PROTECTING WHITE-BOX FEISTEL NETWORK IMPLEMENTATION AGAINST FAULT ATTACK

A method of implementing a method of mapping an input message to an output message by a keyed cryptographic operation, wherein the keyed cryptographic operation includes a plurality of rounds using a Feistel network, including: receiving an input having a first half and a second half; performing, by...

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Bibliographic Details
Main Author MICHIELS, WILHELMUS PETRUS ADRIANUS JOHANNUS
Format Patent
LanguageEnglish
Published 13.09.2018
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A method of implementing a method of mapping an input message to an output message by a keyed cryptographic operation, wherein the keyed cryptographic operation includes a plurality of rounds using a Feistel network, including: receiving an input having a first half and a second half; performing, by a basic block, a portion of a round function on the second half to produce a portion of an encoded output, and wherein the basic block provides a portion of the second half as a portion of an encoded first input to a next round; and XORing the portion of the encoded output and a portion the first half to produce a portion of an encoded second input to the next round.
Bibliography:Application Number: US201815975119