Block Ciphering System, Using Permutations to Hide the Core Ciphering Function of Each Encryption Round

Block Ciphering System, Using Permutations to Hide the Core Ciphering Function of Each Encryption Round

In a system ( 600 ), a server ( 610 ) provides a digital signal processing function f to an executing device ( 620 ) in an obfuscated form. The function f includes a function cascade of signal processing functions f1, 1

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Hauptverfasser: TREFFERS MENNO ANNE, STARING ANTONIUS ADRIAAN MARIA, GORISSEN PAULUS MATHIAS HUBERTUS MECHTILDUS ANTONIUS, MALLON WILLEM CHARLES, TRESCHER JOACHIM ARTUR
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator TREFFERS MENNO ANNE
STARING ANTONIUS ADRIAAN MARIA
GORISSEN PAULUS MATHIAS HUBERTUS MECHTILDUS ANTONIUS
MALLON WILLEM CHARLES
TRESCHER JOACHIM ARTUR
description In a system ( 600 ), a server ( 610 ) provides a digital signal processing function f to an executing device ( 620 ) in an obfuscated form. The function f includes a function cascade of signal processing functions f1, 1
format Patent
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The function f includes a function cascade of signal processing functions f1, 1<=i<=N to formula (I). The server includes a processor ( 612 ) for selecting a set of 2N invertible permutations pi, 1<=i<=2N; calculating a set of N functions g, where g, is functionally equivalent to formula (II) for 1<=i<=; and calculating a set of N-1 functions h, where h, is functionally equivalent to formula (III) for 2<=i<=N. The server includes means ( 614 ) for equipping the executing device with an execution device function cascade that includes formula (IV), where y1, . . . , yN are function parameters to formula (V), and means ( 616 ) for providing the functions g1, . . . gN to the executing device. The executing device includes means ( 626 ) for obtaining the functions g1, . . . , gN and a processor ( 622 ) for loading the execution device function cascade and applying the loaded execution device function cascade to the functions g1, . . . , gN(e.g., ED,(g1, . . . , gN)).]]></description><language>eng</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20081120&amp;DB=EPODOC&amp;CC=US&amp;NR=2008285744A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20081120&amp;DB=EPODOC&amp;CC=US&amp;NR=2008285744A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TREFFERS MENNO ANNE</creatorcontrib><creatorcontrib>STARING ANTONIUS ADRIAAN MARIA</creatorcontrib><creatorcontrib>GORISSEN PAULUS MATHIAS HUBERTUS MECHTILDUS ANTONIUS</creatorcontrib><creatorcontrib>MALLON WILLEM CHARLES</creatorcontrib><creatorcontrib>TRESCHER JOACHIM ARTUR</creatorcontrib><title>Block Ciphering System, Using Permutations to Hide the Core Ciphering Function of Each Encryption Round</title><description><![CDATA[In a system ( 600 ), a server ( 610 ) provides a digital signal processing function f to an executing device ( 620 ) in an obfuscated form. 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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Block Ciphering System, Using Permutations to Hide the Core Ciphering Function of Each Encryption Round
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