KUWAKADO,Hidenori - Faculty of Informatics Department of Informatics

KUWAKADO, Hidenori

Faculty, Department/Institute

Faculty of Informatics Department of Informatics

Academic status (qualification)

Professor Apr. 1,2013

Academic Degrees

Sep. 1999 Kobe University

Research fields	keyword
Information and communication engineering

所属学会・団体名	役職名 (役職在任期間)
The Institute of Electronics ,Information and Communication Engineers
The Institute of Electrical and Electronics Engineers, Inc.
Information Processing Society of Japan

Research Publications

No.	Type of publication	Date of publication (Date of presentation)	Title	Type of research result	Jointly authored or single authored	Publisher and journal name	Volume number
1	Research report21	2017/7/20～2017,07,20,,,	Artificial Metrics of Electric Devices and Their Applications	In-house publication	Co-authored	JOURNAL of INFORMATICS	Vol. 46, pp.1-22
2	Papers1	2017/3～2017,03,00,,,	Secure regenerating codes using linear regenerating codes and the all-or-nothing transform	Academic Journal	Co-author	IEICE TRANS-ACTIONS on Information and Systems	vol.E100-D, no.3, pp.483–495
3	International academic conference8	2016/10～2016,10,00,,,	A pseudorandom-function mode based on Lesamnta-lw and the MDP domain extension and its application		Co-author	NIST Lightweight Cryptography Workshop 2016
4	International academic conference8	2014/12～2014,12,00,,,	A collision attack on a double-block-length compression function instantiated with round- reduced AES-256		Co-author	The 17th International Conference on Information Security and Cryptology (ICISC 2014), Lecture Notes in Computer Science	vol.8949, pp.271–285
5	International academic conference8	2014/10～2014,10,00,,,	Secure regenerating codes using linear MBR/MSR codes and the all-or-nothing transform		Co-author	Proceedings of the 2014 International Symposium on Information Theory and its Applications	pp.221–225
6	International academic conference8	2014～2014,00,00,,,	Forward-secure sequential aggregate message authentication revisited		Co-author	Provable Security, Lecture Notes in Computer Science	vol.8782, pp.87–102
7	International academic conference8	2014～2014,00,00,,,	A block-cipher-based hash function using an MMO-type double-block compression function		Co-author	Provable Security, Lecture Notes in Computer Science	vol.8782, pp.71–86
8	Papers1	2013/12～2013,12,00,,,	Multilane hashing mode suitable for parallel processing	Academic Journal	Co-author	IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences	vol.E96-A, no.12, pp.2434–2442
9	International academic conference8	2013/12～2013,12,00,,,	Hashing mode using a lightweight blockcipher		Co-author	Proceedings of the 14th IMA International Conference on Cryptography and Coding (IMACC 2013), Lecture Notes in Computer Science	vol.8308, pp.213–231
10	International academic conference8	2013/7～2013,07,00,,,	Redactable signature scheme for tree-structured data based on Merkle tree	Other		Proceedings of SECRYPT 2013, 10th International Conference on Security and Cryptography
11	Papers1	2013/4～2013,04,00,,,	Secure regenerating codes based on MSR codes for distributed storage systems	Academic Journal	Co-author	IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences	Vol.J96-A No.4 pp.166-174
12	Papers1	2013/2～2013,02,00,,,	Secure regenerating codes based on Rashmi-Shah-Kumar MBR codes	Academic Journal	Co-author	IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences	Vol.E96-A No.2 pp.635-648,
13	Papers1	2012/9～2012,09,00,,,	Length-preserving CBC enciphering scheme and its security analysis	Academic Journal	Single-Author	IPSJ Journal
14	Papers1	2012/1～2012,01,00,,,	An AES based 256-bit hash function for lightweight applications: Lesamnta-LW	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol.E95-A, no.1, pp.89-99
15	Papers1	2012/1～2012,01,00,,,	Collision resistance of hash functions in a weak ideal cipher model	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol.E95-A, no.1, pp.252-255
16	Papers1	2011/1～2011,01,00,,,	Generalized classes of weak keys on RC4 using predictive state	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol.E94-A, no.1, pp.10-18
17	International academic conference8	2011～2011,00,00,,,	A Lightweight 256-bit Hash Function for Hardware and Low-end Devices: Lesamnta-LW	Other	Co-author	Proceedings of the 13th Annual International Conference on Information Security and Cryptology, ICISC 2010, Lecture Notes in Computer Science	vol. 6584, pp.151-168
