Filters








79 Hits in 1.3 sec

Cryptanalysis of Anshel-Anshel-Goldfeld-Lemieux key agreement protocol [article]

Alex D. Myasnikov, Alexander Ushakov
2008 arXiv   pre-print
The Anshel-Anshel-Goldfeld-Lemieux (abbreviated AAGL) key agreement protocol is proposed to be used on low-cost platforms which constraint the use of computational resources. The core of the protocol is the concept of an Algebraic Eraser (abbreviated AE) which is claimed to be a suitable primitive for use within lightweight cryptography. The AE primitive is based on a new and ingenious idea of using an action of a semidirect product on a (semi)group to obscure involved algebraic structures. The
more » ... underlying motivation for AAGL protocol is the need to secure networks which deploy Radio Frequency Identification (RFID) tags used for identification, authentication, tracing and point-of-sale applications. In this paper we revisit the computational problem on which AE relies and heuristically analyze its hardness. We show that for proposed parameter values it is impossible to instantiate the secure protocol. To be more precise, in 100% of randomly generated instances of the protocol we were able to find a secret conjugator z generated by TTP algorithm (part of AAGL protocol).
arXiv:0801.4786v1 fatcat:fmwkhha7vra7jb5xxnep37fv6y

Cryptanalysis of matrix conjugation schemes

Alex D. Myasnikov, Alexander Ushakov
2014 Journal of Mathematical Cryptology  
Abstract.In this paper we cryptanalyze two protocols: the Grigoriev–Shpilrain authentication protocol and a public key cryptosystem due to Wang, Wang, Cao, Okamoto and Shao. Both of these protocols use the computational hardness of some variations of the conjugacy search problem in a class of noncommutative monoids. We devise a practical heuristic algorithm solving those problems. As a conclusion we claim that these protocols are insecure for the proposed parameter values.
doi:10.1515/jmc-2012-0033 fatcat:twuihiimdreoncwfocyhnke4oa

Cryptanalysis of the Anshel-Anshel-Goldfeld-Lemieux Key Agreement Protocol

Alex D. Myasnikov, Alexander Ushakov
2009 Groups - Complexity - Cryptology  
Ushakov / Cryptanalysis of the Anshel-Anshel-... complexity of step A in Algorithms 2.2 and 2.4 is O(γn(|a i | + |b i |)).  ... 
doi:10.1515/gcc.2009.63 fatcat:etatnnqzmvhxzm7wtqkwvkqk3u

Structured models of scientific concepts for organizing, accessing, and using learning materials

Terence R. Smith, Alex Ushakov, Marcia L. Zeng, Olga Agapova, Olha Buchel, Michael Freeston, Jim Frew, Linda Hill, Laura Smart, Tim Tierney
2002 Proceedings of the second ACM/IEEE-CS joint conference on Digital libraries - JCDL '02  
doi:10.1145/544220.544355 dblp:conf/jcdl/SmithZABFFHSTU02 fatcat:pwsq7rhcdza25phpp73rqj74ka

Vive la radiorésistance!: converging research in radiobiology and biogerontology to enhance human radioresistance for deep space exploration and colonization

Franco Cortese, Dmitry Klokov, Andreyan Osipov, Jakub Stefaniak, Alexey Moskalev, Jane Schastnaya, Charles Cantor, Alexander Aliper, Polina Mamoshina, Igor Ushakov, Alex Sapetsky, Quentin Vanhaelen (+18 others)
2018 OncoTarget  
Artemov, Alex Zhavoronkov, Alexey Moskalev, Evgeny Izumchenko, Dmitry Kaminskiy, Charles Cantor are associated with Insilico Medicine, Inc, an artificial intelligence company focused on drug discovery  ... 
doi:10.18632/oncotarget.24461 pmid:29581875 pmcid:PMC5865701 fatcat:ms66iixpvjazfiwz6kqubwbevq

Page 250 of Foreign Quarterly and Westminster Review Vol. 30, Issue 59 [page]

1842 Foreign Quarterly and Westminster Review  
Thon, Constantine An- dreevitch 4 Tolstoi, Count Ushakov, Vassili Ustrialov, Nikolai Gera- simov itch Veltman, Alexander . Moscow, 1792, July 12 1781 Viazemsky, Prince Petr.  ...  Shakovsky, Prince Alex.|1777, April 24 Snegirev, Ivan Sushkov, Dimitrii . Tchernigov, the brothers.  ... 

