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<h3><img
src="cid:part1.03000808.09050108@ruhr-uni-bochum.de"
alt="HGI" height="106" align="right" width="116"><br>
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<big><big><big><small>Sehr geehrte Damen und Herren, <br>
<br>
<br>
im Rahmen des HGI-Kolloquiums, organisiert vom
Lehrstuhl Kryptologie und IT-Sicherheit
(CITS), werden<br>
<br>
<big><u>Yuto Nakano</u></big></small></big></big></big><br>
<big><big><big><u> <br>
</u><small>von der <br>
<br>
KDDI Labs, Japan</small></big></big></big><br>
<big><big><big><small> <br>
am <br>
<br>
nächsten <u>Donnerstag, den 31. Mai
2012 um 11.00 Uhr s.t. in Raum ID 04/653<br>
<br>
</u>über folgendes Thema referieren:</small><br>
</big></big></big> <br>
<br>
<hr size="2" width="100%">
<h1><small>Analysis of Message Injection in Stream
Cipher-Based Hash Functions</small></h1>
<big>A common approach for the construction of
cryptographic hash functions is to design the
algorithm based on an existing symmetric encryption
primitive. While there has been extensive research
on the design of block cipher-based hash functions,
little has been done on the study of design and
security of stream cipher-based hash functions(SCH).
In this paper we discuss the general construction of
stream cipher-based hash functions, devoting special
attention to one of the function’s crucial
components: the message injection function. We
define two types of message injection functions,
which may be appended to the keystream generator
(e.g. a stream cipher) to build an SCH. Based on
these constructions, we evaluate the security of
simple SCHs whose stream cipher function consists of
a LFSR-based filter generator. We see this as an
initial step in the more formal study of the
security of hash function constructions based on
stream ciphers.</big><br>
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class="Apple-style-span" style="color: rgb(0, 53,
96);"><big>Der Vortrag beginnt am Donnerstag um
11.00 Uhr s.t. im ID 04/653.<br>
</big></span></span><br>
<span class="Apple-style-span" style="border-collapse:
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class="Apple-style-span" style="color: rgb(0, 53,
96);"><big>Zu diesem und sämtlichen weiteren
Vorträgen im Rahmen des HGI-Kolloquiums sind
alle Studierenden und Interessierten herzlich
eingeladen! Eine Voranmeldung ist nicht
erforderlich!</big></span></span>
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class="Apple-style-span" style="color: rgb(0, 53,
96);"><big>Weitere Informationen gibt es auf
folgender Webseite:<br>
<br>
<a moz-do-not-send="true"
href="http://hgi.rub.de/hgi/hgi-seminar/aktuelles/">http://hgi.rub.de/hgi/hgi-seminar/aktuelles/</a></big><br>
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<big><big>Beste Grüße, <br>
Saqib A. Kakvi</big></big><br>
<br>
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