groups complexity cryptology

GROUPS
COMPLEXITY
CRYPTOLOGY
MANAGING EDITORS
Vladimir Shpilrain, New York
Pascal Weil, Bordeaux
EDITORIAL BOARD
Simon R. Blackburn, London
Marston Conder, Auckland
Patrick Dehornoy, Caen
Bettina Eick, Braunschweig
Ben Fine, Fairfield
Robert Gilman, Hoboken
Dima Grigoriev, Lille
Ki Hyoung Ko, Daejeon
Martin Kreuzer, Passau
Alexander V. Mikhalev, Moscow
Alexei Myasnikov, Hoboken
Vitalii Romankov, Omsk
Gerhard Rosenberger, Hamburg
Mark Sapir, Nashville
Sven Schäge, Bochum
Rick Thomas, Leicester
Boaz Tsaban, Ramat Gan
Enric Ventura Capell, Barcelona
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GROUPS – COMPLEXITY – CRYPTOLOGY is a journal for speedy publication of articles in the areas of combinatorial and computational group
theory, complexity theory, and cryptology. Preference is given to papers that touch upon at least two of these areas, but strong papers representing just
one of the areas are considered, too. The journal primarily publishes research papers, but comprehensive and timely survey articles on a topic inside
the scope of the journal are also welcome. All submitted papers are peerreviewed before publication.
All information regarding notes for contributors, subscriptions, Open access and orders is available online at www.degruyter.com/gcc.
ABSTRACTED/INDEXED IN Celdes • CNKI Scholar (China National Knowledge Infrastructure) • CNPIEC • DBLP Computer Science Bibliography
• EBSCO - TOC Premier • EBSCO Discovery Service • Elsevier - SCOPUS • Google Scholar • J-Gate • Mathematical Reviews (MathSciNet) •
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Directory/ulrichsweb • WorldCat (OCLC) • Zentralblatt Math
ISSN 1867-1144 · e-ISSN 1869-6104 · CODEN GCCRC9
RESPONSIBLE EDITORS Vladimir Shpilrain, Department of Mathematics, The City College of New York, New York, NY 10031, USA.
Email: [email protected]
Pascal Weil, Laboratoire Bordelais de Recherche en Informatique, Université Bordeaux I, 33405 Talence-Bordeaux, France.
Email: [email protected]
JOURNAL MANAGER Theresa Haney, De Gruyter, Genthiner Straße 13, 10785 Berlin, Germany.
Tel.: +49 (0)30 260 05-375, Fax: +49 (0)30 260 05-250
Email: [email protected]
RESPONSIBLE FOR ADVERTISEMENTS Claudia Neumann, De Gruyter, Genthiner Straße 13, 10785 Berlin, Germany.
Tel.: +49 (0)30 260 05-226, Fax: +49 (0)30 260 05-264
Email: [email protected]
© 2016 Walter de Gruyter GmbH, Berlin/Boston
TYPESETTING Dimler & Albroscheit, Müncheberg
PRINTING Franz X. Stückle Druck und Verlag e.K., Ettenheim
Printed in Germany
Offenlegung der Inhaber und Beteiligungsverhältnisse gem. § 7a Abs. 1 Ziff. 1, Abs. 2 Ziff. 3 des Berliner Pressegesetzes: Die Gesellschafter der
Walter de Gruyter GmbH sind: Clara Cram Stiftung, Berlin; Cram, Gisela, Rentnerin, Berlin; Cram, Dr. Georg-Martin, Unternehmens-Systemberater,
Stadtbergen; Cram, Maike, Berlin; Cram, Jens, Mannheim; Cram-Heydrich, Ingrid, Betriebsleiterin, Tuxpan / Michoacan (Mexiko); Cram-Heydrich,
Sabina, Mexico DF (Mexiko); Cram, Silke, Wissenschaftlerin, Mexico DF (Mexiko); Cram, Björn, Aachen; Cram, Ella Anita, Rentnerin, Berlin;
Cram, Berit, Greifswald; Cram-Gomez, Susanne, Mexico DF (Mexiko); Cram-Heydrich, Walter, Mexico DF (Mexico); Cram-Heydrich, Kurt,
Angestellter, Mexico DF (Mexico); Duvenbeck, Brigitta, Oberstudienrätin i.R., Bad Homburg; Gädeke, Gudula, M.A., Atemtherapeutin/Lehrerin,
Tübingen; Gädeke, Martin, Einzelunternehmer, Würzburg; Lubasch, Dr. Annette, Ärztin, Berlin; Schütz, Dr. Christa, Ärztin, Mannheim; Schütz,
Sonja, Berlin; Schütz, Juliane, Berlin; Schütz, Antje, Berlin; Schütz, Valentin, Berlin; Seils, Dorothee, Apothekerin, Stuttgart; Seils, Gabriele,
Journalistin, Berlin; Seils, Dr. Clara-Eugenie, Oberstudienrätin i.R., Reppenstedt; Seils, Christoph, Journalist, Berlin; Siebert, John-Walter, Pfarrer,
Oberstenfeld; Walter de Gruyter Stiftung, Berlin.
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Groups Complexity Cryptology
| 2016 | Volume 8 | Issue 1
Contents
Iris Anshel, Derek Atkins, Dorian Goldfeld,
Paul E. Gunnells
A class of hash functions based on the algebraic
1
eraser™
Omar Akchiche, Omar Khadir
Factoring multi-power RSA moduli with primes sharing
47
least or most significant bits
Emmanuel Fouotsa, Abdoul Aziz Ciss
Faster Ate pairing computation on Selmer’s model of
elliptic curves
55
Gennady A. Noskov, Alexander N. Rybalov
Generic case complexity of the Graph Isomorphism
Problem
9
Murray Elder, Jennifer Taback
Thompson’s group F is 1-counter graph automatic
21
Bettina Eick
The automorphism group of a finitely generated virtually
abelian group
35
Kenneth R. Blaney, Andrey Nikolaev
A PTIME solution to the restricted conjugacy problem in
generalized Heisenberg groups
69
Sylvain Duquesne, Loubna Ghammam
Memory-saving computation of the pairing final
exponentiation on BN curves
75
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Unauthenticated
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