18	International academic conference8	2011～2011,00,00,,,	Compression functions using a dedicated blockcipher for lightweight hashing	Other	Co-author	Preproceedings of the 14th Annual International Conference on Information Security and Cryptology
19	Papers1	2010/1～2010,01,00,,,	Fast WEP-key recovery attack using only encrypted IP packets	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol.E93-A, no.1, pp.164-171
20	International academic conference8	2010～2010,00,00,,,	Quantum distinguisher between the 3-round Feistel cipher and the random permutation	Other	Co-author	Proceedings of the 2011 IEEE International Symposium on Information Theory	pp.2682-2685
21	Papers1	2009/10～2009,10,00,,,	Efficient pseudorandom-function modes of a block-cipher-based hash function	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E92-A, no. 10, pp. 2447-2453
22	International academic conference8	2009/8～2009,08,00,,,	Quantum analysis of 2,3-round Feistel schemes	Other	Co-author	Proceedings of the 9th Asian Conference on Quantum Information Science	pp. 39-40
23	Papers1	2009/7～2009,07,00,,,	Differentiability of four prefix-free PGV hash functions	Academic Journal	Co-author	IEICE Electronics Express	vol. 6, no. 13, pp. 955-958
24	Papers1	2009/1～2009,01,00,,,	A chosen-IV key recovery attack on Py and PyPy	Academic Journal	Co-author	IEICE Transactions on Information and Systems	vol. E92-D, no. 1, pp. 32-40
25	International academic conference8	2009～2009,00,00,,,	Pseudorandom-function property of the step-reduced compression functions of SHA-256 and SHA-512	Other	Co-author	Information Security Applications, 9th International Workshop, WISA 2008, Lecture Notes in Computer Science	vol. 5379, pp. 174-189
26	Papers1	2008/10～2008,10,00,,,	Compression functions suitable for the multi-property-preserving transform	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E91-A, no. 10, pp. 2851-2859
27	International academic conference8	2008～2008,00,00,,,	A scheme to base a hash function on a block cipher	Other	Co-author	Preproceedings of SAC (Selected Areas in Cryptography)	pp. 243-256
28	International academic conference8	2008～2008,00,00,,,	Multi-bit revocable network coding scheme for butterfly-like network	Other	Co-author	Proceedings of the 2008 International Symposium on Information Theory and its Applications	pp. 423-428
29	Papers1	2007/10～2007,10,00,,,	Indifferntialbility of single-block-length and rate-1 compression functions	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E90-A, no. 10, pp. 2301-2308
30	International academic conference8	2007/1～2007,01,00,,,	How to break Py and Pypy by a chosen-IV attack	Other	Co-author	Proc. of SASC 2007, The State of the Art of Stream Ciphers	pp. 340-352
31	International academic conference8	2006/10～2006,10,00,,,	Collision-controllable hash function	Other	Co-author	Proc. of the 2006 International Symposium on Information Theory and its Applications	no. Tue2-2-2
32	International academic conference8	2005/12～2005,12,00,,,	Visual cryptographic protocols using the trusted initializer	Other	Co-author	Information and Communications Security, 7th International Conference, ICICS 2005, Lecture Notes in Computer Science	vol. 3783, pp. 112-122
33	Papers1	2005/8～2005,08,00,,,	Secure length-preserving all-or-nothing transform	Academic Journal	Co-author	IPSJ Journal	vol. 46, no. 8, pp. 1843-1851
34	International academic conference8	2004/10～2004,10,00,,,	Signature scheme suitable for related files	Other	Co-author	Proc. of the 2004 International Symposium on Information Theory and its Applications	pp. 134-139
35	Papers1	2004/5～2004,05,00,,,	Size-reduced visual secret sharing scheme	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E87-A, no. 5, pp. 1193-1197
36	Papers1	2003/10～2003,10,00,,,	Efficient relative time-stamping scheme based on the ternary link	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E86-A, no. 10, pp. 2552-2559
37	Papers1	2003/8～2003,08,00,,,	Threshold ring signature scheme based on the curve	Academic Journal	Co-author	IPSJ Journal	vol. 44, no. 8, pp. 2146-2154
38	International academic conference8	2003/6～2003,06,00,,,	Threshold ring signature scheme based on the curve	Other	Co-author	Proc. of the 2003 IEEE International Symposium on Information Theory	p. 139
39	Papers1	2003/5～2003,05,00,,,	Transitive signature scheme for directed trees	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E86-A, no. 5, pp. 1120-1126
40	International academic conference8	2002/10～2002,10,00,,,	Digital signature schemes for information disclosure	Other	Co-author	Proc. of the 2002 International Symposium on Information Theory and its Applications	pp. 551-554
