专利名称：SCRAMBLED TWEAK MODE OF BLOCK
CIPHERS FOR DIFFERENTIAL POWERANALYSIS RESISTANT ENCRYPTION
发明人：HARS, Laszlo申请号：EP16192970.8申请日：20161009公开号：EP3154217A1公开日：20170412
专利附图：
摘要：A system and method for providing a scrambled tweak mode of block cipherencryption for a device that mitigates the effect of side channel attacks based on
differential power analysis (DPA). The scrambled tweak mode encryption engine createsnoise at the start of the encryption process by obfuscating the counter value with the useof the very fast mixing function, such as a mixing function based on a XOR tree,
substitution-permutation networks, or double-mix Feistel networks. The mixing functionuses some secret key material, which diversifies its behavior between differentinstantiations. Because the counter values are scrambled and the mixing functions
operate very fast in parallel hardware, the input of the block cipher is pseudorandom andgroups of blocks can't be correlated.
申请人：The Boeing Company
地址：100 North Riverside Plaza Chicago, IL 60606-2016 US
国籍：US
代理机构：Bartelds, Erik
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