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<title><string language="fre"><![CDATA[2.9. Implementation]]></string></title>
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<string language="fre"><![CDATA[This is the last
session of the second week. The cryptography community
has different options for using public key cryptosystems,
among others, they have RSA or DSA. But … McEliece has the same level
of performance of the current protocol? eBATS is a competition to
identify the most efficient public key cryptosystem.
They mesure among other criteria: the key size, the
time of the key generation algorithm, the encryption
algorithm, and the decryption algorithm. The eBATS benchmarking includes
seven public key encryption schemes. A McEliece
implementation, from Biswas and Sendrier, using binary Goppa codes
with length of 2048, and the number of errors that it
can correct is 32. The security level of this scheme
is around 80 bits of security. An NTRU implementation
with 256-bits of security and five sizes of RSA. eBATS times each
system on a wide range of computer. None of this
implementation have a layer of semantic security. The results seem to
confirm that the McEliece cryptosystem is an interesting
candidate for public key schemes. The fastest encryption in
the eBATS benchmarking is RSA, with 80 bits of
security, followed by the McEliece implementation, while
the fastest decryption is for NTRU, followed by the
McEliece implementation. Recall that the McEliece
cryptosystem is well known to provide extremely fast encryption
and reasonnably fast decryption. however, the main drawback
of code-based cryptography are the large key sizes. As
we have seen, quasi cyclic MDPC codes allow a very
compact key representation. They claim that a public key
of only 4800 bits can provide a
level of 80 bits security. Neither an attack nor an
implementation of cryptography using quasi cyclic MDPC
code have been published. We present here recent
results which provide better decryption
performances for the Mc Eliece. We denote by m the field extension. t, the number of
errors that we can correct.]]></string></description>
<keyword><string language="fre"><![CDATA[algèbre linéaire]]></string></keyword><keyword><string language="fre"><![CDATA[chiffrement à clé publique]]></string></keyword><keyword><string language="fre"><![CDATA[cryptage des données]]></string></keyword><keyword><string language="fre"><![CDATA[cryptographie]]></string></keyword><keyword><string language="fre"><![CDATA[McEliece]]></string></keyword><keyword><string language="fre"><![CDATA[LDPC]]></string></keyword><keyword><string language="fre"><![CDATA[MDPC]]></string></keyword>
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<date><dateTime>2015-05-05</dateTime></date>
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<string language="fre"><![CDATA[2: McEliece Cryptosystem]]></string>
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