41	Papers1	2002/6～2002,06,00,,,	Polynomial representation of a visual secret sharing scheme	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E85-A, no. 6, pp. 1379-1386
42	Papers1	2002/5～2002,05,00,,,	All-or-nothing transform based on a linear code	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E85-A, no. 5, pp. 1084-1087
43	Papers1	2002/1～2002,01,00,,,	Message authentication for stream	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E85-A, no. 1, pp. 190-193
44	Papers1	2001/10～2001,10,00,,,	Equivalent keys in RC6-32/20/176	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E84-A, no. 10, pp. 2474-2481
45	Papers1	2001/4～2001,04,00,,,	Improvement on the cheater identifiable threshold scheme	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E84-A, no. 4, pp.957-960
46	International academic conference8	2000/11～2000,11,00,,,	Secure digital signature scheme against subliminal channel	Other	Co-author	Proc. of the 2000 International Symposium on Information Theory and its Applications	vol.I, pp. 219-222
47	Papers1	2000/1～2000,01,00,,,	New algorithm for finding preimages in a reduced version of the MD4 compression function	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E83-A, no. 1, pp. 97-100
48	Papers1	1999/10～1999,10,00,,,	New subliminal channel embedded in the ESIGN	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E82-A, no. 10, pp. 2167-2171
49	Papers1	1999/10～1999,10,00,,,	Image size invariant visual cryptography	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E82-A, no. 10, pp. 2172-2177
50	Papers1	1999/1～1999,01,00,,,	On the security of the ElGamal-type signature scheme with small parameters	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E82-A, no. 1, pp. 93-97
51	Papers1	1998/10～1998,10,00,,,	On the security of the improved knapsack cryptosystem	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E81-A, no. 10, pp. 2184-2185
52	International academic conference8	1998/10～1998,10,00,,,	Cryptanalysis with the continued fraction	Other	Co-author	Proc. of the 1998 International Symposium on Information Theory and its Applications	pp. 239-242
53	International academic conference8	1998/9～1998,09,00,,,	Fast algorithm for finding a small root of a quadratic modular equation	Other	Co-author	Proc. of the First International Workshop ISW'97, Lecture notes in Computer Science 1396	pp. 75-81
54	Papers1	1997/1～1997,01,00,,,	Improved elliptic curve methods for factoring and their performance	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E80-A, no. 1, pp. 25-33
55	Papers1	1996/1～1996,01,00,,,	A new RSA-type scheme based on singular cubic curves (y-α x)(y-βx) = x3 (mod n)	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E79-A, no. 1, pp. 49-53
56	Papers1	1995/1～1995,01,00,,,	A new RSA-type scheme based on singular cubic curves y2=x3+bx2 (mod n)	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E78-A, no. 1, pp. 27-33
57	Papers1	1994/10～1994,10,00,,,	Security of RSA-type cryptosystems over elliptic curves against Hastad attack	Academic Journal	Co-author	Electronics Letters	vol. 30, no. 22, pp. 1843-1844
58	Papers1	1994/8～1994,08,00,,,	Efficient cryptosystems over elliptic curves based on a product of form-free primes	Academic Journal	Co-author	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences	vol. E77-A, no. 8, pp. 1309-1318
59	International academic conference8	1994/7～1994,07,00,,,	A new RSA-type cryptosystem over singular elliptic curves	Other	Co-author	Proc. of Applications of Finite Fields	pp. 99-109
60	International academic conference8	2018/10/28～2018/10/312018,10,28,2018,10,31	Parallelizable Message Preprocessing for Merkle-Damgard Hash Functions	Academic Journal	Co-author	2018 International Symposium on Information Theory and Its Applications
61	International academic conference8	2018/12/10～2018/12/132018,12,10,2018,12,13	Secret Sharing Schemes Using Modulo-2^{m} Arithmetic Operations	Academic Journal	Single-Author	The 2018 IEEE Conference on Dependable and Secure Computing
62	International academic conference8	2019/12～2019,12,00,,,	Authenticated Encryption Based on Lesamnta-LW Hashing Mode	Academic Journal	Co-author	Information Security and Cryptology - ICISC 2019	Lecture Notes in Computer Science, vol 11975, pp 52-69
63	Academic presentation7	2020/1～2020,01,00,,,	White-Box Symmetric Cipher Using Quantum Memory	Other	Co-author	Proceedings of 2020 Symposium on Cryptography and Information Security	2B2-4

