IEICE SEARCH SYSTEM

Kouichi SAKURAI

General Fault Attacks on Multivariate Public Key Cryptosystems Yasufumi HASHIMOTO Tsuyoshi TAKAGI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2013/01/01 Vol. E96-A No. 1 pp. 196-205 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Implementation Keyword: post-quantum cryptography, multivariate public-key cryptosystems, fault attacks,
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Securing Provenance of Distributed Processes in an Untrusted Environment Amril SYALIM Takashi NISHIDE Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2012/07/01 Vol. E95-D No. 7 pp. 1894-1907 Type of Manuscript: PAPER Category: Data Engineering, Web Information Systems Keyword: provenance security, access control model, database encryption,
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Efficient Context-Sensitive Intrusion Detection Based on State Transition Table Jingyu HUA Mingchu LI Yizhi REN Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2011/01/01 Vol. E94-A No. 1 pp. 255-264 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Network Security Keyword: intrusion detection, state transition table, static analysis, stack walks,
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Improved Subset Difference Method with Ternary Tree Kazuhide FUKUSHIMA Shinsaku KIYOMOTO Toshiaki TANAKA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2010/11/01 Vol. E93-A No. 11 pp. 2034-2044 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Cryptography and Information Security Keyword: broadcast encryption, subset difference method, ternary tree,
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Towards a Fairness Multimedia Transmission Using Layered-Based Multicast Protocol Heru SUKOCO Yoshiaki HORI Hendrawan Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2010/11/01 Vol. E93-D No. 11 pp. 2953-2961 Type of Manuscript: Special Section PAPER (Special Section on Architectures, Protocols, and Applications for the Future Internet) Category: Keyword: TCP friendly, Receiver-driven Layered Multicast, network simulator, Pareto, quality of service, jitter, throughput, packet loss ratio, fairness, convergence time,
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Analysis of Existing Privacy-Preserving Protocols in Domain Name System Fangming ZHAO Yoshiaki HORI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2010/05/01 Vol. E93-D No. 5 pp. 1031-1043 Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security) Category: INVITED Keyword: domain name system (DNS), privacy, private information retrieval, random noise,
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ESS-FH: Enhanced Security Scheme for Fast Handover in Hierarchical Mobile IPv6 Ilsun YOU Jong-Hyouk LEE Kouichi SAKURAI Yoshiaki HORI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2010/05/01 Vol. E93-D No. 5 pp. 1096-1105 Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security) Category: Keyword: F-HMIPv6 security, CGA, BAN-logic,
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FOREWORD Guojun WANG Laurence T.YANG Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2010/03/01 Vol. E93-D No. 3 pp. 409-410 Type of Manuscript: FOREWORD Category: Keyword:
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An Enhanced Security Protocol for Fast Mobile IPv6 Ilsun YOU Kouichi SAKURAI Yoshiaki HORI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2009/10/01 Vol. E92-D No. 10 pp. 1979-1982 Type of Manuscript: Special Section LETTER (Special Section on New Technologies and their Applications of the Internet) Category: DRM and Security Keyword: FMIPv6 security, MIPv6, secure neighbor discovery, cryptographically generated address, BAN-logic,
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Distributed Noise Generation for Density Estimation Based Clustering without Trusted Third Party Chunhua SU Feng BAO Jianying ZHOU Tsuyoshi TAKAGI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/08/01 Vol. E92-A No. 8 pp. 1868-1871 Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: data clustering, privacy-preserving, random data perturbation,
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A Security Analysis on Kempf-Koodli's Security Scheme for Fast Mobile IPv6 Ilsun YOU Kouichi SAKURAI Yoshiaki HORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/06/01 Vol. E92-B No. 6 pp. 2287-2290 Type of Manuscript: LETTER Category: Internet Keyword: Fast Mobile IPv6 security, SEND protocol, CGA, BAN-logic,
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Modeling Security Bridge Certificate Authority Architecture Yizhi REN Mingchu LI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/06/01 Vol. E92-A No. 6 pp. 1544-1547 Type of Manuscript: LETTER Category: Cryptography and Information Security Keyword: PKI, bridge certificate authority, security,
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FOREWORD Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2009/05/01 Vol. E92-D No. 5 pp. 765-765 Type of Manuscript: FOREWORD Category: Keyword:
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An Adaptive Reputation-Based Algorithm for Grid Virtual Organization Formation Yongrui CUI Mingchu LI Yizhi REN Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/05/01 Vol. E92-A No. 5 pp. 1339-1346 Type of Manuscript: PAPER Category: Graphs and Networks Keyword: reputation, virtual organization formation, grid, collusion attacks,
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A New Secret Sharing Scheme Based on the Multi-Dealer Cheng GUO Mingchu LI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/05/01 Vol. E92-A No. 5 pp. 1373-1378 Type of Manuscript: LETTER Category: Cryptography and Information Security Keyword: secret sharing, multi-dealer, factoring problem, discrete logarithm, threshold scheme,
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Security and Correctness Analysis on Privacy-Preserving k-Means Clustering Schemes Chunhua SU Feng BAO Jianying ZHOU Tsuyoshi TAKAGI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/04/01 Vol. E92-A No. 4 pp. 1246-1250 Type of Manuscript: LETTER Category: Cryptography and Information Security Keyword: privacy-preserving, k-means clustering, security analysis,
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Reliable Key Distribution Scheme for Lossy Channels Ryuzou NISHI Yoshiaki HORI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2008/05/01 Vol. E91-D No. 5 pp. 1485-1488 Type of Manuscript: Special Section LETTER (Special Section on Information and Communication System Security) Category: Key Management Keyword: key management, key distribution, wireless communication systems, power line communication systems,
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Toward a Scalable Visualization System for Network Traffic Monitoring Erwan LE MALECOT Masayoshi KOHARA Yoshiaki HORI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2008/05/01 Vol. E91-D No. 5 pp. 1300-1310 Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security) Category: Network Security Keyword: visualization, interactivity, network, monitoring, security,
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Analysis of Program Obfuscation Schemes with Variable Encoding Technique Kazuhide FUKUSHIMA Shinsaku KIYOMOTO Toshiaki TANAKA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2008/01/01 Vol. E91-A No. 1 pp. 316-329 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Cryptanalysis Keyword: program obfuscation, variable encoding technique, analysis,
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On Effectiveness of Clock Control in Stream Ciphers Shinsaku KIYOMOTO Kazuhide FUKUSHIMA Toshiaki TANAKA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2007/09/01 Vol. E90-A No. 9 pp. 1780-1787 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Keyword: stream cipher, clock control, irregular clocking,
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Simple Power Analysis on Fast Modular Reduction with Generalized Mersenne Prime for Elliptic Curve Cryptosystems Yasuyuki SAKAI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2006/01/01 Vol. E89-A No. 1 pp. 231-237 Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security) Category: Side Channel Analysis Keyword: side channel analysis, elliptic curve cryptosystem, modular reduction, generalized Mersenne prime, unified code,
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Experimental Analysis of Guess-and-Determine Attacks on Clock-Controlled Stream Ciphers Shinsaku KIYOMOTO Toshiaki TANAKA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/10/01 Vol. E88-A No. 10 pp. 2778-2791 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Cryptography and Information Security Keyword: stream cipher, Guess-and-Determine attack, AA5, clock control,
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Side Channel Cryptanalysis on XTR Public Key Cryptosystem Dong-Guk HAN Tetsuya IZU Jongin LIM Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/05/01 Vol. E88-A No. 5 pp. 1214-1223 Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: XTR public key cryptosystem, side channel attacks, SPA, data-bit DPA, address-bit DPA, doubling attack, refined power analysis, zero-value attack,
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Procedural Constraints in the Extended RBAC and the Coloured Petri Net Modeling Wook SHIN Jeong-Gun LEE Hong Kook KIM Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/01/01 Vol. E88-A No. 1 pp. 327-330 Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security) Category: Keyword: Coloured Petri Net, access control, role, behavior,
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PGV-Style Block-Cipher-Based Hash Families and Black-Box Analysis Wonil LEE Mridul NANDI Palash SARKAR Donghoon CHANG Sangjin LEE Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/01/01 Vol. E88-A No. 1 pp. 39-48 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Symmetric Key Cryptography Keyword: hash function, block cipher, black-box model, provable security,
