IEICE Trans

Takanori ISOBE

Applying Byte-Shuffling to CLEFIA-Type Structure Kazuto SHIMIZU Kosei SAKAMOTO Takanori ISOBE
Publication: Publication Date: 2022/03/01 Vol. E105-A No. 3 pp. 268-277 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: block cipher, GFN, CLEFIA, byte-shuffling, active S-box,
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Design of a Linear Layer for a Block Cipher Based on Type-2 Generalized Feistel Network with 32 Branches Kosei SAKAMOTO Kazuhiko MINEMATSU Nao SHIBATA Maki SHIGERI Hiroyasu KUBO Takanori ISOBE
Publication: Publication Date: 2022/03/01 Vol. E105-A No. 3 pp. 278-288 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: Type-2 Generalized Feistel Network, permutation, MILP,
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A Proof of Work Based on Key Recovery Problem of Cascade Block Ciphers with ASIC Resistance Takaki ASANUMA Takanori ISOBE
Publication: Publication Date: 2022/02/01 Vol. E105-D No. 2 pp. 248-255 Type of Manuscript: Special Section PAPER (Special Section on Blockchain Systems and Applications) Category: Keyword: blockchain, Proof of Work, cascade block ciphers, key recovery problem,
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Practical Integral Distinguishers on SNOW 3G and KCipher-2 Jin HOKI Kosei SAKAMOTO Kazuhiko MINEMATSU Takanori ISOBE
Publication: Publication Date: 2021/11/01 Vol. E104-A No. 11 pp. 1603-1611 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: stream cipher, SNOW 3G, KCipher-2, integral attack, division property, MILP,
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Virtual Vault: A Practical Leakage Resilient Scheme Using Space-Hard Ciphers Yuji KOIKE Takuya HAYASHI Jun KURIHARA Takanori ISOBE
Publication: Publication Date: 2021/01/01 Vol. E104-A No. 1 pp. 182-189 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: leakage-resilient scheme, space-hard cipher, block cipher, space hardness, network monitoring,
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MILP-Aided Security Evaluation of Differential Attacks on KCipher-2 Jin HOKI Kosei SAKAMOTO Fukang LIU Kazuhiko MINEMATSU Takanori ISOBE
Publication: Publication Date: 2021/01/01 Vol. E104-A No. 1 pp. 203-212 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: stream cipher, KCipher-2, differential attack, active S-box, MILP,
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Further Results on Efficient Implementations of Block Cipher Linear Layers Subhadeep BANIK Yuki FUNABIKI Takanori ISOBE
Publication: Publication Date: 2021/01/01 Vol. E104-A No. 1 pp. 213-225 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: lightweight, MDS matrices, straight line programs,
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Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure Kosei SAKAMOTO Kazuhiko MINEMATSU Nao SHIBATA Maki SHIGERI Hiroyasu KUBO Yuki FUNABIKI Andrey BOGDANOV Sumio MORIOKA Takanori ISOBE
Publication: Publication Date: 2020/12/01 Vol. E103-A No. 12 pp. 1629-1639 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: twekakble block cipher, generalized feistel structure, TWINE, MILP,
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Preimage Attacks on Reduced Troika with Divide-and-Conquer Methods Fukang LIU Takanori ISOBE
Publication: Publication Date: 2020/11/01 Vol. E103-A No. 11 pp. 1260-1273 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: hash function, Troika, (second) preimage, guess-and-determine, divide-and-conquer, MILP,
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Key-Recovery Security of Single-Key Even-Mansour Ciphers Takanori ISOBE Kyoji SHIBUTANI
Publication: Publication Date: 2020/07/01 Vol. E103-A No. 7 pp. 893-905 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: block cipher, Even-Mansour ciphers, meet-in-the-middle attack, key recovery, partial invariable pair, matching with the input-restricted public permutation,
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Security of Related-Key Differential Attacks on TWINE, Revisited Kosei SAKAMOTO Kazuhiko MINEMATSU Nao SHIBATA Maki SHIGERI Hiroyasu KUBO Yuki FUNABIKI Takanori ISOBE
Publication: Publication Date: 2020/01/01 Vol. E103-A No. 1 pp. 212-214 Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security) Category: Keyword: block cipher, related-key security, active sbox, MILP,
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Security Analysis and Countermeasures of an End-to-End Encryption Scheme of LINE Takanori ISOBE Kazuhiko MINEMATSU