Research reportArtificial Metrics of Electric Devices and Their ApplicationsUnrefereedIn-house publicationCo-authoredKUWAKADO,Hidenori;HORII, Yasushi;KOBAYASHI, Takashi;KAMBARA, Tomoyadevice fingerprint;artificial metrics;physical unclonable functionJOURNAL of INFORMATICSVol. 46, pp.1-222017/7/20～Faculty of Informatics, Kansai UniversityAn Identification of artificial objects is lately receiving much attention for two reasons: the problem of counterfeiting of artificial objects, such as goods that use brand names, in international trade and the necessity of achieving a secure communication in the Internet of Things (IoT), which is a network of artificial objects that are embedded with network connectivity. To identify artificial objects, “fingerprints” of artificial objects, introduced during manufacturing and non-separable characteristics from artificial objects themselves, have to be discovered. This article reports fingerprints for acceleration sensors, flash memory, non-Foster matching circuits and elemental techniques for identifying fingerprints or measuring fingerprints with stability. This article demonstrates an encoding method for recording fingerprints securely in a distributed storage system.

PapersSecure regenerating codes using linear regenerating codes and the all-or-nothing transformIn refereedAcademic JournalCo-authorH. Kuwakado;M. KuriharaIEICE TRANS-ACTIONS on Information and Systemsvol.E100-D, no.3, pp.483–4952017/3～10.1587/transinf.2016EDP7220

International academic conferenceA pseudorandom-function mode based on Lesamnta-lw and the MDP domain extension and its applicationIn refereedCo-authorS. Hirose;H. Kuwakado;H. YoshidaNIST Lightweight Cryptography Workshop 20162016/10～

Magazine articleIn refereedOtherSingle-Author2016/7～

Magazine articleIn refereedOtherSingle-Author2016/6～

PapersIn refereedAcademic JournalCo-author2015/2～

International academic conferenceA collision attack on a double-block-length compression function instantiated with round- reduced AES-256In refereedCo-authorJ. Chen;S. Hirose;H. Kuwakado;A. MiyajiThe 17th International Conference on Information Security and Cryptology (ICISC 2014), Lecture Notes in Computer Sciencevol.8949, pp.271–2852014/12～10.1007/978-3-319-15943- 0 17