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A Collaborative Role-Based Access Control for Trusted Operating Systems in Distributed Environment Hyung-Chan KIM R.S. RAMAKRISHNA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/01/01 Vol. E88-A No. 1 pp. 270-279 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Application Keyword: role based access control, multi-domain security, trusted operating systems, distributed systems security,
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On the Vulnerability of Exponent Recodings for the Exponentiation against Side Channel Attacks Yasuyuki SAKAI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/01/01 Vol. E88-A No. 1 pp. 154-160 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Tamper-Resistance Keyword: side channel attack, exponent recoding, RSA cryptosystems, elliptic curve cryptosystems,
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Proposal and Analysis of a Distributed Online Certificate Status Protocol with Low Communication Cost Satoshi KOGA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/01/01 Vol. E88-A No. 1 pp. 247-254 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Application Keyword: Public Key Infrastructure, Online Certificate Status Protocol, distributed OCSP, key-insulated signature scheme,
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FOREWORD Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/05/01 Vol. E87-A No. 5 pp. 977-977 Type of Manuscript: FOREWORD Category: Keyword:
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Analysis and Design for Private Message Board Systems Kenji IMAMOTO Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/01/01 Vol. E87-A No. 1 pp. 204-211 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Applications Keyword: message board, certified e-mail, privacy, anonymity, notice board, Send-and-Forget,
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A Simple Power Attack on a Randomized Addition-Subtraction Chains Method for Elliptic Curve Cryptosystems Katsuyuki OKEYA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2003/05/01 Vol. E86-A No. 5 pp. 1171-1180 Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: elliptic curve cryptosystems, side channel attacks, randomized addition-subtraction chains countermeasure, SPA attack, timing attack,
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An Efficient Representation of Scalars for Simultaneous Elliptic Scalar Multiplication Yasuyuki SAKAI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2003/05/01 Vol. E86-A No. 5 pp. 1135-1146 Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: elliptic curve cryptosystems, scalar multiplication,
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Use of Montgomery Trick in Precomputation of Multi-Scalar Multiplication in Elliptic Curve Cryptosystems Katsuyuki OKEYA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2003/01/01 Vol. E86-A No. 1 pp. 98-112 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Asymmetric Ciphers Keyword: elliptic curve cryptography, multi-scalar multiplication, precomputation, Montgomery trick, simultaneous,
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Speeding Up Elliptic Scalar Multiplication Using Multidoubling Yasuyuki SAKAI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/05/01 Vol. E85-A No. 5 pp. 1075-1083 Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: elliptic curve cryptosystem, scalar multiplication, Montgomery form, multidoubling, fast implementation,
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A Scalar Multiplication Algorithm with Recovery of the y-Coordinate on the Montgomery Form and Analysis of Efficiency for Elliptic Curve Cryptosystems Katsuyuki OKEYA Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/01/01 Vol. E85-A No. 1 pp. 84-93 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: elliptic curve cryptosystem, Montgomery form, fast scalar multiplication, y-coordinate recovery,
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On Distributed Cryptographic Protocols for Threshold RSA Signing and Decrypting with No Dealer Shingo MIYAZAKI Kouichi SAKURAI Moti YUNG
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2001/05/01 Vol. E84-A No. 5 pp. 1177-1183 Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: distributed cryptosystem, threshold RSA, no dealer, threshold signature, threshold decryption,
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A Theory of Demonstrating Program Result-Correctness with Cryptographic Applications Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2001/01/01 Vol. E84-D No. 1 pp. 4-14 Type of Manuscript: INVITED SURVEY PAPER Category: Keyword: zero-knowledge proof, program checking, graph isomorphism, quadratic residuosity,
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Efficient Scalar Multiplications on Elliptic Curves with Direct Computations of Several Doublings Yasuyuki SAKAI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2001/01/01 Vol. E84-A No. 1 pp. 120-129 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: elliptic curve cryptosystem, scalar multiplication, window method, coordinate system, implementation,
