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As the first official published commercial block cipher standard of China, SMS4 has been widely used in local area wireless product. Although the algorithm is proved to be secure enough mathematically, when implemented in hardware, it is vulnerable to differential power analysis (DPA), especially using chosen plaintext method. In order to discuss countermeasures against DPA, we present a secure circuit...
Side-channel attacks on block ciphers and public key algorithms have been discussed extensively, but only a few systematic studies on the applicability of side-channel attacks to stream ciphers could be found. The objective of the present study is to develop general differential power analysis techniques which can be employed to attack the stream ciphers with linear feedback shift registers. To illustrate...
PRINT cipher is a lightweight block ciphers dedicated to integrated circuit (IC) printing, proposed by Lars Knudsen et al. at CHES 2010. Interestingly, PRINT cipher discards the key schedule part and keeps all its round keys identical. This unconventional design guarantees its modest space requirement. In this paper, however, we will show how to make use of its identical round key to mount a terrifically...
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