International academic conferenceSecure regenerating codes using linear MBR/MSR codes and the all-or-nothing transform In refereedCo-authorH. Kuwakado;M. KuriharaProceedings of the 2014 International Symposium on Information Theory and its Applications pp.221–2252014/10～978-4-88552-291-8

International academic conferenceForward-secure sequential aggregate message authentication revisitedIn refereedCo-authorS. Hirose;H. KuwakadoProvable Security, Lecture Notes in Computer Sciencevol.8782, pp.87–1022014～10.1007/978-3-319-12475-9978-3-319-12474-2 (Print), 978-3-319-12475-9 (Online)

International academic conferenceA block-cipher-based hash function using an MMO-type double-block compression functionIn refereedCo-authorS. Hirose;H. KuwakadoProvable Security, Lecture Notes in Computer Sciencevol.8782, pp.71–862014～10.1007/978-3-319-12475-9978-3-319-12474-2 (Print), 978-3-319-12475-9 (Online)

PapersMultilane hashing mode suitable for parallel processingIn refereedAcademic JournalCo-authorH. Kuwakado;S. HiroseIEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciencesvol.E96-A, no.12, pp.2434–24422013/12～10.1587/transfun.E96.A.2434

International academic conferenceHashing mode using a lightweight blockcipherIn refereedCo-authorH. Kuwakado;S. HiroseProceedings of the 14th IMA International Conference on Cryptography and Coding (IMACC 2013), Lecture Notes in Computer Sciencevol.8308, pp.213–2312013/12～10.1007/978-3-642-45239-09783642452390 (online), 9783642452383

International academic conferenceRedactable signature scheme for tree-structured data based on Merkle treeOtherShoichi Hirose;Hidenori KuwakadoProceedings of SECRYPT 2013, 10th International Conference on Security and Cryptography2013/7～

PapersSecure regenerating codes based on MSR codes for distributed storage systemsAcademic JournalCo-authorMasazumi Kurihara;Hidenori KuwakadoIEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer SciencesVol.J96-A No.4 pp.166-1742013/4～

PapersSecure regenerating codes based on Rashmi-Shah-Kumar MBR codesAcademic JournalCo-authorMasazumi Kurihara;Hidenori KuwakadoIEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer SciencesVol.E96-A No.2 pp.635-648,2013/2～10.1587/transfun.E96.A.635

PapersLength-preserving CBC enciphering scheme and its security analysisIn refereedAcademic JournalSingle-AuthorH. KuwakadoIPSJ Journal2012/9～

PapersAn AES based 256-bit hash function for lightweight applications: Lesamnta-LWIn refereedAcademic JournalCo-authorS. Hirose;K. Ideguchi;H. Kuwakado;T. Owada;B. Preneel;H. YoshidaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol.E95-A, no.1, pp.89-992012/1～

PapersCollision resistance of hash functions in a weak ideal cipher modelIn refereedAcademic JournalCo-authorS. Hirose;H. KuwakadoIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol.E95-A, no.1, pp.252-2552012/1～

PapersGeneralized classes of weak keys on RC4 using predictive stateIn refereedAcademic JournalCo-authorR. Teramura;T. Ohigashi;H. Kuwakado;M. MoriiIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol.E94-A, no.1, pp.10-182011/1～

International academic conferenceA Lightweight 256-bit Hash Function for Hardware and Low-end Devices: Lesamnta-LWIn refereedOtherCo-authorS. Hirose;K. Ideguchi;H. Kuwakado;T. Owada;B. Preneel;H. YoshidaProceedings of the 13th Annual International Conference on Information Security and Cryptology, ICISC 2010, Lecture Notes in Computer Sciencevol. 6584, pp.151-1682011～