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On the Practical Performance of Hyperelliptic Curve Cryptosystems in Software Implementation Yasuyuki SAKAI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/04/20 Vol. E83-A No. 4 pp. 692-703 Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: hyperelliptic curve cryptosystem, efficient implementation, jacobian, lagrange reduction,
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A Progress Report on Lattice Based Public-Key Cryptosystems -- Theoretical Security versus Practical Cryptanalysis -- Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2000/03/20 Vol. E83-D No. 3 pp. 570-579 Type of Manuscript: INVITED SURVEY PAPER Category: Parallel and Distributed Algorithms Keyword: public-key cryptosystems, Lattice reduction problems, LLL-algorithm, Cryptanalysis,
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A Practical Off-Line Digital Money System with Partially Blind Signatures Based on the Discrete Logarithm Problem Shingo MIYAZAKI Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/01/20 Vol. E83-A No. 1 pp. 106-108 Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security) Category: Keyword: partially blind signature, discrete logarithm, untraceable electronic money, key certificate,
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On Non-Pseudorandomness from Block Ciphers with Provable Immunity Against Linear Cryptanalysis Kouichi SAKURAI Yuliang ZHENG
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1997/01/20 Vol. E80-A No. 1 pp. 19-24 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: block cipher, cryptography, Data Encryption Standard, differential cryptanalysis, linear cryptanalysis, pseudorandom permutation, security, secret-key block cipher,
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On the Complexity of the Discrete Logarithm for a General Finite Group Tatsuaki OKAMOTO Kouichi SAKURAI Hiroki SHIZUYA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1996/01/20 Vol. E79-A No. 1 pp. 61-65 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: discrete logarithm, computational complexity, cryptography,
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Subliminal Channels for Transferring Signatures: Yet Another Cryptographic Primitive Kouichi SAKURAI Toshiya ITOH
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1994/01/20 Vol. E77-A No. 1 pp. 31-38 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: subliminal channels, digital signatures, Fiat-Shamir scheme,
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Constant Round Perfect ZKIP of Computational Ability Toshiya ITOH Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1993/07/20 Vol. E76-A No. 7 pp. 1225-1233 Type of Manuscript: PAPER Category: Information Security and Cryptography Keyword: zero-knowledge interactive proof systems, computational ability, possession of knowledge,
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A Characterization of Languages in Constant Round Perfect Zero-Knowledge Interactive Proofs Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1993/04/20 Vol. E76-A No. 4 pp. 546-554 Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: interactive proof system, perfect zero-knowledge, honest verifier zero-knowledge, Blum integer,
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Practical Consequences of the Discrepancy between Zero-Knowledge Protocols and Their Parallel Execution Kouichi SAKURAI Toshiya ITOH
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1993/01/20 Vol. E76-A No. 1 pp. 14-22 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: zero-knowledge interactive proof system, the Fiat-Shamir scheme, no-transferable information,
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On the Complexity of Constant Round ZKIP of Possession of Knowledge Toshiya ITOH Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1993/01/20 Vol. E76-A No. 1 pp. 31-39 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: zero-knowledge interactive proof system, possession of knowledge, probabilistic polynomial time algorithm,
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Language Membership versus Possession of Knowledge in Constant Round ZKIP Kouichi SAKURAI Toshiya ITOH
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1991/08/20 Vol. E74-A No. 8 pp. 2118-2123 Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security) Category: Keyword:
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On the Complexity of Hyperelliptic Discrete Logarithm Problem Hiroki SHIZUYA Toshiya ITOH Kouichi SAKURAI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1991/08/20 Vol. E74-A No. 8 pp. 2129-2135 Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security) Category: Keyword:
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