Publication: Publication Date: 2020/01/01 Vol. E103-A No. 1 pp. 313-324 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: E2EE, LINE, key exchange, group message, authenticated encryption,
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Improved Integral Attack on HIGHT Yuki FUNABIKI Yosuke TODO Takanori ISOBE Masakatu MORII
Publication: Publication Date: 2019/09/01 Vol. E102-A No. 9 pp. 1259-1271 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: block cipher, HIGHT, integral attack, division property, MILP,
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Meet-in-the-Middle Key Recovery Attacks on a Single-Key Two-Round Even-Mansour Cipher Takanori ISOBE Kyoji SHIBUTANI
Publication: Publication Date: 2019/01/01 Vol. E102-A No. 1 pp. 17-26 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: block cipher, Even-Mansour ciphers, meet-in-the-middle attack, key recovery, partial invariable pair, matching with the input-restricted public permutation,
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Theoretical Understanding of Some Conditional and Joint Biases in RC4 Stream Cipher Sonu JHA Subhadeep BANIK Takanori ISOBE Toshihiro OHIGASHI Santanu SARKAR
Publication: Publication Date: 2018/11/01 Vol. E101-A No. 11 pp. 1869-1879 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: RC4, triple-byte biases, conditional biases, distinguishing attacks, 3-predictive-3-states,
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Cryptanalysis of Reduced Kreyvium Yuhei WATANABE Takanori ISOBE Masakatu MORII
Publication: Publication Date: 2018/09/01 Vol. E101-A No. 9 pp. 1548-1556 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: differential cryptanalysis, conditional differential, higher-order differential, distinguisher, key recovery attack, Kreyvium,
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On Design of Robust Lightweight Stream Cipher with Short Internal State Subhadeep BANIK Takanori ISOBE Masakatu MORII
Publication: Publication Date: 2018/01/01 Vol. E101-A No. 1 pp. 99-109 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: even-mansour, lightweight, stream cipher, short internal state, TMD tradeoff,
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Analysis and Improvements of the Full Spritz Stream Cipher Subhadeep BANIK Takanori ISOBE Masakatu MORII
Publication: Publication Date: 2017/06/01 Vol. E100-A No. 6 pp. 1296-1305 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: RC4, Spritz, stream cipher, short-term bias, long-term bias, distinguishing attack, plaintext recovery attack, state recovery attack,
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How to Efficiently Exploit Different Types of Biases for Plaintext Recovery of RC4 Yuhei WATANABE Takanori ISOBE Toshihiro OHIGASHI Masakatu MORII
Publication: Publication Date: 2017/03/01 Vol. E100-A No. 3 pp. 803-810 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: RC4, SSL/TLS, plaintext recovery attack, keystream biases,
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Full Plaintext Recovery Attacks on RC4 Using Multiple Biases Toshihiro OHIGASHI Takanori ISOBE Yuhei WATANABE Masakatu MORII
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2015/01/01 Vol. E98-A No. 1 pp. 81-91 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Symmetric Key Based Cryptography Keyword: RC4, stream cipher, keystream biases, plaintext recovery attack, guess-and-determine attack, broadcast setting,
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Comprehensive Analysis of Initial Keystream Biases of RC4 Takanori ISOBE Toshihiro OHIGASHI Yuhei WATANABE Masakatu MORII
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2014/01/01 Vol. E97-A No. 1 pp. 139-151 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Symmetric Key Based Cryptography Keyword: RC4, stream cipher, keystream biases, plaintext recovery attack, multiple key distinguisher, key recovery attack, broadcast setting,
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A Chosen-IV Key Recovery Attack on Py and Pypy Takanori ISOBE Toshihiro OHIGASHI Hidenori KUWAKADO Masakatu MORII
Publication: IEICE TRANSACTIONS on Information and Systems Publication Date: 2009/01/01 Vol. E92-D No. 1 pp. 32-40 Type of Manuscript: PAPER Category: Application Information Security Keyword: cryptanalysis, stream cipher, Py, Pypy, eSTREAM, key recovery attack,
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