2,128 research outputs found

    Marc Nattier und Marie Courtois

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    Marc Nattier (um 1642-1705) und Marie Courtois (um 1655-1703), Pastell auf Papier, vor 1704, 81,0 x 65,5 cm und 80,9 x 64,5 cm, Lyon, musée des Beaux-Arts, cabinet des Arts Graphiques, Inv.Nr. 1963-15 und 1963-16 Bei den zwei als unbekannt geführten Pastellbildnissen von Vivien im Lyoner Musée des Beaux-Arts handelt es sich aller Wahrscheinlichkeit nach um die bislang als verschollen geltenden Portraits von Marc Nattier und seiner Gattin, Marie Courtois, die 1704 im Salon ausgestellt waren. D..

    Random Permutation Statistics and An Improved Slide-Determine Attack on KeeLoq

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    KeeLoq is a lightweight block cipher which is extensively used in the automotive industry. Its periodic structure, and overall simplicity makes it vulnerable to many different attacks. Only certain attacks are considered as really "practical" attacks on KeeLoq: the brute force, and several other attacks which require up to 2p16 known plaintexts and are then much faster than brute force, developed by Courtois et al., and (faster attack) by Dunkelman et al. On the other hand, due to the unusually small block size, there are yet many other attacks on KeeLoq, which require the knowledge of as much as about 2p32 known plaintexts but are much faster still. There are many scenarios in which such attacks are of practical interest, for example if a master key can be recovered, see Section 2 in [11] for a detailed discussion. The fastest of these attacks is an attack by Courtois, Bard and Wagner from that has a very low complexity of about 2p28 KeeLoq encryptions on average. In this paper we will propose an improved and refined attack which is faster both on average and in the best case. We also present an exact mathematical analysis of probabilities that arise in these attacks using the methods of modern analytic combinatorics

    Images d’un témoin disparu. Le manuscrit Rothschild (X) du Guiron le Courtois

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    Leonardi Lino, Morato Nicolas, Molteni Ilaria. Images d’un témoin disparu. Le manuscrit Rothschild (X) du Guiron le Courtois. In: Romania, tome 132 n°527-528, 2014. pp. 283-352

    Images d'un témoin disparu. Le manuscrit Rotschild (X) du ‘Guiron le Courtois’

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    Riscoperta di alcune immagini microfilmate del codice X del ciclo di Guiron le Courtois. Viene ripercorsa la storia del codice, se ne dà una descrizione con ricostruzione della fascicolazione, seguita dall’analisi dei testi e della lingua, con l’edizione della conclusione ad attestazione unica, e studio del corredo decorativo e illustrativo

    Using faculty focus groups to launch a scholarly communication program

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    This paper explores the benefits of using faculty focus groups as an early component of a scholarly communications program with suggestions for planning and conducting sessions, recruiting participants and analyzing outcomes

    On the Goubin-Courtois Attack on TTM

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    In the paper [1] L. Goubin and N.T. Courtois propose an attack on TTM cryptosys-tem through a misidentication of TTM as a special case of TPM (for denition, the reader is referred to x 1). By attacking the TPM system, they produce an interesting formula of complexities,

    Catalogue des armes et livres composant la collection de M. X... dont la vente après décès aura lieu... les 28 et 29 février 1908... / [expert] G. Courtois

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    [Vente. Art. 1908-02-28 - 1908-02-29. Paris][Collection. Art. X***. 1908][Collection. Armes. X***. 1908][Vente. Armes. 1908-02-28 - 1908-02-29. Paris]Référence bibliographique : Lugt, 66209Appartient à l’ensemble documentaire : VenteEST2Avec mode text

    On multiple symmetric fixed points in GOST

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    In this article the author revisits the oldest attack on GOST known, the Kara Reflection attack, and another totally unrelated truncated differential attack by Courtois and Misztal. It is hard to imagine that there could be any relationship between two so remote attacks which have nothing in common. However, there is one: Very surprisingly, both properties can be combined and lead the fastest attack on GOST ever found, which is nearly feasible to execute in practice

    Vente aux enchères publiques après le décès de Mme X***... beaux bijoux... objets d'art et de vitrine... argenterie... importante suite de tableaux... belle collection d'armes détaillée au présent catalogue... 13-16 juin 1906 / [expert] Gaston Courtois

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    [Vente. Armes. 1906-06-13 - 1906-06-16. Paris][Collection. Armes. X***, Madame. 1906]Référence bibliographique : Lugt, 64545Appartient à l’ensemble documentaire : VenteEST2Avec mode text
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