Length Based Attack and Braid Groups: Cryptanalysis of Anshel-Anshel-Goldfeld Key Exchange Protocol [chapter]

Alex D. Myasnikov, Alexander Ushakov
Public Key Cryptography – PKC 2007  
The length based attack on Anshel-Anshel-Goldfeld commutator key-exchange protocol [1] was initially proposed by Hughes and Tannenbaum in [9] . Several attempts have been made to implement the attack [6], but none of them had produced results convincing enough to believe that attack works. In this paper we show that accurately designed length based attack can successfully break a random instance of the simultaneous conjugacy search problem for certain parameter values and argue that the
more » ... rivate information chosen uniformly random leads to weak keys.
doi:10.1007/978-3-540-71677-8_6 dblp:conf/pkc/MyasnikovU07 fatcat:uo6z55bxgfh27lnp5j7pjulnle

Page 105 of None Vol. 34, Issue 1 [page]

1917 None  
By Prince Alex. Koudashev.— Seven are recognized, of which A. ¢. taurica (p. 178) from Krym and A. c. persica (p. 179) from Northern Persia are new. Turtur ferrago silvarum subsp. nova. (p. 181.)  ...  Ushakov. Ornithological Articles in Other Journals.' Pearson, IT. G. Uncle Sam’s Birds. (Amer. Mus. Journ., XVI, No. 6, October, 1916). Despott, G. Ornithological Report for the Maltese Islands.  ... 

Critical Letters to the Editors of the Soviet Press: Areas and Modes of Complaint

Alex Inkeles, Kent Geiger
1952 American Sociological Review  
Ushakov, Tolkovy Slovar Russkoge Yazyka, Moscow, 1940, IV, p. 37.  ...  the items analyzed underscores the need for continuing inquiry and for the development of more precise instruments, CRITICAL LETTERS TO THE EDITORS OF THE SOVIET PRESS: AREAS AND MODES OF COMPLAINT 7 ALEX  ... 
doi:10.2307/2088047 fatcat:tyh6d2qq3bae7mb6pyfaghj6ka

Page 694 of American Sociological Review Vol. 17, Issue 6 [page]

1952 American Sociological Review  
Ushakov, Tolkovy Slovar Russkoge Yazyka, Moscow, 1940, IV, p. 37.  ...  the items analyzed underscores the need for continuing inquiry and for the development of more precise instruments, CRITICAL LETTERS TO THE EDITORS OF THE SOVIET PRESS: AREAS AND MODES OF COMPLAINT 7 ALEX  ... 

Preface

2020 Procedia Computer Science  
Anastasia Romanova, Denis Vaganov, Marat Valitov and Sergey Vasiliev Dopamine and hippocampal synaptic plasticity . . . . . . . . . . . . . . . . . . . . . . . 650 Anna Proskura, Svetlana Vechkapova and Alex  ...  Zaeva vi Activity of mirror neurons in man in the observation, pronunciation and mental pronunciation of words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Yury Bushov, Vadim Ushakov  ... 
doi:10.1016/j.procs.2020.02.241 fatcat:3xwcrqc22jbplitpazsdvmarbm

Page 1269 of Mathematical Reviews Vol. , Issue 84c [page]

1984 Mathematical Reviews  
Ursycsyn, Pawet Ushakov, A. I. See Ushakov, I. A ...- 90052 . 65028 Ushakov, I. A. Usmani, R. A. Utegenov, K. 76070 Utkin, V.  ...  Wainger, Stephen Waintal, Alex Walden, Rainer ... Waldinger, Richard Walker, Michael Wallner, R.P. ... Walters, R. F.C.  ... 

Page 4401 of Mathematical Reviews Vol. , Issue 86i [page]

1986 Mathematical Reviews  
Weiss, Alex Weiss, Asia Ivié Weiss, John Wells, R. O., Jr. Wen, Guo Chun Wenocur, Michael L. .  ...  See «81137 USan, Janez 06009 Ushakov, I. A. Uspenskil, S. V. Ustinov, N. A. Utev, S. A. Uusipaikka, Esa Vainio, Reino Vainshtein, A. D. Vaisala, J. VajterSic, Marian Valabrega, Paolo Valeev, V. G.  ... 

Page 4568 of Mathematical Reviews Vol. , Issue 2000f [page]

2000 Mathematical Reviews  
CMERE, BO 6 occinn sens 93019 Usha Devi, N. .... 05079 Ushakov, V. N . 60023 Ushakova, A.  ...  Tretyakov, Alex Yu. Treur, Jan Tricot, Claude Triebel, Hans ee MII. oicccvcovstsoss Triggiani, Roberto ............ Trigub, M. V. ...... Triméche, K.  ... 

Page 2543 of Mathematical Reviews Vol. , Issue 98D [page]

1998 Mathematical Reviews  
Ekkart Kindler and Rolf Walter, Arc-typed Petri nets (289-306); Werner Knaup, A new it- erative numerical solution algorithm for a class of stochastic Petri 68 COMPUTER SCIENCE 984:68010 nets (327-345); Alex  ...  modelling the topology of homogeneous manifolds by means of symbolic computation (258- 273); Viorica Sofronie, Towards a sheaf semantics for cooperating agents scenarios (289-304); Vitaly Telerman and Dmitry Ushakov  ... 
« Previous Showing results 1 — 15 out of 79 results