Breaking a Fifth-Order Masked Implementation of CRYSTALS-Kyber by Copy-Paste

ePrint Report: Breaking a Fifth-Order Masked Implementation of CRYSTALS-Kyber by Copy-Paste

Elena Dubrova, Kalle Ngo, Joel Gärtner

CRYSTALS-Kyber has been selected by the NIST as a public-key encryption and key encapsulation mechanism to be standardized. It is also included in the NSA's suite of cryptographic algorithms recommended for national security systems. This makes it important to evaluate the resistance of CRYSTALS-Kyber's implementations to side-channel attacks. The unprotected and first-order masked software implementations have been already analysed. In this paper, we …

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