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access icon openaccess Probing attack of share-serial threshold implementation of advanced encryption standard

The authors present the first security evaluation of the side-channel attack countermeasure called the share-serial threshold implementation proposed by Wegener and Moradi. In the share-serial threshold implementation, all the component functions are processed using a unified circuit thereby reducing total circuit area. They show that the share-serial threshold implementation is vulnerable to probing attack using a single probe. In the proposed attack, an attacker places a single probe on a wire in the unified circuit and read the target wire over multiple cycles. The attacker can recover unshared 1-bit intermediate value by combining the measured data. The attack highlights an interesting difference between side-channel analysis and probing attack. The authors also evaluate the number of cipher calls to attack the block cipher advanced encryption standard (AES).

http://iet.metastore.ingenta.com/content/journals/10.1049/el.2018.7518
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content/journals/10.1049/el.2018.7518
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