International academic conferenceCompression functions using a dedicated blockcipher for lightweight hashingIn refereedOtherCo-authorS. Hirose;H. Kuwakado;H. YoshidaPreproceedings of the 14th Annual International Conference on Information Security and Cryptology2011～

PapersFast WEP-key recovery attack using only encrypted IP packetsIn refereedAcademic JournalCo-authorR. Teramura;Y. Asakura;T. Ohigashi;H. Kuwakado;M. MoriiIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol.E93-A, no.1, pp.164-1712010/1～

International academic conferenceQuantum distinguisher between the 3-round Feistel cipher and the random permutationIn refereedOtherCo-authorH. Kuwakado;M. MoriiProceedings of the 2011 IEEE International Symposium on Information Theorypp.2682-26852010～

PapersEfficient pseudorandom-function modes of a block-cipher-based hash functionIn refereedAcademic JournalCo-authorS. Hirose;H. KuwakadoIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E92-A, no. 10, pp. 2447-24532009/10～

PapersIn refereedAcademic JournalCo-author2009/9～

International academic conferenceQuantum analysis of 2,3-round Feistel schemesIn refereedOtherCo-authorH. Kuwakado;M. MoriiProceedings of the 9th Asian Conference on Quantum Information Sciencepp. 39-402009/8～

PapersDifferentiability of four prefix-free PGV hash functionsIn refereedAcademic JournalCo-authorH. Kuwakado;S. HiroseIEICE Electronics Expressvol. 6, no. 13, pp. 955-9582009/7～

PapersA chosen-IV key recovery attack on Py and PyPyIn refereedAcademic JournalCo-authorT. Isobe;T. Ohigashi;H. Kuwakado;M. MoriiIEICE Transactions on Information and Systemsvol. E92-D, no. 1, pp. 32-402009/1～

International academic conferencePseudorandom-function property of the step-reduced compression functions of SHA-256 and SHA-512In refereedOtherCo-authorH. Kuwakado;S. HiroseInformation Security Applications, 9th International Workshop, WISA 2008, Lecture Notes in Computer Sciencevol. 5379, pp. 174-1892009～

PapersCompression functions suitable for the multi-property-preserving transformIn refereedAcademic JournalCo-authorH. Kuwakado;M. MoriiIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E91-A, no. 10, pp. 2851-28592008/10～

International academic conferenceA scheme to base a hash function on a block cipherIn refereedOtherCo-authorS. Hirose;H. KuwakadoPreproceedings of SAC (Selected Areas in Cryptography)pp. 243-2562008～

International academic conferenceMulti-bit revocable network coding scheme for butterfly-like networkIn refereedOtherCo-authorH. Kuwakado;M. MoriiProceedings of the 2008 International Symposium on Information Theory and its Applicationspp. 423-4282008～

PapersIndifferntialbility of single-block-length and rate-1 compression functionsIn refereedAcademic JournalCo-authorH. Kuwakado;M. MoriiIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E90-A, no. 10, pp. 2301-23082007/10～

International academic conferenceHow to break Py and Pypy by a chosen-IV attackIn refereedOtherCo-authorT. Isobe;T. Ohigashi;H. Kuwakado;M. MoriiProc. of SASC 2007, The State of the Art of Stream Cipherspp. 340-3522007/1～

International academic conferenceCollision-controllable hash functionIn refereedOtherCo-authorH. Kuwakado;M. MoriiProc. of the 2006 International Symposium on Information Theory and its Applicationsno. Tue2-2-22006/10～

International academic conferenceVisual cryptographic protocols using the trusted initializerIn refereedOtherCo-authorH. Kuwakado;M. Morii;H. TanakaInformation and Communications Security, 7th International Conference, ICICS 2005, Lecture Notes in Computer Sciencevol. 3783, pp. 112-1222005/12～

PapersSecure length-preserving all-or-nothing transformIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIPSJ Journalvol. 46, no. 8, pp. 1843-18512005/8～

