EETatsuaki Okamoto, Kouichi Sakurai: Efficient Algorithms for the Construction of Hyperelliptic Cryptosystems. CRYPTO 1991: 267-278
13EETatsuaki Okamoto, Kazuo Ohta: Universal Electronic Cash. CRYPTO 1991: 324-337
12EEAtsushi Fujioka, Tatsuaki Okamoto, Kazuo Ohta: Interactive Bi-Proof Systems and Undeniable Signature Schemes. EUROCRYPT 1991: 243-256
11EEAtsushi Fujioka, Tatsuaki Okamoto, Shoji Miyaguchi: ESIGN: An Efficient Digital Signature Implementation for Smard Cards. EUROCRYPT 1991: 446-457
10EETatsuaki Okamoto, David Chaum, Kazuo Ohta: Direct Zero Knowledge Proofs of Computational Power in Five Rounds. EUROCRYPT 1991: 96-105
9 Alfred Menezes, Scott A. Vanstone, Tatsuaki Okamoto: Reducing Elliptic Curve Logarithms to Logarithms in a Finite Field STOC 1991: 80-89
8EETatsuaki Okamoto, Kazuo Ohta: How to Utilize the Randomness of Zero-Knowledge Proofs. CRYPTO 1990: 456-475
7EEKazuo Ohta, Tatsuaki Okamoto, Kenji Koyama: Membership Authentication for Hierarchical Multigroups Using the Extended Fiat-Shamir Scheme. EUROCRYPT 1990: 446-457
6 Tatsuaki Okamoto: A fast signature scheme based on congruential polynomial operations. IEEE Transactions on Information Theory 36(1): 47-53 (1990)
5EETatsuaki Okamoto, Kazuo Ohta: Disposable Zero-Knowledge Authentications and Their Applications to Untraceable Electronic Cash. CRYPTO 1989: 481-496
4EETatsuaki Okamoto, Kazuo Ohta: Divertible Zero Knowledge Interactive Proofs and Commutative Random Self-Reducibility. EUROCRYPT 1989: 134-148
3EEKazuo Ohta, Tatsuaki Okamoto: A Modification of the Fiat-Shamir Scheme. CRYPTO 1988: 232-243
2EETatsuaki Okamoto: A Digital Multisignature Schema Using Bijective Public-Key Cryptosystems. ACM Trans. Comput. Syst. 6(4): 432-441 (1988)
1 Ichiro Suzuki, Y. Motohashi, Kenichi Taniguchi, Tadao Kasami, Tatsuaki Okamoto: Specification and Verification of Decentralized Daisy Chain Arbiters with omega-Extended Regular Expressions. Theor. Comput. Sci. 43: 277-291 (1986)

Coauthor Index

1Masayuki Abe [46] [47] [49] [51] [80] [81]
2Norio Akagi [79]
3Feng Bao [71]
4David Chaum [10]
5Giovanni Di Crescenzo [37]
6Ivan Damgård [31]
7Tony Eng [26]
8Atsushi Fujioka [11] [12] [19] [20] [22] [46]
9Eiichiro Fujisaki [20] [32] [38] [42] [45] [48] [56] [59]
10Oded Goldreich [31]
11Yongfei Han [39]
12Ryotaro Hayashi [60]
13Tadao Kasami [1]
14Ryo Kashima [63]
15Eike Kiltz [80] [81]
16Kenji Koyama [7] [15]
17Kaoru Kurosawa [25]
18San Ling [71]
19Yoshifumi Manabe [64] [65] [67] [74] [75] [76] [77] [79]
20Ueli M. Maurer [15]
21Alfred Menezes [9] [23]
22Fumiaki Miura [46]
23Shoji Miyaguchi [11]
24Hikaru Morita [62]
25Y. Motohashi [1]
26Waka Nagao [64] [65] [75] [77]
27Ryo Nishimaki [67] [76]
28Miyako Ohkubo [46]
29Kazuo Ohta [3] [4] [5] [7] [8] [10] [12] [13] [17] [19] [22] [29] [44]
30Yusuke Okada [74]
31Eiji Okamoto [72]
32Takeshi Okamoto [72]
33Choonsik Park [25]
34Giuseppe Persiano (Pino Persiano) [28]
35David Pointcheval [54] [55] [56] [59]
36Sihan Qing [39] [57]
37Kouichi Sakurai [14] [18]
38Alfredo De Santis [28]
39Hiroki Shizuya [18]
40Jacques Stern [56] [58] [59]
41Ichiro Suzuki [1]
42Tsuyoshi Takagi [72]
43Katsuyuki Takashima [78]
44Keisuke Tanaka [52] [60]
45Kenichi Taniguchi [1]
46Shigeo Tsujii [25]
47Shigenori Uchiyama [41] [43] [52]
48Scott A. Vanstone [9] [15] [23]
49Huaxiong Wang [71]
50Xiaoyun Wang [73]
51Avi Wigderson [31]
52Chaoping Xing [71]
53Chung-Huang Yang [62]
54Moti Yung (Mordechai M. Yung) [37] [40]
55Jianying Zhou [57]

Colors in the list of coauthors

Copyright © Tue Nov 3 08:52:44 2009 by Michael Ley (ley@uni-trier.de)