International academic conferenceSignature scheme suitable for related filesIn refereedOtherCo-authorH. Kuwakado;H. TanakaProc. of the 2004 International Symposium on Information Theory and its Applicationspp. 134-1392004/10～

PapersSize-reduced visual secret sharing schemeIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E87-A, no. 5, pp. 1193-11972004/5～

PapersEfficient relative time-stamping scheme based on the ternary linkIn refereedAcademic JournalCo-authorY. Igarashi;H. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E86-A, no. 10, pp. 2552-25592003/10～

PapersThreshold ring signature scheme based on the curveIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIPSJ Journalvol. 44, no. 8, pp. 2146-21542003/8～

International academic conferenceThreshold ring signature scheme based on the curveIn refereedOtherCo-authorH. Kuwakado;H. TanakaProc. of the 2003 IEEE International Symposium on Information Theoryp. 1392003/6～

PapersTransitive signature scheme for directed treesIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E86-A, no. 5, pp. 1120-11262003/5～

International academic conferenceDigital signature schemes for information disclosureIn refereedOtherCo-authorH. Kuwakado;H. TanakaProc. of the 2002 International Symposium on Information Theory and its Applicationspp. 551-5542002/10～

PapersPolynomial representation of a visual secret sharing schemeIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E85-A, no. 6, pp. 1379-13862002/6～

PapersAll-or-nothing transform based on a linear codeIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E85-A, no. 5, pp. 1084-10872002/5～

PapersMessage authentication for streamIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E85-A, no. 1, pp. 190-1932002/1～

PapersEquivalent keys in RC6-32/20/176In refereedAcademic JournalCo-authorH. Mizuno;H. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E84-A, no. 10, pp. 2474-24812001/10～

PapersImprovement on the cheater identifiable threshold schemeIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E84-A, no. 4, pp.957-9602001/4～

International academic conferenceSecure digital signature scheme against subliminal channelIn refereedOtherCo-authorH. Kuwakado;H. TanakaProc. of the 2000 International Symposium on Information Theory and its Applicationsvol.I, pp. 219-2222000/11～

PapersNew algorithm for finding preimages in a reduced version of the MD4 compression functionIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E83-A, no. 1, pp. 97-1002000/1～

PapersNew subliminal channel embedded in the ESIGNIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E82-A, no. 10, pp. 2167-21711999/10～

PapersImage size invariant visual cryptographyIn refereedAcademic JournalCo-authorR. Ito;H. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E82-A, no. 10, pp. 2172-21771999/10～

PapersSingle-Author1999/9～

PapersOn the security of the ElGamal-type signature scheme with small parametersIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E82-A, no. 1, pp. 93-971999/1～

BookMonographCo-authored chapter1998/10～

PapersOn the security of the improved knapsack cryptosystemIn refereedAcademic JournalCo-authorH. Kuwakado;H. TanakaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E81-A, no. 10, pp. 2184-21851998/10～

International academic conferenceCryptanalysis with the continued fractionIn refereedOtherCo-authorH. Kuwakado;H. TanakaProc. of the 1998 International Symposium on Information Theory and its Applicationspp. 239-2421998/10～

International academic conferenceFast algorithm for finding a small root of a quadratic modular equationIn refereedOtherCo-authorH. Kuwakado;H. TanakaProc. of the First International Workshop ISW'97, Lecture notes in Computer Science 1396pp. 75-811998/9～

PapersImproved elliptic curve methods for factoring and their performanceIn refereedAcademic JournalCo-authorH. Kuwakado;K. KoyamaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E80-A, no. 1, pp. 25-331997/1～

PapersA new RSA-type scheme based on singular cubic curves (y-α x)(y-βx) = x3 (mod n)In refereedAcademic JournalCo-authorH. Kuwakado;K. KoyamaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E79-A, no. 1, pp. 49-531996/1～

PapersA new RSA-type scheme based on singular cubic curves y2=x3+bx2 (mod n)In refereedAcademic JournalCo-authorH. Kuwakado;K. Koyama;Y. TsuruokaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E78-A, no. 1, pp. 27-331995/1～

PapersSecurity of RSA-type cryptosystems over elliptic curves against Hastad attackIn refereedAcademic JournalCo-authorH. Kuwakado;K. KoyamaElectronics Lettersvol. 30, no. 22, pp. 1843-18441994/10～

PapersEfficient cryptosystems over elliptic curves based on a product of form-free primesIn refereedAcademic JournalCo-authorH. Kuwakado;K. KoyamaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. E77-A, no. 8, pp. 1309-13181994/8～

International academic conferenceA new RSA-type cryptosystem over singular elliptic curvesIn refereedOtherCo-authorH. Kuwakado;K. KoyamaProc. of Applications of Finite Fieldspp. 99-1091994/7～

PapersIn refereedAcademic JournalCo-authoredHIROSE, Shoichi;KUWAKADO, Hidenori;YOSHIDA, Hirotaka2018/1～

International academic conferenceParallelizable Message Preprocessing for Merkle-Damgard Hash FunctionsIn refereedAcademic JournalCo-authorKUWAKADO,Hidenori;HIROSE,Shoichi;MAMBO,Masahiro2018 International Symposium on Information Theory and Its Applications2018/10/28～2018/10/31Since well-known hash functions sequentially process a message, the time for computing a digest strongly depends on the performance of a single processor. Even if multi-core processors are available, it is difficult to reduce the time. This paper focuses on designing a message preprocessing that can fully utilize multi-core processors. Since our message preprocessing can be efficiently computed by massively parallel processing, it contributes to reduce the time for computing a digest. The experiments using graphics processing units show that our message preprocessing improves the throughput for computing a digest.

International academic conferenceSecret Sharing Schemes Using Modulo-2^{m} Arithmetic OperationsIn refereedAcademic JournalSingle-AuthorKUWAKADO,HidenoriThe 2018 IEEE Conference on Dependable and Secure Computing2018/12/10～2018/12/13Cloud services using secret sharing schemes have been launched recently. Since secret sharing schemes have been usually achieved over a finite field, the throughput for sharing and reconstructing a secret depends on the implementation of finite field operations. However, almost all the CPUs do not support finite-field operations as primary instructions. We study k-outof-n secret sharing schemes using the linear transform over Z_{2^m}. The advantage of the linear transform over Z_{2^m} is that almost all the CPUs support a modulo-2^m addition, a modulo-2^m subtraction, and a modulo-2^m multiplication as primary instructions. We show the conditions of an encoding matrix to achieve the k-out-of-n secret sharing scheme based on the linear transform over Z_{2^m}. The conditions suggest that the k-out-of-n secret sharing scheme over Z_{2^m} is non-ideal. We also show the maximum size of a secret if the Vandermonde matrix whose all the elements are a power of two is used as the encoding matrix.

PapersIn refereedAcademic JournalCo-authoredKUWAKADO,Hidenori;Shoichi Hirose;Masahiro Mambo2018/10～

PapersIn refereedAcademic JournalSingle-AuthorKUWAKADO,Hidenori2018/12～10.1109/DESEC.2018.8625126

International academic conferenceAuthenticated Encryption Based on Lesamnta-LW Hashing ModeIn refereedAcademic JournalCo-authorShoichi Hirose;Hidenori Kuwakado;Hirotaka YoshidaInformation Security and Cryptology - ICISC 2019Lecture Notes in Computer Science, vol 11975, pp 52-692019/12～

Academic presentationWhite-Box Symmetric Cipher Using Quantum MemoryUnrefereedOtherCo-authorHidenori Kuwakado;Shoichi Hirose;Masahiro MamboProceedings of 2020 Symposium on Cryptography and Information Security2B2-42020/1～